Facile fabrication of sea buckthorn biocarbon (SB)@alpha-Fe2O3 composite catalysts and their applications for adsorptive removal of doxycycline wastewater through a cohesive heterogeneous Fenton-like regeneration

doi:10.1039/c6ra07382d

NWIPB OpenIR

	Facile fabrication of sea buckthorn biocarbon (SB)@alpha-Fe2O3 composite catalysts and their applications for adsorptive removal of doxycycline wastewater through a cohesive heterogeneous Fenton-like regeneration
	Zhang, Xia 1; Bai, Bo 2; Wang, Honglun 2; Suo, Yourui 2
	2016
发表期刊	RSC ADVANCES
卷号	6 期号:44 页码:38159-38168
文章类型	Article
摘要	A facile, low-cost and novel route for successful synthesis of SB@alpha-Fe2O3 composite catalysts was described through a simple thermal conversion process from SB@beta-FeOOH precursor. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and Fourier transformed infrared spectroscopy (FTIR) analysis, respectively. The experimental results indicated that alpha-Fe2O3 phase nanoparticles in the SB@alpha-Fe2O3 composites appeared in spindly nanorods and were highly dispersed on the surface of sea buckthorn biocarbon (SB) platform. The mechanism of thermal conversion from SB@beta-FeOOH precursor to SB@alpha-Fe2O3 products was discussed. Subsequently, the naked SB and resultant SB@alpha-Fe2O3 composites were applied in fixed-bed columns for the effective pre-adsorption of doxycycline (DO) from an aqueous solution. Breakthrough curves for DO adsorption were carried out at different empty bed contact times (EBCTs). The results showed that the adsorption capacity of SB@alpha-Fe2O3 was much better than that of SB at all tested EBCTs. The DO-saturated SB@alpha-Fe2O3 bed was almost completely regenerated in situ through triggering a succedent heterogeneous Fenton-like regeneration process with an H2O2 dose of 1% w/v for 3 h, while the naked SB was hardly regenerated by a parallel processes. In view of the facile synthetic method of composites, the superior adsorption performance and the effective way of regeneration for consecutive pre-adsorption/regeneration cycles, the heterogeneous Fenton-like oxidation of DO-exhausted SB@alpha-Fe2O3 presents to be a promising and viable strategy for the regeneration of adsorbent. Regeneration mechanism of SB@alpha-Fe2O3 was in-depth investigated.
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1039/c6ra07382d
关键词[WOS]	FIXED-BED COLUMN ; ACTIVATED CARBON ; AQUEOUS-SOLUTION ; HYDROGEN-PEROXIDE ; BETA-FEOOH ; PYROLYSIS TEMPERATURE ; ALPHA-FE2O3 PARTICLES ; ENHANCED ADSORPTION ; GRAPHENE OXIDE ; DEGRADATION
收录类别	SCI
语种	英语
项目资助者	China Postdoctoral Science Special Foundation ; Scientific Research Foundation for the Returned Overseas Chinese Scholars ; National Natural Science Foundation of China(21176031) ; Shanxi Provincial Natural Science Foundation of China(2015JM2071) ; Fundamental Research Funds for the Central Universities(310829162014)
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000374495400084
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/5751
专题	中国科学院西北高原生物研究所
作者单位	1.Changan Univ, Coll Environm Sci & Engn, Xian 710054, Shaanxi, Peoples R China 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Tibetan Med Res, Xining 810008, Qianghai, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xia,Bai, Bo,Wang, Honglun,et al. Facile fabrication of sea buckthorn biocarbon (SB)@alpha-Fe2O3 composite catalysts and their applications for adsorptive removal of doxycycline wastewater through a cohesive heterogeneous Fenton-like regeneration[J]. RSC ADVANCES,2016,6(44):38159-38168.
APA	Zhang, Xia,Bai, Bo,Wang, Honglun,&Suo, Yourui.(2016).Facile fabrication of sea buckthorn biocarbon (SB)@alpha-Fe2O3 composite catalysts and their applications for adsorptive removal of doxycycline wastewater through a cohesive heterogeneous Fenton-like regeneration.RSC ADVANCES,6(44),38159-38168.
MLA	Zhang, Xia,et al."Facile fabrication of sea buckthorn biocarbon (SB)@alpha-Fe2O3 composite catalysts and their applications for adsorptive removal of doxycycline wastewater through a cohesive heterogeneous Fenton-like regeneration".RSC ADVANCES 6.44(2016):38159-38168.