A well-designed honeycomb CoO@CdS photocatalyst derived from cobalt foam for high-efficiency visible-light H evolution
Well-designed honeycomb Co 3 O 4 @CdS (H-Co 3 O 4 @CdS) was fabricated via a one-step strategy for efficient water splitting. During the decoration of CdS, honeycomb Co 3 O 4 (H-Co 3 O 4 ) with macropores was formed simultaneously. H-Co 3 O 4 could enhance CdS visible-light absorption capacity consp...
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| Veröffentlicht in: | Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2021-05, Vol.9 (19), p.11665-11673 |
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| container_issue | 19 |
| container_start_page | 11665 |
| container_title | Journal of materials chemistry. A, Materials for energy and sustainability |
| container_volume | 9 |
| creator | Zhang, Chao Liu, Baoquan Li, Weiping Liu, Xiangxue Wang, Ke Deng, Yifeng Guo, Zhenmei Lv, Zhiguo |
| description | Well-designed honeycomb Co
3
O
4
@CdS (H-Co
3
O
4
@CdS) was fabricated
via
a one-step strategy for efficient water splitting. During the decoration of CdS, honeycomb Co
3
O
4
(H-Co
3
O
4
) with macropores was formed simultaneously. H-Co
3
O
4
could enhance CdS visible-light absorption capacity conspicuously and narrow its band gap from 2.08 to 1.03 eV. Therefore, H-Co
3
O
4
@CdS presented a remarkable H
2
production of up to
ca.
16 320 μmol g
−1
h
−1
(
λ
> 420 nm), nearly 7.3 times higher than that of pristine CdS, indicating the excellent synergistic effect between H-Co
3
O
4
and CdS. Through various photoelectricity tests (
e.g.
, PL spectra, EPR, photoelectric responsiveness and impedance), it could be found that the distinguished H
2
evolution was attributed to the improved charge carrier separation and electron generation. What's more, the enhanced H
2
production of H-Co
3
O
4
@CdS is related to the improved specific surface area (83.49 m
2
g
−1
) and pore volume (0.247 cm
3
g
−1
) as well. Density Functional Theory (DFT) calculations confirmed that CdS has the function of diverting electrons, and the orbital energy level of absorbed H
2
O molecules showed obvious migration due to the accumulation of electrons. Besides, the d-band of Co could induce more electrons to traverse the Fermi level. Subsequently, more electrons could be transferred from Co
3
O
4
to CdS and break the O-H
1
bond. Compared to the H-Co
3
O
4
@CdS system, the d-band center of the Co atoms in H-Co
3
O
4
@CdS-H
2
O shifted from −5.83 to −2.58 eV, thereby demonstrating that Co
3
O
4
served as an electron reservoir for charge redistribution in the photocatalytic water splitting process. In the end, a practicable mechanism for H-Co
3
O
4
@CdS about H
2
O dissociation and H
2
desorption was proposed.
A well-designed honeycomb Co
3
O
4
@CdS photocatalyst derived from cobalt foam was synthesized for high-efficiency visible-light H
2
evolution (
ca.
16 320 μmol h
−1
g
−1
). |
| doi_str_mv | 10.1039/d0ta11433b |
| format | Article |
| fullrecord | <record><control><sourceid>rsc</sourceid><recordid>TN_cdi_rsc_primary_d0ta11433b</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>d0ta11433b</sourcerecordid><originalsourceid>FETCH-rsc_primary_d0ta11433b3</originalsourceid><addsrcrecordid>eNqFT7FuwjAUtFArFbUs3Su9HzB1GgrJBopAbB3aHTn2M3nIyUO2SZW_bwYEY2-4O93dckK8Zmqeqbx8tyrpLFvkeT0R0w_1qeRqUS4fbr4onsQsxpMaUSi1LMup6Dfwi95Li5GOHVpouMPBcFtDxV_ryn7DueHERifth5jAYqB-3LnALRiutU_gWLcjBWjo2Eh0jgxhZwboKVLtUfoxT7AH7NlfEnH3Ih6d9hFnV30Wb7vtT7WXIZrDOVCrw3C4_8n_6_8AIClPiA</addsrcrecordid><sourcetype>Publisher</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>A well-designed honeycomb CoO@CdS photocatalyst derived from cobalt foam for high-efficiency visible-light H evolution</title><source>Royal Society Of Chemistry Journals 2008-</source><creator>Zhang, Chao ; Liu, Baoquan ; Li, Weiping ; Liu, Xiangxue ; Wang, Ke ; Deng, Yifeng ; Guo, Zhenmei ; Lv, Zhiguo</creator><creatorcontrib>Zhang, Chao ; Liu, Baoquan ; Li, Weiping ; Liu, Xiangxue ; Wang, Ke ; Deng, Yifeng ; Guo, Zhenmei ; Lv, Zhiguo</creatorcontrib><description>Well-designed honeycomb Co
3
O
4
@CdS (H-Co
3
O
4
@CdS) was fabricated
via
a one-step strategy for efficient water splitting. During the decoration of CdS, honeycomb Co
3
O
4
(H-Co
3
O
4
) with macropores was formed simultaneously. H-Co
3
O
4
could enhance CdS visible-light absorption capacity conspicuously and narrow its band gap from 2.08 to 1.03 eV. Therefore, H-Co
3
O
4
@CdS presented a remarkable H
2
production of up to
ca.
16 320 μmol g
−1
h
−1
(
λ
> 420 nm), nearly 7.3 times higher than that of pristine CdS, indicating the excellent synergistic effect between H-Co
3
O
4
and CdS. Through various photoelectricity tests (
e.g.
, PL spectra, EPR, photoelectric responsiveness and impedance), it could be found that the distinguished H
2
evolution was attributed to the improved charge carrier separation and electron generation. What's more, the enhanced H
2
production of H-Co
3
O
4
@CdS is related to the improved specific surface area (83.49 m
2
g
−1
) and pore volume (0.247 cm
3
g
−1
) as well. Density Functional Theory (DFT) calculations confirmed that CdS has the function of diverting electrons, and the orbital energy level of absorbed H
2
O molecules showed obvious migration due to the accumulation of electrons. Besides, the d-band of Co could induce more electrons to traverse the Fermi level. Subsequently, more electrons could be transferred from Co
3
O
4
to CdS and break the O-H
1
bond. Compared to the H-Co
3
O
4
@CdS system, the d-band center of the Co atoms in H-Co
3
O
4
@CdS-H
2
O shifted from −5.83 to −2.58 eV, thereby demonstrating that Co
3
O
4
served as an electron reservoir for charge redistribution in the photocatalytic water splitting process. In the end, a practicable mechanism for H-Co
3
O
4
@CdS about H
2
O dissociation and H
2
desorption was proposed.
A well-designed honeycomb Co
3
O
4
@CdS photocatalyst derived from cobalt foam was synthesized for high-efficiency visible-light H
2
evolution (
ca.
16 320 μmol h
−1
g
−1
).</description><identifier>ISSN: 2050-7488</identifier><identifier>EISSN: 2050-7496</identifier><identifier>DOI: 10.1039/d0ta11433b</identifier><ispartof>Journal of materials chemistry. A, Materials for energy and sustainability, 2021-05, Vol.9 (19), p.11665-11673</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Zhang, Chao</creatorcontrib><creatorcontrib>Liu, Baoquan</creatorcontrib><creatorcontrib>Li, Weiping</creatorcontrib><creatorcontrib>Liu, Xiangxue</creatorcontrib><creatorcontrib>Wang, Ke</creatorcontrib><creatorcontrib>Deng, Yifeng</creatorcontrib><creatorcontrib>Guo, Zhenmei</creatorcontrib><creatorcontrib>Lv, Zhiguo</creatorcontrib><title>A well-designed honeycomb CoO@CdS photocatalyst derived from cobalt foam for high-efficiency visible-light H evolution</title><title>Journal of materials chemistry. A, Materials for energy and sustainability</title><description>Well-designed honeycomb Co
3
O
4
@CdS (H-Co
3
O
4
@CdS) was fabricated
via
a one-step strategy for efficient water splitting. During the decoration of CdS, honeycomb Co
3
O
4
(H-Co
3
O
4
) with macropores was formed simultaneously. H-Co
3
O
4
could enhance CdS visible-light absorption capacity conspicuously and narrow its band gap from 2.08 to 1.03 eV. Therefore, H-Co
3
O
4
@CdS presented a remarkable H
2
production of up to
ca.
16 320 μmol g
−1
h
−1
(
λ
> 420 nm), nearly 7.3 times higher than that of pristine CdS, indicating the excellent synergistic effect between H-Co
3
O
4
and CdS. Through various photoelectricity tests (
e.g.
, PL spectra, EPR, photoelectric responsiveness and impedance), it could be found that the distinguished H
2
evolution was attributed to the improved charge carrier separation and electron generation. What's more, the enhanced H
2
production of H-Co
3
O
4
@CdS is related to the improved specific surface area (83.49 m
2
g
−1
) and pore volume (0.247 cm
3
g
−1
) as well. Density Functional Theory (DFT) calculations confirmed that CdS has the function of diverting electrons, and the orbital energy level of absorbed H
2
O molecules showed obvious migration due to the accumulation of electrons. Besides, the d-band of Co could induce more electrons to traverse the Fermi level. Subsequently, more electrons could be transferred from Co
3
O
4
to CdS and break the O-H
1
bond. Compared to the H-Co
3
O
4
@CdS system, the d-band center of the Co atoms in H-Co
3
O
4
@CdS-H
2
O shifted from −5.83 to −2.58 eV, thereby demonstrating that Co
3
O
4
served as an electron reservoir for charge redistribution in the photocatalytic water splitting process. In the end, a practicable mechanism for H-Co
3
O
4
@CdS about H
2
O dissociation and H
2
desorption was proposed.
A well-designed honeycomb Co
3
O
4
@CdS photocatalyst derived from cobalt foam was synthesized for high-efficiency visible-light H
2
evolution (
ca.
16 320 μmol h
−1
g
−1
).</description><issn>2050-7488</issn><issn>2050-7496</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNqFT7FuwjAUtFArFbUs3Su9HzB1GgrJBopAbB3aHTn2M3nIyUO2SZW_bwYEY2-4O93dckK8Zmqeqbx8tyrpLFvkeT0R0w_1qeRqUS4fbr4onsQsxpMaUSi1LMup6Dfwi95Li5GOHVpouMPBcFtDxV_ryn7DueHERifth5jAYqB-3LnALRiutU_gWLcjBWjo2Eh0jgxhZwboKVLtUfoxT7AH7NlfEnH3Ih6d9hFnV30Wb7vtT7WXIZrDOVCrw3C4_8n_6_8AIClPiA</recordid><startdate>20210518</startdate><enddate>20210518</enddate><creator>Zhang, Chao</creator><creator>Liu, Baoquan</creator><creator>Li, Weiping</creator><creator>Liu, Xiangxue</creator><creator>Wang, Ke</creator><creator>Deng, Yifeng</creator><creator>Guo, Zhenmei</creator><creator>Lv, Zhiguo</creator><scope/></search><sort><creationdate>20210518</creationdate><title>A well-designed honeycomb CoO@CdS photocatalyst derived from cobalt foam for high-efficiency visible-light H evolution</title><author>Zhang, Chao ; Liu, Baoquan ; Li, Weiping ; Liu, Xiangxue ; Wang, Ke ; Deng, Yifeng ; Guo, Zhenmei ; Lv, Zhiguo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-rsc_primary_d0ta11433b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><creationdate>2021</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Chao</creatorcontrib><creatorcontrib>Liu, Baoquan</creatorcontrib><creatorcontrib>Li, Weiping</creatorcontrib><creatorcontrib>Liu, Xiangxue</creatorcontrib><creatorcontrib>Wang, Ke</creatorcontrib><creatorcontrib>Deng, Yifeng</creatorcontrib><creatorcontrib>Guo, Zhenmei</creatorcontrib><creatorcontrib>Lv, Zhiguo</creatorcontrib><jtitle>Journal of materials chemistry. A, Materials for energy and sustainability</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Chao</au><au>Liu, Baoquan</au><au>Li, Weiping</au><au>Liu, Xiangxue</au><au>Wang, Ke</au><au>Deng, Yifeng</au><au>Guo, Zhenmei</au><au>Lv, Zhiguo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A well-designed honeycomb CoO@CdS photocatalyst derived from cobalt foam for high-efficiency visible-light H evolution</atitle><jtitle>Journal of materials chemistry. A, Materials for energy and sustainability</jtitle><date>2021-05-18</date><risdate>2021</risdate><volume>9</volume><issue>19</issue><spage>11665</spage><epage>11673</epage><pages>11665-11673</pages><issn>2050-7488</issn><eissn>2050-7496</eissn><abstract>Well-designed honeycomb Co
3
O
4
@CdS (H-Co
3
O
4
@CdS) was fabricated
via
a one-step strategy for efficient water splitting. During the decoration of CdS, honeycomb Co
3
O
4
(H-Co
3
O
4
) with macropores was formed simultaneously. H-Co
3
O
4
could enhance CdS visible-light absorption capacity conspicuously and narrow its band gap from 2.08 to 1.03 eV. Therefore, H-Co
3
O
4
@CdS presented a remarkable H
2
production of up to
ca.
16 320 μmol g
−1
h
−1
(
λ
> 420 nm), nearly 7.3 times higher than that of pristine CdS, indicating the excellent synergistic effect between H-Co
3
O
4
and CdS. Through various photoelectricity tests (
e.g.
, PL spectra, EPR, photoelectric responsiveness and impedance), it could be found that the distinguished H
2
evolution was attributed to the improved charge carrier separation and electron generation. What's more, the enhanced H
2
production of H-Co
3
O
4
@CdS is related to the improved specific surface area (83.49 m
2
g
−1
) and pore volume (0.247 cm
3
g
−1
) as well. Density Functional Theory (DFT) calculations confirmed that CdS has the function of diverting electrons, and the orbital energy level of absorbed H
2
O molecules showed obvious migration due to the accumulation of electrons. Besides, the d-band of Co could induce more electrons to traverse the Fermi level. Subsequently, more electrons could be transferred from Co
3
O
4
to CdS and break the O-H
1
bond. Compared to the H-Co
3
O
4
@CdS system, the d-band center of the Co atoms in H-Co
3
O
4
@CdS-H
2
O shifted from −5.83 to −2.58 eV, thereby demonstrating that Co
3
O
4
served as an electron reservoir for charge redistribution in the photocatalytic water splitting process. In the end, a practicable mechanism for H-Co
3
O
4
@CdS about H
2
O dissociation and H
2
desorption was proposed.
A well-designed honeycomb Co
3
O
4
@CdS photocatalyst derived from cobalt foam was synthesized for high-efficiency visible-light H
2
evolution (
ca.
16 320 μmol h
−1
g
−1
).</abstract><doi>10.1039/d0ta11433b</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 2050-7488 |
| ispartof | Journal of materials chemistry. A, Materials for energy and sustainability, 2021-05, Vol.9 (19), p.11665-11673 |
| issn | 2050-7488 2050-7496 |
| language | |
| recordid | cdi_rsc_primary_d0ta11433b |
| source | Royal Society Of Chemistry Journals 2008- |
| title | A well-designed honeycomb CoO@CdS photocatalyst derived from cobalt foam for high-efficiency visible-light H evolution |
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