C-TiO_2/Ti-Cu_2O/Cu光催化燃料电池的性能  

Performance of C-TiO_2/Ti-Cu_2O/Cu photocatalytic fuel cell

作　　者：杨开 徐云兰[1] 钟登杰[1] YANG Kai;XU Yunlan;ZHONG Dengjie(School of Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, Chin)

机构地区：[1]重庆理工大学化学化工学院,重庆400054

出　　处：《环境化学》2018年第1期108-114,共7页Environmental Chemistry

基　　金：重庆理工大学研究生创新基金(YCX2016243)资助~~

摘　　要：采用溶胶-凝胶法制备了C-TiO_2/Ti膜电极,其X-射线衍射(XRD)结果表明,C掺杂有效抑制了TiO_2催化剂由锐钛矿相向金红石相的转变.以C-TiO_2/Ti作为光催化燃料电池(PFC)的阳极,Cu_2O/Cu为阴极,考察了C-TiO_2/Ti的制备条件和染料初始浓度及p H值对PFC性能的影响,得到PFC的最佳性能:短路电流密度为0.084 m A·cm^(-2),开路电压为0.385 V,最大输出功率密度为5.91×10^(-3)m W·cm^(-2),填充因子(FF)为0.18,光催化处理20 mg·L^(-1)罗丹明B染料废水90 min,脱色率达到91.7%.处理过程中罗丹明B溶液的紫外-可见分光光谱表明,可见光区最大吸收波长略有蓝移,可见和紫外光区的光吸收均下降,说明分子遭到了破坏,并发生了矿化.C-doped TiO2 / Ti thin film electrodes were prepared by sol-gel method.The results of XRD spectroscopy indicated that carbon doping effectively inhibited the change of TiO2 crystal phase from anatase to rutile. The influences of preparation conditions,dye initial concentration and pH on the performance of the photocatalytic fuel cell （ PFC）,which used the C-TiO2 / Ti as photoanode and Cu2 O/ Cu as cathode, were investigated. The optimum performance of PFC： short-circuit current density was 0.084 mA·cm-2 ,open-circuit voltage was 0.385 V,maximum output power density was 5.91×10-3 mW·cm-2 ,fill factor （ FF） was 0.18,and the decolorization efficiency of 20 mg·L-1 Rhodamine B for 90 min treatment was 91.7 ％.The result of the UV-Vis abosrption spectroscopic measurement of Rhodamine B solution during the treatment process showed that the maximum absorption wavelength blue shifted slightly in the visible region,and the absorbance decreased both in the visible and ultraviolet region, indicating the Rhodamine B molecules were decomposed.

关 键 词：光催化燃料电池 C-TiO2/Ti 可见光 罗丹明B 

分 类 号：O643.36[理学—物理化学] TM911.4[理学—化学]