钽
氮化钽
光催化
计时安培法
材料科学
线性扫描伏安法
纳米颗粒
氮化物
吸光度
氧化物
光电化学
无机化学
化学工程
循环伏安法
纳米技术
催化作用
电化学
电极
化学
冶金
有机化学
图层(电子)
物理化学
工程类
色谱法
作者
Vijay Khanal,Rowshanak Irani,Sebastian Fiechter,Fatwa F. Abdi,Vaidyanathan Subramanian
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2019-01-01
卷期号:166 (5): H3294-H3299
被引量:9
摘要
The surfactant-assisted synthesis of tantalum oxide nanoparticles (Ta2O5), its subsequent nitridation to form tantalum nitride (Ta3N5), and the evaluation of the photoactivity of these nanoparticles, are presented. The surface, optical, and compositional characterization of the in-house synthesized photocatalysts indicate spherical nanoparticles with ϕ = 30 nm Ta2O5 and ϕ = 30 nm Ta3N5 with the latter photocatalysts showing absorbance onset at ∼ 630 nm. Photoelectrochemical analysis of the various photocatalyst films using chronoamperometry, linear sweep voltammetry, and impedance measurements attribute an improved photoactivity with the in-house catalysts to better charge generation, transport, and utilization. Initial results using Ta2O5 and Ta3N5 demonstrate photocatalytic activity toward conversion of colored pollutants.
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