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

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 ; Bai, Bo ; Wang, Honglun ; Suo, Yourui
	2016
发表期刊	RSC ADVANCES
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.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/27606
专题	中国科学院西北高原生物研究所
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.
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.
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 (2016).