改性钛基二氧化铅电极制备及性能
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摘要
为提高Ti/Pb O2电极的导电性能和电催化活性,通过涂覆法在钛板基体上裹覆萘酚-碳纳米管膜作为底层并通过电沉积法制备Pb O2改性电极;通过单因素变量法,研究了p H、电流强度、电解时间等因素对该电极电催化氧化苯酚模拟废水性能影响,并进行动力学分析。结果表明:改性电极导电性能增强,在最佳条件p H=6,I=1 A下降解1 h,苯酚去除率达到46. 2%,但反应产热,电能消耗增加;反应符合一级动力学方程。
In order to improve the electrical conductivity and electrocatalytic activity of the Ti/PbO_2 electrode,the Ti substrates were electrodeposited with a bottom layer of the nafion-CNTs( carbon nanotubes) film. Then,doped PbO_2 films were electrodeposited on above substrates. The effects of pH,current intensity and electrolysis time on the degredation of phenol simulated wastewater were investigated. Furthermore,the kinetic analysis was carried out. The results showed that the conductivity of the modified electrode was enhanced and the degradation effiiency could be 46. 2% as the pH solution of 6,current of 1 ampere and worked for one hour. The electric energy consumption increasesd along with the heat of reaction. The reaction accorded with the first-order kinetic equation.
In order to improve the electrical conductivity and electrocatalytic activity of the Ti/PbO_2 electrode,the Ti substrates were electrodeposited with a bottom layer of the nafion-CNTs( carbon nanotubes) film. Then,doped PbO_2 films were electrodeposited on above substrates. The effects of pH,current intensity and electrolysis time on the degredation of phenol simulated wastewater were investigated. Furthermore,the kinetic analysis was carried out. The results showed that the conductivity of the modified electrode was enhanced and the degradation effiiency could be 46. 2% as the pH solution of 6,current of 1 ampere and worked for one hour. The electric energy consumption increasesd along with the heat of reaction. The reaction accorded with the first-order kinetic equation.
引文
1程爱华,邵新岚,王倩.活性炭活化过硫酸盐处理含酚废水的实验研究[J].科学技术与工程,2017,17(35):347-351Cheng Aihua,Shao Xinlan,Wang Qian. Remove of phenol by activated carbon catalyzeper-sulfate system[J]. Science Technology and Engineering,2017,17(35):347-351
2 周楠楠,张威,赵金龙,等. DSA阳极电催化氧化技术及处理苯酚废水的研究进展[J].现代化工,2017,37(6):29-32Zhou Nannan,Zhang Wei,Zhao Jinlong,et al. DSA anode electric catalytic oxidation technology and research progress of phenol containing wastewater treatment[J]. Modern Chemical Industry,2017,37(6):29-32
3 王鸿辉,马明洁,冯婕,等.钕掺杂二氧化铅复合阳极的电化学性能研究[J].电化学,2018,24(4):367-374Wang Honghui,Ma Mingjie,Feng Jie,et al. Electrochemical performances of neodymium doped lead dioxide composite anode[J].Journal of Electrochemistry,2018,24(4):367-374
4 王雅琼,童宏扬,许文林.硫酸溶液中Ti/SnO2+Sb2O3/PbO2阳极在电解过程中的结构变化及失活行为[J].化工学报,2004(9):1560-1563Wang Yaqiong,Tong Hongyang,Xu Wenlin. Structure changeand failure behavior of Ti/SnO2+Sb2O3/PbO2anodes during electrolysis process in H2SO4solution[J]. Journal of Chemical Industry and Engineering(China),2004(9):1560-1563
5 那宝双,朱永春,辛士刚.多壁碳纳米管负载镧掺杂氢氧化铁纳米胶粒修饰碳纤维簇电极对CO2的光电催化还原研究[J].科学技术与工程,2017,17(7):10-19Na Baoshuang,Zhu Yongchun,Xin Shigang. The photoelectric catalytic reduction behavior of multi-walled carbon nanotubes supported colloidal ferric hydroxide nanoparticles and lanthanum doping which modified carbon fiber clusters electrode with CO2[J]. Science Technology and Engineering,2017,17(7):10-19
6 Simonov A S,Kondratenko M S,Elmanovich I V,et al. Modification of nafion with silica nanoparticles in supercritical carbon dioxide for electrochemical applications[J]. Journal of Membrane Science,2018,564:106-114
7 刘淼,郭新,张玮,等.一种钛基掺镧二氧化铅电极及其制备方法:CN107902729A[P]. 2018-04-13Liu Miao,Guo Xin,Zhang Wei,et al. Titanium-based lanthanumdoped lead dioxide electrode and preparation method:CN107902729A[P]. 2018-04-13
8 乔旭昌,郝苓汀,郭超恒,等.含酚废水电化学处理动力学研究[J].辽宁化工,2011,40(9):923-925,928Qiao Xuchang,Hao Lingting,Guo Chaoheng,et al. Chemical kinetics study on phenolic wastewater treatment by electro-catalysis oxidation[J]. Liaoning Chemical Industry,2011,40(9):923-925,928
9 Duan Xiaoyue,Ma Fang,Yuan Zhongxin,et al. Comparative studies on the electro-catalytic oxidation performance of surfactant-carbon nanotube-modified PbO2electrodes[J]. Journal of Electroanalytical Chemistry,2012,667:90-100
10 何易,陈阵,朱薇,等.多壁碳纳米管对钛基二氧化铅电极电化学性能的影响[J].材料保护,2017,50(11):14-17,26He Yi,Chen Zhen,Zhu Wei,et al. Effect of multi-walled carbon nanotubes on electric performance of titanium-based lead dioxide electrodes[J]. Materials Protection,2017,50(11):14-17,26
11 孙南南,谢实涛,李凯,等. RuO2-Ir O2-SnO2/Ti阳极电催化氧化苯酚的研究[J].环境污染与防治,2015,37(2):38-41Sun Nannan,Xie Shitao,Li Kai,et al. Electro-catalyticoxidation of phenol with RuO2-Ir O2-SnO2/Ti anode[J]. Environmental Pollution&Control,2015,37(2):38-41
2 周楠楠,张威,赵金龙,等. DSA阳极电催化氧化技术及处理苯酚废水的研究进展[J].现代化工,2017,37(6):29-32Zhou Nannan,Zhang Wei,Zhao Jinlong,et al. DSA anode electric catalytic oxidation technology and research progress of phenol containing wastewater treatment[J]. Modern Chemical Industry,2017,37(6):29-32
3 王鸿辉,马明洁,冯婕,等.钕掺杂二氧化铅复合阳极的电化学性能研究[J].电化学,2018,24(4):367-374Wang Honghui,Ma Mingjie,Feng Jie,et al. Electrochemical performances of neodymium doped lead dioxide composite anode[J].Journal of Electrochemistry,2018,24(4):367-374
4 王雅琼,童宏扬,许文林.硫酸溶液中Ti/SnO2+Sb2O3/PbO2阳极在电解过程中的结构变化及失活行为[J].化工学报,2004(9):1560-1563Wang Yaqiong,Tong Hongyang,Xu Wenlin. Structure changeand failure behavior of Ti/SnO2+Sb2O3/PbO2anodes during electrolysis process in H2SO4solution[J]. Journal of Chemical Industry and Engineering(China),2004(9):1560-1563
5 那宝双,朱永春,辛士刚.多壁碳纳米管负载镧掺杂氢氧化铁纳米胶粒修饰碳纤维簇电极对CO2的光电催化还原研究[J].科学技术与工程,2017,17(7):10-19Na Baoshuang,Zhu Yongchun,Xin Shigang. The photoelectric catalytic reduction behavior of multi-walled carbon nanotubes supported colloidal ferric hydroxide nanoparticles and lanthanum doping which modified carbon fiber clusters electrode with CO2[J]. Science Technology and Engineering,2017,17(7):10-19
6 Simonov A S,Kondratenko M S,Elmanovich I V,et al. Modification of nafion with silica nanoparticles in supercritical carbon dioxide for electrochemical applications[J]. Journal of Membrane Science,2018,564:106-114
7 刘淼,郭新,张玮,等.一种钛基掺镧二氧化铅电极及其制备方法:CN107902729A[P]. 2018-04-13Liu Miao,Guo Xin,Zhang Wei,et al. Titanium-based lanthanumdoped lead dioxide electrode and preparation method:CN107902729A[P]. 2018-04-13
8 乔旭昌,郝苓汀,郭超恒,等.含酚废水电化学处理动力学研究[J].辽宁化工,2011,40(9):923-925,928Qiao Xuchang,Hao Lingting,Guo Chaoheng,et al. Chemical kinetics study on phenolic wastewater treatment by electro-catalysis oxidation[J]. Liaoning Chemical Industry,2011,40(9):923-925,928
9 Duan Xiaoyue,Ma Fang,Yuan Zhongxin,et al. Comparative studies on the electro-catalytic oxidation performance of surfactant-carbon nanotube-modified PbO2electrodes[J]. Journal of Electroanalytical Chemistry,2012,667:90-100
10 何易,陈阵,朱薇,等.多壁碳纳米管对钛基二氧化铅电极电化学性能的影响[J].材料保护,2017,50(11):14-17,26He Yi,Chen Zhen,Zhu Wei,et al. Effect of multi-walled carbon nanotubes on electric performance of titanium-based lead dioxide electrodes[J]. Materials Protection,2017,50(11):14-17,26
11 孙南南,谢实涛,李凯,等. RuO2-Ir O2-SnO2/Ti阳极电催化氧化苯酚的研究[J].环境污染与防治,2015,37(2):38-41Sun Nannan,Xie Shitao,Li Kai,et al. Electro-catalyticoxidation of phenol with RuO2-Ir O2-SnO2/Ti anode[J]. Environmental Pollution&Control,2015,37(2):38-41