Photocatalytic Obtaining and Optical Properties of Composites Based on Layered Niobates and Silver Nanoparticles

IF 0.7 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY Theoretical and Experimental Chemistry Pub Date : 2022-06-01 DOI:10.1007/s11237-022-09719-4

V. V. Shvalagin, G. Ya. Grodzyuk, S. Ya. Kuchmiy, M. A. Skoryk

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Abstract

The photocatalytic properties of layered semiconductors, namely KNb₃O₈, and a product of its acid treatment, namely K₃H₃Nb_10.8O₃₀ in the reduction reaction of silver ions with the formation of the corresponding metal-semiconductor nanostructures are established. Electron microscopy has shown that silver nanoparticles are deposited mainly on the edges of niobate rods and plates when potassium niobate suspensions are irradiated with UV light in the presence of AgNO₃. Silver nanoparticles of 10-30 nm are formed when K₃H₃Nb_10.8O₃₀ is used as a photocatalyst; they are deposited on the niobate surface and practically do not have a surface plasmon resonance band in the visible range of the spectrum, which may be associated with the formation of Ag₂O on the surface of silver nanoparticles or the formation of their chain aggregates.

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层状铌酸盐与纳米银复合材料的光催化制备及其光学性能

建立了层状半导体KNb3O8及其酸处理产物k3h3nb10.80 o30在银离子还原反应中形成相应的金属半导体纳米结构的光催化性能。电子显微镜显示，当铌酸钾悬浮液在AgNO3存在下用紫外光照射时，银纳米颗粒主要沉积在铌酸盐棒和板的边缘。以k3h3nb10.80 o30为光催化剂，形成10 ~ 30 nm的银纳米颗粒;它们沉积在铌酸盐表面，在可见光谱范围内实际上没有表面等离子体共振带，这可能与银纳米颗粒表面Ag2O的形成或其链状聚集体的形成有关。

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来源期刊

Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

1.60

自引率

10.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Theoretical and Experimental Chemistry is a journal for the rapid publication of research communications and reviews on modern problems of physical chemistry such as: a) physicochemical bases, principles, and methods for creation of novel processes, compounds, and materials; b) physicochemical principles of chemical process control, influence of external physical forces on chemical reactions; c) physical nanochemistry, nanostructures and nanomaterials, functional nanomaterials, size-dependent properties of materials.