A facile microwave-hydrothermal method to fabricate B doped ZnWO{sub 4} nanorods with high crystalline and highly efficient photocatalytic activity

Journal Article · Sun Oct 15 04:00:00 EDT 2017 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2017.06.021· OSTI ID:22730421

Liu, Zhen; Tian, Jian; Zeng, Debing ^[1]; Yu, Changlin ^[1]; Zhu, Lihua; Huang, Weiya ^[1]; Yang, Kai ^[2]; Li, Dehao ^[3]

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1. School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi (China)
2. State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002 (China)
3. Faculty of Environmental and Biological Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong (China)

Highlights: • High-crystallized B/ZnWO{sub 4} nanorods were fabricated via a fast microwave -hydrothermal method. • B doping effectively decreases particle size and increase in specific surface area. • The seperation of photogenerated e{sup −} and h{sup +} was largely promoted by B doping. • B/ZnWO{sub 4} exhibit super photocatalytic activity in degradation organic dyes. - Abstract: A series length of 50∼200 nm B doped ZnWO{sub 4} nanorods with high crystallinity were fabricated via a fast microwave-hydrothermal method. The effects of B doping on the physical properties of ZnWO{sub 4} nanorods were intensively characterized by N{sub 2} physical adsorption, XRD, TEM, FT-IR, XPS, ultraviolet-visible diffuse reflection spectrum (UV–vis DRS), photolunminescence spectrum (PL), transient photocurrent response (TPR). The results indicated that the doped B could replace the lattice tungsten ion in ZnWO{sub 4} crystals, which caused the lattice spacing contraction, particle size decrease, specific surface area increase. More importantly, the separation of the photogenerated electrons and holes in ZnWO{sub 4} was significantly enhanced by B doping. With doped optimum B concentration (2.42 wt%), B/ZnWO{sub 4} displayed super photocatalytic performance in dyes decomposition. The degradation rate constant (0.065 h{sup −1}) of Rhodamine B over B (2.42 wt%)/ZnWO{sub 4} is 4 times of that over ZnWO{sub 4} (0.016 h{sup −1}).

• OSTI ID: 22730421
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 94; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DOPED MATERIALS
FOURIER TRANSFORM SPECTROMETERS
HYDROGEN IONS 1 PLUS
MICROWAVE RADIATION
NANOSTRUCTURES
PARTICLE SIZE
PHOTOCATALYSIS
REACTION KINETICS
SPECIFIC SURFACE AREA
SYNTHESIS
TUNGSTEN IONS
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
ZINC TUNGSTATES