Ag-NPs embedded in two novel Zn3/Zn5-cluster-based metal-organic frameworks for catalytic reduction of 2/3/4-nitrophenol.
By utilizing symmetrical pentacarboxylate ligands, 3,5-di(2',5'-dicarboxylphenyl)benzoic acid (H5L1) and 3,5-di(2',4'-dicarboxylphenyl)benzoic acid (H5L2), two novel porous Zn-MOFs, [Zn5(μ3-H2O)2(L1)2]·3DMA·4H2O (CTGU-3) and [Zn3(μ3-OH)L2(H2O)3]·H2O (CTGU-4) have been synthesized under solvothermal conditions. CTGU-3 and CTGU-4 exhibit 3D microporous frameworks with flu and dia topologies and possess unique secondary building units [Zn5(μ3-H2O)2(RCO2)6] and [Zn3(μ3-OH)(RCO2)3], respectively. Such porous systems create a unique space or surface to accommodate Ag nanoparticles (Ag NPs), which could efficiently prevent Ag NPs from aggregation and leaching. In this work, two new Ag@Zn-MOF composites, denoted as Ag@CTGU, have been successfully fabricated through solution infiltration, for the reduction of nitrophenol. Compared with CTGU-4, CTGU-3 shows enhanced catalytic efficiency toward the reaction when it is used as a catalyst support of Ag NPs. Moreover, gas sorption and luminescence properties of two compounds were also investigated.
College of Materials and Chemical Engineering, Collaborative Innovation Center for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, P. R. China. lidongsheng1@126.com.
Xue-Qian
XQ
Wu
College of Materials and Chemical Engineering, Collaborative Innovation Center for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, P. R. China. lidongsheng1@126.com.
Dan-Dan
DD
Huang
College of Materials and Chemical Engineering, Collaborative Innovation Center for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, P. R. China. lidongsheng1@126.com.
Zhi-Hang
ZH
Zhou
College of Materials and Chemical Engineering, Collaborative Innovation Center for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, P. R. China. lidongsheng1@126.com.
Wen-Wen
WW
Dong
College of Materials and Chemical Engineering, Collaborative Innovation Center for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, P. R. China. lidongsheng1@126.com.
Ya-Pan
YP
Wu
College of Materials and Chemical Engineering, Collaborative Innovation Center for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, P. R. China. lidongsheng1@126.com.
Jun
J
Zhao
College of Materials and Chemical Engineering, Collaborative Innovation Center for Microgrid of New Energy of Hubei Province, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, P. R. China. lidongsheng1@126.com.
Dong-Sheng
http://orcid.org/0000-0003-1283-6334
DS
Li
School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore. qczhang@ntu.edu.sgc.
Qichun
http://orcid.org/0000-0003-1854-8659
Q
Zhang
Department of Chemistry and Biochemistry, California State University, Long Beach, 1250 Bellflower Boulevard, Long Beach, CA 90840, USA.
Xianhui
http://orcid.org/0000-0002-2994-4051
X
Bu