片状铋/钒酸铋复合催化剂的制备及其光催化性能

doi:10.11962/1006-4990.2020-0064

Abstract

Abstract:

A series of sheet-like Bi/BiVO₄ composite photocatalysts with different Bi contents were synthesized using solvo-thermal method.The prepared catalysts were characterized by using X-ray diffraction（XRD）,X-ray photoelectron spectro-scopy（XPS）,scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,ultraviolet-visible diffuse reflec-tion spectroscopy（UV-Vis DRS）,inductively coupled plasma optical emission spectroscopy（ICP-OES）,nitrogen adsorp-tion-desorption analysis and photocurrent response measurements.The photocatalytic performance of the sample was assessed by photodecomposition of methylene blue（MB） under xenon lamp irradiation.The results showed that the photocatalytic ac-tivity of BiVO₄ was enhanced significantly with Bi self-doping.Finally,the photocatalytic reaction mechanism of Bi/BiVO₄ composite was discussed by free radical capture experiments.

Key words: bismuth vanadate, composite semiconductor, photocatalysis, dye degradation

CLC Number:

O643.36

Feng Fei,Li Shuwen,Wang Tielin,Wang Weiguo,Wang Cunwen. Synthesis and photocatalytic performance of sheet-like Bi/BiVO₄ composite catalyst[J]. Inorganic Chemicals Industry, 2021, 53(1): 107-112.

Figures/Tables 13

References 22

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催化剂	比表面积/ （m²·g^-1）	孔容/ （cm³·g^-1）	孔径/ nm	n（Bi）/n（V）
BiVO₄	13.708 0	0.082 696	24.144 32	1.21
2-BiVO₄	13.731 1	0.079 239	22.263 1	—
3-BiVO₄	13.782 2	0.073 714	21.406 57	—
4-BiVO₄	9.872 8	0.049 779	20.196 73	1.37

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Inorganic Acid-Base-Salt Committee of CIESC

Synthesis and photocatalytic performance of sheet-like Bi/BiVO₄ composite catalyst

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