多级结构Ni@CuS复合物的合成及在提高催化还原4-硝基苯酚性能方面的应用

引用本文: 马亦然, 周苇, 曹薇, 郑金龙, 郭林. 多级结构Ni@CuS复合物的合成及在提高催化还原4-硝基苯酚性能方面的应用[J]. 物理化学学报, 2015, 31(10): 1949-1955. doi: 10.3866/PKU.WHXB201509091 shu

Citation: MA Yi-Ran, ZHOU Wei, CAO Wei, ZHENG Jin-Long, GUO Lin. Preparation of Hierarchical Ni@CuS Composites and the Application of the Enhanced Catalysis for 4-Nitrophenol Reduction[J]. Acta Physico-Chimica Sinica, 2015, 31(10): 1949-1955. doi: 10.3866/PKU.WHXB201509091 shu

多级结构Ni@CuS复合物的合成及在提高催化还原4-硝基苯酚性能方面的应用

基金项目:
国家自然科学基金(11079002, 51472014) (11079002, 51472014)

高等学校全国优秀博士学位论文作者专项资金(201331)资助项目 (201331)

摘要:

三种多级结构花状硫化铜通过水热法, 利用纳米薄片自组装形成. 加入有机分子聚乙烯吡咯烷酮或1,3,5-均苯三甲酸调控其片层密度. 产物作为基板生长镍纳米颗粒. 通过环境扫描电子显微镜(SEM), X射线衍射(XRD), 透射电子显微镜(TEM)等对这种复合物的结构进行表征. 利用紫外-可见吸收光谱, 研究了产物作为催化剂催化还原4-硝基苯酚的性能. 结果表明, 长在具有最稀疏片层的样品(Ni@SUB2)上的镍纳米颗粒(NiNPs, 直径5 nm左右)具有超低负载量, 为0.469% (w). Ni@SUB2在三种Ni@SUB复合物中具有最好的催化性能. 还原4-硝基苯酚的反应中, 4-硝基酚初始浓度为0.2 mmol·L^-1时Ni@SUB2在4 min中内转化率可以实现100%, 而等量的纯Ni纳米颗粒转化率只有43%. 增强的催化性能可以归结为镍纳米颗粒在硫化铜基板上得到良好分散, 可以提供更多催化位点. 同时硫化铜基板不溶于水, 可以通过离心的方式回收催化剂, 有利于环境保护.

关键词:

基板
/ 硫化铜
/ 镍
/ 纳米催化剂
/ 4-硝基苯酚

English

Preparation of Hierarchical Ni@CuS Composites and the Application of the Enhanced Catalysis for 4-Nitrophenol Reduction

1.
School of Chemistry and Environment, Beihang University, Beijing 100191, P. R. China
Received Date: 24 July 2015
Available Online: 10 October 2015
Fund Project:
国家自然科学基金(11079002, 51472014)

高等学校全国优秀博士学位论文作者专项资金(201331)资助项目

Abstract:

Three types of hierarchical, flower-like CuS particles were prepared by a hydrothermal method and samples were formulated as thin nanosheets. The aggregation density of the sheets could be readily controlled with the aid of polyvinylpyrrolidone (PVP) or 1,3,5-benzenetricarboxylic acid (BTC) organic molecules. The three substrates were then used for the growth of nickel nanocatalysts and the structures of the composites characterized by environment scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM). Ultraviolet-visible absorption spectrometry was applied to study the catalytic reduction of 4-nitrophenol. Results show that a sample of Ni nanoparticles (Ni NPs, ~5 nm in diameter) grown on CuS micro-flowers, composed of the sparsest nanosheets (Ni@SUB2) with an ultralow loading of 0.469% (w), showed the best catalytic properties amongst the three Ni@SUB composites. During reduction of 4-nitrophenol with initial 4-nitrophenol concentrations of 0.2 mmol·L^-1, the Ni@SUB2 showed almost 100% transformation within 4 min, while the same quantity of pure Ni NPs showed a transformation of only ~43%. The enhanced catalytic properties for 4-nitrophenol degradation could be ascribed to well-dispersed Ni NPs supported on the CuS substrate providing greater numbers of catalytic active sites. Furthermore, because of CuS is insoluble, it can be easily collected by centrifugation, which can be environmentally beneficial.

Key words:

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

多级结构Ni@CuS复合物的合成及在提高催化还原4-硝基苯酚性能方面的应用

English

Preparation of Hierarchical Ni@CuS Composites and the Application of the Enhanced Catalysis for 4-Nitrophenol Reduction

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

中国化学会秘书处

多级结构Ni@CuS复合物的合成及在提高催化还原4-硝基苯酚性能方面的应用

English

Preparation of Hierarchical Ni@CuS Composites and the Application of the Enhanced Catalysis for 4-Nitrophenol Reduction

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

中国化学会秘书处

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