scholarly journals Hypercrosslinked Polymers as a Photocatalytic Platform for Visible-Light-Driven CO2 Photoreduction Using H2O

2020 ◽  
Author(s):  
Giulia M. Schukraft ◽  
Robert Woodward ◽  
Santosh Kumar ◽  
Michael Sachs ◽  
Salvador Eslava ◽  
...  
Keyword(s):  
Visible Light ◽  
High Performance ◽  
Selective Reduction ◽  
Production Costs ◽  
Fuel Production ◽  
Co Catalyst ◽  
Conversion Rates ◽  
Visible Light Driven ◽  
Pi Conjugation ◽  
Hypercrosslinked Polymers

The design of robust, high-performance photocatalysts is key for the success of solar fuel production <i>via</i> CO<sub>2</sub>conversion. Herein, we present hypercrosslinked polymer (HCP) photocatalysts for the selective reduction of CO<sub>2</sub> to CO, combining excellent CO<sub>2</sub> sorption capacities, good general stabilities, and low production costs. HCPs are active photocatalysts in the visible light range, significantly out-performing the benchmark material, TiO<sub>2</sub> P25, using only sacrificial H<sub>2</sub>O. We hypothesise that superior H<sub>2</sub>O adsorption capacities led to concentration at photoactive sites, improving photocatalytic conversion rates when compared to sacrificial H<sub>2</sub>. These polymers are an intriguing set of organic photocatalysts, displaying no long-range order or extended pi-conjugation. The as-synthesised networks are the sole photocatalytic component, requiring no co-catalyst doping or photosensitiser, representing a highly versatile and exciting platform for solar-energy conversion.

scholarly journals Hypercrosslinked Polymers as a Photocatalytic Platform for Visible-Light-Driven CO2 Photoreduction Using H2O

2020 ◽  
Author(s):  
Giulia M. Schukraft ◽  
Robert Woodward ◽  
Santosh Kumar ◽  
Michael Sachs ◽  
Salvador Eslava ◽  
...  
Keyword(s):  
Visible Light ◽  
High Performance ◽  
Selective Reduction ◽  
Production Costs ◽  
Fuel Production ◽  
Co Catalyst ◽  
Conversion Rates ◽  
Visible Light Driven ◽  
Pi Conjugation ◽  
Hypercrosslinked Polymers

The design of robust, high-performance photocatalysts is key for the success of solar fuel production <i>via</i> CO<sub>2</sub>conversion. Herein, we present hypercrosslinked polymer (HCP) photocatalysts for the selective reduction of CO<sub>2</sub> to CO, combining excellent CO<sub>2</sub> sorption capacities, good general stabilities, and low production costs. HCPs are active photocatalysts in the visible light range, significantly out-performing the benchmark material, TiO<sub>2</sub> P25, using only sacrificial H<sub>2</sub>O. We hypothesise that superior H<sub>2</sub>O adsorption capacities led to concentration at photoactive sites, improving photocatalytic conversion rates when compared to sacrificial H<sub>2</sub>. These polymers are an intriguing set of organic photocatalysts, displaying no long-range order or extended pi-conjugation. The as-synthesised networks are the sole photocatalytic component, requiring no co-catalyst doping or photosensitiser, representing a highly versatile and exciting platform for solar-energy conversion.

In situ synthesis of hierarchical nitrogen-doped MoS2 microsphere with an excellent visible light-driven photocatalytic nitrogen fixation ability

2020 ◽  
Vol 13 (05) ◽  
pp. 2051031
Author(s):  
Abulikemu Abulizi ◽  
Hujiabudula Maimaitizi ◽  
Dilinuer Talifu ◽  
Yalkunjan Tursun
Keyword(s):  
Visible Light ◽  
High Performance ◽  
Nucleation Site ◽  
Active Species ◽  
Nitrogen Doped ◽  
Photogenerated Electrons ◽  
The Hierarchical Structure ◽  
Visible Light Driven

A photocatalyst of high-performance hierarchical nitrogen-doped MoS2 (N-MoS2) microsphere was fabricated by an in situ hydrothermal method in the presence of cetyltrimethylammonium bromide (CTAB). The as-prepared N-MoS2 microsphere was self-assembled by extremely thin interleaving petals, where CTAB acts as a nucleation site for the formation of the interleaving petals due to the strong interaction between CTA+ and [Formula: see text]. N-MoS2 showed higher N2 fixation ability (101.2 [Formula: see text] mol/g(cat)h) than the non-doped MoS2 under the visible light irradiation, and the improved photocatalytic activity could be ascribed to that the doped N narrows the band gap, and the surface reflecting and scattering effect caused by the hierarchical structure enhance the light adsorption. The trapping experiment of active species was also investigated to evaluate the role of photogenerated electrons in the photocatalytic reaction process. Meanwhile, the possible mechanism for the formation and excellent photocatalytic performance of N-MoS2 microsphere were also presented.

LaCoO3 co-catalyst modified Ag2CrO4 for improved visible-light-driven photocatalytic degradation of tetracycline

2019 ◽  
Vol 227 ◽  
pp. 115691 ◽  
Author(s):  
Shuyang Yao ◽  
Jiaming Wu ◽  
Wen Li ◽  
Ruifen Zheng ◽  
Rong Li ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Co Catalyst ◽  
Visible Light Driven

High-performance NiO/g-C3N4 composites for visible-light-driven photocatalytic overall water splitting

2018 ◽  
Vol 5 (7) ◽  
pp. 1646-1652 ◽  
Author(s):  
Yijun Fu ◽  
Chang'an Liu ◽  
Cheng Zhu ◽  
Huibo Wang ◽  
Yujiang Dou ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
High Performance ◽  
Overall Water Splitting ◽  
Visible Light Driven ◽  
Sacrificial Agent

NiO/g-C3N4 as a photocatalyst achieves efficient visible-light-driven overall water splitting without a sacrificial agent.

scholarly journals A Mn13-cluster based coordination polymer as a co-catalyst of CdS for enhanced visible-light driven H2 evolution

2018 ◽  
Vol 47 (32) ◽  
pp. 10857-10860 ◽  
Author(s):  
Tian Wen ◽  
Lei Zhang ◽  
Wolfgang Schmitt
Keyword(s):  
Coordination Polymer ◽  
Visible Light ◽  
Noble Metal ◽  
H2 Evolution ◽  
Co Catalyst ◽  
Metal Free ◽  
Production Activity ◽  
Visible Light Driven ◽  
Mn Cluster

A Mn cluster-based polymer has been applied as a noble-metal-free co-catalyst of CdS, showing enhanced photocatalytic H2-production activity under visible light.

Boosting photocatalytic H2 evolution on g-C3N4 by modifying covalent organic frameworks (COFs)

2019 ◽  
Vol 55 (41) ◽  
pp. 5829-5832 ◽  
Author(s):  
Maolan Luo ◽  
Qing Yang ◽  
Kewei Liu ◽  
Hongmei Cao ◽  
Hongjian Yan
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Quantum Efficiency ◽  
Covalent Organic Frameworks ◽  
H2 Evolution ◽  
Co Catalyst ◽  
Visible Light Driven ◽  
Apparent Quantum Efficiency ◽  
Sacrificial Agent ◽  
Photocatalytic H2 Evolution

Modifying g-C3N4 with covalent organic frameworks (COFs) through imine linkage results in a dramatically enhanced visible-light-driven photocatalytic hydrogen evolution, which reached 10.1 mmol g−1 h−1 when 2 wt% Pt and triethanolamine were used as co-catalyst and sacrificial agent, respectively, corresponding to an apparent quantum efficiency (AQE) of 20.7% at 425 nm.

Sign in / Sign up

Export Citation Format

Share Document