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Constructing Metal-Organic Framework Films with Adjustable Electronic Properties on Hematite Photoanode for Boosting Photogenerated Carrier Transport.
Xing, Xiu-Shuang; Zeng, Xuyang; Wu, Shaolong; Song, Peilin; Song, Xin; Guo, Yao; Li, Zehao; Li, He; Zhou, Zhongyuan; Du, Jimin.
Afiliación
  • Xing XS; International Joint Laboratory of Henan Photoelectric Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455000, P. R. China.
  • Zeng X; International Joint Laboratory of Henan Photoelectric Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455000, P. R. China.
  • Wu S; Institute of Inspection and Testing for Industrial Products, Jiangxi General Institute of Testing and Certification, Nanchang, 330052, P. R. China.
  • Song P; School of Optoelectronic Science and Engineering, Soochow University, Suzhou, 215006, P. R. China.
  • Song X; International Joint Laboratory of Henan Photoelectric Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455000, P. R. China.
  • Guo Y; College of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, 455000, P. R. China.
  • Li Z; College of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, 455000, P. R. China.
  • Li H; International Joint Laboratory of Henan Photoelectric Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455000, P. R. China.
  • Zhou Z; International Joint Laboratory of Henan Photoelectric Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455000, P. R. China.
  • Du J; College of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, 455000, P. R. China.
Small ; : e2404438, 2024 Aug 05.
Article en En | MEDLINE | ID: mdl-39101630
ABSTRACT
Hematite (α-Fe2O3) has become a research hotspot in the field of photoelectrochemical water splitting (PEC-WS), but the low photogenerated carrier separation efficiency limits further application. The electronic structure regulation, such as element doping and organic functional groups with different electrical properties, is applied to alleviate the problems of poor electrical conductivity, interface defects, and band mismatch. Herein, α-Fe2O3 photoanodes are modified to regulate their electric structures and improve photogenerated carrier transport by the bimetallic metal-organic frameworks (MOFs), which are constructed with Fe/Ni and terephthalate (BDC) with 2-substitution of different organic functional groups (─H, ─Br, ─NO2 and ─NH2). The α-Fe2O3 photoanode loaded with FeNi-NH2BDC MOF catalyst exhibits the optimal photocurrent density (2 mA cm-2) at 1.23 VRHE, which is 2.33 times that of the pure α-Fe2O3 photoanode. The detailed PEC analyses demonstrate that the bimetallic synergistic effect between Fe and Ni can improve the conductivity and inhibit the photogenerated carrier recombination of α-Fe2O3 photoanodes. The ─NH2 group as an electron-donor group can effectively regulate the electron distribution and band structure of α-Fe2O3 photoanodes to prolong the lifetime of photogenerated holes, which facilitates photogenerated carrier transport and further enhances the PEC-WS performance of α-Fe2O3 photoanode.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Alemania