表面技术2017，Vol.46Issue(10)：143-148,6.DOI:10.16490/j.cnki.issn.1001-3660.2017.10.020
电镀条件对CoP非晶镀层催化活性的影响
Effects of Electroplating Condition on Catalytic Activity of CoP Amorphous Plating
摘要
Abstract
The work aims to investigate influence rule of electroplating condition on catalytic performance of CoP plating for hydrogen generation from hydrolysis of sodium borohydride. CoP amorphous catalysts were deposited on copper sheet through electroplating, and used for hydrogen production from hydrolysis of sodium borohydride. Microstructure and element composition of the catalysts were characterized by using field-emission scanning electron microscope (FE-SEM) and energy dispersive spectroscopy (EDS), respectively. An orthogonal experiment was performed to investigate level of the influences of deposition time, deposition temperature and current density on catalyst activity. Meanwhile, the influences of NaBH4 concentra- tion, reaction temperature and recycling on the catalyst performance were discussed. The results of FE-SEM and EDS indicated that the CoP coating was piled up with crystalline grain with a diameter of about 200 nm, and the atomic ratio of Co and P was 3.6:1. Orthogonal experiment results showed that the influence degree of these factors was in the following order: deposition time > temperature > current density. The prepared CoP catalyst exhibited the highest activity when the deposition temperature, time and current density was 20℃ , 1 min and 5.56 A/dm2, respectively. Hydrogen generation rate was up to 2750 mL/(min·g) at 30℃ in the system of 6%NaBH4+2%NaOH, and apparent activation energy was 41.2 kJ/mol. After recycling for 4 times, the catalyst activity decreased by 64%. CoP/Cu catalysts exhibiting excellent activity in sodium borohydride hydrolysis are suc-cessfully prepared in the method of electroplating. Among different electroplating conditions, deposition time is the primary factor, followed by deposition temperature and current density.关键词
CoP/电镀/硼氢化钠/制氢/正交试验Key words
CoP/electroplating/sodium borohydride/hydrogen production/orthogonal experiment分类
航空航天引用本文复制引用
安然,魏磊,李怡莹,高静..电镀条件对CoP非晶镀层催化活性的影响[J].表面技术,2017,46(10):143-148,6.基金项目
河北省自然科学基金(B2017408042) （B2017408042）
河北省教育厅资助科研项目(BJ2016044) （BJ2016044）
廊坊师范学院科学研究项目(LSLB201701) Supported by the Natural Science Foundation of Hebei Province (B2017408042), Research Project of Hebei Education Department (BJ2016044) and Research Project of Langfang Teachers University (LSLB201701) （LSLB201701）
