Results 111 to 120 of about 36,871 (300)

Uso de métodos químicos para sintetizar nanopartículas de SnO2-TiO2

Revista Facultad de Ingeniería Universidad de Antioquia, 2008
En este trabajo se utilizaron dos rutas químicas para sintetizar polvos cerámicos del sistema SnO2-TiO2: los métodos de precipitación controlada y precursor polimérico (Pechini).
Alejandra Montenegro Hernández, Nathalie Marcela Cerón, Jorge Enrique Rodríguez Páez   +2 more
doaj  

Stannic Oxide-Titanium Dioxide Coupled Semiconductor Photocatalyst Loaded with Polyaniline for Enhanced Photocatalytic Oxidation of 1-Octene

International Journal of Photoenergy, 2007
Stannic oxide-titanium dioxide (SnO2–TiO2) coupled semiconductor photocatalyst loaded with polyaniline (PANI), a conducting polymer, possesses a high photocatalytic activity in oxidation of 1-octene to 1,2-epoxyoctane with aqueous hydrogen peroxide.
Hadi Nur, Izan Izwan Misnon, Lim Kheng Wei   +2 more
doaj   +1 more source

Self‐Healing Ionogel Dual‐Network Enables Synergistic Defect Passivation and Strain Relief for High‐Efficiency Robust Perovskite Photovoltaics

Advanced Science, EarlyView.
PSCs are afflicted by inherent defects and lattice strain that limit PCE and stability. A cross‐linked multifunctional ionogel [HA‐AA][EMIES] is developed to modulate crystallization, relieve residual strain, and passivate defects, extending carrier diffusion length to over 8 µm and delivering PCEs of 26.45% for rigid devices and 25.14% for flexible ...
Wen Wu, Gang Wang, Chen Liu, Xiao‐Li Du, Sheng Yang, Shao‐Long Wang, Jia‐Yi Tian, Ling‐Feng Chao, Xiang‐Feng Deng, Yi Jiang, Yong‐Hua Chen, Gui‐Chuan Xing, Wen‐Yong Lai   +12 more
wiley   +1 more source

Liquid‐Metal Interfacial Chemistry for Crystal and Defect Engineering in Two‐Dimensional Post‐Transition‐Metal Materials

Advanced Science, EarlyView.
Liquid‐metal interfaces provide dynamic reaction environments in which crystal growth, composition, and defect formation are intrinsically coupled. This Review reveals how interfacial oxidation, alloy thermodynamics, elemental migration, atmosphere, and processing govern defects in 2D post‐transition‐metal materials, and how these defects can be ...
Zhejun Hong, Mohammad B. Ghasemian, Chung Kim Nguyen, Huy Hoang Nguyen, Kourosh Kalantar‐Zadeh, Torben Daeneke, Nitu Syed, Ali Zavabeti   +7 more
wiley   +1 more source

At room temperature graphene/SnO2 is better than MWCNT/SnO2 as NO2 gas sensor

, 2016
Graphene/SnO2 and multi-walled carbon nanotubes (MWCNT)/SnO2 composites are synthesized by sol–gel process on adding 0.2 weight% of graphene and MWCNT into the precursor sol. The gas response of these composite was measured at room temperature.
Jain, Kiran, Srivastava, Vibha
core   +4 more sources

Novel Optical Functionalities in Memristors

Advanced Electronic Materials, EarlyView.
We present a tunnel junction memristor with expanded optical functionalities enabled by the integration of an ultra‐thin CdS barrier and a top ITO electrode. UV illumination triggers a photovoltaic response that can sense the memristor state. At very low temperatures, the UV light generates a high injection of photocarriers and produces a volatile ...
Isabel Tenreiro, Víctor Rouco, Mariona Cabero, Henry Navarro, Javier del Valle, Iván K. Schuller, Alberto Rivera‐Calzada   +6 more
wiley   +1 more source

Desenvolvimento de materiais com propriedades catalíticas para geração de hidrogênio a partir do processo de reforma a vapor do etanol [PDF]

, 2008
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Química.Neste trabalho foi apresentado o desenvolvimento de novos materiais com potenciais propriedades catalíticas para ...
Fajardo, Humberto Vieira
core  

Effects of Doping, Disorder, and Compensation on Electron Conduction in Si‐Doped k‐Ga2O3 Close to the Metal‐to‐Insulator Transition

Advanced Electronic Materials, EarlyView.
Self‐compensation effects attributed to doping‐dependent shift‐defects at APBs Validation of Hall data for VRH transport near the MIT Persistence of VRH transport for any SiH4 flow in Si‐doped κ‐Ga2O3 due to high compensation coupling transport and EPR data as strategy to study electronic properties and doping T‐dependence of transport data agrees with
Antonella Parisini, Hans Jürgen von Bardeleben, Ildicò Cora, Zsolt Fogarassy, Paola Alippi, Vincenzo Fiorentini, Ian Vickridge, Piero Mazzolini, Alessio Bosio, Roberto Fornari   +9 more
wiley   +1 more source

Decoupled Dielectric Optimization and YbOx Contact Engineering in All‐Spray‐Processed Oxide Thin‐Film Transistors

Advanced Electronic Materials, EarlyView.
Fully spray‐processed oxide thin‐film transistors are advanced by decoupling dielectric quality from contact energetics. Thermochemically densified MgO suppresses defect‐mediated leakage and improves electrostatic control, while an ultrathin YbOx interlayer induces a 1.67 eV work‐function shift that boosts mobility from ∼40 to ∼94 cm2 V−1 s−1.
Ahmed Mohamed, Nathan R. Halcovitch, Oleg V. Kolosov, Arokia Nathan, William I. Milne, George Adamopoulos   +5 more
wiley   +1 more source

Pd-SnO2/Al2O3 heteroaggregate nanocatalysts for selective hydrogenations of p-nitroacetophenone and p-nitrobenzaldehyde

, 2018
Pd-SnO2 heteroaggregate nanocatalysts were synthesized by in-situ transformation of PdSn bimetallic nano particles on alumina. The PdSn bimetallic nanoparticles were prepared by co-reduction of Pd and Sn precursors.
Zhou, Shenghu, Tang, Weiqiang, Liu, Miaomiao, Zhao, Shuangliang, Xu, Yisheng, Yu, Hongbo, Yin, Hongfeng   +6 more
core