固相反应合成ZnO/g-C3N4光催化剂及光催化性能

doi:10.11962/1006-4990.2019-0579

Abstract

Abstract:

ZnO/g-C₃N₄ photocatalysts were prepared by solid-state grinding method at room temperature using Zn（CH₃COO）₂,NaOH and g-C₃N₄ powders as raw materials.Sodium dodecylbenzenesulfonate powder was added as a surfactant.The photocatalytic properties of the composites were studied.Results showed that ZnO/g-C₃N₄ composites formed after solid-state grinding and that g-C₃N₄ was refined into thin sheets.The addition of sodium dodecylbenzenesulfonate powder promoted the phase transformation of g-C₃N₄.When the content of g-C₃N₄ was low,the product assumed a nanoflower morphology,which was composed of a large number of ZnO nanosheets loaded on g-C₃N₄ flakes.When the content of g-C₃N₄ was higher,the produc presented many 2D g-C₃N₄ nanosheets loaded by ZnO nanocrystals.The synthesized ZnO/g-C₃N₄ composites exhibited good visible-light photocatalytic activity to methylene blue.

Key words: ZnO, g-C₃N₄, photocatalysis, solid-phase grinding

CLC Number:

TQ426.6

Feng Yanxiang,Zhang Wangxi,Liang Baoyan. Study on synthesis of ZnO/g-C₃N₄ photocatalysts using solid phase reaction method and their photocatalytic property[J]. Inorganic Chemicals Industry, 2020, 52(10): 157-160.

Figures/Tables 8

References 10

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样品名称	m [Zn（CH₃COO）₂]	m （NaOH）	m（十二烷基苯磺酸钠）	m （g-C₃N₄）
ZnO/g-C₃N₄	3.67	8	0.00	0.086
L-ZnO/g-C₃N₄	3.67	8	3.06	0.086
H-ZnO/g-C₃N₄	3.67	8	3.06	1.087

催化剂	光源	功率/ W	光照距离/ cm	光照强度/（mW·cm^-2）	催化剂质量浓度/（g·L^-1）	污染物质量浓度/（mg·L^-1）	时间/ min	降解率/ %
ZnO/g-C₃N₄	氙灯	500	10	158	1.30	MB （10）	100	99.0
ZnO/C^[2]	氙灯	200	20	—	0.50	MB （20）	30	99.3
ZnO/GO^[3]	氙灯	300	10	—	1.00	RhB （10）	35	98.5
ZnO/g-C₃N₄^[5]	水银蒸汽灯	300	5	—	0.67	MB （1）	90	100.0
ZnO/mpg-C₃N₄^[6]	氙灯	500	—	—	0.50	MB（12.8）	150	82.5
N掺杂ZnO/g-C₃N₄^[8]	氙灯	300	—	115	0.25	RhB （5）	60	99.9
ZnO/g-C₃N₄^[9]	—	—	—	50	0.20	RhB（4）	100	85.0
ZnO/g-C₃N₄^[10]	氙灯	500	11	—	2.00	RhB （10）	150	97.6

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Study on synthesis of ZnO/g-C₃N₄ photocatalysts using solid phase reaction method and their photocatalytic property

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Study on synthesis of ZnO/g-C3N4 photocatalysts using solid phase reaction method and their photocatalytic property