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Journal of Environmental Sciences 2010年第8期22卷 1281-1289页

作者： Junwei Zhang Dafang Fu Yunda Xu Cuiyun Liu Department of Municipal Engineering Southeast University Nanjing 210096 China Nanjing Engineering Research Centre for Water Treatment and Ecological Restoration Nanjing 210013 China

The experimental design methodology was applied for modeling and optimizing the operation parameters on photocatalytic degradation of chloramphenicol （CAP） using tio 2 as photocatalyst in a photoreactor. Three experimental parameters （including pH, tio 2 concentration and CAP initial concentration） were adopted to obtain the preliminary information. The multivariate experimental design was employed to establish a quadratic model as a functional relationship between the degradation rate of CAP and three experimental parameters. The interaction effects and optimal parameters were obtained by using Design Expert software. The optimal values of the operation parameters under the related constraint conditions were found at pH 6.4, tio 2 concentration of 0.94 g/L and CAP initial concentration of 19.97 mg/L, respectively. The degradation rate of CAP approached 85.97% under optimal conditions. The regression analysis with R 2 value of 0.9519 had a good agreement between the experimental results and the predictive values. In addition, pH and tio 2 concentration had a significant influence on the degradation rate of CAP.

关键词： chloramphenicol photocatalysis tio 2 response surface methodology

Fabrication and characterization of electrospun tio2/CuS micro-nano-scaled composite fibers

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Progress in Natural Science:Materials International 2012年第1期22卷 59-63页

作者： Delong Li,Chunxu Pan School of Physics and Technology,Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro-and Nano-structures,Wuhan University,Wuhan 430072,China School of Physics and Technology Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro- and Nano-structures Wuhan University Wuhan 430072 China

A process to fabricate a kind of novel micro-nano scaled tio2 /CuS composite fibers by electrospinning technique and chemical precipitation method was developed in the present *** microstructures and photoelectronic properties of the fibers were characterized using SEM,FT-IR,UV-vis and fluorescence *** results revealed that the tio2 portion in the composite fibers was a mixture rutile and anatase phases while tio2 and CuS had been fully *** fibers had smooth surface with a diameter of 50-300 *** with pure tio2 fiber,the tio2 /CuS micro-nano-scaled composite fibers exhibited a strong absorption in the visible light region and the efficiency of photo-induced charge separation were *** composite system is of widely potential applications in the areas such as solar cells,supercapacity,photocatalysis,etc.

关键词： Electrospinning tio 2 CuS Composite fiber

高强度聚乙烯醇/聚苯胺/聚吡咯/tio2导电杂化水凝胶的制备与性能

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应用化学 2020年第5期37卷 541-546页

作者：佘小红杜娟王璐珮朱雯莉杨巧玲邹智挥四川轻化工大学材料科学与工程学院四川自贡643000

本文以聚乙烯醇(PVA)、苯胺(ANI)、吡咯(Py)及钛酸丁酯(TBOT)为原料,通过溶胶-凝胶法、原位氧化聚合法及冷冻-融溶法一步得到聚乙烯醇/聚苯胺/聚吡咯/tio 2(PVA/PANI/PPy/tio 2)杂化水凝胶。结果表明,该杂化水凝胶具有优异的力学性能和... 详细信息

本文以聚乙烯醇(PVA)、苯胺(ANI)、吡咯(Py)及钛酸丁酯(TBOT)为原料,通过溶胶-凝胶法、原位氧化聚合法及冷冻-融溶法一步得到聚乙烯醇/聚苯胺/聚吡咯/tio 2(PVA/PANI/PPy/tio 2)杂化水凝胶。结果表明,该杂化水凝胶具有优异的力学性能和导电性能。当n(ANI)∶[KG-*3/5]n(Py)=8∶[KG-*3/5]2(TBOT体积为100μL)时,其压缩强度高达2.45 MPa。同时,在外加电源的作用下,该凝胶能够使灯泡发光。当n(ANI)∶[KG-*3/5]n(Py)=2∶[KG-*3/5]8(TBOT体积为150μL)时,杂化水凝胶的电导率(0.25 S/m)最好。该杂化水凝胶有望广泛地应用在柔性可穿戴电子器件、安全离子电池、传感器和生物器件等领域。

关键词： tio 2 聚苯胺聚吡咯高强度导电杂化水凝胶

锐钛型tio2在紫外光吸附脱硫中的机理研究

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常州大学学报（自然科学版） 2020年第6期32卷 15-21页

作者：孙雪妮迟名扬 TATARCHUK Bruce 谢婷婷王晗萤王俊韶晖常州大学石油化工学院江苏省绿色催化材料与技术重点实验室江苏常州213164 奥本大学阿拉巴马奥本36849

以锐钛型tio 2为吸附剂,采用固定床进行穿透实验,分别考察tio 2在传统无光及新型紫外光辅助工艺中的脱硫性能,然后根据穿透曲线计算得出吸附剂在不同操作条件下的穿透硫容量和饱和硫容量。结果表明紫外光辅助吸附脱硫技术能显著提高tio ... 详细信息

以锐钛型tio 2为吸附剂,采用固定床进行穿透实验,分别考察tio 2在传统无光及新型紫外光辅助工艺中的脱硫性能,然后根据穿透曲线计算得出吸附剂在不同操作条件下的穿透硫容量和饱和硫容量。结果表明紫外光辅助吸附脱硫技术能显著提高tio 2对于模拟燃料油和JP8重型煤油型燃油的吸附脱硫性能。之后采用荧光光谱仪和X射线光电子能谱仪(XPS)考察表面活性基团的形成路径,最后采用原位红外光谱技术(in-situ IR),以正辛烷和苯并噻吩为探针分子,考察紫外光下有机硫化物与活性位的结合机理。表征结果显示:紫外光激发的羟基自由基能与晶格氧、桥联羟基及化学吸附水发生反应,生成大量的活性端羟基,有利于吸附脱硫。在紫外光辅助吸附脱硫过程中,烷烃和有机硫化物较稳定,不发生光催化氧化反应,大部分苯并噻吩可与活性端羟基形成π耦合,少部分噻吩的苯环与端羟基以氢键相结合,从而被吸附脱除。

关键词：吸附脱硫紫外光 tio 2 羟基自由基苯并噻吩

tio2(110)表面CO2吸附过程的红外光谱研究

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TiO2(110)表面CO2吸附过程的红外光谱研究

Photoelectrocatalytic degradation of Rose Bengal

中国化学会第30届学术年会

作者：曹云君余敏胡树军颜世申徐明春山东大学物理学院

Clear elucidation of CO adsorption on single crystalline tio surfaces will be helpful in understanding of CO photoactivation mechanism on tio surfaces. Using UHV-FTIRS combined with theoretical simulations, we systematically investigated CO adsorption and interaction on rutile tio2(110) surfaces. With increasing CO exposure, the oxygen vacancy(Vo) sites, the five-coordinated Ti cation(Ti) sites and the bridging oxygen(O) sites are occupied by linear CO in succession at low temperature. The coupling has occurred between two neighboring CO adsorbed on Ti sites since rather low CO coverage(0.5 ML), including one in-phase vibrational mode and one out-of-phase vibrational mode, which lead to two ν(OCO) asymmetric stretching vibrations bands. Two coupled geometries of adjacent CO on Ti sites were determined by theoretically simulating the vibrational band splitting. For the higher CO coverage(1.5 ML), the horizontal adsorption configuration along [1-10] azimuth of CO adsorbed on O sites is identified for the first time using polarization- and azimuth-resolved RAIRS in experiments.

关键词： tio 2 CO 2 UHV-FTIRS photocatalysis

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Journal of Environmental Sciences 2003年第5期15卷 595-599页

作者： LIUHui-ling ZHOUDing LIXiang-zhong YUEPing-tao DepartmentofEnvironmentalEngineering HarbinInstituteofTechnologyHarbin150001China DepartmentofCivilandStructuralEngineering TheHongKongPolytechnicUniversityHungHornKomloonHongKong

An innovative photoelectrode, tio 2/Ti mesh electrode, was prepared by galvanostaticanodisation. The morphology and the crystalline texture of the tio 2 film on mesh electrode were examined by scanning electronic microscopy and Raman spectroscopy respectively. The examination results indicated that the structure and properties of the film depended on anodisation rate, and the anatase was the dominant component under the controlled experimental conditions. Degradation of Rose Bengal(RB) in photocatalytic(PC) and photoelectrocatalytic(PEC) reaction was investigated, the results demonstrated that electric biasing could improve the efficiency of photocatalytic reaction. The measurement results of TOC in photoelectrocatalytic degradation showed that the mineralisation of RB was complete relatively. The comparison between the degradation efficiency of RB in PEC process and that in aqueous tio 2 dispersion was conducted. The results showed that the apparent first order rate constant of RB degradation in PEC process was larger than that in aqueous dispersion with 0 1%—0 3% tio 2 powder, but was smaller than that in aqueous dispersion with 1 0% tio 2

关键词： mesh electrode anodisation tio 2 photoelectrocatalytic oxidation Rose Bengal

Preparation of the polysulfonamide/titania composites

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Journal of Shanghai University(English Edition) 2010年第6期14卷 460-463页

作者：唐志勇徐文婷焦青华 Research Center of Composite Materials Shanghai University School of Materials Science and Engineering Shanghai University

A series of polysulfonamide （PSA）/tio 2 modifier nano-composite films were successfully prepared by in-situ polymerization at a low temperature based on 4, 4-diaminodiphenylsulfone and terephthaloyl chloride in the common solvent N, N-dimethylacetamide （DMAc）. It was shown that the nano particles were well dispersed in the polymer substrate. Mean-while, PSA/tio 2 /modifier composites exhibited good UV-resistant properties and mechanical properties. In addition, the composites’ heat stability improved. These prepared composites are promising in preparing spinning solution and might have potential application in heat-resistant fiber.

关键词： tio 2 polysulfonamide (PSA) composites

ICP-OES法分析复杂岩石样品中的硅酸盐九项以及磷元素的干扰校正

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山东化工 2020年第15期49卷 104-107页

作者：刘思琪王玉学刘环核工业二四〇研究所辽宁沈阳110135

岩石样品用盐酸、硝酸、氢氟酸和高氯酸消解前处理,通过电感耦合等离子体发射光谱法测定了复杂岩石中的K2O、CaO、Na2O、MgO、Al2O3、Fe2O3、tio2、MnO、P2O 5硅酸盐九项的含量,对某复杂岩石样品中的P元素进行干扰校正处理。此方法简便... 详细信息

岩石样品用盐酸、硝酸、氢氟酸和高氯酸消解前处理,通过电感耦合等离子体发射光谱法测定了复杂岩石中的K2O、CaO、Na2O、MgO、Al2O3、Fe2O3、tio2、MnO、P2O 5硅酸盐九项的含量,对某复杂岩石样品中的P元素进行干扰校正处理。此方法简便高效、检出限低、准确度高,测量结果较为理想。各元素的线性关系较好,样品的加标回收率在96%~101%之间,相对误差(RE)在-1.05%~0.95%之间,对GBW07108测试精密度(RSD,n=11)为0.13%~1.85%,适用于地质岩石的快速、批量分析。

关键词： ICP-OES 四酸消解 K 2O CaO Na 2O MgO Al 2O 3 Fe 2O 3 tio 2 MnO P 2O 5 干扰校正

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二氧化钛陶瓷膜的制备及表征

北京石油化工学院学报 2019年第4期27卷 1-5,21页

作者：宋丹冯旭楞周硕杨忆新罗明生北京石油化工学院化学工程学院燃料清洁化及高效催化减排技术北京市重点实验室

采用溶胶浸渍法将tio 2膜层与自制陶瓷基体膜结合制得二氧化钛陶瓷膜。通过正交实验考察烧结助剂、造孔剂的投加量以及焙烧温度对基体膜性质的影响。根据基体膜的表面形貌、孔隙率、平均孔径、力学强度、接触角等性质筛选出性能较佳的... 详细信息

采用溶胶浸渍法将tio 2膜层与自制陶瓷基体膜结合制得二氧化钛陶瓷膜。通过正交实验考察烧结助剂、造孔剂的投加量以及焙烧温度对基体膜性质的影响。根据基体膜的表面形貌、孔隙率、平均孔径、力学强度、接触角等性质筛选出性能较佳的基体膜。通过表征测试考察了tio 2溶胶的涂覆次数和焙烧温度对陶瓷膜的性能影响。结果表明:高岭土投加量和焙烧温度的增加有利于Al 2O 3颗粒之间粘结,随着焙烧温度的升高,基体膜孔径增大,孔隙率降低。而tio 2结合在基体膜的孔道内,使膜的孔隙率有所下降。随着tio 2溶胶涂覆次数的增多,焙烧温度的升高,tio 2陶瓷膜的力学性能逐渐增强,亲水性也有所提高。

关键词： tio 2 陶瓷膜溶胶浸渍法基体膜

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铜掺杂锐钛矿型二氧化钛光催化性能研究

山东化工 2021年第17期50卷 22-23,25页

作者：周琴唐茂刘佳伟杨代雄朱晓东冯静成都大学机械工程学院四川成都610106

采用溶胶-凝胶法,在450℃煅烧下制备了纯tio 2和不同浓度Cu掺杂tio 2纳米粉末。通过XRD、PL、SEM等测试方法对样品的晶体结构、光生电子和空穴的复合率以及微观形貌进行表征,并选用罗丹明B作为目标污染物,研究其光催化性能的影响。结果... 详细信息

采用溶胶-凝胶法,在450℃煅烧下制备了纯tio 2和不同浓度Cu掺杂tio 2纳米粉末。通过XRD、PL、SEM等测试方法对样品的晶体结构、光生电子和空穴的复合率以及微观形貌进行表征,并选用罗丹明B作为目标污染物,研究其光催化性能的影响。结果表明450℃热处理后样品均为锐钛矿,Cu掺杂后能够细化晶粒,抑制光生电子与空穴的复合,但并未提高tio 2光催化活性,这可能是Cu掺杂后引起了更严重的团聚减小了比表面积造成的。

关键词：溶胶-凝胶法 Cu掺杂 tio 2 光催化性能