Preparation of Zn3 In2 S6 /TiO2 for Enhanced CO2 Photocatalytic Reduction Activity Via Z-scheme Electron Transfer

ChemCatChem ◽  
2018 ◽  
Vol 11 (2) ◽  
pp. 753-759 ◽  
Author(s):  
Houde She ◽  
Yan Wang ◽  
Hua Zhou ◽  
Yuan Li ◽  
Lei Wang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Reduction ◽  
Reduction Activity

Direct Z-scheme Sn-In2O3/In2S3 heterojunction nanostructures for enhanced photocatalytic CO2 reduction activity

2021 ◽  
Author(s):  
Yinyi Ma ◽  
Zemin Zhang ◽  
Xiao Jiang ◽  
Rongke Sun ◽  
Mingzheng Xie ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Environmental Pollution ◽  
Light Absorption ◽  
Co2 Reduction ◽  
Photocatalytic Reduction ◽  
Practical Significance ◽  
Energy Crisis ◽  
Low Light ◽  
Reduction Activity

Photocatalytic reduction of carbon dioxide into chemical fuels has great practical significance in solving energy crisis and environmental pollution, but remains a big challenge owing to its low light absorption...

Enhanced photocatalytic reduction activity of uranium(vi) from aqueous solution using the Fe2O3–graphene oxide nanocomposite

2017 ◽  
Vol 46 (43) ◽  
pp. 14762-14770 ◽  
Author(s):  
Yadan Guo ◽  
Yiqin Guo ◽  
Xuegang Wang ◽  
Peng Li ◽  
Liuwei Kong ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Nuclear Industry ◽  
Photocatalytic Reduction ◽  
Potential Solution ◽  
Hexavalent Uranium ◽  
Reduction Activity ◽  
Radioactive Wastewater

Photocatalytic technologies are a potential solution for remediation of radioactive wastewater, including the reduction of radioactive hexavalent uranium, which is commonly found in wastewater from the nuclear industry.

New insights into the relationship between photocatalytic activity and TiO2–GR composites

RSC Advances ◽  
2015 ◽  
Vol 5 (37) ◽  
pp. 29201-29208 ◽  
Author(s):  
Yanyan Zhu ◽  
Yajun Wang ◽  
Wenqing Yao ◽  
Ruilong Zong ◽  
Yongfa Zhu
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Oxidation ◽  
Photocatalytic Reduction ◽  
Photoelectrochemical Properties ◽  
Oxidation Activity ◽  
Reduction Activity ◽  
The Relationship

Composited graphene cannot enhance the photocatalytic oxidation activity of TiO2, but can improve its photocatalytic reduction activity and photoelectrochemical properties.

scholarly journals Architecture of the mycobacterial succinate dehydrogenase with a membrane-embedded Rieske FeS cluster

2021 ◽  
Vol 118 (15) ◽  
pp. e2022308118
Author(s):  
Xiaoting Zhou ◽  
Yan Gao ◽  
Weiwei Wang ◽  
Xiaolin Yang ◽  
Xiuna Yang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Succinate Dehydrogenase ◽  
Krebs Cycle ◽  
Water Soluble ◽  
Electron Transfer Mechanism ◽  
Complex Ii ◽  
Electron Transfer Pathway ◽  
Quinone Binding ◽  
Reduction Activity ◽  
Quinone Reduction

Complex II, also known as succinate dehydrogenase (SQR) or fumarate reductase (QFR), is an enzyme involved in both the Krebs cycle and oxidative phosphorylation. Mycobacterial Sdh1 has recently been identified as a new class of respiratory complex II (type F) but with an unknown electron transfer mechanism. Here, using cryoelectron microscopy, we have determined the structure of Mycobacterium smegmatis Sdh1 in the presence and absence of the substrate, ubiquinone-1, at 2.53-Å and 2.88-Å resolution, respectively. Sdh1 comprises three subunits, two that are water soluble, SdhA and SdhB, and one that is membrane spanning, SdhC. Within these subunits we identified a quinone-binding site and a rarely observed Rieske-type [2Fe-2S] cluster, the latter being embedded in the transmembrane region. A mutant, where two His ligands of the Rieske-type [2Fe-2S] were changed to alanine, abolished the quinone reduction activity of the Sdh1. Our structures allow the proposal of an electron transfer pathway that connects the substrate-binding and quinone-binding sites. Given the unique features of Sdh1 and its essential role in Mycobacteria, these structures will facilitate antituberculosis drug discovery efforts that specifically target this complex.

Carbon Nitride Nanosheet and Myoglobin Modified Electrode for Electrochemical Sensing Investigations

2020 ◽  
Vol 16 (6) ◽  
pp. 703-710
Author(s):  
Ying Deng ◽  
Zuorui Wen ◽  
Guiling Luo ◽  
Hui Xie ◽  
Juan Liu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Modified Electrode ◽  
Trichloroacetic Acid ◽  
Carbon Nitride ◽  
Electrochemical Sensing ◽  
Electrocatalytic Reduction ◽  
Buffer Solution ◽  
Reduction Activity ◽  
Electrochemical Biosensing ◽  
Optimum Ph

Background: Carbon-based nanomaterials, especially carbon nitride (C3N4) has attracted tremendous interest in biosensor applications. Meanwhile, the mechanism of redox protein sensing and related electrocatalytic reactions can provide a valid basis for understanding the process of biological redox reaction. Objective: The aim of this paper is to construct a new electrochemical enzyme sensor to achieve direct electron transfer of myoglobin (Mb) on CILE surface and display electrocatalytic reduction activity to catalyze trichloroacetic acid (TCA) and H2O2. Methods: The working electrode was fabricated based on ionic liquid modified Carbon Paste Electrode (CILE) and C3N4 nanosheets were modified on the CILE surface, then Mb solution was fixed on C3N4/CILE surface and immobilized by using Nafion film. The as-prepared biosensor displayed satisfactory electrocatalytic ability towards the reduction of TCA and H2O2 in an optimum pH 7.0 buffer solution. Results: The results indicated that C3N4 modified electrode retained the activity of the enzyme and displayed quasi-reversible redox behavior in an optimum pH 7.0 buffer solution. The electrochemical parameters of the immobilized Mb on the electrode surface were further calculated with the results of the electron transfer number (n) as 1.27, the charge transfer coefficient (α) as 0.53 and the electrontransfer rate constant (ks) as 3.32 s-1, respectively. The Nafion/Mb/C3N4/CILE displayed outstanding electrocatalytic reduction activity to catalyze trichloroacetic acid and H2O2. Conclusion: The Nafion/Mb/C3N4/CILE displayed outstanding electrocatalytic reduction, which demonstrated the promising applications of C3N4 nanosheet in the field electrochemical biosensing.

Bismuth Oxybromide with Reasonable Photocatalytic Reduction Activity under Visible Light

ACS Catalysis ◽  
2014 ◽  
Vol 4 (3) ◽  
pp. 954-961 ◽  
Author(s):  
Jun Shang ◽  
Weichang Hao ◽  
Xiaojun Lv ◽  
Tianmin Wang ◽  
Xiaolin Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Reduction ◽  
Reduction Activity

scholarly journals Highly Efficient Red Cabbage Anthocyanin Inserted TiO2 Aerogel Nanocomposites for Photocatalytic Reduction of Cr(VI) under Visible Light

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 937 ◽  
Author(s):  
Haiyan Yang ◽  
Liang Jiang ◽  
Yizhou Li ◽  
Guoqing Li ◽  
Yepeng Yang ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Pure Tio2 ◽  
Photocatalytic Reduction ◽  
Good Stability ◽  
Structure Directing Agent ◽  
Red Cabbage ◽  
Organic Pigments ◽  
Reduction Activity ◽  
Meaningful Activity

In sharp contrast to conventional photosensitization methods in which the organic pigments were often adsorbed, herein we present a study on natural vegetable pigment inserted TiO2 aerogel nanocomposites and we directly use red cabbage anthocyanin (RCP) as a structure-directing agent. It was found that pure TiO2 aerogel nanocomposite did not exhibit any meaningful activity for photocatalytic reduction of Cr(VI). However, the photocatalytic reduction activity was greatly improved by the RCP inserted TiO2 aerogel nanocomposites under visible-light irradiation, which was approximately 2- and 12.3-fold higher than that of TiO2 aerogel conventionally photosensitized by RCP and pure TiO2 aerogel nanocomposites, respectively. It also exhibited good stability and could be reused at least three times without losing a significant amount of its activity.

Enhanced photocatalytic reduction activity of BiOCl nanosheets loaded on β-Bi2O3

2019 ◽  
Vol 30 (19) ◽  
pp. 17956-17962
Author(s):  
Jun Shang ◽  
Huige Chen ◽  
Bing Zhao ◽  
Fei Zhou ◽  
Hao Zhang ◽  
...  
Keyword(s):  
Photocatalytic Reduction ◽  
Reduction Activity
Sign in / Sign up

Export Citation Format

Share Document