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构建掺钡的AgPO/SnO型II纳米复合材料作为一种有前景的光催化剂，用于促进BY28染料的光催化降解以及Cr(VI)/Cr(III)的氧化还原转化。

Construction of Ba-doped AgPO/SnO type-II nanocomposites as a promising photocatalyst for boosting photocatalytic degradation of BY28 dye and redox conversion of Cr(VI)/Cr(III).

作者信息

Ghadirian-Arani Zeinab, Sadeghzadeh-Attar Abbas, Khorasani Mohammad

机构信息

Department of Metallurgy and Materials Engineering, University of Kashan, Kashan, P.O. Box 87317-53153, Iran.

出版信息

Heliyon. 2024 Sep 24;10(19):e38328. doi: 10.1016/j.heliyon.2024.e38328. eCollection 2024 Oct 15.

DOI:10.1016/j.heliyon.2024.e38328
PMID:39397901
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11470498/
Abstract

In the present study, Ba-doped AgPO/SnO type-II heterojunction nanocomposites were fabricated and systemically investigated for the degradation of basic yellow 28 (BY28) dye and Cr(VI) reduction in the photocatalytic process under visible-light irradiation. XRD, XPS, FESEM, DRS, and PL analyses were performed to determine the characterization of synthesized photocatalysts. The optimal 1.5 wt% Ba-doped AgPO/SnO nanocomposite exhibited an efficient photocatalytic activity with rate constant of 0.0491 min for BY28 degradation and 0.0261 min for Cr(VI) reduction, which is 13.3 and 7.5 times higher than that of the SnO nanorods. Such enhanced performance can arise from the one-dimensional structure, extended light absorption toward the visible region, formation of the type II heterojunction, the new defect-related energy states, and efficient charge separation. Furthermore, the photostability of the photocatalysts was studied and a plausible photocatalytic mechanism was proposed.

摘要

在本研究中，制备了Ba掺杂的AgPO/SnO II型异质结纳米复合材料，并对其在可见光照射下光催化降解碱性黄28（BY28）染料和还原Cr(VI)的性能进行了系统研究。通过XRD、XPS、FESEM、DRS和PL分析来确定合成光催化剂的特性。最佳的1.5 wt% Ba掺杂AgPO/SnO纳米复合材料表现出高效的光催化活性，降解BY28的速率常数为0.0491 min，还原Cr(VI)的速率常数为0.0261 min，分别是SnO纳米棒的13.3倍和7.5倍。这种性能增强源于一维结构、向可见光区域扩展的光吸收、II型异质结的形成、新的缺陷相关能态以及有效的电荷分离。此外，还研究了光催化剂的光稳定性，并提出了合理的光催化机理。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8d1/11470498/6d37dcb35ae3/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8d1/11470498/e962ded38381/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8d1/11470498/38e73363972e/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8d1/11470498/fadb9d4e4be4/gr9.jpg
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