Size Adjustment of Iron Phosphate Nanoparticles by Using Mixed Acids
详细信息 查看全文
- 作者：Tongbao Zhang ; Yangcheng Lu ; Guangsheng Luo
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2013
- 出版时间：May 29, 2013
- 年：2013
- 卷：52
- 期：21
- 页码：6962-6968
- 全文大小：428K
- 年卷期：v.52,no.21(May 29, 2013)
- ISSN：1520-5045
文摘
In this work, the size adjustment of FePO4 nanoparticles in the range of 9鈥?0 nm was conducted on a general platform of coupling fast precipitation in a microreactor and thermal treatment process. Specifically, we used the mixture of nitric acid and phosphoric acid as the continuous fluid to change the free Fe3+ concentration and control the supersaturation of FePO4 in fast precipitation. Inductively coupled plasma optical emission spectroscopy (ICP-OES) and X-ray diffraction (XRD) verified that as-prepared nanoparticles were high-purity amorphous FePO4路2H2O. Transmission electron microscopy (TEM) verified their good dispersity and narrow size-distribution (standard deviation, 5 nm). Brunauer鈥揈mmet鈥揟eller (BET) and Cr (III) adsorption verified their property accordant as ion adsorbents. The effect of mixed acids on species with respect to iron was also investigated by UV鈥搗is spectra. The technique would be easily scaled up for size controllable and property accordant FePO4 nanoparticles preparation.