化工新型材料

化工新型材料 ›› 2018, Vol. 46 ›› Issue (7) : 194-197.

科学研究

沉淀法合成蘑菇状AgBr-Ag₃PO₄催化剂及其光催化性能研究

覃利琴, 周凤燕, 陶萍芳, 冯靖红

作者信息 +

Synthesis and photocatalysis of mushroom-like AgBr/Ag₃PO₄ nanocrystal photocatalst by coprecipitation

Qin Liqin, Zhou Fengyan, Tao Pingfang, Feng Jinghong

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文章历史 +

Received		Published
2017-03-21		2018-07-20
Issue Date	Revised Date
2018-08-07	2017-03-21

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摘要

以二甲基甲酰胺(DMF)为辅助剂,以硝酸银(AgNO₃)、磷酸二氢钾(KH₂PO₄)和十六烷基三甲基溴化铵(CTAB)为原料,采用简单的液相沉淀法一步合成蘑菇状纳米溴化银/磷酸银(AgBr/Ag₃PO₄)可见光催化剂,并对样品进行了表征,以甲基橙(MO)溶液(pH=2)为目标降解物研究其光催化性能。研究结果表明:合成的蘑菇状纳米AgBr/Ag₃PO₄可见光催化剂,其禁带宽度为1.97eV,对MO溶液有较好的可见光催化活性;在可见光照4min,0.08g AgBr/Ag₃PO₄对酸性MO溶液(200mL,8mg/L)的降解率达到97.86%,循环降解3次后降解率为95.21%。

Abstract

Mushroom-like silver bromide/silver phosphate (AgBr/Ag₃PO₄) nanocrystal photocatalst was synthesized with silver nitrate (AgNO₃),mono potassium phosphate (KH₂PO₄) and hexadecyl trimethyl ammonium bromide (CTAB) as the reactants by DMF assisted coprecipitation method,and characterized.The results revealed that the prepared AgBr/Ag₃PO₄ was cube structure with a band gap of 1.97eV.AgBr/Ag₃PO₄ Nanocrystal showed excellent photocatalytic activity and stable for methyl orange (MO)(pH=2).The photo-degradation efficiency of 0.08g AgBr/Ag₃PO₄ Nanocrystal was 97.86% after 4 min illumination in MO solution.The degradation rate of MO could reach 95.21% after cycled for three times.

关键词

蘑菇状AgBr/Ag₃PO₄ / 沉淀法 / 光催化性能

Key words

mushroom-like AgBr/Ag₃PO₄ / coprecipitation method / photocatalytic property

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沉淀法合成蘑菇状AgBr-Ag₃PO₄催化剂及其光催化性能研究[J]. 化工新型材料, 2018, 46(7): 194-197 DOI:

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参考文献

原文顺序 | 出版日期 | 本文引用

[1] Jiao Z B,Zhang Y,Yu H C,et al.Concave trisoctahedral Ag₃PO₄ microcrystals with high-index facets and enhanced photocatalytic properties[J].Chemical Communications,2013,49(6):636-638.
[2] Ren J,Chai Y Y,Liu Q Q,et al.Intercorrelated Ag₃PO₄ nanoparticles decorated with graphic carbon nitride:enhanced stability and photocatalytic activities for water treatment[J].Applied Surface Science,2017,403(1):177-186.
[3] Li X Z,Wu K L,Dong C,et al.Size-controlled synthesis of Ag₃PO₄ nanorods and their high-performance photocatalysis for dye degradation under visible-light irradiation[J].Materials Letters,2014,130(5):97-100.
[4] Cui X,Zheng Y F,Zhou H,et al.The effect of synthesis temperature on the morphologies and visible light photocatalytic performance of Ag₃PO₄[J].Journal of the Taiwan Institute of Chemical Engineers,2016,60(7):328-334.
[5] Katsumata H,Hayashi T,Taniguchi M,et al.Highly efficient visible-light driven AgBr/Ag₃PO₄ hybrid photocatalysts with enhanced photocatalytic activity[J].Materials Science in Semiconductor Processing,2014,25(18):68-75.
[6] Cao W R,An Y T,Chen L F,et al.Visible-light-driven Ag₂MoO₄/Ag₃PO₄ composites with enhanced photocatalytic activity[J].Journal of Alloys and Compounds,2017,701(15):350-357.
[7] Xu H,Zhao H Z,Song Y H,et al.g-C₃N₄/Ag₃PO₄ composites with synergistic effect for increased photocatalytic activity under the visible light irradiation[J].Materials Science in Semiconductor Processing,2015,39:726-734.
[8] Wang B,Gu X,Zhao Y,et al.A comparable study on the photocatalytic activities of Ag₃PO₄,AgBr and AgBr/Ag₃PO₄ hybrid microstructures[J].Applied Surface Science,2013,283(11):396-401.
[9] 覃利琴,谭明雄,陈渊,等.水热法一步合成球状AgBr/Ag₃PO₄复合催化剂及其光催化性能[J].化工新型材料,2016,44(5):87-89.
[10] Cao J,Luo B D,Lin H L,et al.Visible light photocatalytic activity enhancement and mechanism of AgBr/Ag₃PO₄ hybrids for degradation of methyl orange[J].Journal of Hazardous Materials,2012,217/218(38):107-115.
[11] 褚亮亮,董斌,周建伟,等.AgBr/Ag₃PO₄的制备、表征及光催化性能研究[J].化工新型材料,2015,43(7):134-136.
[12] Pongsaton A,Sumetha S.Photocatalytic degradation of dyes by AgBr/Ag₃PO₄ and the ecotoxicities of their degraded products[J].Chinese Journal of Catalysis,2016,37(5):711-719.
[13] Song X H,Li R P,Xiang M M,et al.Morphology and photodegradation performance of Ag₃PO₄ prepared by (NH₄)₃PO₄,(NH₄)₂HPO₄ and NH₄H₂PO₄[J].Ceramics International,2017,43(5):4692-4701.