Hydrothermal synthesis of monoclinic WO<sub>3</sub> and its photocatalytic hydrogen production performance

YANG Huan; WANG Gui-yun; TIAN Wei-song; TONG Chun-jie

Volume 46 Issue 11

Nov. 2018

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Article Navigation > Journal of Fuel Chemistry and Technology > 2018 > 46(11): 1359-1369

YANG Huan, WANG Gui-yun, TIAN Wei-song, TONG Chun-jie. Hydrothermal synthesis of monoclinic WO3 and its photocatalytic hydrogen production performance[J]. Journal of Fuel Chemistry and Technology, 2018, 46(11): 1359-1369.

Citation:

YANG Huan, WANG Gui-yun, TIAN Wei-song, TONG Chun-jie. Hydrothermal synthesis of monoclinic WO₃ and its photocatalytic hydrogen production performance[J]. Journal of Fuel Chemistry and Technology, 2018, 46(11): 1359-1369.

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Hydrothermal synthesis of monoclinic WO₃ and its photocatalytic hydrogen production performance

Hebei Provincial Key Laboratory of Green Chemical Technology & High Efficiency Energy Saving, Hebei University of Technology, Tianjin 300130, China

Funds:

the National Natural Science Foundation of China 21076058

National Natural Science Foundation of Hebei Province B2014202004

Received Date: 2018-07-17
Rev Recd Date: 2018-09-16

Available Online: 2021-01-23

Publish Date: 2018-11-10

Abstract

Abstract

Monoclinic WO₃ was successfully synthesized by the hydrothermal method using sodium tungstate as tungsten source, nitric acid as acid source, and citric acid (tartaric acid) as surfactant. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible diffuse reflectance (UV-vis-DR), and Brunner-Emmet-Teller (BET) were employed to characterize the structure and morphology of WO₃. The effects of molar ratios of nitric acid and citric acid (tartaric acid) to tungsten atoms on crystal phases and morphologies of WO₃ were investigated in detail. The results indicated that large amounts of nitric acid and addition of hydroxyl acids were found favorable for the formation of monoclinic WO₃. Monoclinic WO₃ was achieved under suitable conditions of molar ratios of nitric acid to tungsten atom of 2.8:1 and hydroxyl acids to tungsten atom of 0.8:1. The WO₃ was coupled with p-type semiconductor CuCrO₂ to fabricate the CuCrO₂-WO₃ composite photocatalyst. It was used for hydrogen production from photocatalytic decomposition of water. The monoclinic WO₃ with high crystalline perfection exhibited better photocatalytic properties.
- hydrothermal method,
- WO₃,
- crystal structure,
- photocatalysis,
- hydrogen production

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References(30)

References

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