The structure–activity correlation of bifunctional MnO2 polymorphoric and MoS2-based heterostructures: a highly efficient, robust electrochemical water oxidation and reduction reaction catalyst in alkaline pH

2021 ◽  
Vol 5 (4) ◽  
pp. 1148-1157
Author(s):  
Saikat Bolar ◽  
Subhasis Shit ◽  
Prakas Samanta ◽  
Naresh Chandra Murmu ◽  
Tapas Kuila
Keyword(s):  
Water Splitting ◽  
Oxidation State ◽  
Water Oxidation ◽  
Reduction Reaction ◽  
Alkaline Ph ◽  
Highly Efficient ◽  
Average Oxidation State ◽  
Structure Activity ◽  
Splitting Process

Phase controlled heterostructure derived from polymorphic MnO2 and MoS2 emerged as an advanced electrocatalyst. The decreased average oxidation state and layered interaction within the heterostructure significantly monitored water splitting process.

Visible light-driven novel g-C3N4/NiFe-LDH composite photocatalyst with enhanced photocatalytic activity towards water oxidation and reduction reaction

2015 ◽  
Vol 3 (36) ◽  
pp. 18622-18635 ◽  
Author(s):  
Susanginee Nayak ◽  
Lagnamayee Mohapatra ◽  
Kulamani Parida
Keyword(s):  
Photocatalytic Activity ◽  
Composite Materials ◽  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Water Oxidation ◽  
Reduction Reaction ◽  
Light Irradiation ◽  
Composite Photocatalyst ◽  
Visible Light Driven

Dispersion of exfoliated CN over the surface of exfoliated LDH composite materials, and its photocatalytic water splitting under visible-light irradiation.

scholarly journals Effect of alkaline pH on photosynthetic water oxidation and the association of extrinsic proteins with Photosystem Two

1989 ◽  
Vol 258 (2) ◽  
pp. 357-362 ◽  
Author(s):  
D J Chapman ◽  
J De Felice ◽  
K Davis ◽  
J Barber
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Binding Sites ◽  
Partial Recovery ◽  
Alkaline Ph ◽  
Ph Values ◽  
Extrinsic Proteins ◽  
Reversible Phase ◽  
Photosynthetic Water Oxidation ◽  
Optimal Ph

Incubation of a membrane preparation enriched in Photosystem Two (PSII) at alkaline pH inhibited the water-splitting reactions in two distinct steps. Up to pH 8.5 the inhibition was reversible, whereas at higher alkalinities it was irreversible. It was shown that the reversible phase correlated with loss and rebinding of the 23 kDa extrinsic polypeptide. However, after mild alkaline treatments a partial recovery was possible without the binding of the 23 kDa polypeptide when the assay was at the optimal pH of 6.5 and in a medium containing excess Cl-. The irreversible phase was found to be closely linked with the removal of the 33 kDa extrinsic protein of PSII. Treatments with pH values above 8.5 not only caused the 33 kDa protein to be displaced from the PSII-enriched membranes, but also resulted in an irreversible modification of the binding sites such that the extrinsic 33 kDa protein could not reassociate with PSII when the pH was lowered to 6.5. The results obtained with these more extreme alkaline pH treatments support the notion that the 23 kDa protein cannot bind to PSII unless the 33 kDa protein is already bound. The differential effect of pH on the removal of the 23 kDa and 33 kDa proteins contrasted with the data of Kuwabara & Murata [(1983) Plant Cell Physiol. 24, 741-747], but this discrepancy was accounted for by the use of glycerol in the incubation media.

TiO2/graphene/NiFe-layered double hydroxide nanorod array photoanodes for efficient photoelectrochemical water splitting

2016 ◽  
Vol 9 (8) ◽  
pp. 2633-2643 ◽  
Author(s):  
Fanyu Ning ◽  
Mingfei Shao ◽  
Simin Xu ◽  
Yi Fu ◽  
Ruikang Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Water Oxidation ◽  
Charge Separation ◽  
Nanorod Array ◽  
Photoelectrochemical Water Splitting ◽  
Nanorod Arrays ◽  
Highly Efficient ◽  
Oxidation Efficiency ◽  
Double Hydroxide

TiO2/graphene/NiFe-layered double hydroxide nanorod arrays were fabricated as highly efficient photoanodes for photoelectrochemical water splitting with simultaneously enhanced charge separation and water oxidation efficiency.

Ultrathin NiCo2O4 nanosheets with dual-metal active sites for enhanced solar water splitting of a BiVO4 photoanode

2019 ◽  
Vol 7 (39) ◽  
pp. 22274-22278 ◽  
Author(s):  
Chenchen Feng ◽  
Qi Zhou ◽  
Bin Zheng ◽  
Xiang Cheng ◽  
Yajun Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Active Sites ◽  
Oxygen Vacancies ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Highly Efficient ◽  
Dual Metal ◽  
Nico2o4 Nanosheets ◽  
First Time

Spinel-structured NiCo2O4 nanosheets with dual-metal active sites, an ultrathin structure, and abundant oxygen vacancies were decorated for the first time on a BiVO4 photoanode for highly efficient PEC water oxidation.

Water Splitting: Fe2 O3 -TiO2 Nano-heterostructure Photoanodes for Highly Efficient Solar Water Oxidation (Adv. Mater. Interfaces 17/2015)

2015 ◽  
Vol 2 (17) ◽  
Author(s):  
Davide Barreca ◽  
Giorgio Carraro ◽  
Alberto Gasparotto ◽  
Chiara Maccato ◽  
Michael E. A. Warwick ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Solar Water ◽  
Highly Efficient ◽  
Solar Water Oxidation

Pivotal role of the redox-active tyrosine in driving the water splitting catalyzed by photosystem II

2020 ◽  
Vol 22 (1) ◽  
pp. 273-285 ◽  
Author(s):  
Shin Nakamura ◽  
Matteo Capone ◽  
Daniele Narzi ◽  
Leonardo Guidoni
Keyword(s):  
Hydrogen Bond ◽  
Photosystem Ii ◽  
Water Splitting ◽  
Oxidation State ◽  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Pivotal Role ◽  
Redox Active ◽  
Water Oxidation Catalysis

TyrZ oxidation state triggers hydrogen bond modification in the water oxidation catalysis.

scholarly journals Remarkable synergy of borate and interfacial hole transporter on BiVO4 photoanodes for photoelectrochemical water oxidation

2021 ◽  
Author(s):  
Qijun Meng ◽  
Biaobiao Zhang ◽  
Hao Yang ◽  
Chang Liu ◽  
Yingzheng Li ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Artificial Photosynthesis ◽  
Building Blocks ◽  
Bismuth Vanadate ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Highly Efficient ◽  
Photoelectrochemical Water Oxidation

Bismuth vanadate (BiVO4) is one of the most fascinating building blocks for the design and assembly of highly efficient artificial photosynthesis devices for solar water splitting. Our recent report has...

Boost quantum efficiency of BiVO4 photoanode by increasing oxygen vacancies for highly-efficient solar water oxidation

2021 ◽  
Author(s):  
Bin Li ◽  
Qi Qin ◽  
Chuanyong Jian ◽  
Qian Cai ◽  
Wei Liu
Keyword(s):  
Charge Transport ◽  
Water Splitting ◽  
Quantum Efficiency ◽  
Water Oxidation ◽  
Oxygen Vacancies ◽  
Diffusion Length ◽  
Solar Water ◽  
Highly Efficient ◽  
Solar Water Oxidation ◽  
Pec Water Splitting

BiVO4 (BVO) is a promising photoanode material for photoelectrochemical (PEC) water splitting. However, it is severely restricted by its short charge diffusion length and poor charge transport. Introducing oxygen vacancies...

scholarly journals Decoration of the layered manganese oxide birnessite with Mn(ii/iii) gives a new water oxidation catalyst with fifty-fold turnover number enhancement

2015 ◽  
Vol 44 (29) ◽  
pp. 12981-12984 ◽  
Author(s):  
Ian G. McKendry ◽  
Sandeep K. Kondaveeti ◽  
Samantha L. Shumlas ◽  
Daniel R. Strongin ◽  
Michael J. Zdilla
Keyword(s):  
Manganese Oxide ◽  
Oxidation State ◽  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Oxidation Catalyst ◽  
Turnover Number ◽  
Average Oxidation State ◽  
Water Oxidation Catalysis ◽  
Layered Manganese Oxide

The role of the manganese average oxidation state (AOS) in water oxidation catalysis by birnessite was investigated.

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