负载纳米TiO_2薄膜光催化还原氮气合成氨的研究  

Study of photocatalytic reduction nitrogen for synthesis of ammonia using load nanometer titanium dioxid films

作　　者：张胜寒[1] 冯玲[1] 连佳[1] 郭彦磊[1] 

机构地区：[1]华北电力大学环境科学与工程学院,河北保定071003

出　　处：《山西化工》2010年第5期1-4,共4页Shanxi Chemical Industry

摘　　要：对负载纳米TiO2薄膜光催化还原氮气合成氨进行验证,分别讨论了pH值、光照、初始浓度、不同载气和催化剂用量等因素对溶液中氨氮浓度变化的影响,并对实验结果作出初步解释。对自制的TiO2/Ti光电极绘制了Mott-Schotty曲线,初步研究了光电极的半导体性质,计算了其载流子浓度ND、平带电位Фfb及能带弯曲量VB。研究了当下利用TiO2光催化还原氮气合成氨方法的可行性,对TiO2光催化还原性的利用提出相应的意见及建议。Load nanometer titanium dioxide films was used to verify the experiment of photo catalytic reduction nitrogen to synthesis ammonia,and the effects of pH,illumination,initial concentration,different carrier gas and the volume of catalyst were investigated.The carrier concentration ND,flat band Фfb and the amount of band bending VB of TiO2/Ti photoelectrode were calculated using Mott-Schotty curve.The results show that TiO2 photocatalytic reduction nitrogen is a feasible method for synthesis of ammonia,which is in agreement with the previous works.

关 键 词：负载TIO2 光催化 合成氨 半导体 M-S曲线 

分 类 号：TQ426.8[化学工程] TQ113.2