Results 81 to 90 of about 69,846 (270)

Photoelectrochemical Hydrogen Production Using TiO2/Mn‐CdS Photoanode with ZnS Passivation and CoPi as Hole Transfer Relay

Advanced Sustainable Systems, EarlyView.
The electrode features TiO2 as a stable UV‐absorbing substrate, Mn‐doped CdS to extend light absorption into the visible range, ZnS to prevent CdS photocorrosion, and an outer cobalt phosphate (CoPi) that catalyzes oxygen evolution, efficiently enhancing hole transfer from the photoanode to the electrolyte.
Hwapyong Kim, Chaitanya B. Hiragond, Sung Wook Koo, Orim Lee, Su‐Il In   +4 more
wiley   +1 more source

Scalable, Microwave‐Enabled Synthesis of Ternary WxTi1‐xO2 and Heterostructured TiO2‐WO3‐x Colloidal Nanocrystals: Carrier Dynamics and Photocatalytic Properties

Advanced Science, EarlyView.
Two microwave‐assisted synthetic methods, specifically a one‐pot and a seeded‐growth approach, are developed within a hydroalcoholic solution for the growth of single‐phase ternary WxTi1‐xO2 and heterostructured TiO2‐WO3‐x colloidal nanocrystals. Both types of nanocrystals show significant photocatalytic activity for 4‐methoxybenzyl alcohol oxidation ...
Riccardo Scarfiello, Michele Guizzardi, Angela Fiore, Armando Genco, Concetta Nobile, Elisabetta Perrone, Sara Fernanda Orsini, Clémentine Fellah, Lucian Roiban, Marianna Bellardita, Anna Maria Venezia, Giulio Cerullo, Leonardo Palmisano, Luigi Carbone   +13 more
wiley   +1 more source

Electrical Transport Properties of Polycrystalline and Amorphous TiO2 Single Nanotubes

, 2017
The electrical transport properties of anodically grown TiO2 nanotubes was investigated. Amorphous nanotubes were anodically grown on titanium foil and transformed through annealing into the anatase phase.
Barzola-Quiquia, Jose, Böttner, Julia, Esquinazi, Pablo, Estrela-Lopis, Irina, Hwang, Imgon, Schmuki, Patrik, So, Seulgi, Stiller, Markus   +7 more
core   +1 more source

Textural evolution and phase transformation in titania membranes: Part 2. - Supported membranes [PDF]

, 1993
Nanostructural evolution and phase transformation in supported and unsupported titania membranes have been studied using Raman spectroscopy, X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM).
Burggraaf, Anthonie J., Keizer, Klaas, Kumar, Krishnankutty-Nair P., Nagamoto, Hidetoshi, Okubo, Tatsuya   +4 more
core   +2 more sources

Selective Conversion of Polyolefin Waste to Branched Alkanes via Methane‐Free Tandem Hydrocracking–Isomerization

Advanced Science, EarlyView.
Scheme illustrating the selective conversion of plastic waste to isomerized C4‐C12 products using RuSZ1 under different reaction conditions. ABSTRACT In recent years, catalytic hydrocracking has emerged as a promising waste‐to‐feedstock solution for processing plastic waste.
Xinbang Wu, Sitan Wang, Matilde Onofri, Kande Liu, Kun‐Han Lin, Roland C. Turnell‐Ritson, Li Shi, Xuan Meng, Paul J. Dyson   +8 more
wiley   +1 more source

Solar‐driven co‐evolution of H2 and H2O2 from pure water splitting over emerging photocatalysts: Detailed mechanism and future outlook

PhotoMat, EarlyView., 2023
Photocatalytic water splitting for co‐evolution of H2 and H2O2 is deemed as a sustainable and promising strategy to address energy and environment issues, thus receiving increasing attention and realizing continuous achievements. This review aims to offer a deep understanding of the mechanism for H2 and H2O2 co‐evolution and the design principle of ...
Qiaohong Zhu, Jiaqi Wu, Mengmeng Du, Ning Zhang, Bocheng Qiu   +4 more
wiley   +1 more source

X-ray Anomalous Scattering of Diluted Magnetic Oxide Semiconductors: Possible Evidence of Lattice Deformation for High Temperature Ferromagnetism

, 2007
We have examined whether the Co ions crystallographically substitute on the Ti sites in rutile and anatase Ti_{1-x}$Co$_{x}$O$_{2-delta}$ thin films that exhibit room-temperature ferromagnetism.
Daisuke Okuyama, Hideaki Ishida, Hidemi Toyosaki, Masashi Kawasaki, Shinya Niioka, Tadashi Satoh, Takeshi Matsumura, Tomoteru Fukumura, Y. Waseda, Yasuhiro Yamada, Youichi Murakami   +10 more
core   +1 more source

Ultrasonic‐Assisted Photocatalytic Conversion of Air to Nitric Acid Under Ambient Conditions

Advanced Science, EarlyView.
Ultrasound‐assisted photocatalytic air oxidation to nitrate enhances soil nitrogen fertilizer dynamics, thereby enabling improved energy conversion efficiency and sustainable agriculture. ABSTRACT The production of nitric acid (HNO3) holds significant importance in the chemical industry, and achieving direct air‐to‐HNO3 conversion with high efficiency ...
Shiming Chen, Hanlan Hong, Yunchuan Tu, Chao Zhen, Rui Zheng, Yuxi Yao, Junxiong Chen, Tianlin Wang, Xiumei Zhan, Fanhe Kong, Huazhe Yang, Gang Liu   +11 more
wiley   +1 more source

Glancing Angle Deposition Effect on Structure and Light-Induced Wettability of RF-Sputtered TiO2 Thin Films

Micromachines, 2018
Crystalline TiO2 films were prepared on unheated glass substrates by radio frequency (RF) reactive magnetron sputtering at normal angle of incidence (a = 0°) and at glancing angle (a = 87°).
Vasiliki E. Vrakatseli, Alexandros N. Kalarakis, Angelos G. Kalampounias, Eleftherios K. Amanatides, Dimitrios S. Mataras   +4 more
doaj   +1 more source

Ferromagnetism of cobalt-doped anatase TiO$_2$ studied by bulk- and surface-sensitive soft x-ray magnetic circular dichroism

, 2012
We have studied magnetism in anatase Ti$_{1-x}$Co$_x$O$_{2-\delta}$ ({\it x} = 0.05) thin films with various electron carrier densities, by soft x-ray magnetic circular dichroism (XMCD) measurements at the Co $L_{2,3}$ absorption edges.
Chang, F. -H., Chen, C. T., Fujimori, A., Fukumura, T., Huang, D. -J., Ishigami, K., Kataoka, T., Kawasaki, M., Lin, H. -J., Shibata, G., Singh, V. R., Verma, V. K., Yamada, Y., Yamazaki, Y.   +13 more
core   +1 more source