Research Progress of Adsorption and Photocatalysis of Formaldehyde on TiO2/AC

Based on the increasingly serious formaldehyde pollution, effective degradation of formaldehyde has become a practical problem that humans urgently need to solve. Among many treatment methods, activated carbon has the advantages of large specific surface area, high adsorption efficiency, and uniform pore size distribution. As a kind of clean photocatalytic material for formaldehyde degradation, titanium dioxide supported by activated carbon has become a research hotspot to develop adsorption-catalytic materials for formaldehyde degradation. In this paper, the research progress of activated carbon and its modification, the photocatalytic principle and modification of titanium dioxide, and TiO2/AC materials are reviewed. The results show that the pore size distribution gradient and acidic oxygen-containing functional groups of activated carbon play key roles in the formaldehyde adsorption process. TiO2 doped with metal ions and nonmetal ions can significantly improve the photocatalytic activity. The TiO2/AC material can greatly improve the photocatalytic rate and achieve the technical goal of efficient and clean degradation for formaldehyde.

Download Full-text

A new method on producing high surface area activated carbon: The effect of salt on the surface area and the pore size distribution of activated carbon prepared from pistachio shell

Chemical Engineering Journal ◽

10.1016/j.cej.2010.10.061 ◽

2011 ◽

Vol 166 (1) ◽

pp. 191-197 ◽

Cited By ~ 61

Author(s):

Hacer Dolas ◽

Omer Sahin ◽

Cafer Saka ◽

Halil Demir

Keyword(s):

Activated Carbon ◽

Pore Size Distribution ◽

Pore Size ◽

Size Distribution ◽

Surface Area ◽

High Surface ◽

High Surface Area ◽

New Method ◽

Pistachio Shell

Download Full-text

Desulfurization Properties of Activated Carbon Fibers

Journal of Engineered Fibers and Fabrics ◽

10.1177/155892501400900208 ◽

2014 ◽

Vol 9 (2) ◽

pp. 155892501400900 ◽

Cited By ~ 1

Author(s):

Wei Liu ◽

Sabit Adanur

Keyword(s):

Activated Carbon ◽

Sulfur Dioxide ◽

Pore Size Distribution ◽

Pore Size ◽

Size Distribution ◽

Carbon Fibers ◽

Adsorption Rate ◽

Carbon Powder ◽

Activated Carbon Fibers ◽

Breakthrough Capacity

Activated carbon fibers (ACFs) are one of the most promising adsorbents due to their outstanding properties, such as more exposed adsorption surface, narrower pore size distribution, fast adsorption rate and flexibility, in comparison with granular activated carbon and activated carbon powder. In this work, ACFs manufactured from various raw materials were studied and their pore structures and sulfur dioxide removal performance under dry and humid conditions were investigated. From the ACFs studied in this paper, larger surface area was found correspond to higher total pore volume and larger DA micropore diameter. In dry air, breakthrough capacity of ACFs with sulfur dioxide was found to be proportionately dependent on micropore ratio and pore size distribution. Although powdered activated carbon (PAC) showed higher breakthrough capacity, its adsorption rate was slower than ACFs due to the difference of the pore structure. The presence of water vapor in the air stream greatly increased SO2 adsorption capacities of ACFs but affected their utilization differently.

Download Full-text

“Water-in-salt” electrolyte enhanced high voltage aqueous supercapacitor with carbon electrodes derived from biomass waste-ground grain hulls

RSC Advances ◽

10.1039/d0ra07448a ◽

2020 ◽

Vol 10 (58) ◽

pp. 35545-35556

Author(s):

Mingjun Pang ◽

Shang Jiang ◽

Jianguo Zhao ◽

Sufang Zhang ◽

Runwei Wang ◽

...

Keyword(s):

Activated Carbon ◽

Specific Surface ◽

Pore Size Distribution ◽

Pore Size ◽

Size Distribution ◽

High Voltage ◽

High Specific Surface Area ◽

Carbon Electrodes ◽

Koh Activation ◽

Biomass Waste

To design high specific surface area and optimize the pore size distribution of materials, we employ a combination of carbonization and KOH activation to prepare activated carbon derived from ground grain hulls.

Download Full-text