Inducing growth of FeNi-Pt match-like magnetic nanoheterostructures on Pt nanotips and dechlorination of hydrochloric ether

Ming Wen; Fan Zhang; Mingzhu Cheng; Qingsheng Wu; Baolei Sun; Yuzhen Sun

doi:10.1002/cphc.201100429

Inducing growth of FeNi-Pt match-like magnetic nanoheterostructures on Pt nanotips and dechlorination of hydrochloric ether

Chemphyschem. 2011 Dec 23;12(18):3573-7. doi: 10.1002/cphc.201100429. Epub 2011 Oct 11.

Authors

Ming Wen¹, Fan Zhang, Mingzhu Cheng, Qingsheng Wu, Baolei Sun, Yuzhen Sun

Affiliation

¹ Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, PR China. m_wen@tongji.edu.cn

PMID: 21990147
DOI: 10.1002/cphc.201100429

Abstract

Newly designed magnetic FeNi-Pt match-like heterostructured nanorods were synthesized by means of induced growth of FeNi nanorods on Pt nanotips. The proposed synthesis mechanism is corroborated by SEM, TEM, XRD and XPS. The magnetic behavior shows that the magnetic saturation and coercivity are strongly dependent on both the shape and the alloy composition. The saturation magnetizations (Ms) and the coercivity (Hc) of nanorods synthesized are larger than those of nanoparticles because of the relatively large anisotropy of nanorods. Maximum saturation magnetization is obtained for Fe(82) Ni(15) -Pt(3) at 226.6 emu g(-1), whereas maximum coercivity is obtained for Fe(20)Ni(77)-Pt(3) at 136.8 Oe. Shape-dependent reactivity toward the reduction of chlorinated solvents was observed for the FeNi-Pt heterostructured nanomaterials. In particular, the Fe(82)Ni(15)-Pt(3) nanorods are highly reactive in the dechlorination process of 1,1,2,2-tetrachloroethane.