Metal–organic frameworks (ZIF-67) as efficient cocatalysts for photocatalytic reduction of CO2: the role of the morphology effect

2018 ◽  
Vol 6 (11) ◽  
pp. 4768-4775 ◽  
Author(s):  
Mang Wang ◽  
Jinxuan Liu ◽  
Chunmei Guo ◽  
Xiaosu Gao ◽  
Chenghuan Gong ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Metal Organic Frameworks ◽  
Photocatalytic Reduction ◽  
Two Dimensional ◽  
Metal Organic ◽  
Morphology Effect ◽  
Reduction Of Co2 ◽  
Adsorption Capability

The two-dimensional ZIF-67 with a leaf-like morphology exhibited the best photocatalytic activity and stability due to the highest CO2 adsorption capability and efficient electron transfer from the excited [Ru(bpy)3]2+ to ZIF-67.

The role of leached Zr in the photocatalytic reduction of CO2 to formate by derivatives of UiO-66 metal organic frameworks

2020 ◽  
Vol 49 (15) ◽  
pp. 4751-4757 ◽  
Author(s):  
Moumita Bhattacharya ◽  
Kevin J. Chandler ◽  
Jackson Geary ◽  
Caroline T. Saouma
Keyword(s):  
Metal Organic Frameworks ◽  
Photocatalytic Reduction ◽  
Metal Organic ◽  
Reduction Of Co2 ◽  
Derivatives Of

Photoreduction of CO2 to formate by UiO-66 Zr MOF derivatives is explained by Zr leaching.

Synergistic effect of phosphomolybdic acid on rhodium-based metal-organic frameworks for the efficient selective photocatalytic reduction of CO2 to CO

2021 ◽  
Author(s):  
Yurong Shan ◽  
Dexiang Liu ◽  
Chunyan Xu ◽  
Peng Zhan ◽  
Hui Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Electronic Structure ◽  
Synergistic Effect ◽  
Metal Organic Frameworks ◽  
Phosphomolybdic Acid ◽  
Photocatalytic Reduction ◽  
Structure And Morphology ◽  
Spherical Structure ◽  
Metal Organic ◽  
Reduction Of Co2

In this work, PMA@NH2-MIL-68(Rh) with a mangosteen spherical structure was successfully synthesized by a hydrothermal method for the photocatalytic reduction of carbon dioxide. The electronic structure and morphology of the...

scholarly journals Photoreduction of Carbon Dioxide to Methanol over Copper Based Zeolitic Imidazolate Framework-8: A New Generation Photocatalyst

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 581 ◽  
Author(s):  
Sonam Goyal ◽  
Maizatul Shaharun ◽  
Chong Kait ◽  
Bawadi Abdullah ◽  
Mariam Ameen
Keyword(s):  
Photocatalytic Activity ◽  
Photoelectron Spectroscopy ◽  
Ammonium Hydroxide ◽  
Photocatalytic Reduction ◽  
Zeolitic Imidazolate Framework ◽  
X Ray ◽  
Efficient Reduction ◽  
Vis Spectroscopy ◽  
Metal Organic ◽  
Reduction Of Co2

The efficient reduction of CO2 into valuable products such as methanol, over metal-organic frameworks (MOFs) based catalyst, has received much attention. The photocatalytic reduction is considered the most economical method due to the utilization of solar energy. In this study, Copper (II)/Zeolitic Imidazolate Framework-8 (Cu/ZIF-8) catalysts were synthesized via a hydrothermal method for photocatalytic reduction of CO2 to methanol. The synthesized catalysts were characterized by X-ray Photoelectron Spectroscopy (XPS), Field Emission Scanning Electron Microscopy (FESEM) coupled with Energy Dispersive X-ray (EDX), Ultraviolet-visible (UV-vis) spectroscopy, and X-Ray Diffraction (XRD). The host ZIF-8, treated with 2 mmol copper prepared in 2M ammonium hydroxide solution showed the highest photocatalytic activity. The crystal structures of ZIF-8 and 2Cu/ZIF-8N2 catalysts were observed as cubic and orthorhombic, respectively and the XPS analysis confirmed the deposition of Cu (II) ions over ZIF-8 surface among all the prepared catalysts. The orthorhombic structure, nano-sized crystals, morphology and Cu loading of the 2Cu/ZIF-8N2 catalyst were the core factors to influence the photocatalytic activity. The yield of Methanol was found to be 35.82 µmol/L·g after 6 h of irradiations on 2Cu/ZIF-8N2 catalyst in the wavelength range between 530–580 nm. The copper-based ZIF-8 catalyst has proven as an alternative approach for the economical photocatalytic reduction of CO2 to CH3OH.

Zn/Mn–MOFs with `S-shaped' packing modes

2014 ◽  
Vol 70 (5) ◽  
pp. 502-507
Author(s):  
Hong-Jie Fan ◽  
Qian-Qian Xu ◽  
Tie-Zhen Ren ◽  
Xiang-Ying Xing ◽  
Kirsten E. Christensen
Keyword(s):  
Metal Ion ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Hydrothermal Conditions ◽  
Dimensional Network ◽  
Metal Organic

Two novel polymers exhibiting metal–organic frameworks (MOFs) have been synthesized by the combination of a metal ion with a benzene-1,3,5-tricarboxylate ligand (BTC) and 1,10-phenanthroline (phen) under hydrothermal conditions. The first compound, poly[[(μ4-benzene-1,3,5-tricarboxylato-κ4 O:O′:O′′:O′′′)(μ-hydroxido-κ2 O:O)bis(1,10-phenanthroline-κ2 N,N′)dizinc(II)] 0.32-hydrate], {[Zn2(C9H3O6)(OH)(C12H8N2)2]·0.32H2O} n , denoted Zn–MOF, forms a two-dimensional network in which a binuclear Zn2 cluster serves as a 3-connecting node; the BTC trianion also acts as a 3-connecting centre. The overall topology is that of a 63 net. The phen ligands serve as appendages to the network and interdigitate with phen ligands belonging to adjacent parallel sheets. The second compound, poly[[(μ6-benzene-1,3,5-tricarboxylato-κ7 O 1,O 1′:O 1:O 3:O 3′:O 5:O 5′)(μ3-hydroxido-κ2 O:O:O)(1,10-phenanthroline-κ2 N,N′)dimanganese(II)] 1.26-hydrate], {[Mn2(C9H3O6)(OH)(C12H8N2)]·1.26H2O} n , denoted Mn–MOF, exists as a three-dimensional network in which an Mn4 cluster serves as a 6-connecting unit, while the BTC trianion again plays the role of a 3-connecting centre. The overall topology is that of the rutile net. Phen ligands act as appendages to the network and form the `S-shaped' packing mode.

scholarly journals Iron(iii)-bipyridine incorporated metal–organic frameworks for photocatalytic reduction of CO2 with improved performance

2021 ◽  
Vol 50 (1) ◽  
pp. 384-390
Author(s):  
Yuan-Ping Wei ◽  
Sizhuo Yang ◽  
Peng Wang ◽  
Jin-Han Guo ◽  
Jier Huang ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Photocatalytic Reduction ◽  
Metal Organic ◽  
Improved Performance ◽  
Reduction Of Co2

A novel MOF UiO-68-Fe-bpy was constructed by post-synthetic modification of a Zr(iv)-based MOF UiO-68-NH2 as a photocatalyst for CO2 reduction.

Systematic variation of the optical bandgap in titanium based isoreticular metal–organic frameworks for photocatalytic reduction of CO2 under blue light

2017 ◽  
Vol 5 (23) ◽  
pp. 11854-11863 ◽  
Author(s):  
Matthew W. Logan ◽  
Suliman Ayad ◽  
Jeremy D. Adamson ◽  
Tristan Dilbeck ◽  
Kenneth Hanson ◽  
...  
Keyword(s):  
Blue Light ◽  
Metal Organic Frameworks ◽  
Optical Bandgap ◽  
Photocatalytic Reduction ◽  
Systematic Variation ◽  
Alkyl Substitution ◽  
Metal Organic ◽  
Reduction Of Co2

N-alkyl substitution–from methyl to heptyl–in isoreticular MIL-125-NH2 MOFs induces a stepwise decrease in the optical bandgap, while increasing CO2 photoreduction efficiencies.

scholarly journals Highly stable two-dimensional bismuth metal-organic frameworks for efficient electrochemical reduction of CO2

2020 ◽  
Vol 277 ◽  
pp. 119241 ◽  
Author(s):  
Fang Li ◽  
Geun Ho Gu ◽  
Changhyeok Choi ◽  
Praveen Kolla ◽  
Song Hong ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Metal Organic Frameworks ◽  
Two Dimensional ◽  
Metal Organic ◽  
Reduction Of Co2

scholarly journals A large π-conjugated ligand in metal-organic framework as opticalswitch to regulate the electron transfer pathway for highly selective reduction of CO2 to CH4

2021 ◽  
Author(s):  
Pei-Qin Liao ◽  
Yuanyuan Liu ◽  
Hao-Lin Zhu ◽  
Ning-Yu Huang ◽  
Xiao-Ming Chen
Keyword(s):  
Electron Transfer ◽  
High Performance ◽  
Theoretical Calculations ◽  
Metal Organic Framework ◽  
Photocatalytic Reduction ◽  
Faradaic Efficiency ◽  
Electron Transfer Pathway ◽  
Metal Organic ◽  
Reduction Of Co2 ◽  
Organic Framework

Abstract Here, we report a Cu-based metal-organic framework (Cu-DBC), constructed by the large π-conjugated ligand dibenzo-[g,p]chrysene-2,3,6,7,10,11,14,15-octaol and the square-pyramidal CuO5 nodes, as the photo-coupled electrocatalysts for CO2 reduction to CH4. Under visible light, it exhibits high performance for photocatalytic reduction of CO2 to CH4 with selectivity of 100% and rate of 1.04 μmol g-1 h-1, without additional photosensitizer. Importantly, at -1.4 V vs. RHE, it exhibits high performance for photo-coupled electroreduction of CO2 to CH4 with a Faradaic efficiency (CH4) of 93% and current density of 10.4 A g-1. Theoretical calculations, in-situ infrared spectroscopy investigation and Mott–Schottky measurements showed that the large conjugated ligand in Cu-DBC has the suitable lowest unoccupied molecular orbital (LUMO) to match well with the reduction potential of CO2/CH4 and serves as a photoswitch to regulate electron transfer pathway to the metal center, resulting highly selective photocatalytic reduction or photo-coupled electroreduction of CO2 to CH4.

Incorporation of a [Ru(dcbpy)(bpy)2]2+ photosensitizer and a Pt(dcbpy)Cl2 catalyst into metal–organic frameworks for photocatalytic hydrogen evolution from aqueous solution

2015 ◽  
Vol 3 (19) ◽  
pp. 10386-10394 ◽  
Author(s):  
Chun-Chao Hou ◽  
Ting-Ting Li ◽  
Shuang Cao ◽  
Yong Chen ◽  
Wen-Fu Fu
Keyword(s):  
Aqueous Solution ◽  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Metal Organic Frameworks ◽  
Photocatalytic Hydrogen Evolution ◽  
Metal Organic

UIO-67 MOFs functionalized with a [Ru(dcbpy)(bpy)2]2+ photosensitizer and a Pt(dcbpy)Cl2 catalyst display enhanced photocatalytic activity, due to the facile electron transfer from the Ru- to Pt-centers in the MOFs.

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