Nickel doping as an effective strategy to promote separation of photogenerated charge carriers for efficient solar-fuels production

2021 ◽  
Author(s):  
Jin Wang ◽  
Yimin Xuan ◽  
Kai Zhang
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Low Cost ◽  
Solar Fuels ◽  
Charge Carriers ◽  
Effective Strategy ◽  
Nickel Doping

Enhancing the utilization of visible light and promoting the separation of photogenerated charge carriers are critical to improve the performance of semiconductor photocatalysts. Herein, nickel, a low cost transition metal...

scholarly journals Synthesis, Characterization, and Photocatalytic Activity of g-C3N4/GaN-ZnO Composite

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Nguyen Ha Trang ◽  
Tran Thi Viet Ha ◽  
Nguyen Minh Viet ◽  
Nguyen Minh Phuong
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Recombination Rate ◽  
Active Sites ◽  
High Stability ◽  
Low Cost ◽  
Charge Carriers ◽  
Strong Reduction ◽  
Ft Ir ◽  
Antibiotic Residue

Recently, photocatalysis process has shown great potential as a low-cost, environmentally friendly, and sustainable method for the water/wastewater treatment. Among that, g-C3N4 is one of the most promising photocatalyst and widely used for a variety of applications. In spite of some unique features such as strong reduction ability, active under visible light, nontoxic, and high stability, g-C3N4 photocatalytic capability under visible light is limited due to fast recombination rate of reactive charges. To deal with this issue, in this study, g-C3N4 is combined with GaN-ZnO for reducing the recombination rate of charge carriers and increasing the active sites. The g-C3N4/GaN-ZnO composite was characterized by several methods such as SEM, EDX, XRD, FT-IR, UV-Vis, and BET. It is also observed that the composite with outstanding features can work effectively under visible light; thus, it is likely to be widely applied in environment treatment, especially in antibiotic residue with more than 90% of tetracycline was decomposed after 3 hours.

scholarly journals Visible light promoted photocatalytic water oxidation: effect of metal oxide catalyst composition and light intensity

2015 ◽  
Vol 5 (10) ◽  
pp. 4760-4764 ◽  
Author(s):  
Dominic Walsh ◽  
Noelia M. Sanchez-Ballester ◽  
Valeska P. Ting ◽  
Simon R. Hall ◽  
Lui R. Terry ◽  
...  
Keyword(s):  
Transition Metal ◽  
Light Intensity ◽  
Visible Light ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Water Oxidation ◽  
Oxide Catalyst ◽  
Low Cost ◽  
Catalyst Composition ◽  
Oxidation Effect

Simply prepared low-cost nanoparticulate transition metal oxides were used as catalysts in visible light promoted water oxidations. The activity using daylight equivalent light intensities was assessed.

Regioselective C3-H Trifluoromethylation of 2H-Indazole Under Transition-Metal-Free Photoredox Catalysis

2019 ◽  
Author(s):  
Arumugavel Murugan ◽  
Venkata Nagarjuna Babu ◽  
Nagaraj Sabarinathan ◽  
Sharada Duddu. S
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Practical Approach ◽  
Hypervalent Iodine ◽  
Radical Mechanism ◽  
Photoredox Catalysis ◽  
Metal Free

Here we report a visible-light-promoted metal-free regioselective C3-H trifluoromehtylation reaction that proceeds via radical mechanism and which supported by control experiments. The combination of photoredox catalysis and hypervalent iodine reagent provides a practical approach for the present trifluoromethylation reaction and synthesis of a library of trifluoromethylated indazoles.

Highly chemoselective deoxygenation of N-heterocyclic N-oxides under transition metal-free conditions

2021 ◽  
Vol 19 (16) ◽  
pp. 3735-3742
Author(s):  
Se Hyun Kim ◽  
Ju Hyeon An ◽  
Jun Hee Lee
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Eosin Y ◽  
Metal Free ◽  
Simple Protocol

Here, we provide an operationally simple protocol for the highly chemoselective deoxygenation of various functionalized N-heterocyclic N-oxides under visible light-mediated photoredox conditions with Na2-eosin Y as an organophotocatalyst.

Solution Processed Sb2S3-based Photocathode with Enhanced Photocatalytic Performance via Constructing Ultrathin TiO2 Overlayer and Noble Metal Modification

2021 ◽  
Author(s):  
Yanwen Wang ◽  
Rong Liang ◽  
Chao Qin ◽  
Lei Ren ◽  
Zhizhen Ye ◽  
...  
Keyword(s):  
Visible Light ◽  
Noble Metal ◽  
Photocatalytic Performance ◽  
Low Cost ◽  
Light Response ◽  
Solution Processed ◽  
Antimony Sulfide ◽  
Visible Light Response ◽  
Absorbing Material

Antimony sulfide (Sb2S3) is a light absorbing material with strong visible light response, which is suitable for efficient and low-cost photoelectrodes. Nano-structured films have unique advantages in constructing photoelectrodes due...

P-doped CdS integrated with multiphasic MoSe2 nanosheets accomplishing prominent photocatalytic activity for hydrogen evolution

2021 ◽  
Author(s):  
Xuanxuan Yang ◽  
Hong Yang ◽  
Tiantian Zhang ◽  
Yongbing Lou ◽  
Jinxi Chen
Keyword(s):  
Photocatalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Low Cost ◽  
Cds Nanorods

Rational modulation of low-cost and versatile Cd-based photocatalysts coupled with transition metal diselenides is favorable to reinforcing the performance of hydrogen evolution. Herein, the P-doped CdS nanorods (denoted as PCS)...

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