scholarly journals An Efficient Photoelectrochemical Hydrogen Evolution System using Silicon Nanomaterials with Ultra-High Aspect Ratios

2014 ◽  
Vol 2 (11) ◽  
pp. 889-896 ◽  
Author(s):  
Duck Hyun Lee ◽  
Sai P. R. Kobaku ◽  
Young-Rae Hong ◽  
Jae Young Kwon
Keyword(s):  
Hydrogen Evolution ◽  
Evolution System ◽  
Aspect Ratios

scholarly journals Photoinduced Hydrogen-Evolution System with an Antibody–Porphyrin Complex as a Photosensitizer

2009 ◽  
Vol 82 (11) ◽  
pp. 1341-1346 ◽  
Author(s):  
Hiroyasu Yamaguchi ◽  
Takeshi Onji ◽  
Hidetaka Ohara ◽  
Noriaki Ikeda ◽  
Akira Harada
Keyword(s):  
Hydrogen Evolution ◽  
Evolution System ◽  
Porphyrin Complex

scholarly journals A Photoinduced Hydrogen Evolution System Using Polymer-Supported Tin Porphyrin

2007 ◽  
Vol 63 (12) ◽  
pp. 301-306 ◽  
Author(s):  
Manami Morisaki ◽  
Kazuki Enomoto ◽  
Tomoko Ito ◽  
Isao Tabata ◽  
Kenji Hisada ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Evolution System ◽  
Tin Porphyrin ◽  
Polymer Supported

Hydrogen evolution sensitized by tin porphyrin fixed membranes

2003 ◽  
Vol 07 (03) ◽  
pp. 199-204 ◽  
Author(s):  
Sheng Wang ◽  
Isao Tabata ◽  
Kenji Hisada ◽  
Teruo Hori
Keyword(s):  
Hydrogen Evolution ◽  
Membrane System ◽  
Pvc Membrane ◽  
Evolution System ◽  
Homogeneous Type ◽  
Sem Images ◽  
Fixed Membrane ◽  
Different Types ◽  
Tin Porphyrin ◽  
Pvc Membranes

A novel, photoinduced hydrogen evolution system involving a tin porphyrin ( SnTPP ) fixed membrane was studied with two different types of PVC membranes: homogeneous and porous. It was found that the porous PVC membrane system could efficiently reduce water to evolve hydrogen compared with the homogeneous type. The results confirmed that hydrogen evolution in the SnTPP / PVC membrane system depended strongly on the surface of the membrane and the degree of aggregation of SnTPP . SEM images of the two types of SnTPP / PVC membranes also show the differences in both morphologies.

An on-demand solar hydrogen-evolution system for unassisted high-efficiency pure-water splitting

2019 ◽  
Vol 7 (29) ◽  
pp. 17315-17323 ◽  
Author(s):  
Wei Che ◽  
Hui Su ◽  
Xu Zhao ◽  
Yuanli Li ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Charge Separation ◽  
High Efficiency ◽  
Pure Water ◽  
Evolution System ◽  
Solar Hydrogen ◽  
On Demand ◽  
Surface Hydroxylation

A surface hydroxylation structure of g-C3N3.5(O0.5H0.5) photocatalyst was designed to concurrently increase the toxicity resistance and maximize the charge separation for H2 evolution.

Highly Efficient Hydrogen Evolution System of Melamine/BH3 without Using Any Catalyst

2019 ◽  
Vol 7 (8) ◽  
pp. 7987-7996
Author(s):  
Xiangdong Ji ◽  
Xiaobo Tong ◽  
Yang Liu ◽  
Wei Gao ◽  
Ying Mu
Keyword(s):  
Hydrogen Evolution ◽  
Evolution System ◽  
Highly Efficient

Photoinduced hydrogen evolution with lysine-linked viologen and hydrogenase

2002 ◽  
Vol 06 (01) ◽  
pp. 26-32 ◽  
Author(s):  
Noriyuki Asakura ◽  
Akimitsu Miyaji ◽  
Toshiaki Kamachi ◽  
Ichiro Okura
Keyword(s):  
Hydrogen Evolution ◽  
Electron Donor ◽  
Methyl Viologen ◽  
Evolution System ◽  
Electron Carrier ◽  
Effective Hydrogen

Lysine-linked viologen was prepared as a substrate for the hydrogenase. By using reduced lysine-linked viologen ( LysV +•), the hydrogenase- LysV +• complex was formed efficiently, leading to effective hydrogen evolution compared with methyl viologen. Lysine-linked viologen as an electron carrier was applied for the photoinduced hydrogen evolution system containing hydrogenase, Tetrakis(4-carboxyphenyl)porphyrin ( TCPP ) as a photosensitizer, and a sacrificial electron donor for TCPP . In this system, effective photoinduced hydrogen evolution was observed.

Light-driven hydrogen evolution system with glutamic-acid-modified zinc porphyrin as photosensitizer and [FeFe]-hydrogenase model as catalyst

2013 ◽  
Vol 85 (7) ◽  
pp. 1405-1413 ◽  
Author(s):  
Shan Yu ◽  
Feng Wang ◽  
Jing-Jing Wang ◽  
Hong-Yan Wang ◽  
Bin Chen ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Cyclic Voltammetry ◽  
Glutamic Acid ◽  
Hydrogen Evolution ◽  
Lower Energy ◽  
Intersystem Crossing ◽  
Evolution System ◽  
Time Resolved ◽  
Zinc Porphyrin ◽  
Proton Source

An intermolecular light-driven hydrogen evolution system with free glutamic-acid-modified zinc tetra(p-phenyl) porphyrin (Glu-ZnP) as a photosensitizer and [Fe2(CO)6(μ-adt)C6H5] [μ-adt = N(CH2S)2] (Badt) as a catalyst has been constructed. Using phenylmercaptan (BSH) as electron donor and acetic acid (HOAc) as proton source, hydrogen was obtained after irradiation with visible light for 2 h; the efficiency is comparable to that of the similar intramolecular dyad. Steady-state and time-resolved spectroscopy and cyclic voltammetry show that both the first and the second electron transfer from singlet 1*Glu-ZnP to Badt and reduced Badt are thermodynamically feasible. However, the competition of electron transfer from singlet 1*Glu-ZnP to Badt with intersystem crossing from singlet 1*Glu-ZnP to triplet 3*Glu-ZnP, inefficient electron transfer from triplet 3*Glu-ZnP to Badt, and the lower energy of triplet 3*Glu-ZnP and possible 3*Badt to that of yielded charge-separated state of Glu-ZnP+·-Badt−· were believed to be the obstacles for efficient hydrogen evolution.

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