简单低温水浴法合成鳞片状氧化铜/四针状氧化锌晶须复合光催化剂

引用本文: 刘红, 邬小凤, 李湘奇, 王婕, 范希梅. 简单低温水浴法合成鳞片状氧化铜/四针状氧化锌晶须复合光催化剂[J]. 催化学报, 2014, 35(12): 1997-2005. doi: 10.1016/S1872-2067(14)60198-4 shu

Citation: Hong Liu, Xiaofeng Wu, Xiangqi Li, Jie Wang, Ximei Fan. Simple preparation of scale-like CuO nanoparticles coated on tetrapod-like ZnO whisker photocatalysts[J]. Chinese Journal of Catalysis, 2014, 35(12): 1997-2005. doi: 10.1016/S1872-2067(14)60198-4 shu

简单低温水浴法合成鳞片状氧化铜/四针状氧化锌晶须复合光催化剂

刘红 ^a,b, ,
邬小凤 ^a, ,
李湘奇 ^a, ,
王婕 ^a, ,
范希梅 ^{a,
,}

通讯作者: 范希梅

基金项目:
国家高技术研究发展计划(863计划, 2009AA03Z427). (863计划, 2009AA03Z427)

摘要: 以硝酸铜为原料, 聚乙二醇(PEG, M_w = 400)为稳定剂和模板剂, 采用简单的低温水浴合成法成功合成了四针状氧化锌晶须(T-ZnOw)表面负载鳞片状CuO的纳米复合光催化剂, 系统研究了复合催化剂样品的晶体结构和形貌, 通过荧光发光光谱(PL)和紫外光照射的条件下样品对阳离子污染物(亚甲蓝, MB)和阴离子污染物(甲基橙, MO)的光催化降解效率表征了样品的光催化性能, 同时采用ICP-AES详细分析了PEG 400浓度对T-ZnOw表面负载CuO纳米颗粒数量的影响.结果表明, T-ZnOw表面有序地沉积了大量鳞片状CuO纳米颗粒, 随着PEG 400浓度增加, T-ZnOw表面沉积的CuO纳米片数量逐渐增多, 且CuO纳米片在T-ZnOw表面的排列更加有序.同时, PEG 400浓度的变化对合成样品特征发光峰的强度也有一定影响, 当PEG 400浓度小于0.60 mol/L时, 合成样品特征发光峰强度随着PEG 400浓度增大而减小;当PEG 400浓度大于0.60 mol/L时, 样品的特征发光峰强度随之有所增加.在紫外光照射条件下, CuO/T-ZnOw纳米复合催化剂样品对MB和MO水溶液的降解均表现出优异的光催化活性, 当PEG 400浓度≤0.60 mol/L时, 样品的光催化活性随着PEG 400浓度的增大而增加;而当PEG 400浓度大于0.60 mol/L时, 样品的光催化活性反而有所降低.此外, 在相同条件下, 所有样品对MB水溶液的降解效率明显高于对MO水溶液的降解效率.

关键词:

English

Simple preparation of scale-like CuO nanoparticles coated on tetrapod-like ZnO whisker photocatalysts

1.
a. Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest JiaotongUniversity, Chengdu 610031, Sichuan, China;

Corresponding author: 范希梅

Received Date: 12 May 2014
Fund Project:
国家高技术研究发展计划(863计划, 2009AA03Z427).

Abstract: Scale-like copper oxide (CuO)/tetrapod-like ZnO whisker (T-ZnOw) nanocomposites were fabricated using poly(ethylene glycol) (PEG; M_w = 400) as a soft template by a simple and environmentally friendly method without the use of hydroxide reagents at low temperatures. The structures and morphologies of the samples were investigated in detail, and the photocatalytic properties of the samples were determined using photoluminescence (PL) detection and the photocatalytic degradation of cationic pollutant (methylene blue, MB) and anionic pollutant (methyl orange, MO) aqueous solutions under ultraviolet (UV) irradiation. Large numbers of scale-like CuO nanoparticles were deposited on the T-ZnOw surfaces in an ordered fashion; the amount of scale-like CuO nanoparticles increased, and the arrangement became more ordered with increasing PEG 400 content. The PL emission peak intensities of the samples changed with increasing PEG 400 content. All the CuO/T-ZnOw nanocomposites showed excellent photocatalytic activities in the degradation of MB and MO aqueous solutions under UV irradiation when the PEG 400 concentration was less than or equal to 0.60 mol/L. The photocatalytic properties of the samples improved with increasing PEG400 concentration, but deteriorated when the PEG 400 concentration was increased further; this was reflected by the emission peak intensities in the PL spectra. The nanocomposites showed better efficiency for MB degradation than for MO degradation under the same conditions.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

简单低温水浴法合成鳞片状氧化铜/四针状氧化锌晶须复合光催化剂

通讯作者: 范希梅

English

Simple preparation of scale-like CuO nanoparticles coated on tetrapod-like ZnO whisker photocatalysts

Corresponding author: 范希梅

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

简单低温水浴法合成鳞片状氧化铜/四针状氧化锌晶须复合光催化剂

通讯作者: 范希梅

English

Simple preparation of scale-like CuO nanoparticles coated on tetrapod-like ZnO whisker photocatalysts

Corresponding author: 范希梅

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

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