Effects of surface oxygen functional groups on activated carbon on the adsorption and photocatalytic degradation activities of a TiO<sub>2</sub>-AC hybrid for methylene blue and methylene orange

ZHONG Yong-ke; ZHOU Bin; ZHANG Cheng-jiang; WU Di

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Article Navigation > New Carbon Mater. > 2017 > 32(5): 460-466

ZHONG Yong-ke, ZHOU Bin, ZHANG Cheng-jiang, WU Di. Effects of surface oxygen functional groups on activated carbon on the adsorption and photocatalytic degradation activities of a TiO2-AC hybrid for methylene blue and methylene orange. New Carbon Mater., 2017, 32(5): 460-466.

Citation:

ZHONG Yong-ke, ZHOU Bin, ZHANG Cheng-jiang, WU Di. Effects of surface oxygen functional groups on activated carbon on the adsorption and photocatalytic degradation activities of a TiO₂-AC hybrid for methylene blue and methylene orange. New Carbon Mater., 2017, 32(5): 460-466.

Citation:

ZHONG Yong-ke, ZHOU Bin, ZHANG Cheng-jiang, WU Di. Effects of surface oxygen functional groups on activated carbon on the adsorption and photocatalytic degradation activities of a TiO₂-AC hybrid for methylene blue and methylene orange. New Carbon Mater., 2017, 32(5): 460-466.

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Effects of surface oxygen functional groups on activated carbon on the adsorption and photocatalytic degradation activities of a TiO₂-AC hybrid for methylene blue and methylene orange

Pharmaceutical Department of Zunyi Medical College, Zunyi 563000, China

Funds: National Natural Science Foundation of China (21167018).

Received Date: 2017-05-05
Accepted Date: 2017-11-13
Rev Recd Date: 2017-08-26
Publish Date: 2017-10-28

Abstract

Abstract

A series of activated carbons (AC) with different amounts of surface oxygen functional groups was obtained by nitric acid oxidation and heat treatment at different temperatures, and these were used as supports for a TiO₂ photocatalyst. The nature and number of the surface oxygen functional groups were determined by Boehm titration. The pore texture and morphology of the ACs and the TiO₂-AC hybrid were characterized by nitrogen adsorption and scanning electron microscopy. The adsorption and photocatalytic activity of the material under ultraviolet light irradiation were investigated using methylene blue (MB, cation dye) and methylene orange (MO, anion dye) as the model compounds. Results show that the oxidation and heat treatment change the surface oxygen functional groups much more than they do the pore texture. The surface oxygen functional groups, especially the surface carboxylic acid, control the adsorption and photocatalytic activities for MB and MO over the TiO₂-AC hybrid. The surface oxygen functional groups have a much greater influence on MB degradation than that on MO. The photocatalytic degradation activity for MB decreases at all heat treatment temperatures while that for MO is increased by heat treatment at 250℃.
- TiO₂,
- Activated carbon,
- Surface oxygenic groups,
- Photocatalytic activity

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References(21)

References

Leary R, Westwood A. Carbonaceous nanomaterials for the enhancement of TiO₂ photocatalysis[J]. Carbon, 2011, 49:741-772.

黄正宏, 许德平, 康飞宇, 等. 炭与TiO₂光催化剂的复合及协同作用研究进展[J]. 新型炭材料, 2004, 19(3):229-238. (HUANG Zheng-hong, XU De-ping, KANG Fei-yu, et al. Recent developments in the preparation and of a C/TiO₂ composite photocatalyst[J]. New Carbon Materials, 2004, 19(3):229-238.)

Li Y J, Li J, Ma M Y, et al. Preparation and photocatalytic activity of TiO₂-coated granular activated carbon composites by a molecular adsorption-deposition method[J]. Science China Series B:Chemistry, 2008, 51:1036-1043.

Zhu B, Zou L. Trapping and decomposing of color compounds from recycled water by TiO₂ coated activated carbon[J]. J Environ Manage, 2009, 90:3217-3225.

Wang X J, Liu Y F, Hu Z H, et al. Degradation of methyl orange by composite photocatalysts nano-TiO₂ immobilized on activated carbons of different porosities[J]. J Hazard Mater, 2009, 169:1061-1067.

Matos J, Laine J, Herrmann J M. Synergy effect in the photocatalytic degradation of phenol on a suspended mixture of titania and activated carbon[J]. Appl Catal B:Environ, 1998, 18:281-291.

Cordero T, Chovelon J M, Duchamp C, et al. Surface nano-aggregation and photocatalytic activity of TiO₂ on H-type activated carbons[J]. Appl Catal B:Environ, 2007, 73:227-235.

因博, 王际童, 徐伟, 等. 中孔炭负载二氧化钛光催化剂的制备及降解甲基橙[J]. 新型炭材料, 2013, 28(1):47-54. (YIN Bo,WANG Ji-tong,XU Wei,et al. Preparation of TiO₂/mesoporous carbon composites and their photocatalytic performance for methyl orange degradation[J]. New Carbon Materials, 2013, 28(1):47-54.)

刘守新, 陈孝云. 活性炭孔结构对TiO₂/AC复合光催化剂催化活性的影响[J]. 物理化学学报[J]. 2008, 24(3):533-538. (LIU Shou-Xin, CHEN Xiao-Yun. Effect of pore structure of activated carbon on the photocatalytic activity of TiO₂/AC composite photocatalyst[J]. Acta Physico Chimica Sinica, 2008, 24(3):533-538.)

陈玉娟, 胡中华, 王晓静, 等. 活性炭孔径和比表面对TiO₂/AC光催化剂性能的影响[J]. 物理化学学报, 2008, 24(9):1589-1596. (CHEN Yu-Juan, HU Zhong-Hua, WANG Xiao-Jing, et al. Influence of pore size and surface area of activated carbon on the performance of TiO₂/AC photocatalyst[J]. Acta Physico Chimica Sinica, 2008, 24(9):1589-1596.)

Zhong Y, Li G, Zhu L, et al. Low temperature hydroxylation of benzene to phenol by hydrogen peroxide over Fe/activated carbon catalyst[J]. J Mol Catal A:Chem, 2007, 272:169-173.

Figueiredo J L, Pereira M F R, Freitas M M A, et al. Modification of the surface chemistry of activated carbons[J]. Carbon, 1999, 37:1379-1389.

Zhang X, Zhou M, Lei L. Enhancing the concentration of TiO₂ photocatalyst on the external surface of activated carbon by MOCVD[J]. Mater Res Bull, 2005, 40:1899-1904.

Bashkova S, Bagreev A, Bandosz T J. Catalytic properties of activated carbon surface in the process of adsorption/oxidation of methyl mercaptan[J]. Catalysis Today, 2005, 99:323-328.

Moreno-Castilla C, López-Ramón M V, Carrasco-Marín F. Changes in surface hemistry of activated carbons by wet oxidation[J]. Carbon, 2000, 38:1995-2001.

Zhong Y, Yuan Z, Wu Q, et al. Effect of surface oxides and steric hindrance on the adsorption of dimethoxon from chloroform on activated carbons[J]. Adsorpt Sci Technol, 2013, 31:385-395.

Terzyk A P, Rychlicki G, Cwiertnia M S, et al. Effect of the carbon surface layer chemistry on benzene adsorption from the vapor phase and from dilute aqueous solutions[J]. Langmuir, 2005, 21:12257-12267.

Li L, Quinlivan P A, Knappe D R U. Effects of activated carbon surface chemistry and pore structure on the adsorption of organic contaminants from aqueous solution[J]. Carbon, 2002, 40:2085-2100.

Gokce Y, Aktas Z. Nitric acid modification of activated carbon produced from waste tea and adsorption of methylene blue and phenol[J]. Appl Surf Sci, 2014, 313:352-359.

Berrios M, Martín M Á, Martín A. Treatment of pollutants in wastewater:Adsorption of methylene blue onto olive-based activated carbon[J]. J Ind Eng Chem, 2012, 18:780-784.

王晓静, 胡中华, 陈玉娟, 等. 以偏钛酸为原料制备高效负载型纳米TiO₂/活性炭光催化剂[J]. 化学学报, 2008, 66(22):2445-2450. (WANG Xiao-Jing, HU Zhong-Hua, CHEN Yu-Juan, et al. High performance supported photocatalyst of nano-TiO₂/activated carbon from metatitanic acid[J]. Acta Chimica Sinica, 2008, 66(22):2445-2450.)

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