Electrochemical deposition of p-type β-Ni(OH)2 nanosheets onto CdS nanorod array photoanode for enhanced photoelectrochemical water splitting
In this study, a novel three-dimensional (3D) CdS@Ni(OH)2 nanorod array (NRA) photoanode with a type-II band alignment and a p-n junction has been designed and constructed via a simple electrochemical deposition of hierarchical β-Ni(OH)2 nanosheets onto the surfaces of the CdS NRAs. The 3D CdS@Ni(OH...
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| Veröffentlicht in: | Electrochimica acta 2020-03, Vol.337, p.135763, Article 135763 |
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| container_title | Electrochimica acta |
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| creator | Wang, Yinsi Liang, Yujie Zeng, Dong Zhu, Min Fu, Junli Zhu, Tianyu Han, Hongsong Li, Cheng Wang, Wenzhong |
| description | In this study, a novel three-dimensional (3D) CdS@Ni(OH)2 nanorod array (NRA) photoanode with a type-II band alignment and a p-n junction has been designed and constructed via a simple electrochemical deposition of hierarchical β-Ni(OH)2 nanosheets onto the surfaces of the CdS NRAs. The 3D CdS@Ni(OH)2 NRA photoanode fabricated under the optimal deposition current exhibits remarkably improved photoelectrochemical water splitting performance, and obtains a photocurrent density of up to 1.1 mA/cm2, 5-fold that of the pure CdS NRA photoanode. Most importantly, the solar-to-hydrogen conversion efficiency of the 3D CdS@Ni(OH)2 NRA photoanode is 3.3-fold higher than that of the pure CdS NRA photoanode at 0.67 V vs. RHE. The electrochemical and photoluminescence emission measurements confirm that the enhanced PEC water splitting capability of the prepared 3D CdS@Ni(OH)2 NRA photoanode is attributed to the efficient charge separation, which is achieved by the synergistic action of the type-II energy alignment and the p-n junction. |
| doi_str_mv | 10.1016/j.electacta.2020.135763 |
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The 3D CdS@Ni(OH)2 NRA photoanode fabricated under the optimal deposition current exhibits remarkably improved photoelectrochemical water splitting performance, and obtains a photocurrent density of up to 1.1 mA/cm2, 5-fold that of the pure CdS NRA photoanode. Most importantly, the solar-to-hydrogen conversion efficiency of the 3D CdS@Ni(OH)2 NRA photoanode is 3.3-fold higher than that of the pure CdS NRA photoanode at 0.67 V vs. RHE. The electrochemical and photoluminescence emission measurements confirm that the enhanced PEC water splitting capability of the prepared 3D CdS@Ni(OH)2 NRA photoanode is attributed to the efficient charge separation, which is achieved by the synergistic action of the type-II energy alignment and the p-n junction.</description><identifier>ISSN: 0013-4686</identifier><identifier>EISSN: 1873-3859</identifier><identifier>DOI: 10.1016/j.electacta.2020.135763</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Alignment ; Arrays ; Deposition ; Heterojunction photoanode ; Nanorods ; Nanosheets ; Nickel compounds ; p-n junction ; P-n junctions ; PEC water splitting ; Photoanodes ; Photoelectric effect ; Photoelectric emission ; Photoluminescence ; Type II band alignment ; Visible light ; Water splitting</subject><ispartof>Electrochimica acta, 2020-03, Vol.337, p.135763, Article 135763</ispartof><rights>2020 Elsevier Ltd</rights><rights>Copyright Elsevier BV Mar 20, 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c258t-aa998827932a139cb0181d7935f32709047cfaefb024cedf50f0b67b823315753</citedby><cites>FETCH-LOGICAL-c258t-aa998827932a139cb0181d7935f32709047cfaefb024cedf50f0b67b823315753</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.electacta.2020.135763$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,45974</link.rule.ids></links><search><creatorcontrib>Wang, Yinsi</creatorcontrib><creatorcontrib>Liang, Yujie</creatorcontrib><creatorcontrib>Zeng, Dong</creatorcontrib><creatorcontrib>Zhu, Min</creatorcontrib><creatorcontrib>Fu, Junli</creatorcontrib><creatorcontrib>Zhu, Tianyu</creatorcontrib><creatorcontrib>Han, Hongsong</creatorcontrib><creatorcontrib>Li, Cheng</creatorcontrib><creatorcontrib>Wang, Wenzhong</creatorcontrib><title>Electrochemical deposition of p-type β-Ni(OH)2 nanosheets onto CdS nanorod array photoanode for enhanced photoelectrochemical water splitting</title><title>Electrochimica acta</title><description>In this study, a novel three-dimensional (3D) CdS@Ni(OH)2 nanorod array (NRA) photoanode with a type-II band alignment and a p-n junction has been designed and constructed via a simple electrochemical deposition of hierarchical β-Ni(OH)2 nanosheets onto the surfaces of the CdS NRAs. The 3D CdS@Ni(OH)2 NRA photoanode fabricated under the optimal deposition current exhibits remarkably improved photoelectrochemical water splitting performance, and obtains a photocurrent density of up to 1.1 mA/cm2, 5-fold that of the pure CdS NRA photoanode. Most importantly, the solar-to-hydrogen conversion efficiency of the 3D CdS@Ni(OH)2 NRA photoanode is 3.3-fold higher than that of the pure CdS NRA photoanode at 0.67 V vs. RHE. The electrochemical and photoluminescence emission measurements confirm that the enhanced PEC water splitting capability of the prepared 3D CdS@Ni(OH)2 NRA photoanode is attributed to the efficient charge separation, which is achieved by the synergistic action of the type-II energy alignment and the p-n junction.</description><subject>Alignment</subject><subject>Arrays</subject><subject>Deposition</subject><subject>Heterojunction photoanode</subject><subject>Nanorods</subject><subject>Nanosheets</subject><subject>Nickel compounds</subject><subject>p-n junction</subject><subject>P-n junctions</subject><subject>PEC water splitting</subject><subject>Photoanodes</subject><subject>Photoelectric effect</subject><subject>Photoelectric emission</subject><subject>Photoluminescence</subject><subject>Type II band alignment</subject><subject>Visible light</subject><subject>Water splitting</subject><issn>0013-4686</issn><issn>1873-3859</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqFkM1KAzEUhYMoWKvPYMCNLqbmZ2YysyxFrVB0oa5DmrmxKe1kTFKlL-HD-CA-k6kjLtwIF8I9nHMP-RA6pWRECS0vlyNYgY4qzYgRllReiJLvoQGtBM94VdT7aEAI5VleVuUhOgphSQgRpSAD9H61C3unF7C2Wq1wA50LNlrXYmdwl8VtB_jzI7uz5_fTC4Zb1bqwAIgBuzY6PGkevjXvGqy8V1vcLVx0SWkAG-cxtAvVamh6Hf7UvakIHoduZWO07fMxOjBqFeDk5x2ip-urx8k0m93f3E7Gs0yzooqZUnVdVUzUnCnKaz0ntKJNWgvDmSA1yYU2CsycsDxVm4IYMi_FvGKc00IUfIjO-ruddy8bCFEu3ca3qVKyPE-WMmcsuUTv0t6F4MHIztu18ltJidzBl0v5C1_u4MsefkqO-ySkT7xa8DJoCzsM1ie_bJz998YXl1yUQg</recordid><startdate>20200320</startdate><enddate>20200320</enddate><creator>Wang, Yinsi</creator><creator>Liang, Yujie</creator><creator>Zeng, Dong</creator><creator>Zhu, Min</creator><creator>Fu, Junli</creator><creator>Zhu, Tianyu</creator><creator>Han, Hongsong</creator><creator>Li, Cheng</creator><creator>Wang, Wenzhong</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20200320</creationdate><title>Electrochemical deposition of p-type β-Ni(OH)2 nanosheets onto CdS nanorod array photoanode for enhanced photoelectrochemical water splitting</title><author>Wang, Yinsi ; Liang, Yujie ; Zeng, Dong ; Zhu, Min ; Fu, Junli ; Zhu, Tianyu ; Han, Hongsong ; Li, Cheng ; Wang, Wenzhong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c258t-aa998827932a139cb0181d7935f32709047cfaefb024cedf50f0b67b823315753</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Alignment</topic><topic>Arrays</topic><topic>Deposition</topic><topic>Heterojunction photoanode</topic><topic>Nanorods</topic><topic>Nanosheets</topic><topic>Nickel compounds</topic><topic>p-n junction</topic><topic>P-n junctions</topic><topic>PEC water splitting</topic><topic>Photoanodes</topic><topic>Photoelectric effect</topic><topic>Photoelectric emission</topic><topic>Photoluminescence</topic><topic>Type II band alignment</topic><topic>Visible light</topic><topic>Water splitting</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Yinsi</creatorcontrib><creatorcontrib>Liang, Yujie</creatorcontrib><creatorcontrib>Zeng, Dong</creatorcontrib><creatorcontrib>Zhu, Min</creatorcontrib><creatorcontrib>Fu, Junli</creatorcontrib><creatorcontrib>Zhu, Tianyu</creatorcontrib><creatorcontrib>Han, Hongsong</creatorcontrib><creatorcontrib>Li, Cheng</creatorcontrib><creatorcontrib>Wang, Wenzhong</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Electrochimica acta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Yinsi</au><au>Liang, Yujie</au><au>Zeng, Dong</au><au>Zhu, Min</au><au>Fu, Junli</au><au>Zhu, Tianyu</au><au>Han, Hongsong</au><au>Li, Cheng</au><au>Wang, Wenzhong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrochemical deposition of p-type β-Ni(OH)2 nanosheets onto CdS nanorod array photoanode for enhanced photoelectrochemical water splitting</atitle><jtitle>Electrochimica acta</jtitle><date>2020-03-20</date><risdate>2020</risdate><volume>337</volume><spage>135763</spage><pages>135763-</pages><artnum>135763</artnum><issn>0013-4686</issn><eissn>1873-3859</eissn><abstract>In this study, a novel three-dimensional (3D) CdS@Ni(OH)2 nanorod array (NRA) photoanode with a type-II band alignment and a p-n junction has been designed and constructed via a simple electrochemical deposition of hierarchical β-Ni(OH)2 nanosheets onto the surfaces of the CdS NRAs. The 3D CdS@Ni(OH)2 NRA photoanode fabricated under the optimal deposition current exhibits remarkably improved photoelectrochemical water splitting performance, and obtains a photocurrent density of up to 1.1 mA/cm2, 5-fold that of the pure CdS NRA photoanode. Most importantly, the solar-to-hydrogen conversion efficiency of the 3D CdS@Ni(OH)2 NRA photoanode is 3.3-fold higher than that of the pure CdS NRA photoanode at 0.67 V vs. RHE. The electrochemical and photoluminescence emission measurements confirm that the enhanced PEC water splitting capability of the prepared 3D CdS@Ni(OH)2 NRA photoanode is attributed to the efficient charge separation, which is achieved by the synergistic action of the type-II energy alignment and the p-n junction.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.electacta.2020.135763</doi></addata></record> |
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| subjects | Alignment Arrays Deposition Heterojunction photoanode Nanorods Nanosheets Nickel compounds p-n junction P-n junctions PEC water splitting Photoanodes Photoelectric effect Photoelectric emission Photoluminescence Type II band alignment Visible light Water splitting |
| title | Electrochemical deposition of p-type β-Ni(OH)2 nanosheets onto CdS nanorod array photoanode for enhanced photoelectrochemical water splitting |
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