Surfactant-assisted hydrothermal synthesis of NaTaO 3 nanotubes with enhanced photodegradation activity

Micro & nano letters

article

Haixia Hu¹  Yaqin Fu² 

[1] Zhejiang Industry Polytechnic College;Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, Zhejiang Sci-Tech University

关键词: semiconductor growth;    photodissociation;    visible spectra;    surfactants;    nanofabrication;    dyes;    semiconductor nanotubes;    ternary semiconductors;    sodium compounds;    photocatalysts;    hydrothermal synthesis;    enhanced photodegradation activity;    photocatalytic activity;    Na dodecyl sulphate surfactant;    enhanced light absorption;    ultraviolet light irradiation;    dominating active species;    as-synthesised NaTaO3 nanotubes;    sodium tantalum trioxide;    hydroxyl radicals;    superoxide radicals;    rhodamine B;    organic pollutants model;    photodegradation ratio;    cycle degradation results;    photochemical stability;    sodium tantalum trioxide nanotube photocatalyst;    time 80.0 min;    NaTaO3;   

DOI  :  10.1049/mnl.2019.0380

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

The morphology of photocatalysts plays an important role in their photocatalytic activity. Here, a novel sodium tantalum trioxide (NaTaO 3 ) nanotube photocatalyst was hydrothermally synthesised with the assistant of Na dodecyl sulphate (SDS) surfactant. The as-synthesised NaTaO 3 nanotubes presented an enhanced light absorption, compared with NaTaO 3 nanocubes prepared without the addition of SDS. By using rhodamine B (RhB) as organic pollutants model, the NaTaO 3 nanotubes exhibited a 96.2% of photodegradation ratio after 80 min ultraviolet light irradiation, which was much higher than NaTaO 3 nanocubes and commercial P25. The cycle degradation results revealed that NaTaO 3 nanotubes had an excellent photochemical stability. The active species trapping experiment suggested that the dominating active species were hydroxyl radicals and superoxide radicals, rather than holes.

【 授权许可】

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