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Hou W, Chen C, Xie D, Xu Y. Substituted Ti(IV) in Ce-UiO-66-NH 2 Metal-Organic Frameworks Increases H 2 and O 2 Evolution under Visible Light. ACS APPLIED MATERIALS & INTERFACES 2023; 15:2911-2921. [PMID: 36609181 DOI: 10.1021/acsami.2c18389] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Metal-organic frameworks (MOFs) as photocatalysts have received increasing attention. In this work, a dual metal-substituted UiO-66-NH2 (Ti/Ce-MOF) containing different Ti/Ce mole ratios (x = 0-2.46) has been prepared via post-synthetic exchange between Ce-UiO-66 and TiCl4, followed by amination. The solid had a high surface area (828-937 m2/g) and a large pore volume (0.451-0.507 m3/g). Under visible light, Ti/Ce-MOF showed x-dependent activity for H2O reduction and oxidation on a film electrode, respectively. However, such a change for H2 evolution in a Na2S/Na2SO3 aqueous solution was observed only after CdS loading. In combination with the photoluminescence and band parameters, we propose that the photoactivity of Ti/Ce-MOF for redox reaction is determined by its ability for electron transfer. Furthermore, there is an interfacial electron transfer from Ti/Ce-MOF to CdS and a hole transfer from CdS to Ti/Ce-MOF, respectively, significantly improving the efficiency of charge separation for redox reactions. This work offers a new insight that Ti substitution benefits the performance of Ce-based MOF.
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Affiliation(s)
- Wenqing Hou
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Chen Chen
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Diya Xie
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yiming Xu
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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Ding L, Sun Q, Yu Z, Sun L, Jiang R, Hou Y, Huang J, Zhong T, Chen H, Lian C, Fan B. Adjusting the match-degree between electron library and surface-active sites and forming surface polarization in MOF-based photo-cocatalysts for accelerating electron transfer. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01323a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Ni-CoP supported by a carbon matrix as the cocatalyst is synthesized by precisely controlling the pyrolysis temperature for the metal–organic framework, then loaded onto the CdS host catalyst by means of self-assembly for photocatalytic hydrogen production.
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Affiliation(s)
- Ling Ding
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Qianqian Sun
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Zebin Yu
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Lei Sun
- School of Chemical Engineering and Technology, Hainan University, Haikou 570228, PR China
| | - Ronghua Jiang
- School of Chemical and Environmental Engineering, Shaoguan University, Shaoguan 512005, P. R. China
| | - Yanping Hou
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Jun Huang
- College of Civil Engineering & Architecture, Guangxi University, Nanning 530004, P. R. China
| | - Tao Zhong
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Huajiao Chen
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - CuiFang Lian
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Ben Fan
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
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