低温液相一锅还原法制备Cu2O、Cu及Cu2O/Cu复合材料  

Preparation of Cu2O,Cu and Cu2O/Cu Composites by Low Temperature Liquid Phase One-Pot Reduction Method

作　　者：田雪梅 廖洪武 王中华[1,2] TIAN Xuemei;LIAO Hongwu;WANG Zhonghua(College of Chemistry and Chemical Engineering,China West Normal University,Nanchong Sichuan 637009,China;Key Laboratory of Chemical Synthesis and Pollution Control ofSichuan Province,China West Normal University,Nanchong Sichuan 637009,China)

机构地区：[1]西华师范大学化学化工学院,四川南充637009 [2]西华师范大学化学合成与污染控制四川省重点实验室,四川南充637009

出　　处：《西华师范大学学报（自然科学版）》2020年第2期185-189,共5页Journal of China West Normal University(Natural Sciences)

基　　金：化学合成与污染控制四川省重点实验室开放项目(CSPC2016-3-2);西华师范大学英才科研基金(17YC034)。

摘　　要：利用低温液相一锅还原法制备了Cu,Cu 2O及Cu 2O/Cu复合物,并用X-射线粉末衍射(XRD)和扫描电子显微镜(SEM)对合成的样品的组成和形貌进行了表征。研究结果表明,强碱性条件容易形成大颗粒Cu 2O,弱碱、低温及低浓度抗坏血酸条件下易形成纳米级小颗粒Cu 2O,而弱碱、高温及高浓度抗坏血酸条件下容易形成微米级大颗粒Cu单质。初步探讨了碱性条件下抗坏血酸还原二价铜(Cu 2+)的可能反应机理。Cu,Cu2O and Cu2O/Cu composites are prepared by low temperature liquid phase one-pot reduction method.The composition and morphology of the synthesized samples are characterized by X-ray powder diffraction(XRD)and scanning electron microscopy(SEM).The results show that it is very easy to form large particles of Cu2O under strong alkaline conditions,nano-sized small particles of Cu2O under weak alkali,low temperature and low concentration ascorbic acid conditions,and micron-sized large particles of Cu under weak alkali,high temperature and high concentration of ascorbic acid conditions.The possible reaction mechanism of ascorbic acid reducing divalent copper(Cu^2+)under alkaline conditions is preliminarily discussed.

关 键 词：低温液相一锅还原法 Cu 2O Cu Cu 2O/Cu复合材料 反应机理 

分 类 号：O611.4[理学—无机化学]