Synthesis, characterization, and enhanced photocatalytic properties of NiWO4 nanobricks

被引：82

作者：

AlShehri, Saad M. ^{[1
]}

Ahmed, Jahangeer ^{[1
]}

Alzahrani, Abdulaziz M. ^{[1
]}

Ahamad, Tansir ^{[1
]}

机构：

[1] King Saud Univ, Coll Sci, Dept Chem, Riyadh 11451, Saudi Arabia

来源：

NEW JOURNAL OF CHEMISTRY | 2017年 / 41卷 / 16期

关键词：

METHYLENE-BLUE; TUNGSTATE NANOPARTICLES; OPTICAL-PROPERTIES; TEMPERATURE SYNTHESIS; CATALYTIC-ACTIVITY; GRAPHENE OXIDE; MWO4; M; DEGRADATION; PERFORMANCE; NI;

D O I：

10.1039/c7nj02085f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Brick shaped nanoparticles of nickel tungstate (NiWO4) were synthesized magnificently using the molten salts process at 500 degrees C. Powder X-ray diffraction (PXRD) and electron microscopy measurements were carried out to investigate the phase purity, crystal structure, and morphology (size and shape) of the NiWO4 nanobricks (diameters of similar to 20 nm). The BET surface area of the NiWO4 nanobricks was found to be similar to 25 m(2) g(-1). The optical properties of the NiWO4 nanobricks demonstrate a direct band gap of 2.95 eV. Thereupon, the photocatalytic activities of the NiWO4 nanobricks have been investigated for the degradation of methylene blue (MB) dye in neutral and basic media under solar light irradiation (SLI). The NiWO4 nanobricks show significant enhancement in the photo-degradation of MB dye solution in alkaline (similar to 100% in 50 minutes) and neutral media (similar to 80% in 330 minutes) as compared to bulk NiWO4 and previous reports of metal tungstate. ESI mass spectrometry was also carried out to confirm the photocatalytic degradation of dye molecules.

引用

页码：8178 / 8186

页数：9

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