标题：Removal of Rhodamine B with Fe-supported bentonite as heterogeneous photo-Fenton catalyst under visible irradiation作者：Gao, Yaowen; Wang, Yan; Zhang, Hui

来源出版物：APPLIED CATALYSIS B-ENVIRONMENTAL 卷：178期：SI页：29-36 DOI：10.1016/j.apcatb.2014.11.005 出版年：NOV 2015

会议: 8th European Meeting on Solar Chemistry and Photocatalysis - Environmental Applications (SPEA)

会议地点: Thessaloniki, GREECE

会议日期: 2014

摘要：Fe-supported bentonite (Fe-B) was successfully fabricated as a low-cost heterogeneous catalyst for adsorption and visible light photo-Fenton degradation of Rhodamine B (RhB) from aqueous solution. The support of iron rendered a significant increase in specific surface area and a slight increase in interlayer spacing of bentonite, thus improving the adsorption performance of Fe-B. The maximum adsorption capacity of RhB onto Fe-B was calculated to be 227.27 mg g(-1) by the fitting of Langmuir adsorption isotherm. The catalytic activity of Fe-B was evaluated by the degradation of RhB (80 mg L-1) in the presence of H2O2 under visible light irradiation. Light-emitting diodes (LED) lamps were used as visible light source as they are small in size, energy efficient, compact, have a relatively long life span, and can be facile to operate. The estimated quantum yield of photodegradation of RhB was calculated as (1.66 +/- 0.21) x 10(-2). The results showed that the Fe-B catalyst demonstrated good performance in the removal of RhB by combination of adsorption and degradation with optimum operating conditions of Fe-B 0.25 g L-1, natural pH 4.2 and H2O2 12 mM. The Fe-B catalyst retained high visible light photocatalytic activity toward RhB in a wide pH range from 3.0 to 9.0 and exhibited good chemical stability after five consecutive adsorption/degradation cycles.

入藏号：WOS:000358096900005

文献类型：Article; Proceedings Paper

语种：English

作者关键词：Circumneutral pH, Degradation, Fe-supported bentonite, Visible light photo-Fenton, Rhodamine B

扩展关键词：ULTRASOUND-ASSISTED REMOVAL; ACID ORANGE 7; AQUEOUS-SOLUTION; PHOTOCATALYTIC DEGRADATION; ORGANIC CONTAMINANTS; HYDROGEN-PEROXIDE; PILLARED BENTONITE; LANDFILL LEACHATE; LIGHT IRRADIATION; METHYLENE-BLUE

通讯作者地址：Zhang, Hui; Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

电子邮件地址：eeng@whu.edu.cn

地址：

[Gao, Yaowen; Wang, Yan; Zhang, Hui] Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

[Wang, Yan] Anhui Sci & Technol Univ, Dept Environm Sci & Engn, Fengyang 233100, Peoples R China.

研究方向：Chemistry; Engineering

ISSN：0926-3373

eISSN：1873-3883

影响因子（2014）：7.435