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用于高效光催化产氢的ZnInS纳米片的快速微波辅助合成

Rapid Microwave-Assisted Synthesis of ZnInS Nanosheets for Highly Efficient Photocatalytic Hydrogen Production.

作者信息

Chang Yu-Cheng, Chiao Yung-Chang, Hsu Po-Chun

机构信息

Department of Materials Science and Engineering, Feng Chia University, Taichung 407102, Taiwan.

Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA.

出版信息

Nanomaterials (Basel). 2023 Jun 27;13(13):1957. doi: 10.3390/nano13131957.

DOI:10.3390/nano13131957
PMID:37446473
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10343766/
Abstract

In this study, a facile and rapid microwave-assisted synthesis method was used to synthesize InS nanosheets, ZnS nanosheets, and ZnInS nanosheets with sulfur vacancies. The two-dimensional semiconductor photocatalysts of ZnInS nanosheets were characterized by XRD, FESEM, BET, TEM, XPS, UV-vis diffuse reflectance, and PL spectroscopy. The ZnInS with sulfur vacancies exhibited an evident energy bandgap value of 2.82 eV, as determined by UV-visible diffuse reflectance spectroscopy, and its energy band diagram was obtained through the combination of XPS and energy bandgap values. ZnInS nanosheets exhibited about 33.3 and 16.6 times higher photocatalytic hydrogen production than InS nanosheets and ZnS nanosheets, respectively, under visible-light irradiation. Various factors, including materials, sacrificial reagents, and pH values, were used to evaluate the influence of ZnInS nanosheets on photocatalytic hydrogen production. In addition, the ZnInS nanosheets revealed the highest photocatalytic hydrogen production from seawater, which was about 209.4 and 106.7 times higher than that of InS nanosheets and ZnS nanosheets, respectively. The presence of sulfur vacancies in ZnInS nanosheets offers promising opportunities for developing highly efficient and stable photocatalysts for photocatalytic hydrogen production from seawater under visible-light irradiation.

摘要

在本研究中，采用一种简便快速的微波辅助合成方法合成了具有硫空位的InS纳米片、ZnS纳米片和ZnInS纳米片。通过XRD、FESEM、BET、TEM、XPS、紫外可见漫反射和PL光谱对二维半导体光催化剂ZnInS纳米片进行了表征。通过紫外可见漫反射光谱测定，具有硫空位的ZnInS的明显能带隙值为2.82 eV，并通过XPS和能带隙值的结合得到了其能带图。在可见光照射下，ZnInS纳米片的光催化产氢量分别比InS纳米片和ZnS纳米片高约33.3倍和16.6倍。利用材料、牺牲试剂和pH值等各种因素来评估ZnInS纳米片对光催化产氢的影响。此外，ZnInS纳米片显示出从海水中光催化产氢的量最高，分别比InS纳米片和ZnS纳米片高约209.4倍和106.7倍。ZnInS纳米片中硫空位的存在为开发用于可见光照射下从海水中光催化产氢的高效稳定光催化剂提供了有前景的机会。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/b96c737bf341/nanomaterials-13-01957-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/d0d87e330d24/nanomaterials-13-01957-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/801c21448951/nanomaterials-13-01957-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/b96c737bf341/nanomaterials-13-01957-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/7d5d3e7f399d/nanomaterials-13-01957-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/9d0afcc390fc/nanomaterials-13-01957-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/11570415d09b/nanomaterials-13-01957-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/b61170e1030f/nanomaterials-13-01957-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/80e994c5ee91/nanomaterials-13-01957-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/e8044418a00b/nanomaterials-13-01957-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/d0d87e330d24/nanomaterials-13-01957-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/801c21448951/nanomaterials-13-01957-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ac1/10343766/b96c737bf341/nanomaterials-13-01957-g011.jpg

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