使用NdVO₄-V₂O₅混合粉末在可见光照射下光催化水分解制氧

Photocatalytic Water Splitting for O₂ Production under Visible Light Irradiation Using NdVO₄-V₂O₅ Hybrid Powders.

作者信息

Chiang Tzu Hsuan, Chen Tso-Ming

机构信息

Department of Energy Engineering, National United University, Lienda, Nan-Shi Li, Miaoli 36006, Taiwan.

出版信息

Materials (Basel). 2017 Mar 23;10(4):331. doi: 10.3390/ma10040331.

DOI:10.3390/ma10040331

PMID:28772692

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5506984/

Abstract

The study investigated photocatalytic water splitting for O₂ production under visible light irradiation using neodymium vanadium oxide (NdVO₄) and vanadium oxide (V₂O₅) hybrid powders. The results in a sacrificial agent of 0.01 M AgNO₃ solution were obtained, and the highest photocatalytic O₂ evolution was 2.63 μmol/h, when the hybrid powders were prepared by mixing Nd and V at a volume ratio of 1:3 at a calcination temperature of 350 °C for 1 h. The hybrid powders were synthesized by neodymium nitrate and ammonium metavanadate using the glycothermal method in ethylene glycol at 120 °C for 1 h. The hybrid powders consisted of two shapes, NdVO₄ nanoparticles and the cylindrical V₂O₅ particles, and they possessed the ability for photocatalytic oxygen (O₂) evolution during irradiation with visible light. The band gaps and structures of the hybrid powders were analyzed using UV-visible spectroscopy and transmission electron microscopy.

摘要

该研究使用钕钒氧化物（NdVO₄）和钒氧化物（V₂O₅）混合粉末，研究了在可见光照射下光催化水分解制氧的过程。在0.01 M硝酸银溶液作为牺牲剂的情况下得到了结果，当混合粉末通过在350℃煅烧1小时，以1:3的体积比混合钕和钒制备时，最高光催化析氧量为2.63 μmol/h。混合粉末由硝酸钕和偏钒酸铵在120℃的乙二醇中采用甘醇热法合成1小时。混合粉末由两种形状组成，即NdVO₄纳米颗粒和圆柱形V₂O₅颗粒，并且它们在可见光照射期间具有光催化析氧（O₂）的能力。使用紫外可见光谱和透射电子显微镜对混合粉末的带隙和结构进行了分析。