Bio-proton coupled semiconductor/metal-complex hybrid photoelectrocatalytic interface for efficient CO2 reduction

2019 ◽  
Vol 21 (2) ◽  
pp. 339-348 ◽  
Author(s):  
Jibo Liu ◽  
Chenyan Guo ◽  
Xiaojun Hu ◽  
Guohua Zhao
Keyword(s):  
Proton Transfer ◽  
Metal Complex ◽  
High Efficiency ◽  
Co2 Reduction ◽  
Semiconductor Substrate ◽  
Molecular Catalyst ◽  
Proton Coupling ◽  
Complex Hybrid ◽  
Complex Semiconductor

Aimed at high-efficiency biomimetic CO2 photoelectrochemical conversion, a bio-proton coupling metal-complex/semiconductor hybrid photoelectrocatalytic interface (Ru-BNAH/TiO2/Cu2O) was constructed by covalently modifying an in situ proton-transfer functionized molecular catalyst (Ru-BNAH) on the surface of a TiO2/Cu2O composite semiconductor substrate electrode.

scholarly journals A review on the state-of-the-art advances for CO2 electro-chemical reduction using metal complex molecular catalysts

2019 ◽  
Vol 44 (1) ◽  
pp. 11
Author(s):  
Hitler Louis ◽  
Ozioma Udochukwu Akakuru ◽  
Philip Monday ◽  
Oyebanji Oluwatomisin Funmilayo
Keyword(s):  
Metal Complex ◽  
Theoretical Calculations ◽  
Chemical Reduction ◽  
Co2 Reduction ◽  
Molecular Catalyst ◽  
Global Problems ◽  
Carbon Dioxide Co2 ◽  
Molecular Catalysts ◽  
Reduction Catalysts

Significantly, global warming which is caused by CO2 emission and energy shortage are global problems resulting from artificial photosynthesis because it required many functions (light harvesting, Z water, and oxidation scheme). Therefore, photocatalytic systems development for CO2 reduction is germane in this field. Metal complexes molecular catalyst have become prevalent homogeneous catalysts for carbon dioxide (CO2) photocatalytic reduction since it was initially known as CO2 reduction catalysts in the 70s and the 80s, while utmost part involved macrocyclic cobalt(II) and nickel(II) complexes. This review article presents a broad understanding on some active catalysts recently reported as a metal complex molecular catalytic schemes for CO2 reduction, alongside catalytic activity, stability, selectivity under electro-reduction, and photoreduction circumstances. The progress of in situ spectroelectrochemical methods, typically supported via theoretical calculations, helped to access this know-how by providing information which enabled researchers to acquire more in-depth perception into unveiling the catalytic reaction and mechanisms intermediates.

Direct assembly synthesis of metal complex–semiconductor hybrid photocatalysts anchored by phosphonate for highly efficient CO2 reduction

2011 ◽  
Vol 47 (30) ◽  
pp. 8673 ◽  
Author(s):  
Tomiko M. Suzuki ◽  
Hiromitsu Tanaka ◽  
Takeshi Morikawa ◽  
Masayo Iwaki ◽  
Shunsuke Sato ◽  
...  
Keyword(s):  
Metal Complex ◽  
Co2 Reduction ◽  
Highly Efficient ◽  
Direct Assembly ◽  
Complex Semiconductor

scholarly journals A CO2 adsorption-enhanced semiconductor/metal-complex hybrid photoelectrocatalytic interface for efficient formate production

2016 ◽  
Vol 9 (10) ◽  
pp. 3161-3171 ◽  
Author(s):  
Xiaofeng Huang ◽  
Qi Shen ◽  
Jibo Liu ◽  
Nianjun Yang ◽  
Guohua Zhao
Keyword(s):  
Metal Complex ◽  
Co2 Adsorption ◽  
Carbon Aerogel ◽  
Molecular Catalyst ◽  
Complex Hybrid ◽  
Formate Production

A biomimetic interface based on molecular catalyst Ru(bpy)2dppz, photoelectrocatalyst Co3O4, and CO2 fixation substrate carbon aerogel converts CO2 to formate.

Interfacial Manipulation by Rutile TiO2 Nanoparticles to Boost CO2 Reduction into CO on a Metal-Complex/Semiconductor Hybrid Photocatalyst

2017 ◽  
Vol 9 (28) ◽  
pp. 23869-23877 ◽  
Author(s):  
Keisuke Wada ◽  
Chandana Sampath Kumara Ranasinghe ◽  
Ryo Kuriki ◽  
Akira Yamakata ◽  
Osamu Ishitani ◽  
...  
Keyword(s):  
Metal Complex ◽  
Tio2 Nanoparticles ◽  
Co2 Reduction ◽  
Rutile Tio2 ◽  
Complex Semiconductor ◽  
Hybrid Photocatalyst

Effects of Interfacial Electron Transfer in Metal Complex–Semiconductor Hybrid Photocatalysts on Z-Scheme CO2 Reduction under Visible Light

ACS Catalysis ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 9744-9754 ◽  
Author(s):  
Akinobu Nakada ◽  
Ryo Kuriki ◽  
Keita Sekizawa ◽  
Shunta Nishioka ◽  
Junie Jhon M. Vequizo ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Metal Complex ◽  
Visible Light ◽  
Co2 Reduction ◽  
Interfacial Electron Transfer ◽  
Complex Semiconductor

An NADH-Inspired Redox Mediator Strategy to Promote Second-Sphere Electron and Proton Transfer for Cooperative Electrochemical CO2 Reduction Catalyzed by Iron Porphyrin

2020 ◽  
Author(s):  
Peter T. Smith ◽  
Sophia Weng ◽  
Christopher Chang
Keyword(s):  
Proton Transfer ◽  
Co2 Reduction ◽  
Iron Porphyrin ◽  
Redox Mediators ◽  
Reservoir Properties ◽  
Proton Reduction ◽  
Electrochemical Co2 Reduction ◽  
Starting Point ◽  
Rate Improvement ◽  
Molecular Catalysts

We present a bioinspired strategy for enhancing electrochemical carbon dioxide reduction catalysis by cooperative use of base-metal molecular catalysts with intermolecular second-sphere redox mediators that facilitate both electron and proton transfer. Functional synthetic mimics of the biological redox cofactor NADH, which are electrochemically stable and are capable of mediating both electron and proton transfer, can enhance the activity of an iron porphyrin catalyst for electrochemical reduction of CO<sub>2</sub> to CO, achieving a 13-fold rate improvement without altering the intrinsic high selectivity of this catalyst platform for CO<sub>2</sub> versus proton reduction. Evaluation of a systematic series of NADH analogs and redox-inactive control additives with varying proton and electron reservoir properties reveals that both electron and proton transfer contribute to the observed catalytic enhancements. This work establishes that second-sphere dual control of electron and proton inventories is a viable design strategy for developing more effective electrocatalysts for CO<sub>2</sub> reduction, providing a starting point for broader applications of this approach to other multi-electron, multi-proton transformations.

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