نتایج جستجو برای: pt modified tio2

تعداد نتایج: 316951  

1996
J. P. Wang Y. C. Ling K. S. Liu I. N. Lin

Thin films of phase-pure perovskite PLT (Pb0.95La0.05Ti0.9875O3) were deposited in situ onto Si, Pt/Ti/SiO2 /Si, and SrTiO3 /Si substrates by pulsed laser deposition from stoichiometric targets. No Pb loss was observed in the near-surface region. The blocking of the interdiffusion between inner Si substrate and the outer PLT films by SrTiO3 buffer layer was evidenced using x-ray diffraction ~XR...

Journal: :Materials Research Bulletin 2021

This study demonstrates the glucose-template assisted synthesis of hydrogen-treated Pt: TiO2/WO3 composites, and their round-the-clock photoactivity towards methanol (MeOH) degradation under light illumination in dark. XRD indicated increasing rutile fraction TiO2 as a function template removal, WO3 crystallinity H2 treatment process. The presence oxygen vacancies was confirmed by XPS. Lower re...

Journal: :Energies 2021

Interfacial electron injection from a photoexcited surface-immobilized dye to semiconductor substrate is key reaction for dye-sensitized photocatalysts. We previously reported that the molecular orientation of heteroleptic Ir(III) photosensitizer on TiO2 nanoparticle surface was important efficient interfacial injection. In this work, overcome weak light absorption ability and improve photoindu...

Journal: :Cancer research 1981
B Malfoy B Hartmann J P Macquet M Leng

Two rabbits were immunized with native DNA modified in vitro by cis-dichlorodiammineplatinum(II) (cis-Pt). The interactions between the antiserum and several natural and synthetic nucleic acids were studied primarily by radioimmunoassays. Native DNA's modified by platinum compounds with labile groups in the cis position are recognized by the antiserum. No cross-reaction is found with native DNA...

Journal: :Dalton transactions 2015
Xiao-Jing Wang Xiao Tian Fa-Tang Li Jun Zhao Yu-Pei Li Rui-Hong Liu Ying-Juan Hao

A Ti species modified g-C3N4 photocatalyst was synthesized via an in situ hydrothermal route and the subsequent low-temperature calcination. The hydrothermal process results in not only the fabrication of TiO2/g-C3N4 heterojunctions, but also the coordination between Ti species and g-C3N4, which are verified by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrical r...

2015
Katya Milenova Penko Nikolov Irina Stambolova Plamen Nikolov Vladimir Blaskov

In this article a comparison was made between Cu and TiO2 supported catalysts on activated carbon for ozone decomposition reaction. The activated carbon support in the case of TiO2/AC sample was prepared by physicochemical pyrolysis and for Cu/AC samples the supports are chemically modified carbons. The prepared catalysts were synthesized by impregnation method. The samples were annealed in two...

2007
Jason R. Croy Simon Mostafa Jing Liu Yong-ho Sohn Beatriz Roldan Cuenya

We present here the size-dependent decomposition of methanol (MeOH) over narrowly distributed Pt nanoparticles supported on nanocrystalline anatase TiO2 powder. Micelle encapsulation has been used to create Pt catalysts with average particle sizes of ~ 4, 6, and 8 nm. A packed bed mass flow reactor and mass spectrometry were employed to quantify the catalyst’s activity and selectivity. Among th...

2010
B. Tryba A. W. Morawski

Commercially available TiO2 of anatase structure produced in the Chemical Factory Police S.A. was modified by doping Ag from AgNO3 solution via photodeposition method. The obtained amount of deposited Ag on TiO2 was in the range of 0.11 to 0.98 mass %. Deposition of Ag on TiO2 resulted in the retarding of the recombination reaction and formation of the higher amount of OH radicals on the photoc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1393

دربخش اول این پروژه تحقیقاتی، واکنش تشکیل کمپلکس بین لیگاند درشت مولکول بنزو-15-کرون-5 (b15c5) و کاتیون al3+، در حلال های غیرمائی استونیتریل (an)، متانول (meoh) و پروپانول (proh) و همچنین در مخلوط دوجزئی حلال های غیر آبی استونیتریل-متانول (an-meoh)، استونیتریل-پروپانول(an-proh)، استونیتریل-متیل استات(an-meoac) و استونیتریل- اتیل استات(an-etoac) در دماهای مختلف با استفاده از روش هدایت سنجی مورد ...

2017
Y. Zhang Saeid Soltanian S. Zhou S. X. Dou Yun Zhang Yue Zhao SiHai Zhou ShiXue Dou

In this paper, MgB2 bulks were prepared with doped TiO2 nanoparticles surface-modified by 5-10% SiO2. Quantitative X-ray diffraction (XRD) analysis was performed to obtain the weight fraction of impurities using the Rietveld method. The effects of addition of TiO2/SiO2 nanoparticles on the critical temperature (Tc), the upper critical field (Hc2), and the irreversibility field (Hirr) as a funct...

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