氧化锌/辉沸石复合光催化材料的制备及其性能

doi:10.11962/1006-4990.2020-0153

Abstract

Abstract:

Using ZnSO₄·7H₂O as precursor and stellerite as carrier,ZnO/stellerite photocatalytic composites were prepared by direct deposition.The phase compositions,aperture character and micromorphology of the as-prepared composites were char-acterized by XRD,BET and SEM,respectively.In addition,the effects of ZnO loading amounts and calcination temperatures on the degradation properties of methylene blue of nano-ZnO/stellerite photocatalytic composites were investigated.The re-sults showed that the composite material realized the close combination and effective dispersion of hexagonal lead zinc oxide and pyroxene,and the composites′ structure effectively inhibited the recombination of photogenerated-carrier,improved the adsorption performance and photocatalytic efficiency of the material.With 30%（mass ratio of ZnO to stellerite） ZnO loaded and calcination temperature of 300 ℃,the composite exhibited the best photocatalytic performance.

Key words: nano-ZnO, stellerite, photocatalysis, methylene blue

CLC Number:

TQ132.41

Yang Zhongqing,Yuan Fang,Wang Yi,Zhao Sheng,Sun Zhiming. Preparation and photocatalytic performance of ZnO/stellerite composite materials[J]. Inorganic Chemicals Industry, 2021, 53(2): 100-104.

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References 17

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样品	比表面积/ （m²·g^-1）	孔体积 / （cm³·g^-1）	平均孔径/ nm
辉沸石	6.351	0.017	10.651
SZ-10%-350 ℃	9.935	0.028	11.349
SZ-20%-350 ℃	12.122	0.030	9.851
SZ-30%-350 ℃	13.025	0.037	11.322
SZ-40%-350 ℃	11.975	0.032	10.777
SZ-50%-350 ℃	9.235	0.033	14.247

样品	煅烧温度/℃	时间/ h	平均晶粒尺寸/nm	k/ min^-1	R²
SZT-105 ℃	105	—	34.503 7	0.000 33	0.942 45
SZT-200 ℃	200	2	71.228 6	0.000 34	0.839 60
SZT-250 ℃	250	2	17.866 8	0.012 95	0.993 40
SZT-300 ℃	300	2	16.889 1	0.030 91	0.998 57
SZT-350 ℃	350	2	20.868 3	0.022 99	0.993 29
SZT-400 ℃	400	2	23.414 5	0.015 76	0.987 11
SZT-450 ℃	450	2	23.735 1	0.014 16	0.986 94
纯 ZnO	300	2	28.750 6	0.034 88	0.992 79

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Preparation and photocatalytic performance of ZnO/stellerite composite materials

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