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.
AN Ran,WEI Lei,LI Yi-ying,GAO Jing.Effects of Electroplating Condition on Catalytic Activity of CoP Amorphous Plating[J].Surface Technology,2017,46(10):143-148
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
投稿时间:2017-02-08  修订日期:2017-10-20
DOI:10.16490/j.cnki.issn.1001-3660.2017.10.020
中文关键词:  CoP  电镀  硼氢化钠  制氢  正交试验
英文关键词:CoP  electroplating  sodium borohydride  hydrogen production  orthogonal experiment
基金项目:河北省自然科学基金(B2017408042);河北省教育厅资助科研项目(BJ2016044);廊坊师范学院科学研究项目(LSLB201701)
作者单位
安然 建筑材料工业技术监督研究中心,北京 100024 
魏磊 廊坊师范学院 化学与材料科学学院,河北 廊坊 065000 
李怡莹 廊坊师范学院 化学与材料科学学院,河北 廊坊 065000 
高静 廊坊师范学院 化学与材料科学学院,河北 廊坊 065000 
AuthorInstitution
AN Ran Building Materials Industry and Technical Supervision Research Center, Beijing 100024, China 
WEI Lei School of Chemistry and Material Science, Langfang Teachers University, Langfang 065000, China 
LI Yi-ying School of Chemistry and Material Science, Langfang Teachers University, Langfang 065000, China 
GAO Jing School of Chemistry and Material Science, Langfang Teachers University, Langfang 065000, China 
摘要点击次数:
全文下载次数:
中文摘要:
      目的 考察电镀条件对CoP镀层催化硼氢化钠水解产氢性能的影响规律。方法 通过电镀法在铜片表面沉积CoP非晶催化剂,并用于催化硼氢化钠水解制氢。催化剂微观形貌和元素组成分别由场发射扫描电子显微镜(FE-SEM)和能谱仪(EDS)进行表征。通过正交试验确定沉积时间、沉积温度、电流密度对催化剂活性的影响等级。同时,考察了NaBH4浓度、反应温度和循环使用对催化剂性能的影响。结果 FE-SEM和EDS分析表明,CoP镀层由直径200 nm左右的晶粒堆积而成,Co与P的原子比为3.6:1。正交实验结果表明,沉积时间对催化剂活性的影响程度最大,之后依次为沉积温度和电流密度。当沉积温度、时间、电流密度分别为20 ℃、1 min、5.56 A/dm2时,所制备的催化剂活性最高。30 ℃下,6%NaBH4+2%NaOH体系中,氢气的生成速率为2750 mL/(min•g),反应表观活化能为41.2 kJ/mol,循环使用4次后,催化剂活性降低64%。结论 采用电镀法成功制备了CoP/Cu催化剂,其催化硼氢化钠水解产氢性能优异。电镀条件中,沉积时间是影响催化剂活性的首要因素,其次为沉积温度和电流密度。
英文摘要:
      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 concentration, 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 successfully prepared in the method of electroplating. Among different electroplating conditions, deposition time is the primary factor, followed by deposition temperature and current density.
查看全文  查看/发表评论  下载PDF阅读器
关闭

关于我们 | 联系我们 | 投诉建议 | 隐私保护 | 用户协议

您是第19513831位访问者    渝ICP备15012534号-3

版权所有:《表面技术》编辑部 2014 surface-techj.com, All Rights Reserved

邮编:400039 电话:023-68792193传真:023-68792396 Email: bmjs@surface-techj.com

渝公网安备 50010702501715号