纳米金刚石核/洋葱状碳壳材料的可见光光催化活性研究  

Study on visible light photocatalytic activity of nano diamond core/onion like carbon shell materials

作　　者：梁宝岩[1] 王长通 罗毅潼 韩丹辉 LIANG Baoyan;WANG Changtong;LUO Yitong;HAN Danhui(Materials and Chemical Engineering School,Zhongyuan University of Technology,Zhengzhou 450007,China;Editorial Department of the Journal,Zhongyuan University of Technology,Zhengzhou 450007,China;State Key Laboratory for High Performance Tools,Zhengzhou Research Institute for Abrasives&Grinding Co.,Ltd.,Zhengzhou 450001,China)

机构地区：[1]中原工学院材料与化工学院,河南郑州450007 [2]中原工学院学报编辑部,河南郑州450007 [3]郑州磨料磨具磨削研究所有限公司高性能工具全国重点实验室,河南郑州450001

出　　处：《中原工学院学报》2023年第6期11-16,共6页Journal of Zhongyuan University of Technology

基　　金：郑州市创新领军团队和河南省金刚石包覆技术、超硬复合材料创新型科技团队项目(CXTD2013048);河南省教育厅自然科学重点研究项目(23A430026,22A430041)。

摘　　要：对纳米金刚石退火后得到的核为金刚石/壳为石墨烯的复合材料(其曾表现出优异的吸附和光催化能力)进行了研究。结果表明:对粗颗粒(粒度为50 nm)的纳米金刚石进行高温退火处理,金刚石表面会石墨化,但不会形成洋葱石墨壳层;退火后的纳米金刚石也不具有对甲基橙溶液的光催化降解能力。采用爆轰法制备纳米金刚石(粒度为5 nm),并在高温(1 400~1 500℃)退火下获得了核/壳结构的纳米金刚石/洋葱状碳材料。研究发现:该复合材料具有良好的可见光光催化活性,经1 500℃退火的纳米金刚石在1 h内可让浓度为100mg/L的甲基橙溶液几乎完全降解。Through annealing nanodiamonds,a composite material featuring a diamond core and a graphene shell was synthesized.It exhibited excellent adsorption and photocatalytic capabilities.The results show that the surface of nano diamond with coarse particle size(particle size of 50 nm)may be graphitized after high-temperature annealing,but no onion graphite shell can be formed.The annealed nano diamond also had no photocatalytic degradation ability for methyl orange.Nanodiamond/onion like carbon materials with a core/shell structure were obtained by high-temperature annealing(1400~1500℃)of nano diamond(particle size of 5 nm)prepared by detonation method.The material exhibited commendable visible light photocatalytic activity.The nano diamond annealed at 1500℃can almost completely degrade 100 mg/L of methyl orange solution within 1 h.

关 键 词：纳米金刚石 光催化 核/壳结构 

分 类 号：TG146.1[一般工业技术—材料科学与工程]