射线辐照对光催化用SnO2纳米粒子影响的研究

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2025-09-12 DOI:10.1016/j.nimb.2025.165862

Ruchi Bisht , G.C. Joshi , Jagat Pal Singh , Chandra Shekhar Joshi

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引用次数: 0

摘要

本文报道了γ辐照对SnO2纳米粒子（NPs）结构、光学和光催化活性的影响。采用简单、经济的化学共沉淀法合成样品，并用60、90、120、150 kGy的γ射线辐照。XRD谱图显示SnO2形成了纯相四方金红石结构。TEM和FESEM研究显示球形聚集的NPs。BET分析显示，与未辐照样品相比，150 kGy γ辐照样品的表面积增加。紫外可见分光光度法显示带隙能量从3.21 eV下降到2.92 eV。光致发光（PL）光谱显示了氧空位的形成和缺陷相关的可见发射。在光照75 min条件下，辐照剂量为150 kGy的SnO2 NPs对结晶紫染料的降解率达到92%。经过4次循环后，150 kGy γ辐照的SnO2 NPs的重复利用率为84%。

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Investigation of the effect of gamma-ray irradiation on SnO2 nanoparticles for photocatalysis application

Present work reports the influence of gamma-irradiation on structural, optical and photocatalytic activity of SnO₂ nanoparticles (NPs). A simple and cost-effective chemical co-precipitation method was adopted to synthesize the sample and irradiated with γ-ray doses of 60 kGy, 90 kGy, 120 kGy and 150 kGy. XRD patterns showed the formation of pure phase tetragonal rutile structure of SnO_2. TEM and FESEM studies revealed spherical-shaped agglomerated NPs. BET analysis revealed increased surface area in 150 kGy gamma-irradiated sample compared to unirradiated sample. UV–Vis spectrophotometry reveals decrease in band gap energy from 3.21 to 2.92 eV. Photoluminescence (PL) spectroscopy demonstrated formation of oxygen vacancies and defect-related visible emissions. SnO₂ NPs irradiated at 150 kGy dose of gamma ray showed better degradation efficiency of 92 % for crystal violet dye at optimized conditions under 75 min of sunlight exposure. The reusability of 150 kGy gamma-irradiated SnO₂ NPs showed efficiency of 84 % after four cycles.

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来源期刊

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.