利用扫描电镜、X射线衍射、紫外-可见漫反射等技术对采用溶胶-凝胶法制备的氮掺杂纳米TiO_2负载活性炭纤维(N-TiO_2/ACF)光催化材料进行了表征分析。以真丝绸染色废水为目标降解物,研究了光催化材料的光催化性能。研究表明:N-TiO_2/ACF...利用扫描电镜、X射线衍射、紫外-可见漫反射等技术对采用溶胶-凝胶法制备的氮掺杂纳米TiO_2负载活性炭纤维(N-TiO_2/ACF)光催化材料进行了表征分析。以真丝绸染色废水为目标降解物,研究了光催化材料的光催化性能。研究表明:N-TiO_2/ACF光催化材料表面的N-TiO_2呈锐钛矿相,粒径约为15.3 nm,其光谱响应范围由紫外光区拓展至可见光区,吸收边带达603 nm;金卤灯照射下反应180 min,0.77 g N-TiO_2/ACF对200 m L真丝绸染色废水降解率达97.2%,2.31 g的N-TiO_2/ACF对200 mL真丝绸染色废水COD去除率达80.6%;N-TiO_2/ACF具有良好的重复使用性能。展开更多
超级电容器作为一种绿色的储能装置,对实现“可持续发展”、“绿色中国”的战略目标具有重要意义。然而,对于超级电容器而言,电极材料性能的优劣决定着超级电容器的容量的高低以及循环寿命的长短。在本研究中,根据镍钴硫化物与氢氧化物...超级电容器作为一种绿色的储能装置,对实现“可持续发展”、“绿色中国”的战略目标具有重要意义。然而,对于超级电容器而言,电极材料性能的优劣决定着超级电容器的容量的高低以及循环寿命的长短。在本研究中,根据镍钴硫化物与氢氧化物的溶解度差异,采用绿色环保的室温硫化法(room temperature sulfide,RTS),通过控制反应条件,制备不同形貌的以活性炭纤维(ACF)为核,NiCo_(2)S_(4)为壳的超级电容器电极材料(ACF/NiCo_(2)S_(4)),进行了一系列电化学测试。结果表明,孔隙丰富和蜂窝状材料表现出更大的比电容、更小的阻抗、更稳定的倍率性能。当电流密度为1 A/g时,其比电容值高达1682 F/g,是一种具有广阔应用前景的电极材料。展开更多
The selective catalytic reduction(SCR) of NOx using MnOx and CeO2 supported on viscose-based active carbon fibers(ACF) at 120 ℃～270 ℃ relatively lower than the temperature when using V2O5/TiO2-anatase catalyst was ...The selective catalytic reduction(SCR) of NOx using MnOx and CeO2 supported on viscose-based active carbon fibers(ACF) at 120 ℃～270 ℃ relatively lower than the temperature when using V2O5/TiO2-anatase catalyst was studied.As a result,CeO2/ACF shows a better catalysis than MNOx/ACF,which is not affected by the reaction temperature. NO conversion of 85% is reached with the 10%-CeO2/ACF catalyst at the whole temperature window.Furthermore,a series of MnOx-CeO2/ACF composite catalysts were studied.The results show that the loading method of catalyst affects its activity.展开更多
文摘利用扫描电镜、X射线衍射、紫外-可见漫反射等技术对采用溶胶-凝胶法制备的氮掺杂纳米TiO_2负载活性炭纤维(N-TiO_2/ACF)光催化材料进行了表征分析。以真丝绸染色废水为目标降解物,研究了光催化材料的光催化性能。研究表明:N-TiO_2/ACF光催化材料表面的N-TiO_2呈锐钛矿相,粒径约为15.3 nm,其光谱响应范围由紫外光区拓展至可见光区,吸收边带达603 nm;金卤灯照射下反应180 min,0.77 g N-TiO_2/ACF对200 m L真丝绸染色废水降解率达97.2%,2.31 g的N-TiO_2/ACF对200 mL真丝绸染色废水COD去除率达80.6%;N-TiO_2/ACF具有良好的重复使用性能。
文摘超级电容器作为一种绿色的储能装置,对实现“可持续发展”、“绿色中国”的战略目标具有重要意义。然而,对于超级电容器而言,电极材料性能的优劣决定着超级电容器的容量的高低以及循环寿命的长短。在本研究中,根据镍钴硫化物与氢氧化物的溶解度差异,采用绿色环保的室温硫化法(room temperature sulfide,RTS),通过控制反应条件,制备不同形貌的以活性炭纤维(ACF)为核,NiCo_(2)S_(4)为壳的超级电容器电极材料(ACF/NiCo_(2)S_(4)),进行了一系列电化学测试。结果表明,孔隙丰富和蜂窝状材料表现出更大的比电容、更小的阻抗、更稳定的倍率性能。当电流密度为1 A/g时,其比电容值高达1682 F/g,是一种具有广阔应用前景的电极材料。
文摘The selective catalytic reduction(SCR) of NOx using MnOx and CeO2 supported on viscose-based active carbon fibers(ACF) at 120 ℃～270 ℃ relatively lower than the temperature when using V2O5/TiO2-anatase catalyst was studied.As a result,CeO2/ACF shows a better catalysis than MNOx/ACF,which is not affected by the reaction temperature. NO conversion of 85% is reached with the 10%-CeO2/ACF catalyst at the whole temperature window.Furthermore,a series of MnOx-CeO2/ACF composite catalysts were studied.The results show that the loading method of catalyst affects its activity.
基金supported by the National Natural Science Foundation of China(0976050)Program for New Century Excellent Talents in University,China(07-0457)National Key Technology Research and Development Program of Tianjin,China(09ZCKFSH01900)~~
