Photoluminesence enhancement at high generation rate induced by exciton localization

2021 ◽  
Author(s):  
Ting Zheng ◽  
Xianghong Niu ◽  
Hui Zhao ◽  
Jinlan Wang ◽  
weiwei zhao ◽  
...  
Keyword(s):  
Generation Rate ◽  
Exciton Localization

EXCITON LOCALIZATION BY COMPOSITIONAL FLUCTUATIONS IN II-VI SEMICONDUCTOR SOLID SOLUTIONS

1985 ◽  
Vol 46 (C7) ◽  
pp. C7-173-C7-177 ◽  
Author(s):  
S. Permogorov ◽  
A. Reznitsky ◽  
S. Verbin ◽  
A. Naumov ◽  
W. von der Osten ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Exciton Localization

Correlation between Thromboplastin Sensitivity and In Vitro F1 + 2 Generation Rate

1995 ◽  
Vol 73 (03) ◽  
pp. 547-547
Author(s):  
Guglielmo Mariani ◽  
Gualtiero Palareti ◽  
Giuliana Guazzaloca ◽  
Alberto Abate ◽  
Gian Domenico Di Nucci ◽  
...  
Keyword(s):  
Generation Rate

Enhancement of hydroxyl radical generation by phenols and their reaction intermediates during ozonation

1998 ◽  
Vol 38 (6) ◽  
pp. 147-154 ◽  
Author(s):  
Hideo Utsumi ◽  
Sang-Kuk Han ◽  
Kazuhiro Ichikawa
Keyword(s):  
Hydroxyl Radical ◽  
Hydroxyl Radicals ◽  
Spin Trapping ◽  
Active Species ◽  
Generation Rate ◽  
Peak Height Ratio ◽  
Dependent Manner ◽  
Concentration Dependent Manner ◽  
Phenol Derivatives ◽  
Semiquinone Radicals

Generation of hydroxyl radicals, one of the major active species in ozonation of water was directly observed with a spin-trapping/electron spin resonance (ESR) technique using 5,5-dimethyl-1-pyrrolineN-oxide (DMPO) as a spin-trapping reagent. Hydroxyl radical were trapped with DMPO as a stable radical, DMPO-OH. Eighty μM of ozone produced 1.08 X 10-6M of DMPO-OH, indicating that 1.4% of •OH is trapped with DMPO. Generation rate of DMPO-OH was determined by ESR/stopped-flow measurement. Phenol derivatives increased the amount and generation rate of DMPO-OH, indicating that phenol derivatives enhance •OH generation during ozonation of water. Ozonation of 2,3-, 2,5-, 2,6-dichlorophenol gave an ESR spectra of triplet lines whose peak height ratio were 1:2:1. ESR parameters of the triplet lines agreed with those of the corresponding dichloro-psemiquinone radical. Ozonation of 2,4,5- and 2,4,6-trichlorophenol gave the same spectra as those of 2,5- and 2,6-dichlorophenol, respectively, indicating that a chlorine group in p-position is substituted with a hydroxy group during ozonation. Amounts of the radical increased in an ozone-concentration dependent manner and were inhibited by addition of hydroxyl radical scavengers. These results suggest that p-semiquinone radicals are generated from the chlorophenols by hydroxyl radicals during ozonation. The p-semiquinone radicals were at least partly responsible for enhancements of DMPO-OH generation.

Hot injection induced synthesis of ZnCdS-rGO/MoS2 heterostructures for efficient hydrogen production and CO2 photoreduction

2021 ◽  
Author(s):  
Amit Gautam ◽  
Saddam Sk ◽  
Amritanjali Tiwari ◽  
Moses Abraham Bokinala ◽  
P. Vijayanand ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Generation Rate ◽  
Co2 Photoreduction ◽  
H2 Generation ◽  
Highly Efficient ◽  
Hot Injection ◽  
And Control

A highly efficient hybrid ZnCdS-rGO/MoS2 heterostructure is successfully synthesized through a hot injection approach and control loading of rGO/MoS2. The synergism provides an unprecedently high H2-generation rate 193.4 mmol H2...

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