酵母菌模板辅助合成Co_3O_4空心微球催化NaBH_4水解制氢  

Hydrogen Generation from Hydrolysis of Sodium Borohydride Using Co_3O_4 Hollow Microspheres Synthesized with Yeast Template

作　　者：魏磊 马麦霞[1] 卢艳红[1] 王东升[1] 张素玲[1] 赵娣[1] 马卫攀 WEI Lei;MA Mai-Xia;LU Yan-Hong;WANG Dong-Sheng;ZHANG Su-Ling;ZHAO Di;MA Wei-Pan(College of Chemistry and Materials Science, Langfang Normal University, Langfang 065000, Chin)

机构地区：[1]廊坊师范学院化学与材料科学学院,廊坊065000

出　　处：《无机材料学报》2018年第6期648-652,共5页Journal of Inorganic Materials

基　　金：河北省自然科学基金(B2017408042);河北省教育厅资助项目(BJ2016044;QN2017128);廊坊师范学院科学研究项目(LSLB201701)~~

摘　　要：预先在酵母菌模板表面沉积Co(OH)3,经高温煅烧后成功制得Co_3O_4空心微球,并作为前驱体催化Na BH4水解制氢。通过场发射扫描电镜(FE-SEM)和X射线衍射(XRD)进行样品的微观形貌和物相分析。研究结果表明,当反应液中Na BH4含量为10wt%时,模板法制备的Co_3O_4空心微球催化产氢速率高达2140 m L/(min×g)(25℃),约是同等条件下无模板制备Co_3O_4活性的9倍,且所制备的Co_3O_4空心微球长期储存性能良好。Co（OH）3 was firstly deposited on the surface of yeast template, and then Co3O4 hollow microspheres （denoted as Co3O4-HM） were successfully achieved by calcination. Co3O4-HM were employed as catalyst precursor for hydrogen generation from the hydrolysis of sodium borohydride. Field-emission scanning electron microscopy （FE-SEM） and X-ray diffraction （XRD） were used for morphology and phase analyses, respectively. When NaBH4 concentration is 10wt% in alkaline solution, the as-synthesized Co3O4-HM present high hydrogen generation rate up to 2140 mL/（min.g） at 25 ℃, which is almost nine times of that of Co3O4 synthesized without yeast template at the same condition. Furthermore, the Co3O4-HM show excellent stability for long-term storage.

关 键 词：制氢 硼氢化钠 CO3O4 酵母菌 模板法 

分 类 号：O69[理学—化学] TK91[动力工程及工程热物理]