推广 热搜:   ipc  电镀厂  彩涂  电镀  防腐  研讨会  镀镍  化学镀  封闭 

181603-电解液中Mn2+的浓度对阳极氧化所得二氧化钛纳米管阵列光电响应的影响

   日期:2018-09-20     作者:司玉军,李敏娇,等    浏览:43    评论:0    
核心提示:中文核心期刊,中国科技核心期刊! DOI: 10.19289/j.1004-227x.2018.16.003电解液中Mn2+的浓度对阳极氧化所得二氧化钛纳米管阵列
 

中文核心期刊,中国科技核心期刊!

DOI: 10.19289/j.1004-227x.2018.16.003

电解液中Mn2+的浓度对阳极氧化所得二氧化钛纳米管阵列光电响应的影响

司玉军*,李敏娇,熊中平,文鲜,徐葳(四川理工学院化学与环境工程学院,绿色催化四川省高校重点实验室,四川 自贡 643000)

摘要:在含0.000 ~ 0.015 mol/L Mn2+和0.5%(质量分数)NH4F 的丙三醇−水电解液中对钛片进行阳极氧化,制备了TiO2 纳米管阵列(TNA),以考察同步电解锰掺杂对TNA 光电响应的影响(对应的产物标记为Mn-TNA)。结果表明,锰掺杂减弱了TNA 对紫外光的吸收,而增强了它对可见光的响应。在0.5 V 偏压的作用下,Mn-TNA 对可见光的光电响应与电解液中的Mn2+浓度有关。锰浓度较低时,Mn-TNA 的光电响应因锰的掺杂而得到增强,锰浓度过高则恶化TNA 的光电响应。Mn2+浓度为0.005 mol/L时所得Mn-TNA 具有较好的光电响应。

关键词:二氧化钛纳米管阵列;阳极氧化;锰;掺杂;光电响应

中图分类号:TQ013.1 

文献标志码:A 

文章编号:1004 – 227X (2018) 16 – 0712 – 04

Effect of Mn2+ concentration in electrolyte on photoelectric response of titania nanotube arrays obtained by anodization // SI Yu-jun*, LI Min-jiao, XIONG Zhong-ping, WEN Xian, XU Wei

Abstract: TiO2 nanotube arrays were prepared by anodization of titanium sheet in a glycerol–water electrolyte containing 0.000-0.015 mol/L Mn2+ and 0.5wt.% NH4F. The simultaneous doping of manganese by electrolysis on the photoelectric response of TNA was studied. It is shown that the doping of manganese weakens the absorption to ultraviolet light for TNA but strengthens its absorption to visible light. The photoelectric response under visible light illumination at a bias voltage of 0.5 V for Mn-TNA is related to the concentration of Mn2+ in electrolyte. The photoelectric current is increased for the doping of manganese at a low concentration, but is decreased greatly for too high concentration of Mn2+ in electrolyte. Mn-TNA obtained at a Mn2+ concentration of 0.005 mol/L has the optimal photoelectric response.

Keywords: titania nanotube array; anodization; manganese; doping; photoelectric response

First-author’s address: Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, China

PDF全文下载,请点击   1816003_0712-0715_185939.pdf


 
打赏
 
更多>同类镀涂课堂
0相关评论

推荐图文
推荐镀涂课堂
点击排行
网站首页  |  会员升级  |  关于我们  |  联系方式  |  使用协议  |  版权隐私  |  网站地图  |  排名推广  |  积分换礼  |  RSS订阅  |  违规举报  |  粤ICP备10003697号