化工新型材料

化工新型材料 ›› 2018, Vol. 46 ›› Issue (12) : 121-124.

新材料与新技术

还原氧化石墨烯/TiO₂纳米管复合材料的制备及其光电催化还原CO₂的研究

作者信息 +

Study on preparation of RGO/TiO₂ and its application in photoelectrocatalytic reduction for carbon dioxide

Zhou Bo, Wang Yinggang, Cui Xiaowei, Ma Ronghan, Li Xiaochuan

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文章历史 +

Received
2017-08-23
Issue Date	Revised Date
2019-01-07	2017-08-23

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摘要

采用阳极氧化法制备二氧化钛(TiO₂)纳米管,采用改良Hummers氧化法-浓碱法制备还原氧化石墨烯(RGO),采用阳极电化学沉积法制得RGO/TiO₂纳米管复合材料,以复合材料为反应阴极,以铂片(Pt)为反应阳极,光电催化还原二氧化碳(CO₂)为乙醇。并对制得的RGO/TiO₂纳米管复合材料进行了表征。结果证明:采用阳极电化学沉积法施加20V电压反应6h可有效制得RGO/TiO₂纳米管复合材料;以2%(wt.,质量分数)碳酸氢钠(NaHCO₃)水溶液为电解液,在紫外灯照射下施加1.5V电压,反应温度为50℃,反应时间为1h条件下,CO₂被还原为乙醇,产量为185.08nmol/(h·cm²)。

Abstract

Anodic oxidation process was used to make TiO₂ nanotubes,the graphene oxide which was made by improved hummers method was reduced to the reduced graphene oxide under the concentrated alkali condition.RGO/TiO₂ nanotubes composite was synthesized by anodic electrochemical deposition techniques.Carbon dioxide was photoelectrocatalytic reduced to form ethanol with RGO/TiO₂ as cathode and platinum as anode.And the materials were characterized.The results showed that RGO/TiO₂ can be made by anodic electrochemical deposition Technique under 20 volts reaction voltage for 6 hours.2%(wt.)aqueous sodium bicarbonate solution was used as electrolyte,the carbon dioxide was reduced to from ethanol when 1.5 volts reaction voltage for 1 hour under the UV light.With the results of gas chromatography,the production of ethanol was 185.08nmol/(h·cm²).

关键词

TiO₂纳米管 / 氧化还原石墨烯 / 阳极电化学沉积法 / 复合材料 / 乙醇

Key words

TiO₂ nanotube / RGO / anodic electrochemical deposition technique / composite / ethanol

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还原氧化石墨烯/TiO₂纳米管复合材料的制备及其光电催化还原CO₂的研究[J]. 化工新型材料, 2018, 46(12): 121-124 DOI:

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