TiO_2对染料废水吸附强化及选择性去除研究
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摘要
以钛酸四丁酯、无水乙醇、水、硫酸为原料,采用水热法合成TiO_2,并以活性黄+碱性品红染料混合废水为目标去除物,考察TiO_2和经硫酸修饰后的H_2SO_4-TiO_2对目标污染物的吸附性能及选择性。对材料进行了表征,结果表明,经硫酸修饰的TiO_2对活性黄、碱性品红染料的吸附得到明显强化,分别是纯TiO_2对活性黄、碱性品红染料饱和吸附量的4.893 4、1.203 7倍;在此混合废水中,H_2SO_4-TiO_2对活性黄染料去除表现出明显的选择性。
TiO_2 has been synthesized by hydrothermal meth od,using Ti(OC_4H_9)_4,C_2H_5OH,H_2O and H_2SO_4 as raw materials. Taking the dyestuff mixed wastewater reactive yellow X-R + basic fuchsine as target substances to be re-moved,the effects of TiO_2 before and after modified by H_2SO_4(H_2SO_4-TiO_2) on the adsorption capability and selectivity for the target pollutants have been investigated,and the materials characterized. The results show that the adsorption effects of H_2SO_4-TiO_2 on dyestuff reactive yellow X-R and basic fuchsine are enhanced significantly. Its saturated adsorption capacities for dyestuff reactive yellow X-R and basic fuchsine are 4.893 4 times and 1.203 7 times,respectively,of pure TiO_2. In the mixed wastewater,the removal of dyestuff reactive yellow X-R by H_2SO_4-TiO_2 has obvious selectivity.
TiO_2 has been synthesized by hydrothermal meth od,using Ti(OC_4H_9)_4,C_2H_5OH,H_2O and H_2SO_4 as raw materials. Taking the dyestuff mixed wastewater reactive yellow X-R + basic fuchsine as target substances to be re-moved,the effects of TiO_2 before and after modified by H_2SO_4(H_2SO_4-TiO_2) on the adsorption capability and selectivity for the target pollutants have been investigated,and the materials characterized. The results show that the adsorption effects of H_2SO_4-TiO_2 on dyestuff reactive yellow X-R and basic fuchsine are enhanced significantly. Its saturated adsorption capacities for dyestuff reactive yellow X-R and basic fuchsine are 4.893 4 times and 1.203 7 times,respectively,of pure TiO_2. In the mixed wastewater,the removal of dyestuff reactive yellow X-R by H_2SO_4-TiO_2 has obvious selectivity.
引文
[1]朱虹,孙杰,李剑超.印染废水处理技术[M].北京:中国纺织出版社,2004:16.
[2]王楠,朱丽华.纳米TiO2表面改性及光催化降解典型有毒污染物研究[M].北京:知识产权出版社,2015:37.
[3]刘杰,汪恂,朱雷,等.钆、硫共掺杂TiO2光催化处理染料废水的研究[J].工业水处理,2015,35(7):27-30.
[4] Bach U,Lupo D,Comte P,et al. Solid-state dye-sensitized mesoporous TiO2solar cells with high photon-to-electron conversion efficiencies[J]. Nature,1998,395(6702):583-585.
[5] Murakami Y,Kenji E,Nosaka A Y,et al. Direct detection of OH radicals diffused to the gas phase from the UV-irradiated photocatalytic TiO2surfaces by means of laser-induced fluorescence spectroscopy[J]. Journal of Physical Chemistry B,2006,110(34):16808-16811.
[6] Riegel G,Bolton J R. Photocatalytic efficiency variability in TiO2particles[J]. Journal of Physical Chemistry,1995,99(12):4215-4224.
[7] Centi G,Perathoner S,Gross S,et al. Science and technology roadmap on catalysis for Europe(2016)[EB/OL].[2016-07-29]. http:∥www.euchems.eu/roadmap-on-catalysis-for-europe.
[8] Guillard C,Lachheb H,Houas A,et al. Influence of chemical structure of dyes,of pH and of inorganic salts on their photocatalytic degradation by TiO2comparison of the efficiency of powder and supported TiO2[J]. Journal of Photochemistry and Photobiology A:Chemistry,2003,158(1):27-36.
[9]谢函芮,吴宏海,管玉峰,等.羟基铁聚合阳离子插层蒙脱石对盐酸四环素的吸附特性研究[J].岩石矿物学杂志,2015,34(6):873-879.
[10] Yan Fachun,Wang Xun. Treatment of dye wastewater using hydrothermally prepared nano-TiO2under natural light[J]. Journal of Inorganic&Organometallic Polymers&Materials,2016,26(1):1-5.
[11]晏发春,汪恂,朱雷,等.水热法制备纳米TiO2处理染料废水实验研究[J].水处理技术,2016,42(2):27-29.
[12] Kormann C,Bahnemann D W,Hoffmann M R. Photolysis of chloroform and other organic molecules in aqueous titanium dioxide suspensions[J]. Environmental Science&Technology,1991,25(3):494-500.
[13]伍斌,郑毅,蔡忠刚,等. SO42-/TiO2光催化降解苯酚[J].环境工程学报,2012,6(6):1880-1884.
[14] Thommes M,Kaneko K,Neimark A V,et al. Physisorption of gases,with special reference to the evaluation of surface area and pore size distribution(IUPAC Technical Report)[J]. Pure&Applied Chemistry,2015,87(1):25-25.
[15]王玉萍,曹金丽,彭盘英. S掺杂形式对TiO2基光催化剂结构和性能的影响[J].无机化学学报,2009,25(11):2010-2015.
[16]翁诗甫.傅里叶变换红外光谱分析[M].北京:化学工业出版社,2010:423-434.
[17]颜秀茹,白天,韩芳,等. SO42-/TiO2-SiO2的制备及对甲基橙的光催化降解[J].无机化学学报,2003,19(10):1125-1128.
[2]王楠,朱丽华.纳米TiO2表面改性及光催化降解典型有毒污染物研究[M].北京:知识产权出版社,2015:37.
[3]刘杰,汪恂,朱雷,等.钆、硫共掺杂TiO2光催化处理染料废水的研究[J].工业水处理,2015,35(7):27-30.
[4] Bach U,Lupo D,Comte P,et al. Solid-state dye-sensitized mesoporous TiO2solar cells with high photon-to-electron conversion efficiencies[J]. Nature,1998,395(6702):583-585.
[5] Murakami Y,Kenji E,Nosaka A Y,et al. Direct detection of OH radicals diffused to the gas phase from the UV-irradiated photocatalytic TiO2surfaces by means of laser-induced fluorescence spectroscopy[J]. Journal of Physical Chemistry B,2006,110(34):16808-16811.
[6] Riegel G,Bolton J R. Photocatalytic efficiency variability in TiO2particles[J]. Journal of Physical Chemistry,1995,99(12):4215-4224.
[7] Centi G,Perathoner S,Gross S,et al. Science and technology roadmap on catalysis for Europe(2016)[EB/OL].[2016-07-29]. http:∥www.euchems.eu/roadmap-on-catalysis-for-europe.
[8] Guillard C,Lachheb H,Houas A,et al. Influence of chemical structure of dyes,of pH and of inorganic salts on their photocatalytic degradation by TiO2comparison of the efficiency of powder and supported TiO2[J]. Journal of Photochemistry and Photobiology A:Chemistry,2003,158(1):27-36.
[9]谢函芮,吴宏海,管玉峰,等.羟基铁聚合阳离子插层蒙脱石对盐酸四环素的吸附特性研究[J].岩石矿物学杂志,2015,34(6):873-879.
[10] Yan Fachun,Wang Xun. Treatment of dye wastewater using hydrothermally prepared nano-TiO2under natural light[J]. Journal of Inorganic&Organometallic Polymers&Materials,2016,26(1):1-5.
[11]晏发春,汪恂,朱雷,等.水热法制备纳米TiO2处理染料废水实验研究[J].水处理技术,2016,42(2):27-29.
[12] Kormann C,Bahnemann D W,Hoffmann M R. Photolysis of chloroform and other organic molecules in aqueous titanium dioxide suspensions[J]. Environmental Science&Technology,1991,25(3):494-500.
[13]伍斌,郑毅,蔡忠刚,等. SO42-/TiO2光催化降解苯酚[J].环境工程学报,2012,6(6):1880-1884.
[14] Thommes M,Kaneko K,Neimark A V,et al. Physisorption of gases,with special reference to the evaluation of surface area and pore size distribution(IUPAC Technical Report)[J]. Pure&Applied Chemistry,2015,87(1):25-25.
[15]王玉萍,曹金丽,彭盘英. S掺杂形式对TiO2基光催化剂结构和性能的影响[J].无机化学学报,2009,25(11):2010-2015.
[16]翁诗甫.傅里叶变换红外光谱分析[M].北京:化学工业出版社,2010:423-434.
[17]颜秀茹,白天,韩芳,等. SO42-/TiO2-SiO2的制备及对甲基橙的光催化降解[J].无机化学学报,2003,19(10):1125-1128.