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利用提取物绿色合成AgCl@AgI纳米复合材料及其作为可见光驱动光催化剂的应用。

Green synthesis of a AgCl@AgI nanocomposite using extract and its application as a visible-light-driven photocatalyst.

作者信息

Ruan Zhongyu, Liu Guihong, Shu Jinxia, Ren Chunguang, Wang Zhonghua

机构信息

Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University Nanchong Sichuan 637002 P. R. China

Yantai Institute of Materia Medica 39 Keji Road, Gaoxin District Yantai 264000 Shandong P. R. China

出版信息

RSC Adv. 2019 Feb 18;9(10):5858-5864. doi: 10.1039/c8ra09263j. eCollection 2019 Feb 11.

DOI:10.1039/c8ra09263j
PMID:35515915
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9060802/
Abstract

A AgCl@AgI composite photocatalyst was greenly synthesized using extract as the source of halogen anions, and characterized by XRD, SEM, TEM and XPS techniques. The photocatalytic activity and photochemical stability of the AgCl@AgI were investigated by the photodegradation of methyl orange (MO) azo dye under visible light illumination ( > 420 nm). The AgCl@AgI composite showed good photochemical stability and much higher photocatalytic activity than that of single AgCl and AgI. Mechanism studies showed that the main active species are photoinduced holes (h) and superoxide anion radicals (·O ). Finally, a plausible mechanism for the separation of photoinduced charge carriers was proposed.

摘要

以提取物作为卤素阴离子源绿色合成了AgCl@AgI复合光催化剂，并用XRD、SEM、TEM和XPS技术对其进行了表征。通过在可见光照射（>420 nm）下光降解甲基橙（MO）偶氮染料，研究了AgCl@AgI的光催化活性和光化学稳定性。AgCl@AgI复合材料表现出良好的光化学稳定性，且光催化活性比单一的AgCl和AgI高得多。机理研究表明，主要活性物种是光生空穴（h）和超氧阴离子自由基（·O ）。最后，提出了一个合理的光生电荷载流子分离机理。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf1e/9060802/e0862bc89bc4/c8ra09263j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf1e/9060802/2b5b195b9a5b/c8ra09263j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf1e/9060802/95b9e29bf636/c8ra09263j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf1e/9060802/e8b28743cb76/c8ra09263j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf1e/9060802/e0862bc89bc4/c8ra09263j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf1e/9060802/2b5b195b9a5b/c8ra09263j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf1e/9060802/95b9e29bf636/c8ra09263j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf1e/9060802/e8b28743cb76/c8ra09263j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf1e/9060802/e0862bc89bc4/c8ra09263j-f4.jpg

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