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具有增强光催化活性的Z型TiN@(A,R)TiO等离子体光催化剂的制备

Fabrication of Z-Type TiN@(A,R)TiO Plasmonic Photocatalyst with Enhanced Photocatalytic Activity.

作者信息

Wang Wanting, Wu Yuanting, Chen Long, Xu Chenggang, Liu Changqing, Li Chengxin

机构信息

Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Material Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China.

State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

出版信息

Nanomaterials (Basel). 2023 Jun 30;13(13):1984. doi: 10.3390/nano13131984.

DOI:10.3390/nano13131984
PMID:37446500
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10343924/
Abstract

Plasmonic effect-enhanced Z-type heterojunction photocatalysts comprise a promising solution to the two fundamental problems of current TiO-based photocatalysis concerning low-charge carrier separation efficiency and low utilization of solar illumination. A plasmonic effect-enhanced TiN@anatase-TiO/rutile-TiO Z-type heterojunction photocatalyst with the strong interface of the N-O chemical bond was synthesized by hydrothermal oxidation of TiN. The prepared photocatalyst shows desirable visible light absorption and good visible-light-photocatalytic activity. The enhancement in photocatalytic activities contribute to the plasma resonance effect of TiN, the N-O bond-connected charge transfer channel at the TiO/TiN heterointerface, and the synergistically Z-type charge transfer pathway between the anatase TiO (A-TiO) and rutile TiO (R-TiO). The optimization study shows that the catalyst with a weight ratio of A-TiO/R-TiO/TiN of approximately 15:1:1 achieved the best visible light photodegradation activity. This work demonstrates the effectiveness of fabricating plasmonic effect-enhanced Z-type heterostructure semiconductor photocatalysts with enhanced visible-light-photocatalytic activities.

摘要

等离子体效应增强的Z型异质结光催化剂有望解决当前基于TiO的光催化存在的两个基本问题，即低电荷载流子分离效率和低太阳能利用率。通过对TiN进行水热氧化，合成了具有强N-O化学键界面的等离子体效应增强的TiN@锐钛矿型TiO/金红石型TiO Z型异质结光催化剂。制备的光催化剂表现出良好的可见光吸收和可见光光催化活性。光催化活性的增强归因于TiN的等离子体共振效应、TiO/TiN异质界面处的N-O键连接的电荷转移通道以及锐钛矿型TiO（A-TiO）和金红石型TiO（R-TiO）之间协同的Z型电荷转移途径。优化研究表明，A-TiO/R-TiO/TiN重量比约为15:1:1的催化剂具有最佳的可见光光降解活性。这项工作证明了制备具有增强可见光光催化活性的等离子体效应增强的Z型异质结构半导体光催化剂的有效性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/dc945cfc062e/nanomaterials-13-01984-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/064fba665042/nanomaterials-13-01984-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/7f16dd928c36/nanomaterials-13-01984-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/c15f3e4323c9/nanomaterials-13-01984-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/d99919223551/nanomaterials-13-01984-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/c8ac26b3e4e5/nanomaterials-13-01984-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/9f319b78d715/nanomaterials-13-01984-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/34f68ff5f49c/nanomaterials-13-01984-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/9da23614ff8e/nanomaterials-13-01984-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/98394f739435/nanomaterials-13-01984-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/dc945cfc062e/nanomaterials-13-01984-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/064fba665042/nanomaterials-13-01984-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/7f16dd928c36/nanomaterials-13-01984-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/c15f3e4323c9/nanomaterials-13-01984-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/d99919223551/nanomaterials-13-01984-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/c8ac26b3e4e5/nanomaterials-13-01984-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/9f319b78d715/nanomaterials-13-01984-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/34f68ff5f49c/nanomaterials-13-01984-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/9da23614ff8e/nanomaterials-13-01984-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/98394f739435/nanomaterials-13-01984-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a816/10343924/dc945cfc062e/nanomaterials-13-01984-g010.jpg

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