二维镍配位聚合物(Ni-CP)和Ag@Ni-CP肖特基结的制备及其光催化降解阳离子染料
Preparation and characterization of 2D nickel coordination polymer (Ni-CP) and Ag@Ni-CP Schottky junctions for photocatalytic degradation of cationic dyes
作者单位E-mail
马志虎 陕西省化学反应工程重点实验室, 新能源新功能材料实验室, 延安大学化学与化工学院, 延安 716000  
任宜霞 陕西省化学反应工程重点实验室, 新能源新功能材料实验室, 延安大学化学与化工学院, 延安 716000 renyixia1@163.com 
王智香 陕西省化学反应工程重点实验室, 新能源新功能材料实验室, 延安大学化学与化工学院, 延安 716000  
张美丽 陕西省化学反应工程重点实验室, 新能源新功能材料实验室, 延安大学化学与化工学院, 延安 716000  
王记江 陕西省化学反应工程重点实验室, 新能源新功能材料实验室, 延安大学化学与化工学院, 延安 716000  
摘要: 采用水热法合成了一种新的二维镍(Ⅱ)配位聚合物(Ni-CP),命名为[Ni (DDB)0.5(2,2'-bipy)(H2O)]·H2O (H4DDB=1,4-二(3,5-二羰基苯氧基)苯,2,2'-bipy=2,2'-联吡啶),并通过元素分析、热重分析、粉末X射线衍射、扫描电镜和X射线光电子能谱对其进行了表征。单晶结构分析表明,配位聚合物通过DDB4-配体以μ4方式形成二维波浪状网络结构。采用光还原法制备了具有肖特基结的Ag负载产品(Ag@Ni-CP)。研究了Ni-CP和Ag@Ni-CP的光催化降解性能,后者表现出优异的降解效果,特别是对罗丹明B和亚甲蓝,60 min内降解率快速高达99%,与报道的金属有机骨架催化剂材料相比,Ag@Ni-CP表现出更高更快的降解性能。通过自由基俘获实验研究了Ag@Ni-CP的光催化机理。
关键词: 镍配位聚合物  Ag@Ni-CP  晶体结构  光催化降解  阳离子染料
基金项目: 国家自然科学基金(No.22063010)和陕西青年创新团队项目资助。
Abstract: A new 2D nickel (Ⅱ) coordination polymer (Ni - CP) has been synthesized hydrothermally, named as [Ni(DDB)0.5(2,2'-bipy)(H2O)]·H2O (H4DDB=1,4-di(3,5-dicarboylphenoxy) benzene, 2,2'-bipy=2,2'-bipyridine), and characterized by element analysis, thermogravimetric analysis, powder X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy. Single-crystal structural analysis shows that the coordination polymer possesses a 2D waved network through DDB4- ligand in μ4 fashion. Ag-loaded products (Ag@Ni-CP) with Schottky junction were prepared by the photoreduction method. Photocatalytic degradation performance of Ni-CP and Ag@ Ni-CP were investigated, and the latter exhibited excellent degradation effect, especially for rhodamine B and methylene blue with a high degradation rate of 99% rapidly in 60 min. Ag@Ni-CP exhibited higher and faster degradation performance than the reported MOF catalyst materials. The photocatalytic mechanism was investigated by free radical trapping experiments.
Keywords: nickel(Ⅱ) coordination polymer  Ag@Ni-CP  crystal structure  photocatalytic degradation  cationic dye
投稿时间:2023-03-01 修订日期:2023-06-10
摘要点击次数:  1498
全文下载次数:  788
马志虎,任宜霞,王智香,张美丽,王记江.二维镍配位聚合物(Ni-CP)和Ag@Ni-CP肖特基结的制备及其光催化降解阳离子染料[J].无机化学学报,2023,39(10):2009-2019.
查看全文  查看/发表评论  下载PDF阅读器
Support information: 相关附件:   230060_ESI-5-31.docx