为利用TiO2作为光催化降解水中有机污染物，以铁铝水滑石为载体，以CeO2掺杂的TiO2为活性组分，制得光催化剂前体，再以SO2-4对其进行修饰，制得了SO2-4／CeO2-TiO2／HTLC 光催化剂。采用XRD、SEM、EDS 和UV-Vis DRS等手段对催化剂进行了表征；以甲基橙为模拟污染物，考察了催化剂样品的光催化性能。实验结果表明：CeO2掺杂TiO2粒子在可见光区吸光性能高于TiO2；SO2-4与CeO2-TiO2／HTLC有协同催化作用，SO2-4／CeO2-TiO2／HTLC光催化剂对可见光的吸收大大增强。经模拟日光照射2 h，SO2-4改性的15％（ CeO2-TiO2）／HTLC催化剂对甲基橙的脱色率达到93％。

In order to degrade organic pollutants in water, SO2-4 /CeO2 -TiO2/HTLC photocatalyst was prepared, taking Fe-Al hydrotalcite as support, Cerium-doped TiO2 as the active component to prepare the photocatalyst precursor CeO2 -TiO2/LDOs, which is modified by soak method in H2 SO4 solution.The catalyst was character-ized by means of XRD, SEM, EDS and UV-Vis DRS.With methyl orange as model pollutant, the photocata-lytic performance of the catalysts was determined.Experimental results showed that the absorption of CeO2 -TiO2 particle for the visible light is stronger than TiO2; there is a synergistic effect between SO2-4 and CeO2 -TiO2/HTLC;and the absorption of SO2-4 /CeO2 -TiO2/HTLC photocatalyst for visible light is enhanced.The decolori-zation rate of modified SO2-4 /15%( CeO2 -TiO2 )/HTLC photocatalyst for methyl orange reaches 93%after irra-diation under simulated sunlight for 2 hours.

指出了薄膜元件能否实用化的关键在气敏层的稳定性；提出了粉末溅射和高能溅射是气敏层稳定性的保证。指出了能实用化的薄膜元件是否能生产还要有较高的成品率，这就要求对晶体管光刻工艺进行改造和发展。给出了SnO2/16%CeO2，ZnO/1%CeO2，Fe2 O3/2%CeO2，TiO2/2%CeO2，ZnSnO3（ ZnO +SnO2）元件的气敏特性。

It suggests that the stability of gas sensing film is the key to get applicable thin film sensor;and it puts forward that powder sput-tered and high energy sputtered process may assure the stability. High yield is required to produce the applicable thin film sensor and it needs to improve and develop transistor lithography process. The gas sensing property of SnO2/16%CeO2 ,ZnO/1%CeO2 ,Fe2 O3/2%CeO2 ,TiO2/2%CeO2 ,ZnSnO3 ( ZnO+SnO2 )is given.

通过电化学氧化共沉积技术在A1/导电涂层/α-PbO2-CeO2-TiO2基体上，制备了A1/导电涂层/α-PbO2- CeO2-TiO2/β-PbO2-MnO2-WC-ZrO2复合阳极材料。通过能量色散X射线光谱(EDXS)、阳极极化曲线、暂稳态极化曲线(Tafel)、交流阻抗谱(EIS)、扫描电子显微镜(SEM)以及 X 射线衍射(XRD)等方法研究电流密度对复合阳极材料的化学组分、电化学活性和稳定性的影响。研究结果表明：在电流密度为1 A/dm2条件下制备的A1/导电涂层/α-PbO2-CeO2-TiO2/β-PbO2-MnO2-WC-ZrO2复合材料具有最低的析氧过电位(0.610 V，条件：500 A/m2)，最好的电化学活性，最长的使用寿命(360 h，条件：150 g/L H2SO4,2 A/cm2,40°C)以及最低的槽电压(2.75 V，条件：500 A/m2)。而且，随着电流密度的增加，涂层晶粒逐渐增大，MnO2含量也逐渐降低，晶体结构几乎没有变化。

Al/conductive coating/α-PbO2-CeO2-TiO2/β-PbO2-MnO2-WC-ZrO2 composite electrode material was prepared on Al/conductive coating/α-PbO2-CeO2-TiO2 substrate by electrochemical oxidation co-deposition technique. The effects of current density on the chemical composition, electrocatalytic activity, and stability of the composite anode material were investigated by energy dispersive X-ray spectroscopy (EDXS), anode polarization curves, quasi-stationary polarization (Tafel) curves, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), and X-ray diffraction (XRD). Results reveal that the composite electrode obtained at 1 A/dm2 possesses the lowest overpotential (0.610 V at 500 A/m2) for oxygen evolution, the best electrocatalytic activity, the longest service life (360 h at 40 °C in 150 g/L H2SO4 solution under 2 A/cm2), and the lowest cell voltage (2.75 V at 500 A/m2). Furthermore, with increasing current density, the coating exhibits grain growth and

以四氯化钛、硝酸铈为原料,以碳纳米管为载体,通过溶胶-凝胶法结合超临界干燥技术制备CeO2-TiO2/MWCNTs复合光催化剂。利用热重分析（ TG）、X射线衍射（ XRD）、扫描电子显微镜（ SEM）、傅里叶红外光谱（ FT-IR）等手段对催化剂进行表征。结果表明,超临界干燥避免了催化剂的团聚,TiO2为锐钛矿型,平均粒径为12nm。4h 后对甲基橙、亚甲基蓝和苯酚的降解率分别为99．14%、98．98%、98．56%,TOC 的去除率为73．84%、74．56%、84．82%。

CeO2-TiO2/MWCNTs composite photocatalyst samples were prepared by the sol-gel and Super Critical Fluid Drying ( SCFD) method. The morphology and size,structure of the composite were characterized by using X-ray diffraction( XRD) ,scanning electron microscopy( SEM) and other analytical testing methods. The results showed that anatase type TiO2 was formed with uniform size,the average grain diameter was 12nm. The usage of SCFD method avoided the agglomeration of the photocatalyst. The phtotocat-alytic activity was evaluated by phtotocatalytic degradation of the methyl orange,methylene blue and phneol. The degradation rate were 99. 14%,98. 98%and 98. 56%,TOC removal rate were 73. 84%,74. 56%and 84. 82%.

文章以HM沸石-TiO2为复合载体,负载以WO3或MoO3为助剂的V2O5涂层,制备了WO3(MoO3)-V2O5/CeO2-TiO2/HM作为NOx的SCR催化剂;采用XRD、N2吸附-脱附和NH3程序升温脱附(NH3-TPD)对催化剂结构、比表面积和酸性进行了表征;采用常压固定床微型反应器考察催化剂的脱硝性能,着重考察了V2O5质量分数对脱硝性能的影响。实验结果表明:HM沸石的加入有助于提高TiO2载体的比表面积,从而有利于V2O5以单分散态负载;V2O5负载量为8%的催化剂具有最佳脱硝性能,NO转化率达到93%;当V2O5负载量大于8%时,V2O5出现晶体相,催化剂活性反而下降。WO3(MoO3)对V2O5具有助催化作用,加入后使催化剂上有丰富的酸性位和适度的酸量,有利于催化反应的进行。

With WO3 or MoO3 as additive ,V2 O5 coatings was loaded to HM zeolite-TiO2 composite car-rier to prepare WO3 (MoO3 )-V2O5/CeO2-TiO2/HM as NOx SCR catalyst .X-ray diffraction(XRD) , N2 adsorption-desorption and NH3 temperature programmed desorption (NH3-TPD) techniques were used to characterize the structure ,specific surface area and acidic nature of the catalyst .The denitra-tion performance of the catalyst was investigated by using the fixed-bed micro-reactor .The effect of V2 O5 content on the denitration performance was studied extensively .Experimental results showed that HM zeolite was beneficial to improving the specific surface area of the TiO 2 support and was help-ful to the dispersion of V2 O5 on the carrier in a monolayer state .The catalyst with 8% V2 O5 load dis-played the optimal denitration performance and the NO conversion rate reached 93% .When the V2 O5 load was larger than 8% ,V2O5 would be presented in crystalline phase on the catalyst ,which made the catalytic act