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Guo Y, Xue Y, Li X, Li C, Song H, Niu Y, Liu H, Mai X, Zhang J, Guo Z. Effects of Transition Metal Substituents on Interfacial and Electronic Structure of CH 3NH 3PbI 3/TiO 2 Interface: A First-Principles Comparative Study. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E966. [PMID: 31266249 PMCID: PMC6669479 DOI: 10.3390/nano9070966] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 06/28/2019] [Indexed: 01/25/2023]
Abstract
To evaluate the influence of transition metal substituents on the characteristics of CH3NH3PbI3/TiO2, we investigated the geometrical and electronic properties of transition metal-substituted CH3NH3PbI3/TiO2 by first-principles calculations. The results suggested that the substitution of Ti4+ at the five-fold coordinated (Ti5c) sites by transition metals is energetically favored. The substituted interface has enhanced visible light sensitivity and photoelectrocatalytic activity by reducing the transition energies. The transition metal substitution can effectively tune the band gap of the interface, which significantly improves the photo-reactivity. The substituted systems are expected to be more efficient in separating the photo-generated electrons-holes and active in the visible spectrum.
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Affiliation(s)
- Yao Guo
- Department of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan 455000, China.
- Department of Mathematics and Physics, Anyang Institute of Technology, Anyang, Henan 455000, China.
| | - Yuanbin Xue
- Department of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan 455000, China
| | - Xianchang Li
- Department of Mathematics and Physics, Anyang Institute of Technology, Anyang, Henan 455000, China
| | - Chengbo Li
- Department of Mathematics and Physics, Anyang Institute of Technology, Anyang, Henan 455000, China
| | - Haixiang Song
- Department of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan 455000, China
| | - Yongsheng Niu
- Department of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan 455000, China.
| | - Hu Liu
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education;National Engineering Research Center for Advanced Polymer Processing Technology, ZhengzhouUniversity, Zhengzhou, Henan 450002, China
| | - Xianmin Mai
- School of Urban Planning and Architecture, Southwest Minzu University, Chengdu, Sichuan 610041, China
| | - Jiaoxia Zhang
- School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, China
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA.
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Chen Y, Qin H, Shi C, Li L, Hu J. High temperature CO2 sensing properties and mechanism of nanocrystalline LaCrO3 with rhombohedral structure: experiments and ab initio calculations. RSC Adv 2015. [DOI: 10.1039/c5ra05081b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Both experiment and calculation results show that CO2 captures electrons from the semiconductor surface.
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Affiliation(s)
- Yanping Chen
- School of Physics
- State Key Laboratory for Crystal Materials
- Shandong University
- Jinan 250100
- China
| | - Hongwei Qin
- School of Physics
- State Key Laboratory for Crystal Materials
- Shandong University
- Jinan 250100
- China
| | - Changmin Shi
- School of Physics
- State Key Laboratory for Crystal Materials
- Shandong University
- Jinan 250100
- China
| | - Ling Li
- School of Physics
- State Key Laboratory for Crystal Materials
- Shandong University
- Jinan 250100
- China
| | - Jifan Hu
- School of Physics
- State Key Laboratory for Crystal Materials
- Shandong University
- Jinan 250100
- China
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