scholarly journals Efficient visible-light-driven hydrogen production by Zn-porphyrin based photocatalyst with engineered active donor-acceptor sites

2021 ◽  
Author(s):  
Nageshwarrao Chanda ◽  
Koteshwar Devulapally ◽  
Spandana Gonuguntla ◽  
Sreedhar Bojja ◽  
Ujjwal Pal ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Tio2 Photocatalyst ◽  
Zinc Porphyrin ◽  
Visible Light Driven ◽  
Donor Acceptor ◽  
Active Donor

Here, we report the fine-tuned Donor-π-Acceptor concept based Zinc-porphyrin sensitized TiO2 photocatalyst for photochemical hydrogen evolution application. The newly designed system showed unprecedented photocatalytic activity. The molecular structure comprises of...

Facile preparation and highly efficient photocatalytic hydrogen evolution of novel CuxNiy nanoalloy/graphene nanohybrids

2017 ◽  
Vol 1 (3) ◽  
pp. 548-554 ◽  
Author(s):  
Xiangqing Li ◽  
Honglei Xu ◽  
Qiang Luo ◽  
Shizhao Kang ◽  
Lixia Qin ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Noble Metal ◽  
Photocatalytic Hydrogen Evolution ◽  
Metal Free ◽  
Free Graphene ◽  
Visible Light Driven ◽  
Facile Preparation

The noble metal-free CuxNiy bimetallic nanoalloy decorated graphene nanohybrids (CuxNiy/G) exhibited a higher photocatalytic activity for hydrogen production. It provides a new and cheaper noble-metal-free graphene-based photocatalyst system for visible light-driven photocatalytic hydrogen evolution.

scholarly journals Pyridyl-Anchored Type BODIPY Sensitizer-TiO2 Photocatalyst for Enhanced Visible Light-Driven Photocatalytic Hydrogen Production

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 535
Author(s):  
Xiao-Feng Shen ◽  
Motonori Watanabe ◽  
Atsushi Takagaki ◽  
Jun Tae Song ◽  
Tatsumi Ishihara
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Catalytic Performance ◽  
Tio2 Photocatalyst ◽  
Pyridyl Group ◽  
Photocatalytic Hydrogen Production ◽  
Dye Sensitized ◽  
Visible Light Driven ◽  
Carbazole Group

Dye-sensitized photocatalytic hydrogen production using a boron-dipyrromethene (BODIPY) organic material having a pyridyl group at the anchor site was investigated. Phenyl, carbazole, and phenothiazine derivatives were introduced into BODIPY dyes, and their photocatalytic activities were examined. Identification was performed by nuclear magnetic resonance (NMR), infrared (IR), mass (MS) spectra, and absorption spectra, and catalyst evaluation was performed by using visible-light irradiation and photocatalytic hydrogen production and photocurrent. These dyes have strong absorption at 600–700 nm, suggesting that they are promising as photosensitizers. When the photocatalytic activity was examined, stable catalytic performance was demonstrated, and the activity of the Pt-TiO2 photocatalyst carrying a dye having a carbazole group was 249 μmol/gcat·h. Photocurrent measurements suggest that dye-sensitized photocatalytic activity is occurring. This result suggests that BODIPY organic materials with pyridyl groups as anchor sites are useful as novel dye-sensitized photocatalysts.

Colocalization of Light Harvesting and Catalytic Units in ‘Soft’ Coordination Polymer Hydrogel toward Visible-Light Driven Photocatalytic Hydrogen Production

2021 ◽  
Author(s):  
Parul Verma ◽  
Ashish Singh ◽  
Faruk Ahamed Rahimi ◽  
Tapas Kumar Maji
Keyword(s):  
Hydrogen Production ◽  
Coordination Polymer ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Light Harvesting ◽  
Sustainable Energy ◽  
Supramolecular Assembly ◽  
Polymer Hydrogel ◽  
Visible Light Driven ◽  
Molecular Components

Colocalization of essential molecular components in the solvated soft supramolecular assembly towards realizing visible-light-driven hydrogen evolution would be an exciting approach for sustainable energy by generating clean solar fuel. In...

Controlling the visible-light driven photocatalytic activity of alloyed ZnSe–AgInSe2 quantum dots for hydrogen production

2020 ◽  
Vol 8 (26) ◽  
pp. 13142-13149 ◽  
Author(s):  
Ping-Yen Hsieh ◽  
Tatsuya Kameyama ◽  
Takayuki Takiyama ◽  
Ko Masuoka ◽  
Takahisa Yamamoto ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Quantum Yield ◽  
Hydrogen Production ◽  
Visible Light ◽  
Apparent Quantum Yield ◽  
Visible Light Driven

Alloyed ZnSe–AgInSe2 quantum dots were used as a photocatalyst for H2 production, showing an apparent quantum yield of 3.4% at 600 nm.

The effect of molecular structure and fluorination on the properties of pyrene-benzothiadiazole-based conjugated polymers for visible-light-driven hydrogen evolution

2018 ◽  
Vol 9 (35) ◽  
pp. 4468-4475 ◽  
Author(s):  
Chang Cheng ◽  
Xunchang Wang ◽  
Yaoyao Lin ◽  
Luying He ◽  
Jia-Xing Jiang ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Visible Light ◽  
Conjugated Polymers ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Evolution Rate ◽  
Fluorinated Polymer ◽  
Hydrogen Evolution Rate ◽  
Visible Light Driven

The linear non-fluorinated polymer L-PyBT exhibited an impressive hydrogen evolution rate up to 83.7 μmol h−1 under visible light irradiation.

Triphenylamine and terpyridine–zinc(ii) complex based donor–acceptor soft hybrid as a visible light-driven hydrogen evolution photocatalyst

2020 ◽  
Vol 8 (42) ◽  
pp. 21968-21972
Author(s):  
Debabrata Samanta ◽  
Manish Kumar ◽  
Sugandha Singh ◽  
Parul Verma ◽  
Kamal K. Kar ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Self Assembly ◽  
Visible Light Driven ◽  
Donor Acceptor

A donor–acceptor coordination polymer (TPA-Zn) was synthesized by Zn(ii)-assisted self-assembly of an in situ generated triphenylamine (TPA) cored tristerpyridine ligand.

Hyperbranched Conjugated Polymer Dots: The Enhanced Photocatalytic Activity for Visible Light-Driven Hydrogen Production

2019 ◽  
Vol 52 (11) ◽  
pp. 4376-4384 ◽  
Author(s):  
Peng Zhao ◽  
Lijie Wang ◽  
Yusen Wu ◽  
Tao Yang ◽  
Yun Ding ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Conjugated Polymer ◽  
Polymer Dots ◽  
Visible Light Driven
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