Facile Synthesis of a Micro–Nano-Structured FeOOH/BiVO4/WO3 Photoanode with Enhanced Photoelectrochemical Performance
In the realm of photoelectrocatalytic (PEC) water splitting, the BiVO4/WO3 photoanode exhibits high electron–hole pair separation and transport capacity, rendering it a promising avenue for development. However, the charge transport and reaction kinetics at the heterojunction interface are suboptima...
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| Veröffentlicht in: | Catalysts 2024-11, Vol.14 (11), p.828 |
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| creator | Li, Ruixin Zhan, Faqi Wen, Guochang Wang, Bing Qi, Jiahao Liu, Yisi Feng, Chenchen La, Peiqing |
| description | In the realm of photoelectrocatalytic (PEC) water splitting, the BiVO4/WO3 photoanode exhibits high electron–hole pair separation and transport capacity, rendering it a promising avenue for development. However, the charge transport and reaction kinetics at the heterojunction interface are suboptimal. This study uses the hydrothermal–electrodeposition–dip coating–calcination method to prepare a microcrystalline WO3 photoanode thin film as the substrate material and combines it with nanocrystalline BiVO4 to form a micro–nano-structured heterojunction photoanode to enhance the intrinsic and surface/interface charge transport properties of the photoanode. Under the condition of 1.23 V vs. RHE, the photoelectric current density reaches 1.09 mA cm−2, which is twice that of WO3. Furthermore, by using a simple impregnation–mineralization method to load the amorphous FeOOH catalyst, a noncrystalline–crystalline composite structure is formed to increase the number of active sites on the surface and reduce the overpotential of water oxidation, lowering the onset potential from 0.8 V to 0.6 V (vs. RHE). The photoelectric current density is further increased to 2.04 mA cm−2 (at 1.23 V vs. RHE). The micro–nano-structure and noncrystalline–crystalline composite structure proposed in this study will provide valuable insights for the design and synthesis of high-efficiency photoelectrocatalysts. |
| doi_str_mv | 10.3390/catal14110828 |
| format | Article |
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However, the charge transport and reaction kinetics at the heterojunction interface are suboptimal. This study uses the hydrothermal–electrodeposition–dip coating–calcination method to prepare a microcrystalline WO3 photoanode thin film as the substrate material and combines it with nanocrystalline BiVO4 to form a micro–nano-structured heterojunction photoanode to enhance the intrinsic and surface/interface charge transport properties of the photoanode. Under the condition of 1.23 V vs. RHE, the photoelectric current density reaches 1.09 mA cm−2, which is twice that of WO3. Furthermore, by using a simple impregnation–mineralization method to load the amorphous FeOOH catalyst, a noncrystalline–crystalline composite structure is formed to increase the number of active sites on the surface and reduce the overpotential of water oxidation, lowering the onset potential from 0.8 V to 0.6 V (vs. RHE). The photoelectric current density is further increased to 2.04 mA cm−2 (at 1.23 V vs. RHE). The micro–nano-structure and noncrystalline–crystalline composite structure proposed in this study will provide valuable insights for the design and synthesis of high-efficiency photoelectrocatalysts.</description><identifier>ISSN: 2073-4344</identifier><identifier>EISSN: 2073-4344</identifier><identifier>DOI: 10.3390/catal14110828</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Bismuth oxides ; Charge transport ; Composite materials ; Composite structures ; Crystal lattices ; Crystal structure ; Crystallinity ; Current density ; Efficiency ; Heterojunctions ; Immersion coating ; Morphology ; Nanoparticles ; Oxidation ; Photoanodes ; Photoelectricity ; Reaction kinetics ; Spectrum analysis ; Synthesis ; Thin films ; Transport properties ; Vanadates ; Water splitting</subject><ispartof>Catalysts, 2024-11, Vol.14 (11), p.828</ispartof><rights>2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c151t-79454eb88019de1207555388b5a42299d5630f75fa5918658fab14e50ae4f66d3</cites><orcidid>0000-0003-1836-5211</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27923,27924</link.rule.ids></links><search><creatorcontrib>Li, Ruixin</creatorcontrib><creatorcontrib>Zhan, Faqi</creatorcontrib><creatorcontrib>Wen, Guochang</creatorcontrib><creatorcontrib>Wang, Bing</creatorcontrib><creatorcontrib>Qi, Jiahao</creatorcontrib><creatorcontrib>Liu, Yisi</creatorcontrib><creatorcontrib>Feng, Chenchen</creatorcontrib><creatorcontrib>La, Peiqing</creatorcontrib><title>Facile Synthesis of a Micro–Nano-Structured FeOOH/BiVO4/WO3 Photoanode with Enhanced Photoelectrochemical Performance</title><title>Catalysts</title><description>In the realm of photoelectrocatalytic (PEC) water splitting, the BiVO4/WO3 photoanode exhibits high electron–hole pair separation and transport capacity, rendering it a promising avenue for development. However, the charge transport and reaction kinetics at the heterojunction interface are suboptimal. This study uses the hydrothermal–electrodeposition–dip coating–calcination method to prepare a microcrystalline WO3 photoanode thin film as the substrate material and combines it with nanocrystalline BiVO4 to form a micro–nano-structured heterojunction photoanode to enhance the intrinsic and surface/interface charge transport properties of the photoanode. Under the condition of 1.23 V vs. RHE, the photoelectric current density reaches 1.09 mA cm−2, which is twice that of WO3. Furthermore, by using a simple impregnation–mineralization method to load the amorphous FeOOH catalyst, a noncrystalline–crystalline composite structure is formed to increase the number of active sites on the surface and reduce the overpotential of water oxidation, lowering the onset potential from 0.8 V to 0.6 V (vs. RHE). The photoelectric current density is further increased to 2.04 mA cm−2 (at 1.23 V vs. RHE). The micro–nano-structure and noncrystalline–crystalline composite structure proposed in this study will provide valuable insights for the design and synthesis of high-efficiency photoelectrocatalysts.</description><subject>Bismuth oxides</subject><subject>Charge transport</subject><subject>Composite materials</subject><subject>Composite structures</subject><subject>Crystal lattices</subject><subject>Crystal structure</subject><subject>Crystallinity</subject><subject>Current density</subject><subject>Efficiency</subject><subject>Heterojunctions</subject><subject>Immersion coating</subject><subject>Morphology</subject><subject>Nanoparticles</subject><subject>Oxidation</subject><subject>Photoanodes</subject><subject>Photoelectricity</subject><subject>Reaction kinetics</subject><subject>Spectrum analysis</subject><subject>Synthesis</subject><subject>Thin films</subject><subject>Transport properties</subject><subject>Vanadates</subject><subject>Water splitting</subject><issn>2073-4344</issn><issn>2073-4344</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpVkM1OwzAQhC0EElXpkbslzqF2bKfOEaqWIhVSqfwcI9dZK6nSuNiOqt54h74hT0JKOcBedqX9NKMZhK4puWUsJUOtgqopp5TIWJ6hXkxGLOKM8_M_9yUaeL8m3aSUSSp6aDdVuqoBL_dNKMFXHluDFX6qtLNfn4dn1dhoGVyrQ-ugwFPIstnwvnrL-PA9Y3hR2mA7pgC8q0KJJ02pGt2BPw-oQQdndQmbSqsaL8AZ6zZH4gpdGFV7GPzuPnqdTl7Gs2iePTyO7-aRpoKGaJRywWElJaFpAbQLIoRgUq6E4nGcpoVIGDEjYZRIqUyENGpFOQiigJskKVgf3Zx0t85-tOBDvratazrLnFHGSCxiyTsqOlFdau8dmHzrqo1y-5yS_Fhv_q9e9g0MWW3-</recordid><startdate>20241117</startdate><enddate>20241117</enddate><creator>Li, Ruixin</creator><creator>Zhan, Faqi</creator><creator>Wen, Guochang</creator><creator>Wang, Bing</creator><creator>Qi, Jiahao</creator><creator>Liu, Yisi</creator><creator>Feng, Chenchen</creator><creator>La, Peiqing</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><orcidid>https://orcid.org/0000-0003-1836-5211</orcidid></search><sort><creationdate>20241117</creationdate><title>Facile Synthesis of a Micro–Nano-Structured FeOOH/BiVO4/WO3 Photoanode with Enhanced Photoelectrochemical Performance</title><author>Li, Ruixin ; 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However, the charge transport and reaction kinetics at the heterojunction interface are suboptimal. This study uses the hydrothermal–electrodeposition–dip coating–calcination method to prepare a microcrystalline WO3 photoanode thin film as the substrate material and combines it with nanocrystalline BiVO4 to form a micro–nano-structured heterojunction photoanode to enhance the intrinsic and surface/interface charge transport properties of the photoanode. Under the condition of 1.23 V vs. RHE, the photoelectric current density reaches 1.09 mA cm−2, which is twice that of WO3. Furthermore, by using a simple impregnation–mineralization method to load the amorphous FeOOH catalyst, a noncrystalline–crystalline composite structure is formed to increase the number of active sites on the surface and reduce the overpotential of water oxidation, lowering the onset potential from 0.8 V to 0.6 V (vs. RHE). The photoelectric current density is further increased to 2.04 mA cm−2 (at 1.23 V vs. RHE). The micro–nano-structure and noncrystalline–crystalline composite structure proposed in this study will provide valuable insights for the design and synthesis of high-efficiency photoelectrocatalysts.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/catal14110828</doi><orcidid>https://orcid.org/0000-0003-1836-5211</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Bismuth oxides Charge transport Composite materials Composite structures Crystal lattices Crystal structure Crystallinity Current density Efficiency Heterojunctions Immersion coating Morphology Nanoparticles Oxidation Photoanodes Photoelectricity Reaction kinetics Spectrum analysis Synthesis Thin films Transport properties Vanadates Water splitting |
| title | Facile Synthesis of a Micro–Nano-Structured FeOOH/BiVO4/WO3 Photoanode with Enhanced Photoelectrochemical Performance |
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