Comparative study on arsenate removal mechanism of MgO and MgO/TiO2 composites: FTIR and XPS analysis

doi:10.1039/c5nj02358k

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院固体物理研究所

	Comparative study on arsenate removal mechanism of MgO and MgO/TiO2 composites: FTIR and XPS analysis
	Wu, Pei-Yun 1; Jiang, Yin-Ping 1; Zhang, Qun-Ying 1; Jia, Yong 1; Peng, Dai-Yin 1; Xu, Wei 2
刊名	NEW JOURNAL OF CHEMISTRY
	2016
卷号	40 期号:3 页码:2878-2885
DOI	10.1039/c5nj02358k
文献子类	Article
英文摘要	The adsorption of arsenate (As(V)) ions onto magnesium oxide (MgO) and magnesium oxide/titanium oxide (MgO/TiO2) adsorbents was investigated by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and zeta potential analysis to reveal the molecular mechanism. Water and carbon dioxide molecules in air changed the surface structures of MgO and TiO2, which resulted in Mg(OH)(2) formation and surface carbonate-like species. On the surface of MgO, unidentate carbonate, bicarbonate and bidentate carbonate were formed, which did not contribute to As(V) removal. The formed Mg(OH)(2) directly reacted with As(V) to form magnesium arsenate, which was confirmed by XRD and FTIR. On the TiO2 surface monodentate carbonate, bicarbonate and CO2- species were confirmed by FTIR. Among them, the surface monodentate carbonate species participated in the ion exchange process towards As(V) ions, which was determined by FTIR and quantified by calculation from the XPS C 1s spectra. The occurrence of FTIR bands at 844 cm(-1) (As-O bond) and 808 cm(-1) (As-OTi bond) suggested that the protonated bidentate binuclear complex, (TiO)(2)AsO(OH) was possibly the dominant species on the TiO2 surface.
WOS关键词	NANOCRYSTALLINE TIO2 FILMS ; CARBON-DIOXIDE ; ADSORPTION MECHANISM ; OXIDE ADSORBENT ; AQUEOUS-SOLUTIONS ; TITANIUM-DIOXIDE ; AS(V) REMOVAL ; DOPED TIO2 ; MAGNESIUM ; SURFACE
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000372425600117
资助机构	Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; Natural Science Foundation of Education Committee of Anhui Province(KJ2014A135) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162) ; National Natural Science Foundation of China(51301162)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/22028]
专题	合肥物质科学研究院_中科院固体物理研究所
作者单位	1.Anhui Univ Chinese Med, Inst Pharmaceut Chem, Dept Pharm, Hefei 230012, Peoples R China 2.Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Wu, Pei-Yun,Jiang, Yin-Ping,Zhang, Qun-Ying,et al. Comparative study on arsenate removal mechanism of MgO and MgO/TiO2 composites: FTIR and XPS analysis[J]. NEW JOURNAL OF CHEMISTRY,2016,40(3):2878-2885.
APA	Wu, Pei-Yun,Jiang, Yin-Ping,Zhang, Qun-Ying,Jia, Yong,Peng, Dai-Yin,&Xu, Wei.(2016).Comparative study on arsenate removal mechanism of MgO and MgO/TiO2 composites: FTIR and XPS analysis.NEW JOURNAL OF CHEMISTRY,40(3),2878-2885.
MLA	Wu, Pei-Yun,et al."Comparative study on arsenate removal mechanism of MgO and MgO/TiO2 composites: FTIR and XPS analysis".NEW JOURNAL OF CHEMISTRY 40.3(2016):2878-2885.