Carbon-coated metal materials derived from metal-regulated coordination polymers and γ-polyglutamic acid for efficient removal of environmental pollutants

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications Pub Date : 2025-03-12 DOI:10.1016/j.inoche.2025.114318

Xiao-Yu Shi , Jian Luan , Nan Su , Cong Ma , Wen-Long Duan , Ye-Xia Li , Shao-Jie Wang

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Abstract

Since organic dye pollution has a detrimental impact on the environment, eliminating and separating them ought to be one of the best ways to address the problem. Two metal–organic coordination polymers (MOCPs), Cu-CP and Ni-CP, were successfully synthesized under hydrothermal conditions and utilized to degrade organic dyes in aqueous solution by photocatalysis. MOCPs were employed as precursors for carbon-coated metal materials (Cu@C and Ni@C) and vanillin-coated metal materials (Cu@γ-PGA and Ni@γ-PGA) by direct pyrolysis and doping pyrolysis, respectively. Doping γ-polyglutamic acid into intrinsic MOCPs significantly improved photocatalytic activity. Ni@γ-PGA demonstrated effective photocatalytic degradation of five organic dyes, particularly MB, with a 99.28 % efficiency. Experiments with free radical capture indicated that ·O₂⁻ was the most important factor in photocatalysis. Additionally, tests using photoluminescence (PL), photoelectrochemical (PEC) analysis, X-ray photoelectron spectroscopy (XPS), and UV–vis diffuse reflection spectrum (DRS) demonstrated that Ni@γ-PGA can improve the rapid migration and separation of photo-generated carriers, increase photocatalytic activity, and effectively delay the recombination of photo-generated charges. A new idea for the creation of effective and recyclable semiconductor photocatalytic materials was presented in this study.

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由金属调控配位聚合物和 γ-聚谷氨酸衍生的碳涂层金属材料可高效去除环境污染物

由于有机染料污染会对环境造成不利影响，因此消除和分离有机染料应该是解决这一问题的最佳途径之一。研究人员在水热条件下成功合成了两种金属有机配位聚合物（MOCPs）--Cu-CP 和 Ni-CP，并利用光催化技术降解了水溶液中的有机染料。通过直接热解和掺杂热解，MOCPs 分别被用作碳包覆金属材料（Cu@C 和 Ni@C）和香兰素包覆金属材料（Cu@γ-PGA 和 Ni@γ-PGA）的前驱体。在本征MOCPs中掺入γ-聚谷氨酸可显著提高光催化活性。Ni@γ-PGA 能有效光催化降解五种有机染料，尤其是甲基溴，效率高达 99.28%。自由基捕获实验表明，-O2- 是光催化中最重要的因素。此外，使用光致发光（PL）、光电化学（PEC）分析、X 射线光电子能谱（XPS）和紫外-可见漫反射光谱（DRS）进行的测试表明，Ni@γ-PGA 能够改善光生载流子的快速迁移和分离，提高光催化活性，并有效延迟光生电荷的重组。该研究为创造有效且可回收的半导体光催化材料提供了新思路。

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来源期刊

Inorganic Chemistry Communications 化学-无机化学与核化学

CiteScore

5.50

自引率

7.90%

发文量

1013

审稿时长

53 days

期刊介绍： Launched in January 1998, Inorganic Chemistry Communications is an international journal dedicated to the rapid publication of short communications in the major areas of inorganic, organometallic and supramolecular chemistry. Topics include synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis or organic compounds.