Preparation of HPA/Bi<sub>2</sub>WO<sub>6</sub> and its photocatalytic properties for denitrification

CHEN Ying; XING Chen; JI Sheng-lun; LIANG Hong-bao

Volume 42 Issue 08

Aug. 2014

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CHEN Ying, XING Chen, JI Sheng-lun, LIANG Hong-bao. Preparation of HPA/Bi2WO6 and its photocatalytic properties for denitrification[J]. Journal of Fuel Chemistry and Technology, 2014, 42(08): 978-985.

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CHEN Ying, XING Chen, JI Sheng-lun, LIANG Hong-bao. Preparation of HPA/Bi₂WO₆ and its photocatalytic properties for denitrification[J]. Journal of Fuel Chemistry and Technology, 2014, 42(08): 978-985.

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Preparation of HPA/Bi₂WO₆ and its photocatalytic properties for denitrification

1.
Provincial Key Laboratory of Oil & Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, China;
2.
College of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, China

Received Date: 2014-05-22
Rev Recd Date: 2014-06-24
Publish Date: 2014-08-30

Abstract

Abstract

The HPA/Bi₂WO₆ was prepared with Na₂WO₄·2H₂O, Bi(NO₃)₃·5H₂O and different surfactant templates. The prepared sample was dried by the supercritical fluid drying (SCFD) method. It was characterized with XRD, FT-IR and SEM techniques and N₂ sorption experiment. Its photocatalytic properties were evaluated with denitrification of nitrogen-containing simulated oil as model reaction. It was shown that the sodium dodecyl sulfate (SDS) should be chosen as template. With this template, a highly dispersed, crystalline and active photocatalyst was obtained. This catalyst had a larger specific surface area. The SCFD method effectively decreased pore collapse and particles agglomeration degree, consequently increasing the specific surface area and improving the catalytic performance. Immobilization of H₃PW₁₂O₄₀ on Bi₂WO₆ increased the surface acid sites, and hence the photocatalytic activity. When the H₃PW₁₂O₄₀ loading was 10%, about 92.08% of nitrogen in simulated oil were removed by shining for 3 h with a xenon lamp at the m_catalysts/m_simulated oil ratio of 1:100.
- heteropoly acids,
- Bi₂WO₆,
- photocatalysis,
- supercritical fluid drying,
- denitrification

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References

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