Roles of Oxygen Functional Groups in Hydrogen Sulfide Adsorption on Activated Carbon Surface: A Density Functional Study

2019 ◽  
Vol 58 (14) ◽  
pp. 5526-5532 ◽  
Author(s):  
Fenghua Shen ◽  
Jing Liu ◽  
Chenkai Gu ◽  
Dawei Wu
Keyword(s):  
Hydrogen Sulfide ◽  
Activated Carbon ◽  
Functional Groups ◽  
Density Functional ◽  
Carbon Surface ◽  
Functional Study ◽  
Density Functional Study ◽  
Oxygen Functional Groups

Density functional study of hydrogen sulfide adsorption mechanism on activated carbon

2018 ◽  
Vol 171 ◽  
pp. 258-264 ◽  
Author(s):  
Fenghua Shen ◽  
Jing Liu ◽  
Zhen Zhang ◽  
Yuchen Dong ◽  
Chenkai Gu
Keyword(s):  
Hydrogen Sulfide ◽  
Activated Carbon ◽  
Density Functional ◽  
Adsorption Mechanism ◽  
Functional Study ◽  
Density Functional Study

Microstructure and Oxygen Functional Groups on Modified Liquefied Wooden Activated Carbon Fibers with Hydrogen Peroxide

2013 ◽  
Vol 433-435 ◽  
pp. 2003-2007 ◽  
Author(s):  
Wei Gao ◽  
Gaungjie Zhao
Keyword(s):  
Hydrogen Peroxide ◽  
Activated Carbon ◽  
Surface Area ◽  
Functional Groups ◽  
Carbon Fibers ◽  
Photoelectron Spectroscopy ◽  
Density Functional ◽  
Activated Carbon Fibers ◽  
Average Pore ◽  
Oxygen Functional Groups

The aim of this study is to investigate changes in microstructure and oxygen functional groups of liquefied wood activated carbon fibers using density functional theory, FTIR, X-ray photoelectron spectroscopy. Samples were immersed with hydrogen peroxide (H2O2) at three concentrations (15, 20, and 25 wt%), three temperatures (90, 70, and 50 °C) for three periods of time (1, 2, and 3 h). The results reveals that the pores average radius narrow, and micropores turn into mesopores or macropores with the increasing process, which brings about the surface area of treated samples decrease. Numerous oxygen functional groups are observed in the treated samples, and the ratios of oxygen and carbon increase from 3.2% before treated to 14.7% with H2O2 modification. The results confirm that the average pore radius and surface area decrease during treatment due to concentration and temperature. What is more, oxygen functional groups increase significantly with increasing treatment concentration.

Sign in / Sign up

Export Citation Format

Share Document