The main factor to improve the performance of CoSe2 for photocatalytic CO2 reduction: element doping or phase transformation

2020 ◽  
Vol 8 (8) ◽  
pp. 4457-4463 ◽  
Author(s):  
Yong Xu ◽  
Jiang Mo ◽  
Guanqun Xie ◽  
Xiaoxia Wang ◽  
Shujiang Ding
Keyword(s):  
Phase Transformation ◽  
Phase Change ◽  
Phase Change Material ◽  
Electron Density ◽  
Active Sites ◽  
Nitrogen Doping ◽  
Co2 Reduction ◽  
Element Doping ◽  
Change Material ◽  
Main Factor

A nitrogen doping-induced phase change material of cobalt diselenide was first utilized for the photocatalytic reduction of CO2. The doping of N can enhance the electron density of cobalt active sites, thus improving the bonding ability of Co and COOH*.

Changes in Chemical and Structural Properties of Phase-Change Material GeTe with Nitrogen Doping and Annealing

2010 ◽  
Vol 49 (6) ◽  
pp. 061801 ◽  
Author(s):  
Ki-Hong Kim ◽  
Sang-Jun Choi ◽  
Jae-Gwan Chung ◽  
Jun-Ho Lee ◽  
Sung Heo
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Structural Properties ◽  
Nitrogen Doping ◽  
Change Material

scholarly journals Nitrogen doping-induced local structure change in a Cr2Ge2Te6 inverse resistance phase-change material

2020 ◽  
Vol 1 (7) ◽  
pp. 2426-2432
Author(s):  
Yi Shuang ◽  
Shogo Hatayama ◽  
Hiroshi Tanimura ◽  
Daisuke Ando ◽  
Tetsu Ichitsubo ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Phase Change ◽  
Phase Change Material ◽  
Local Structure ◽  
Nitrogen Doping ◽  
Structure Change ◽  
Nitrogen Doped ◽  
Change Mechanism ◽  
Change Material

This work investigated the phase change mechanism of a nitrogen-doped Cr2Ge2Te6 phase change material via Raman scattering.

Numerical Calculation and Simulation on Melting and Solidification Time Periods of a Phase Change Material

2012 ◽  
Vol 455-456 ◽  
pp. 374-381
Author(s):  
Xiao Qin Sun ◽  
Quan Zhang ◽  
Ying Jun Liu ◽  
Hong Xing Yang ◽  
Lin Feng Zhang ◽  
...  
Keyword(s):  
Numerical Calculation ◽  
Energy Storage ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Characteristics ◽  
Renewable Energy Resources ◽  
Calculation Results ◽  
Change Material ◽  
Melting And Solidification ◽  
Main Factor

Energy storage technology is becoming more important nowadays due to use of renewable energy resources. The heat transfer performance of a PCM (phase change material) which is the carrier of energy is the main factor that affects its utilization. This paper presents the thermal characteristics of the PCM-20. An energy storage module is designed based on the numerical calculation results from the MATLAB. Numerical simulation about this module is carried out by CFD software. The simulation results have been compared with the results of numerical calculation and the error between them has been analyzed and discussed.

scholarly journals Experimental Examination on the Cooling of a Helmet using Microencapsulated Phase Change Material

2019 ◽  
Vol 9 (1S4) ◽  
pp. 1065-1068
Keyword(s):  
Wind Speed ◽  
Phase Change ◽  
Phase Change Material ◽  
Heat Generation ◽  
Cooling Time ◽  
Generation Rate ◽  
Heat Generation Rate ◽  
Microencapsulated Phase Change Material ◽  
Change Material ◽  
Main Factor

A helmet is the important personal protective equipment for the motorcyclist. This work analyses the use of the microencapsulated phase change material (MPCM) to cool the helmet and also investigate the effect of the inside heat generation rate, simulated radiation and wind speed on the cooling systems. The results indicate that with MPCM packed helmet has the ability to sustain constant temperature for more time when compared to the normal helmet. The findings also show that the head heat generation rate is the main factor that will affect the cooling time of the system. The wind speed and simulated radiation did not affect much on the cooling time. The results depicted that the extension of the helmet cooling time is based on the amount of MPCM embedded inside the helmet. Even though this investigation concentrates on cooling of helmet, the findings would also be helpful for the improvement of MPCM in many other applications.

NUMERICAL STUDY OF A SOLAR GREENHOUSE DRYER WITH A PHASE-CHANGE MATERIAL AS AN ENERGY STORAGE MEDIUM

2018 ◽  
Vol 49 (6) ◽  
pp. 509-528 ◽  
Author(s):  
Orawan Aumporn ◽  
Belkacem Zeghmati ◽  
Xavier Chesneau ◽  
Serm Janjai
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Phase Change Material ◽  
Numerical Study ◽  
Storage Medium ◽  
Solar Greenhouse ◽  
Change Material

CONTROL OF HEAT RELEASE ENERGY DURING HEATING FROM SOLID-SOLID PHASE CHANGE MATERIAL

2018 ◽  
Author(s):  
Ryohei Gotoh ◽  
Tsuyoshi Totani ◽  
Masashi Wakita ◽  
Harunori Nagata
Keyword(s):  
Phase Change ◽  
Heat Release ◽  
Phase Change Material ◽  
Solid Phase ◽  
Change Material
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