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具有II型能带排列的磷掺杂g-CN/铑掺杂SrTiO的构建用于高效光催化析氢

The Construction of Phosphorus-Doped g-CN/Rh-Doped SrTiO with Type-II Band Alignment for Efficient Photocatalytic Hydrogen Evolution.

作者信息

Wang Bin, Li Peng, Hao Hanjing, He Huijie, Cai Hairui, Shang Fanfan, An Bei, Li Xiaoqian, Yang Shengchun

机构信息

MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic Physics, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China.

National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China.

出版信息

Nanomaterials (Basel). 2022 Dec 12;12(24):4428. doi: 10.3390/nano12244428.

DOI:10.3390/nano12244428
PMID:36558283
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9782634/
Abstract

It is of great importance to promote charge separation in photocatalysts for enhanced photocatalytic activity under visible light irradiation. In this work, a type-II heterostructured photocatalyst was constructed by compositing phosphorus-doped g-CN (P-CN) and Rh-doped SrTiO (Rh-STO) via a thermal calcination treatment. A series of characterizations were conducted to investigate the structure of heterostructured P-CN/Rh-STO. It was found that Rh-STO interacted with in situ generated P atoms from the decomposition of P-CN during the calcination process, thus leading to the formation of heterojunction of P-CN/Rh-STO. Compared with the single component, i.e., P-CN or Rh-STO, the obtained P-CN/Rh-STO showed superior photocatalytic activity to that of both P-CN and Rh-STO due to the effective charge separation across the heterojunction between P-CN and Rh-STO.

摘要

在可见光照射下促进光催化剂中的电荷分离以增强光催化活性具有极其重要的意义。在这项工作中，通过热煅烧处理将磷掺杂的g-CN（P-CN）和铑掺杂的SrTiO（Rh-STO）复合，构建了一种II型异质结构光催化剂。进行了一系列表征以研究异质结构P-CN/Rh-STO的结构。结果发现，在煅烧过程中，Rh-STO与P-CN分解原位生成的P原子相互作用，从而导致形成P-CN/Rh-STO异质结。与单一组分即P-CN或Rh-STO相比，由于P-CN和Rh-STO之间的异质结上有效电荷分离，所制备的P-CN/Rh-STO表现出优于P-CN和Rh-STO的光催化活性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/b08546da9343/nanomaterials-12-04428-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/3302446746e6/nanomaterials-12-04428-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/71e7196b4521/nanomaterials-12-04428-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/e7b70f3c58d6/nanomaterials-12-04428-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/f6c42de418e5/nanomaterials-12-04428-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/1a815518e9d0/nanomaterials-12-04428-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/b08546da9343/nanomaterials-12-04428-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/3302446746e6/nanomaterials-12-04428-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/71e7196b4521/nanomaterials-12-04428-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/e7b70f3c58d6/nanomaterials-12-04428-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/f6c42de418e5/nanomaterials-12-04428-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/1a815518e9d0/nanomaterials-12-04428-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afa/9782634/b08546da9343/nanomaterials-12-04428-g006.jpg

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