The results show that the band gap narrows with the increase of nitrogen doping concentration.
基于密度泛函理论(DFT)框架下的第一性原理平面波超软赝势方法,采用CASTEP软件包,在分析掺氮碳纳米管最可能存在方式并进行结构优化的基础上,对不同掺氮浓度的单壁碳纳米管的电子结构进行了计算,分析了掺杂碳纳米管的能带结构和态密度,结果表明随着掺杂浓度的增加能带间隙呈现减小的趋势。
The first is that nitrogen doping causes band-gap to narrow and make the activity of hole near the valence band weaken.
本文从几篇文献的误解入手,介绍了掺氮二氧化钛(TiO2)具有可见光活性的几种不同观点,在分析后,得出掺氮TiO2具有可见光活性是由于两方面的因素造成的:一是氮的掺杂使TiO2的价带产生变化,这种变化使价带附近的空穴活动性降低、带隙变小;二是掺氮TiO2存在氧空位,并且氧空位在导带边缘,使能带变窄。
Nano TiO 2·nH 2O was prepared as precursor by special process of acid treatment, in which low cost industrial H 2TiO 3·nH 2O was adopted as raw material, and the precursor was modified by nitrogen doping in pipe still heater, then nano TiO 2-X N X powders were obtained.
以廉价的工业偏钛酸为原料 ,采用特殊的酸解工艺制得纳米级水合二氧化钛粉体 ,再利用高温管式炉对前驱体 -TiO2 ·nH2 O进行掺氮 ,制得纳米TiO2 -XNX 粉体 ,研究了不同掺氮气体和反应工艺对TiO2 -XNX 粉体吸光特性、形态结构的影响。
Preparation and spectrum analysis of nitrogen-doped TiO_2 powder;
掺氮TiO_2的制备与光谱分析
The Preparation and Resent Progress of Nitrogen-doped Titanium Dioxide;
掺氮TiO_2的制备与进展
Preparation and characterization of nitrogen-doped TiO_2 nano-powder absorbing visible light;
具有可见光活性的纳米掺氮TiO_2制备和表征
The nitrogen-doping process was analysed from TG-DTA,Fr-IR and XPS results,it indicated that the presence of nitrogen element in the precursor.
以饱和尿素溶液水解沉淀钛酸四丁酯制备水合 TiO_2,再于温度400～700℃的空气气氛下煅烧2h, 制得淡黄色的掺氮 TiO_2光催化剂。
After analysizing photocatalytic reactor structure, this paper uses sol-gel method to prepare nitrogen doped TiO_2 film as the mainly reactor part of visible light response of laminar falling film reactor, observes the hydrophilicity by the contact angle’change, and optim.
以尿素为氮源,采用溶胶-凝胶法,制备掺氮TiO_2薄膜作为反应器的主体反应部分,通过接触角变化,考察其亲水性能,对制备工艺进行优化。
Preparation and characterization of N-doped TiO_2 nanotubes;
氮掺杂二氧化钛纳米管制备与光催化性能
Preparation and properties of visible light responding N-doped TiO_2 nanopowder by hydrothermal synthesis;
可见光响应氮掺杂TiO_2光催化剂的水热法制备与性能
Research on Photocatalysis Degradation Kinetics of N-doped TiO_2 to Methylene Blue
氮掺杂二氧化钛光催化降解亚甲基蓝的动力学研究
The Photodegradation of 2-mercaptobenzothiazole in the sus-pension of nitrogen-doped titania under visible light;
可见光下氮掺杂二氧化钛对巯基苯并噻唑的降解(英文)
Studies on the photocatalytic activity of nitrogen-doped TiO_2 under visible light and sunlight irradiation;
氮掺杂型纳米TiO_2在可见光及太阳光下的光催化性能研究
The Research Progress in Preparation and Visible Light Activity of Nitrogen-Doped TiO_2;
氮掺杂二氧化钛的制备及可见光催化研究进展
Test methods for nitrogen content of nitrogen-doped getter
GB/T6625-1986掺氮吸气剂含氮量测试方法
Oxygen Precipitation Behaviors in Conventional and Nitrogen-codoped Heavily Arsenic-doped Czochralski Silicon;
普通和掺氮的重掺砷直拉硅单晶的氧沉淀行为
Test method for nitrogen-released and gas-absorbed dynamic curve of nitrogen-doped getter
GB/T9506.5-1988掺氮吸气剂释氮吸气动态曲线测试方法
Test method for barium film distribution of nitrogen-doped getter
GB/T9506.6-1988掺氮吸气剂钡膜分布测试方法
Preparation of Nitrogen Doped TiO_2 and Photoactivity under Visible Light Irradiation;
掺氮TiO_2的制备及其光催化性能
Application of Nitrogen-doped Czochralski Silicon in Solar Cell;
掺氮直拉单晶硅在太阳电池中的应用
Study on the Photoluminescence Properties of N-Doped ZnO Films
掺氮ZnO薄膜的光致发光特性研究
Preparation and Properties of Nitrogen-Doped TiO_2 Photocatalyst
掺氮TiO_2光催化剂的制备与性能研究
Growth and Properties of Nitrogen-Doped Diamond-Like Carbon Films
掺氮类金刚石薄膜的制备与性能研究
Photocatalytic degradation of dyeing effluents with nano ZnO/TiO_2 doped N composite powder
掺氮纳米ZnO/TiO_2粉体对印染废水的处理
Research Progress of Visible-Light Responsive Nitrogen-Doped Titanium Dioxide
可见光响应型掺氮TiO_2的研究进展
Preparation of N-doped ZnO Films and its Optical and Electrical Properties
掺氮ZnO薄膜的制备及其光电性能
Optical absorbance of diamond doped with nitrogen and the nitrogen concentration analysis
掺氮金刚石的光学吸收与氮杂质含量的分析研究
Discharge in Nitrogen: Research on N-doping and Synthesis of Nitrides;
氮气放电在氮掺杂及氮化物合成中的应用
To treat or combine with nitrogen or compounds containing nitrogen.
硝化用氮或含氮化合物处理或掺以氮或含氮化合物
Growth and Physical Properties of Nitrogen-doped SnO_2 Thin Films;
氮掺杂SnO_2薄膜生长与物性研究
Modification of Nitrogen Doped TiO_2 and Kinetic Study;
二氧化钛氮掺杂改性及其动力学研究
Study on Titanium Dioxied Thin Film Prepared by Thermal Oxidation with or without Nitrogen;
热氧化生成TiO_2及氮掺杂TiO_2薄膜的研究