Colloidal Synthesis and Photocatalytic Properties of Cu3NbS4 and Cu3NbSe4 Sulvanite Nanocrystals

IF 4.8 Q2 NANOSCIENCE & NANOTECHNOLOGY
Chen-Yu Chang, Roberto Prado-Rivera, Mimi Liu, Cheng-Yu Lai* and Daniela R. Radu*, 
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引用次数: 6

Abstract

Niobium sulvanites Cu3NbX4 (X = S, Se) have been theoretically predicted as promising candidates for solar photovoltaics and photocatalytic water splitting. This report outlines the first synthesis of Cu3NbS4 and Cu3NbSe4 in a nanocrystalline form. The crystal structures were investigated by X-ray diffraction, identity was confirmed by Raman spectroscopy, and the optoelectronic properties and morphology of Cu3NbS4 and Cu3NbSe4 nanocrystals were examined by UV–vis spectroscopy and transmission electron microscopy, respectively. To gain insight into the Cu3NbX4 formation, a mechanistic study was conducted for Cu3NbSe4 monitoring the nanoparticles’ formation as a function of reaction time. Methylene blue photodegradation tests were conducted to evaluate the photoactivity of Cu3NbS4 and Cu3NbSe4. The degradation rates, 2.81 × 10–2 min–1 and 1.22 × 10–2 min–1 proved the photocatalysts’ potential of nanoscale Cu3NbX4.

Abstract Image

Cu3NbS4和Cu3NbSe4硫化矿纳米晶的胶体合成及其光催化性能
硫铌酸盐Cu3NbX4(X=S,Se)在理论上被预测为太阳能光伏和光催化分解水的有前途的候选者。本报告概述了首次合成纳米晶形式的Cu3NbS4和Cu3NbSe4。通过X射线衍射研究了晶体结构,通过拉曼光谱证实了其一致性,并分别通过紫外-可见光谱和透射电子显微镜检查了Cu3NBC4和Cu3NbSe4纳米晶的光电性能和形态。为了深入了解Cu3NbX4的形成,对Cu3NbSe4进行了机理研究,监测纳米颗粒的形成与反应时间的关系。亚甲蓝光降解试验评价了Cu3NbS4和Cu3NbSe4的光活性。2.81×10–2 min–1和1.22×10–2min–1的降解速率证明了纳米Cu3NbX4的光催化剂潜力。
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来源期刊
ACS Nanoscience Au
ACS Nanoscience Au 材料科学、纳米科学-
CiteScore
4.20
自引率
0.00%
发文量
0
期刊介绍: ACS Nanoscience Au is an open access journal that publishes original fundamental and applied research on nanoscience and nanotechnology research at the interfaces of chemistry biology medicine materials science physics and engineering.The journal publishes short letters comprehensive articles reviews and perspectives on all aspects of nanoscience and nanotechnology:synthesis assembly characterization theory modeling and simulation of nanostructures nanomaterials and nanoscale devicesdesign fabrication and applications of organic inorganic polymer hybrid and biological nanostructuresexperimental and theoretical studies of nanoscale chemical physical and biological phenomenamethods and tools for nanoscience and nanotechnologyself- and directed-assemblyzero- one- and two-dimensional materialsnanostructures and nano-engineered devices with advanced performancenanobiotechnologynanomedicine and nanotoxicologyACS Nanoscience Au also publishes original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials engineering physics bioscience and chemistry into important applications of nanomaterials.
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