Towards Sustainable Hydrogen Peroxide Electroproduction: Activated Carbon from Sewage Sludge As an Eco-Friendly Electrode Material
Hydrogen peroxide (H 2 O 2 ) has emerged as a chemical of paramount importance, finding diverse applications as a bleaching agent, medical disinfectant, and environmentally benign oxidant [1]. The industrial production of H 2 O 2 currently relies on the anthraquinone oxidation process, primarily exe...
Gespeichert in:
Veröffentlicht in: | Meeting abstracts (Electrochemical Society) 2023-12, Vol.MA2023-02 (61), p.3315-3315 |
---|---|
Hauptverfasser: | , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
container_end_page | 3315 |
---|---|
container_issue | 61 |
container_start_page | 3315 |
container_title | Meeting abstracts (Electrochemical Society) |
container_volume | MA2023-02 |
creator | Lourenço, Julio Cesar Porto, Tulio P. Cruz, Igor P.C. Nogueira, Beatriz de Moraes, Nicolas Perciani Fortunato, Guilherme Vilalba Rodrigues, Liana Alvares Rocha, Robson Silva Ledendecker, Marc Lanza, Marcos R.V. |
description | Hydrogen peroxide (H
2
O
2
) has emerged as a chemical of paramount importance, finding diverse applications as a bleaching agent, medical disinfectant, and environmentally benign oxidant [1]. The industrial production of H
2
O
2
currently relies on the anthraquinone oxidation process, primarily executed within large-scale industrial plants [1]. Herein lies a challenge— H
2
O
2
, typically concentrated to an 80% level, introduces inherent hazards concerning storage and transportation, prompting a quest for a safer alternative. One way to overcome such problems is by the in-situ electrogeneration of H
2
O
2
, which would allow an adjustable production of the chemical on demand directly for its application, avoiding storing costs and safety issues. The in-situ electrogeneration can be done by using a gaseous-diffusion electrode (GDE), which typically enables the application of elevated current densities or substantial overpotentials, consequently facilitating the generation of high concentrations of H
2
O
2
, since there is less limitation due to O
2
mass transport to the electrode surface [2]. Commonly, these electrodes are constructed from amorphous carbon materials, due to their highly active surface area with oxygenated functional groups, excellent conductivity, and innate selectivity for H
2
O
2
electroproduction. However, a notable challenge emerges – bare carbon's selectivity for H
2
O
2
presents its highest response at high overpotentials, entailing heightened energy consumption. The studies in this field are currently focused on using these types of carbon as support for other catalytic materials that are more active and selective towards H
2
O
2
electroproduction [3, 4]. Numerous studies in the literature have explored the use of carbon materials, with the most commonly employed carbon supports for such applications being Printex 6L (Orion) and Vulcan XC 72R (Cabot). These materials are obtained from the incomplete combustion of heavy petroleum products at high temperatures, being non-sustainable and environmentally unfriendly. A potential solution lies in the use of environmentally conscious carbon sources. While amorphous carbon can be obtained from various carbon-rich wastes through an activation process, their utility in H
2
O
2
electrogeneration remains underexplored. This study sought to obtain activated carbon from sewage sludge, focusing on its efficacy in H
2
O
2
electrogeneration. Acid (H
3
PO
4
) and alkaline (KOH/NaOH mixture) carbon ac |
doi_str_mv | 10.1149/MA2023-02613315mtgabs |
format | Article |
fullrecord | <record><control><sourceid>iop_O3W</sourceid><recordid>TN_cdi_iop_journals_10_1149_MA2023_02613315mtgabs</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>3315</sourcerecordid><originalsourceid>FETCH-LOGICAL-c88s-d55d01cc57e34b41e333c2c309cb6efd5ff29a90e67b8bb5b9423f52d583f50d3</originalsourceid><addsrcrecordid>eNqFkM1KAzEURoMoWKuPIOQFRvMzaWfcDaW1QotCux_yc1OmTJOSzFi79ckbqQquXJ27OYfLh9A9JQ-U5uXjsmKE8YywEeWcil23kSpeoAGjgmaMcHH5e-f8Gt3EuCWEFwVjA_S59gcZTMSrPnaycVK1gOdHE_wGHH6D4D8aA3jagu6C3wdvet013j3hKvFddmDwRAblHbbB7_AKDnIDeNX2JqGKWDo81T6bhQacaY8_pdRcJjk0sr1FV1a2Ee6-OUTr2XQ9mWeL1-eXSbXIdFHEzAhhCNVajIHnKqfAOddMc1JqNQJrhLWslCWB0VgVSglV5oxbwYwoEojhQyTOWR18jAFsvQ_NToZjTUn9tWN93rH-u2Py6Nlr_L7e-j649OQ_zgkz0no4</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Towards Sustainable Hydrogen Peroxide Electroproduction: Activated Carbon from Sewage Sludge As an Eco-Friendly Electrode Material</title><source>Open Access: IOP Publishing Free Content</source><creator>Lourenço, Julio Cesar ; Porto, Tulio P. ; Cruz, Igor P.C. ; Nogueira, Beatriz ; de Moraes, Nicolas Perciani ; Fortunato, Guilherme Vilalba ; Rodrigues, Liana Alvares ; Rocha, Robson Silva ; Ledendecker, Marc ; Lanza, Marcos R.V.</creator><creatorcontrib>Lourenço, Julio Cesar ; Porto, Tulio P. ; Cruz, Igor P.C. ; Nogueira, Beatriz ; de Moraes, Nicolas Perciani ; Fortunato, Guilherme Vilalba ; Rodrigues, Liana Alvares ; Rocha, Robson Silva ; Ledendecker, Marc ; Lanza, Marcos R.V.</creatorcontrib><description>Hydrogen peroxide (H
2
O
2
) has emerged as a chemical of paramount importance, finding diverse applications as a bleaching agent, medical disinfectant, and environmentally benign oxidant [1]. The industrial production of H
2
O
2
currently relies on the anthraquinone oxidation process, primarily executed within large-scale industrial plants [1]. Herein lies a challenge— H
2
O
2
, typically concentrated to an 80% level, introduces inherent hazards concerning storage and transportation, prompting a quest for a safer alternative. One way to overcome such problems is by the in-situ electrogeneration of H
2
O
2
, which would allow an adjustable production of the chemical on demand directly for its application, avoiding storing costs and safety issues. The in-situ electrogeneration can be done by using a gaseous-diffusion electrode (GDE), which typically enables the application of elevated current densities or substantial overpotentials, consequently facilitating the generation of high concentrations of H
2
O
2
, since there is less limitation due to O
2
mass transport to the electrode surface [2]. Commonly, these electrodes are constructed from amorphous carbon materials, due to their highly active surface area with oxygenated functional groups, excellent conductivity, and innate selectivity for H
2
O
2
electroproduction. However, a notable challenge emerges – bare carbon's selectivity for H
2
O
2
presents its highest response at high overpotentials, entailing heightened energy consumption. The studies in this field are currently focused on using these types of carbon as support for other catalytic materials that are more active and selective towards H
2
O
2
electroproduction [3, 4]. Numerous studies in the literature have explored the use of carbon materials, with the most commonly employed carbon supports for such applications being Printex 6L (Orion) and Vulcan XC 72R (Cabot). These materials are obtained from the incomplete combustion of heavy petroleum products at high temperatures, being non-sustainable and environmentally unfriendly. A potential solution lies in the use of environmentally conscious carbon sources. While amorphous carbon can be obtained from various carbon-rich wastes through an activation process, their utility in H
2
O
2
electrogeneration remains underexplored. This study sought to obtain activated carbon from sewage sludge, focusing on its efficacy in H
2
O
2
electrogeneration. Acid (H
3
PO
4
) and alkaline (KOH/NaOH mixture) carbon activators were analyzed in concentrations ranging from 0 – 30 %m/v, temperatures of 400 – 900 ºC, and activation time from 0 – 2 h at the selected temperature. The obtained materials were analyzed through linear sweep voltammetry using an RRDE setup in N
2
-saturated and O
2
-saturated, in a 0.05 M K
2
SO
4
(pH 3) electrolyte solution. Results have shown that the most successful materials for H
2
O
2
electrogeneration were those produced under 900 ºC for 2h impregnated with 5 % m/v H
3
PO
4
and 597 ºC, zero of plateau time impregnated with 20 % m/V mixture of KOH/NaOH in the ratio of 50.5 KOH: NaOH. These optimized materials exhibited remarkable selectivities of ≈ 90% and ≈ 81% at -0.8 V vs. Ag/AgCl, respectively. This level of electrocatalytic performance is on par with that of the commercial reference material, Printex 6L. These findings highlight the promise of our material as a viable carbon support for in-situ H
2
O
2
electrogeneration, offering a more sustainable alternative compared to commercial black carbons.
Acknowledgments
The authors are sincerely grateful to the Brazilian research funding agencies, including the Brazilian National Council for Scientific and Technological Development - CNPq (grants no. 465571/2014-0, 302874/2017-8, and 427452/2018-0), São Paulo Research Foundation (FAPESP – grants no. #2023/04230-2, #2023/07750-7, 2022/04058-2, #2021/12053-8, #2019/04421-7, #2017/10118-0, and #2013/02762-5).
References
[1] S. Li, J. Ma, F. Xu, L. Wei, D. He, Fundamental principles and environmental applications of electrochemical hydrogen peroxide production: A review, Chemical Engineering Journal, 452 (2023) 139371.
[2] A. Francisco, B. Enric, C. Pere-Llui's, Oxygen Reduction on Uncatalyzed Carbon-\ PTFE\ Gas Diffusion Cathode in Alkaline Medium, Journal of The Electrochemical Society, 149 (2002) E64 , publisher = The Electrochemical Society.
[3] G.V. Fortunato, E. Pizzutilo, A.M. Mingers, O. Kasian, S. Cherevko, E.S.F. Cardoso, K.J.J. Mayrhofer, G. Maia, M. Ledendecker, Impact of Palladium Loading and Interparticle Distance on the Selectivity for the Oxygen Reduction Reaction toward Hydrogen Peroxide, The Journal of Physical Chemistry C, 122 (2018) 15878-15885.
[4] L.C. Trevelin, R.B. Valim, J.C. Lourenço, A. De Siervo, R.S. Rocha, M.R.V. Lanza, Using ZrNb and ZrMo oxide nanoparticles as catalytic activity boosters supported on Printex L6 carbon for H
2
O
2
production, Advanced Powder Technology, 34 (2023) 104108.
Figure 1</description><identifier>ISSN: 2151-2043</identifier><identifier>EISSN: 2151-2035</identifier><identifier>DOI: 10.1149/MA2023-02613315mtgabs</identifier><language>eng</language><publisher>The Electrochemical Society, Inc</publisher><ispartof>Meeting abstracts (Electrochemical Society), 2023-12, Vol.MA2023-02 (61), p.3315-3315</ispartof><rights>2023 ECS - The Electrochemical Society</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0002-8654-3844</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1149/MA2023-02613315mtgabs/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,780,784,27924,27925,38890,53867</link.rule.ids><linktorsrc>$$Uhttps://iopscience.iop.org/article/10.1149/MA2023-02613315mtgabs$$EView_record_in_IOP_Publishing$$FView_record_in_$$GIOP_Publishing</linktorsrc></links><search><creatorcontrib>Lourenço, Julio Cesar</creatorcontrib><creatorcontrib>Porto, Tulio P.</creatorcontrib><creatorcontrib>Cruz, Igor P.C.</creatorcontrib><creatorcontrib>Nogueira, Beatriz</creatorcontrib><creatorcontrib>de Moraes, Nicolas Perciani</creatorcontrib><creatorcontrib>Fortunato, Guilherme Vilalba</creatorcontrib><creatorcontrib>Rodrigues, Liana Alvares</creatorcontrib><creatorcontrib>Rocha, Robson Silva</creatorcontrib><creatorcontrib>Ledendecker, Marc</creatorcontrib><creatorcontrib>Lanza, Marcos R.V.</creatorcontrib><title>Towards Sustainable Hydrogen Peroxide Electroproduction: Activated Carbon from Sewage Sludge As an Eco-Friendly Electrode Material</title><title>Meeting abstracts (Electrochemical Society)</title><addtitle>Meet. Abstr</addtitle><description>Hydrogen peroxide (H
2
O
2
) has emerged as a chemical of paramount importance, finding diverse applications as a bleaching agent, medical disinfectant, and environmentally benign oxidant [1]. The industrial production of H
2
O
2
currently relies on the anthraquinone oxidation process, primarily executed within large-scale industrial plants [1]. Herein lies a challenge— H
2
O
2
, typically concentrated to an 80% level, introduces inherent hazards concerning storage and transportation, prompting a quest for a safer alternative. One way to overcome such problems is by the in-situ electrogeneration of H
2
O
2
, which would allow an adjustable production of the chemical on demand directly for its application, avoiding storing costs and safety issues. The in-situ electrogeneration can be done by using a gaseous-diffusion electrode (GDE), which typically enables the application of elevated current densities or substantial overpotentials, consequently facilitating the generation of high concentrations of H
2
O
2
, since there is less limitation due to O
2
mass transport to the electrode surface [2]. Commonly, these electrodes are constructed from amorphous carbon materials, due to their highly active surface area with oxygenated functional groups, excellent conductivity, and innate selectivity for H
2
O
2
electroproduction. However, a notable challenge emerges – bare carbon's selectivity for H
2
O
2
presents its highest response at high overpotentials, entailing heightened energy consumption. The studies in this field are currently focused on using these types of carbon as support for other catalytic materials that are more active and selective towards H
2
O
2
electroproduction [3, 4]. Numerous studies in the literature have explored the use of carbon materials, with the most commonly employed carbon supports for such applications being Printex 6L (Orion) and Vulcan XC 72R (Cabot). These materials are obtained from the incomplete combustion of heavy petroleum products at high temperatures, being non-sustainable and environmentally unfriendly. A potential solution lies in the use of environmentally conscious carbon sources. While amorphous carbon can be obtained from various carbon-rich wastes through an activation process, their utility in H
2
O
2
electrogeneration remains underexplored. This study sought to obtain activated carbon from sewage sludge, focusing on its efficacy in H
2
O
2
electrogeneration. Acid (H
3
PO
4
) and alkaline (KOH/NaOH mixture) carbon activators were analyzed in concentrations ranging from 0 – 30 %m/v, temperatures of 400 – 900 ºC, and activation time from 0 – 2 h at the selected temperature. The obtained materials were analyzed through linear sweep voltammetry using an RRDE setup in N
2
-saturated and O
2
-saturated, in a 0.05 M K
2
SO
4
(pH 3) electrolyte solution. Results have shown that the most successful materials for H
2
O
2
electrogeneration were those produced under 900 ºC for 2h impregnated with 5 % m/v H
3
PO
4
and 597 ºC, zero of plateau time impregnated with 20 % m/V mixture of KOH/NaOH in the ratio of 50.5 KOH: NaOH. These optimized materials exhibited remarkable selectivities of ≈ 90% and ≈ 81% at -0.8 V vs. Ag/AgCl, respectively. This level of electrocatalytic performance is on par with that of the commercial reference material, Printex 6L. These findings highlight the promise of our material as a viable carbon support for in-situ H
2
O
2
electrogeneration, offering a more sustainable alternative compared to commercial black carbons.
Acknowledgments
The authors are sincerely grateful to the Brazilian research funding agencies, including the Brazilian National Council for Scientific and Technological Development - CNPq (grants no. 465571/2014-0, 302874/2017-8, and 427452/2018-0), São Paulo Research Foundation (FAPESP – grants no. #2023/04230-2, #2023/07750-7, 2022/04058-2, #2021/12053-8, #2019/04421-7, #2017/10118-0, and #2013/02762-5).
References
[1] S. Li, J. Ma, F. Xu, L. Wei, D. He, Fundamental principles and environmental applications of electrochemical hydrogen peroxide production: A review, Chemical Engineering Journal, 452 (2023) 139371.
[2] A. Francisco, B. Enric, C. Pere-Llui's, Oxygen Reduction on Uncatalyzed Carbon-\ PTFE\ Gas Diffusion Cathode in Alkaline Medium, Journal of The Electrochemical Society, 149 (2002) E64 , publisher = The Electrochemical Society.
[3] G.V. Fortunato, E. Pizzutilo, A.M. Mingers, O. Kasian, S. Cherevko, E.S.F. Cardoso, K.J.J. Mayrhofer, G. Maia, M. Ledendecker, Impact of Palladium Loading and Interparticle Distance on the Selectivity for the Oxygen Reduction Reaction toward Hydrogen Peroxide, The Journal of Physical Chemistry C, 122 (2018) 15878-15885.
[4] L.C. Trevelin, R.B. Valim, J.C. Lourenço, A. De Siervo, R.S. Rocha, M.R.V. Lanza, Using ZrNb and ZrMo oxide nanoparticles as catalytic activity boosters supported on Printex L6 carbon for H
2
O
2
production, Advanced Powder Technology, 34 (2023) 104108.
Figure 1</description><issn>2151-2043</issn><issn>2151-2035</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNqFkM1KAzEURoMoWKuPIOQFRvMzaWfcDaW1QotCux_yc1OmTJOSzFi79ckbqQquXJ27OYfLh9A9JQ-U5uXjsmKE8YywEeWcil23kSpeoAGjgmaMcHH5e-f8Gt3EuCWEFwVjA_S59gcZTMSrPnaycVK1gOdHE_wGHH6D4D8aA3jagu6C3wdvet013j3hKvFddmDwRAblHbbB7_AKDnIDeNX2JqGKWDo81T6bhQacaY8_pdRcJjk0sr1FV1a2Ee6-OUTr2XQ9mWeL1-eXSbXIdFHEzAhhCNVajIHnKqfAOddMc1JqNQJrhLWslCWB0VgVSglV5oxbwYwoEojhQyTOWR18jAFsvQ_NToZjTUn9tWN93rH-u2Py6Nlr_L7e-j649OQ_zgkz0no4</recordid><startdate>20231222</startdate><enddate>20231222</enddate><creator>Lourenço, Julio Cesar</creator><creator>Porto, Tulio P.</creator><creator>Cruz, Igor P.C.</creator><creator>Nogueira, Beatriz</creator><creator>de Moraes, Nicolas Perciani</creator><creator>Fortunato, Guilherme Vilalba</creator><creator>Rodrigues, Liana Alvares</creator><creator>Rocha, Robson Silva</creator><creator>Ledendecker, Marc</creator><creator>Lanza, Marcos R.V.</creator><general>The Electrochemical Society, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0002-8654-3844</orcidid></search><sort><creationdate>20231222</creationdate><title>Towards Sustainable Hydrogen Peroxide Electroproduction: Activated Carbon from Sewage Sludge As an Eco-Friendly Electrode Material</title><author>Lourenço, Julio Cesar ; Porto, Tulio P. ; Cruz, Igor P.C. ; Nogueira, Beatriz ; de Moraes, Nicolas Perciani ; Fortunato, Guilherme Vilalba ; Rodrigues, Liana Alvares ; Rocha, Robson Silva ; Ledendecker, Marc ; Lanza, Marcos R.V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c88s-d55d01cc57e34b41e333c2c309cb6efd5ff29a90e67b8bb5b9423f52d583f50d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><toplevel>online_resources</toplevel><creatorcontrib>Lourenço, Julio Cesar</creatorcontrib><creatorcontrib>Porto, Tulio P.</creatorcontrib><creatorcontrib>Cruz, Igor P.C.</creatorcontrib><creatorcontrib>Nogueira, Beatriz</creatorcontrib><creatorcontrib>de Moraes, Nicolas Perciani</creatorcontrib><creatorcontrib>Fortunato, Guilherme Vilalba</creatorcontrib><creatorcontrib>Rodrigues, Liana Alvares</creatorcontrib><creatorcontrib>Rocha, Robson Silva</creatorcontrib><creatorcontrib>Ledendecker, Marc</creatorcontrib><creatorcontrib>Lanza, Marcos R.V.</creatorcontrib><collection>CrossRef</collection><jtitle>Meeting abstracts (Electrochemical Society)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Lourenço, Julio Cesar</au><au>Porto, Tulio P.</au><au>Cruz, Igor P.C.</au><au>Nogueira, Beatriz</au><au>de Moraes, Nicolas Perciani</au><au>Fortunato, Guilherme Vilalba</au><au>Rodrigues, Liana Alvares</au><au>Rocha, Robson Silva</au><au>Ledendecker, Marc</au><au>Lanza, Marcos R.V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Towards Sustainable Hydrogen Peroxide Electroproduction: Activated Carbon from Sewage Sludge As an Eco-Friendly Electrode Material</atitle><jtitle>Meeting abstracts (Electrochemical Society)</jtitle><addtitle>Meet. Abstr</addtitle><date>2023-12-22</date><risdate>2023</risdate><volume>MA2023-02</volume><issue>61</issue><spage>3315</spage><epage>3315</epage><pages>3315-3315</pages><issn>2151-2043</issn><eissn>2151-2035</eissn><abstract>Hydrogen peroxide (H
2
O
2
) has emerged as a chemical of paramount importance, finding diverse applications as a bleaching agent, medical disinfectant, and environmentally benign oxidant [1]. The industrial production of H
2
O
2
currently relies on the anthraquinone oxidation process, primarily executed within large-scale industrial plants [1]. Herein lies a challenge— H
2
O
2
, typically concentrated to an 80% level, introduces inherent hazards concerning storage and transportation, prompting a quest for a safer alternative. One way to overcome such problems is by the in-situ electrogeneration of H
2
O
2
, which would allow an adjustable production of the chemical on demand directly for its application, avoiding storing costs and safety issues. The in-situ electrogeneration can be done by using a gaseous-diffusion electrode (GDE), which typically enables the application of elevated current densities or substantial overpotentials, consequently facilitating the generation of high concentrations of H
2
O
2
, since there is less limitation due to O
2
mass transport to the electrode surface [2]. Commonly, these electrodes are constructed from amorphous carbon materials, due to their highly active surface area with oxygenated functional groups, excellent conductivity, and innate selectivity for H
2
O
2
electroproduction. However, a notable challenge emerges – bare carbon's selectivity for H
2
O
2
presents its highest response at high overpotentials, entailing heightened energy consumption. The studies in this field are currently focused on using these types of carbon as support for other catalytic materials that are more active and selective towards H
2
O
2
electroproduction [3, 4]. Numerous studies in the literature have explored the use of carbon materials, with the most commonly employed carbon supports for such applications being Printex 6L (Orion) and Vulcan XC 72R (Cabot). These materials are obtained from the incomplete combustion of heavy petroleum products at high temperatures, being non-sustainable and environmentally unfriendly. A potential solution lies in the use of environmentally conscious carbon sources. While amorphous carbon can be obtained from various carbon-rich wastes through an activation process, their utility in H
2
O
2
electrogeneration remains underexplored. This study sought to obtain activated carbon from sewage sludge, focusing on its efficacy in H
2
O
2
electrogeneration. Acid (H
3
PO
4
) and alkaline (KOH/NaOH mixture) carbon activators were analyzed in concentrations ranging from 0 – 30 %m/v, temperatures of 400 – 900 ºC, and activation time from 0 – 2 h at the selected temperature. The obtained materials were analyzed through linear sweep voltammetry using an RRDE setup in N
2
-saturated and O
2
-saturated, in a 0.05 M K
2
SO
4
(pH 3) electrolyte solution. Results have shown that the most successful materials for H
2
O
2
electrogeneration were those produced under 900 ºC for 2h impregnated with 5 % m/v H
3
PO
4
and 597 ºC, zero of plateau time impregnated with 20 % m/V mixture of KOH/NaOH in the ratio of 50.5 KOH: NaOH. These optimized materials exhibited remarkable selectivities of ≈ 90% and ≈ 81% at -0.8 V vs. Ag/AgCl, respectively. This level of electrocatalytic performance is on par with that of the commercial reference material, Printex 6L. These findings highlight the promise of our material as a viable carbon support for in-situ H
2
O
2
electrogeneration, offering a more sustainable alternative compared to commercial black carbons.
Acknowledgments
The authors are sincerely grateful to the Brazilian research funding agencies, including the Brazilian National Council for Scientific and Technological Development - CNPq (grants no. 465571/2014-0, 302874/2017-8, and 427452/2018-0), São Paulo Research Foundation (FAPESP – grants no. #2023/04230-2, #2023/07750-7, 2022/04058-2, #2021/12053-8, #2019/04421-7, #2017/10118-0, and #2013/02762-5).
References
[1] S. Li, J. Ma, F. Xu, L. Wei, D. He, Fundamental principles and environmental applications of electrochemical hydrogen peroxide production: A review, Chemical Engineering Journal, 452 (2023) 139371.
[2] A. Francisco, B. Enric, C. Pere-Llui's, Oxygen Reduction on Uncatalyzed Carbon-\ PTFE\ Gas Diffusion Cathode in Alkaline Medium, Journal of The Electrochemical Society, 149 (2002) E64 , publisher = The Electrochemical Society.
[3] G.V. Fortunato, E. Pizzutilo, A.M. Mingers, O. Kasian, S. Cherevko, E.S.F. Cardoso, K.J.J. Mayrhofer, G. Maia, M. Ledendecker, Impact of Palladium Loading and Interparticle Distance on the Selectivity for the Oxygen Reduction Reaction toward Hydrogen Peroxide, The Journal of Physical Chemistry C, 122 (2018) 15878-15885.
[4] L.C. Trevelin, R.B. Valim, J.C. Lourenço, A. De Siervo, R.S. Rocha, M.R.V. Lanza, Using ZrNb and ZrMo oxide nanoparticles as catalytic activity boosters supported on Printex L6 carbon for H
2
O
2
production, Advanced Powder Technology, 34 (2023) 104108.
Figure 1</abstract><pub>The Electrochemical Society, Inc</pub><doi>10.1149/MA2023-02613315mtgabs</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0002-8654-3844</orcidid></addata></record> |
fulltext | fulltext_linktorsrc |
identifier | ISSN: 2151-2043 |
ispartof | Meeting abstracts (Electrochemical Society), 2023-12, Vol.MA2023-02 (61), p.3315-3315 |
issn | 2151-2043 2151-2035 |
language | eng |
recordid | cdi_iop_journals_10_1149_MA2023_02613315mtgabs |
source | Open Access: IOP Publishing Free Content |
title | Towards Sustainable Hydrogen Peroxide Electroproduction: Activated Carbon from Sewage Sludge As an Eco-Friendly Electrode Material |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-25T07%3A04%3A21IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-iop_O3W&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Towards%20Sustainable%20Hydrogen%20Peroxide%20Electroproduction:%20Activated%20Carbon%20from%20Sewage%20Sludge%20As%20an%20Eco-Friendly%20Electrode%20Material&rft.jtitle=Meeting%20abstracts%20(Electrochemical%20Society)&rft.au=Louren%C3%A7o,%20Julio%20Cesar&rft.date=2023-12-22&rft.volume=MA2023-02&rft.issue=61&rft.spage=3315&rft.epage=3315&rft.pages=3315-3315&rft.issn=2151-2043&rft.eissn=2151-2035&rft_id=info:doi/10.1149/MA2023-02613315mtgabs&rft_dat=%3Ciop_O3W%3E3315%3C/iop_O3W%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |