Cysteine and chicken egg white Co-capped Ag-nanoclusters for efficient photocatalytic applications

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Sol-Gel Science and Technology Pub Date : 2025-03-07 DOI:10.1007/s10971-025-06720-w

Andrew Okram, Ashish Kumar Singh, Manjeet Singh

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Abstract

This research involved the synthesis of silver nanoclusters co-capped by chicken egg white (CEW) and cysteine for photocatalytic degradation. The determination of size and morphology of synthesized CEW and cysteine co-capped AgNCs (CC-AgNCs) have been carried out by using TEM (Transmission Electron Microscopy), XRD (X-ray diffraction), HRMS (high-resolution mass spectroscopy) and XPS (X-ray photoelectron spectroscopy) analysis. The optical properties have been studied using UV-visible and photoluminescence spectroscopy (PL). The simultaneous capping resulted in ultra-small AgNCs having average size of 2–3 nm. The HRMS indicated the formation of Ag2, Ag3, Ag5 and Ag9 clusters, while other existing methods shows nanoclusters formation having higher number of atoms. The nanoclusters formation having less atoms was due to the strong co-capping from both ligands. The synthesized CC-AgNCs displayed notably high photocatalytic degradation efficeincy for toxic methylene blue dye. The degradation efficiency of the synthesized CC-AgNCs was 88% within 60 min under irradiation by 30 W LED light, showcasing outstanding performance in comparison to the AgNCs synthesized using cysteine and chicken egg white separately as capping ligand.

Graphical Abstract

The transition of electron from HOMO to LUMO in the Ag-nanoclusters generates electron in LUMO and hole in HOMO for the photocatalytic degradation of methylene blue dye.

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半胱氨酸和蛋清共盖银纳米团簇的高效光催化应用

本文研究了以蛋清和半胱氨酸共盖的银纳米团簇的合成及其光催化降解作用。采用透射电镜（TEM）、x射线衍射（XRD）、高分辨率质谱（HRMS）和x射线光电子能谱（XPS）分析，对合成的CEW和半胱氨酸共包合agnc （cc - agnc）进行了尺寸和形貌的测定。利用紫外可见光谱和光致发光光谱（PL）对其光学性质进行了研究。同时封盖导致了平均尺寸为2-3纳米的超小型agnc。HRMS显示了Ag2， Ag3， Ag5和Ag9簇的形成，而其他现有的方法显示了原子数更高的纳米簇的形成。原子数量较少的纳米簇的形成是由于两种配体的强共盖作用。合成的CC-AgNCs对有毒亚甲基蓝染料表现出较高的光催化降解效率。在30 W LED光照射下，合成的cc - agnc在60 min内的降解效率为88%，与以半胱氨酸和蛋清分别作为盖层配体合成的agnc相比，表现出优异的性能。ag纳米团簇中电子从HOMO到LUMO的跃迁产生LUMO上的电子和HOMO上的空穴，用于光催化降解亚甲基蓝染料。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.