钒掺杂二氧化钛光催化活性研究

doi:10.11962/1006-4990.2019-0479

Abstract

Abstract:

TiO₂ has attracted more and more attention due to its excellent photocatalytic performance. Undoped TiO₂ photocatalyst and vanadium-doped TiO₂ photocatalyst were prepared by hydrolysis-hydrothermal-drying/calcination process using tetrabutyl titanate as raw material.The degradation rate of methyl orange solution was compared and analyzed.The results showed that it was feasible to prepare vanadium-doped TiO₂ photocatalyst by sol-gel method using tetrabutyl titanate as raw material.The optimal process conditions for V/TiO₂ products was as follows：vanadium-titanium mass ratio was 6∶100,hydrothermal temperature was 160 ℃,hydrothermal time was 12 h and drying at 120 ℃ for 14 h.Under ultraviolet light irradiation,the photocatalytic degradation efficiency of methyl orange reached 99.10%,and the degradation time was less than 45 min.

Key words: titaniumdioxide, photocatalysis, doping, degradation rate

CLC Number:

TQ134.11

Zhang Shuli,Xu Xupeng,Chen Shurui,Liu Qianshu,Wang Benju. Photocatalytic activity of vanadium doped titanium dioxide[J]. Inorganic Chemicals Industry, 2020, 52(8): 93-97.

Figures/Tables 17

References 11

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水平	因素
水平	A 钒钛质量比	B 水热温度/℃	C 煅烧温度/℃	D 水热时间/h
1	1∶100	120	0	10
2	6∶100	160	300	12
3	10∶100	200	500	16

序号	因素				降解率
序号	A	B	C	D	降解率
1	1∶100	120	0	10	0.876 4
2	1∶100	160	300	12	0.928 9
3	1∶100	200	500	16	0.790 2
4	6∶100	120	300	16	0.854 8
5	6∶100	160	500	10	0.928 9
6	6∶100	200	0	12	0.938 8
7	10∶100	120	500	12	0.329 8
8	10∶100	160	0	16	0.946 1
9	10∶100	200	300	10	0.779 2
K₁	2.595 5	2.061 0	2.761 3	2.584 5
K₂	2.722 5	2.803 9	2.562 9	2.197 5
K₃	2.055 1	2.508 2	2.048 9	2.591 1
k₁	0.865 2	0.687 0	0.920 4	0.861 5
k₂	0.907 5	0.934 6	0.854 3	0.732 5
k₃	0.685 0	0.836 1	0.683 0	0.863 7
R	0.222 5	0.247 6	0.237 5	0.131 2

编号	水热温度/℃	干燥温度/℃	煅烧温度/℃	编号	水热温度/℃	干燥温度/℃	煅烧温度/℃
1^#	0	120	0	3^#	120	120	0
2^#	0	120	500	4^#	250	120	0

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Inorganic Acid-Base-Salt Committee of CIESC

Photocatalytic activity of vanadium doped titanium dioxide

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