Effect of the pore size of TiO-loaded activated carbon fiber on its photocatalytic activity

2005 ◽  
Vol 52 (12) ◽  
pp. 1329-1334 ◽  
Author(s):  
R YUAN ◽  
R GUAN ◽  
J ZHENG
2014 ◽  
Vol 123 ◽  
pp. 145-148 ◽  
Author(s):  
Guihua Chen ◽  
Yong Wang ◽  
Qianhong Shen ◽  
Yanjiang Song ◽  
Gangling Chen ◽  
...  

Author(s):  
Prasenjit Kar ◽  
Komal Shukla ◽  
Pratyush Jain ◽  
Raju Kumar Gupta

The developed Fe2O3@BC heterojunction photocatalyst supported over activated carbon fiber exhibited efficient photocatalytic activity for degradation of antipyrine under visible light irradiation.


2020 ◽  
Vol 20 (11) ◽  
pp. 6844-6849
Author(s):  
Thanh Ngoc Nguyen ◽  
Vinh Van Tran ◽  
Vu Khac Hoang Bui ◽  
Minjeong Kim ◽  
Duckshin Park ◽  
...  

Titanium dioxide (TiO2) is a semiconductor photocatalyst widely applied in numerous fields due to possessing prominent photocatalytic properties. However, its practical applications in the form of nanoparticles or powders still have remained several limitations. Recently, novel photocatalytic porous composites have been discovered to be potential alternative approaches. In the present study, nanostructured magnesium-aminoclay-based TiO2 (MgAC–TiO2) was successfully deposited on an activated carbon fiber (ACF) matrix using the sol–gel approach followed by calcination at 350°C in an air atmosphere. The structure and photocatalytic activity of this as-prepared photocatalyst composite were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), the Brunauer-Emmett-Teller (BET), and UV-vis diffuse reflectance spectral analysis. The photocatalytic activity of MgAC–TiO2/ACF was investigated under batch conditions for the removal of methylene blue (MB) in solution under UV irradiation and dark conditions. The results revealed that MB is absorbed by MgAC–TiO2/ACF and that its photodecomposition occurs under UV irradiation. The addition of MgAC can prevent the sintering of TiO2 act as a dispersing agent to create a high specific surface area, and thus enhance photocatalytic efficiency. In addition, ACF in the MgAC–TiO2/ACF composite can additionally improve the photocatalytic activity by hindering electron-hole recombination, which is known as a synergetic effect, and thereby enhancing the photodegradation and removal efficiency of MB.


2014 ◽  
Vol 84 (17) ◽  
pp. 1891-1900 ◽  
Author(s):  
Xiaoling Guo ◽  
Jie Dai ◽  
Kui Zhang ◽  
Xiangdong Wang ◽  
Zhen Cui ◽  
...  

2011 ◽  
Vol 480-481 ◽  
pp. 6-10
Author(s):  
Yan Feng Yang ◽  
Xue Jun Zhang ◽  
Hai Yan Li

General purpose pitch-based carbon fiber (PCF) was pretreated with steam to develop pores on the surface of fiber. After immersed in cobalt salt solution, PCF was used as raw materials to prepare activated carbon fiber (ACF) through steam activation process. The effect of pretreatment of carbon fiber on specific surface area, mesopore volume and pore size distribution was investigated by N2 adsorption, and morphology of the resultant ACF was observed with scanning electron microscope(SEM). The results show that pretreatment of PCF enlarges specific surface area and mesopore ratio of ACF remarkably. The best ACF obtained in experiment is the one with specific surface area of 2670 m2/g and mesoporosity of 61.8%. Cobalt has evident catalysis in preparing ACF from activation of PCF, while specific surface area and pore size of ACF get smaller with cobalt salt immersion when pretreatment is too strong.


2015 ◽  
Vol 44 (5) ◽  
pp. 2267-2275 ◽  
Author(s):  
Tingting Lu ◽  
Xinxin Xu ◽  
Huili Li ◽  
Zhenyu Li ◽  
Xia Zhang ◽  
...  

NCC/POM/ACF composite material was successfully fabricated, and displays excellent photocatalytic activity in visible light.


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