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Ti/SnO2-Sb-Ni阳极电化学氧化系统回收S单质并同步实现含硫废水处理的研究 认领 引用 被引量：2
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作者 肖丹 孙怡 成少安 《应用化工》 CAS CSCD 北大核心 2020年第8期1871-1874,1887,共4页
采用电化学氧化处理煤化工含硫废水并同步回收单质S。Ni掺杂能够有效提高Ti/SnO2-Sb阳极的电化学活性,在电流密度40 mA/cm^2时,经过48 h的电解,COD由51100 mg/L降低至6880 mg/L,去除率为86.54%,色度(ADMI)去除88.50%。COD的降解符合一... 采用电化学氧化处理煤化工含硫废水并同步回收单质S。Ni掺杂能够有效提高Ti/SnO2-Sb阳极的电化学活性,在电流密度40 mA/cm^2时,经过48 h的电解,COD由51100 mg/L降低至6880 mg/L,去除率为86.54%,色度(ADMI)去除88.50%。COD的降解符合一阶动力学,动力学常数K1为0.0395 h^-1,电流效率和能耗分别为38.58%和35.72 kWh/kg COD,同时回收S单质4.55 g/L。回收的S单质系废水中含硫有机物在阴极被还原后又在阳极被氧化而生成,表明电化学氧化系统能够通过调控阴阳极,将含硫有机物回收为S单质,并同步实现废水的处理。 展开更多
关键词 含硫废水 Ti/SnO2-Sb-Ni阳极 电化学氧化 硫回收
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Ti/SnO2-Sb-Ni阳极与空气阴极电化学氧化系统处理印染废水的研究 认领 引用 被引量：1
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作者 肖丹 孙怡 成少安 《能源工程》 2020年第5期71-75,83,共5页
研究了采用Ti/SnO2-Sb-Ni阳极与空气阴极电化学氧化系统处理实际印染废水,分析了电极间距的影响。此体系能够有效处理印染废水,快速降低废水的化学需氧量(COD)并实现废水的完全脱色。在电流密度为10 mA/cm^2时经过30min的电解可实现废水... 研究了采用Ti/SnO2-Sb-Ni阳极与空气阴极电化学氧化系统处理实际印染废水,分析了电极间距的影响。此体系能够有效处理印染废水,快速降低废水的化学需氧量(COD)并实现废水的完全脱色。在电流密度为10 mA/cm^2时经过30min的电解可实现废水的COD由121.2 mg/L降低至低于50 mg/L,COD的去除符合一阶动力学,其动力学常数K1为0.0321 min^-1,电流效率为46.52%,能耗为5.92 kWh/m^3。改变电极间距对印染废水COD的去除并没有显著的影响,但能耗水平与电极间距呈现线性相关,这表明可通过减少电极间距来优化设备,从而降低废水处理能耗。 展开更多
关键词 Ti/SnO2-Sb-Ni阳极 电化学氧化 印染废水 电极间距
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Synthesis and electrochemical properties of Zn_2SnO_4 and Zn_2Sn0.8Ti0.2O_4/C 认领 引用
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作者 袁万颂 田彦文 +1 位作者 刘丽娟 李建中 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第4期858-864,共7页
Compound Zn2Sn0.8Ti0.2O4 was synthesized by a hydrothermal method in which SnCl4-5H2O,TiCl4,ZnCl2 and N2H4-H2O were used as reactants.The composite Zn2Sn0.8Ti0.2O4/C was then prepared through a carbothermic reduction ... Compound Zn2Sn0.8Ti0.2O4 was synthesized by a hydrothermal method in which SnCl4-5H2O,TiCl4,ZnCl2 and N2H4-H2O were used as reactants.The composite Zn2Sn0.8Ti0.2O4/C was then prepared through a carbothermic reduction process using the as-prepared Zn2Sn0.8Ti0.2O4 and glucose as reactants.The structure,morphology and electrochemical properties of the as-prepared products were investigated by XRD,XPS,TEM and electrochemical measurements.In addition,electrochemical Li insertion/extraction in composite Zn2Sn0.8Ti0.2O4/C were examined by ex situ XRD and SEM.The first discharge capacity of Zn2SnO4 is about 1670.8 mA-h/g,with a capacity retain of 342.7 mA-h/g in the 40th cycle at a constant current density of 100 mA/g in the voltage range of 0.05-3.0 V.Comparing with the Zn2SnO4,some improved electrochemical properties are obtained for Zn2Sn0.8Ti0.2O4,Zn2SnO4/C and Zn2Sn0.8Ti0.2O4/C.The composite Zn2Sn0.8Ti0.2O4/C shows the best electrochemical properties,and its first discharge capacity is about 1530.0 mA-h/g,with a capacity retain of 479.1 mA-h/g the 100th cycle. 展开更多
关键词 Zn2SnO4 Zn2Sn0.8Ti0.2O4/C titanium substitution lithium ion batteries anode materials
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Electrocatalysis of Oxygen Evolution Reaction on Ti/SnO_2+RuO_2+MnO_2/MnO_2 Electrode in Sulfuric Acid Solution 认领 引用 被引量：5
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作者 LIANG Zhen-hai FAN Cai-mei SUN Yan-ping 《Chemical Research in Chinese Universities》 SCIE EI CAS 2001年第3期287-292,共6页
The Ti-Supported MnO_2 electrode was modified by introducing SnO_2+RuO_2+MnO_2 as an intermediate layer into the Ti/MnO_2 interface. The anodic polarization curves were measured at various temperatures ranging from 30... The Ti-Supported MnO_2 electrode was modified by introducing SnO_2+RuO_2+MnO_2 as an intermediate layer into the Ti/MnO_2 interface. The anodic polarization curves were measured at various temperatures ranging from 30 to 80℃ and the activation energy for the oxygen evolution reaction was evaluated. The experimental activation energy increased linearly with increasing the overpotential. The activation energy at the equilibrium potential was linearly correlated with the difference between the crystal field stabilization energies of Mn4+ at initial state and Mn4+ at transition state. The electrocatalysis characteristics of the anode were discussed by means of the mechanism of the substitution reaction of the ligand(S_N1 and S_N2) and molecular orbital theory. The results show that the anode has better electrocatalystic characteristics. 展开更多
关键词 Ti/SnO2+RuO2+MnO2/MnO2 anode Electroeatalysis Activation energy Crystal field theory Molecular Orbital theory
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