Results 51 to 60 of about 101,875 (254)

Nucleation Phenomenon in Silica Xerogels and Pd/SiO2, Ag/SiO2, Cu/SiO2 Cogelled Catalysts

Journal of Sol-Gel Science and Technology, 2003
Pd/SiO2, Ag/SiO2 and Cu/SiO2 xerogel catalysts have been synthesized by cogelation of tetraethoxysilane (TEOS) and chelates of Pd, Ag and Cu with 3-(2-aminoethylamino)propyltrimethoxysilane (EDAS). It appears that, in cogelled samples, the metal complex acts as a nucleation agent in the formation of silica particles.
Alié, Christelle, Lambert, Stéphanie, Heinrichs, Benoît, Pirard, Jean-Paul   +3 more
openaire   +2 more sources

Development of a Three‐Axis Planar Hall Magnetoresistance Sensor Using a Superparamagnetic Nanoparticle‐Based Flux Guide

Advanced Functional Materials, EarlyView.
A printed superparamagnetic nanoparticle‐based flux guide enables the realization of a hysteresis‐free three‐axis magnetic sensor. This innovative architecture efficiently redirects out‐of‐plane fields to planar sensing elements, facilitating simultaneous vector detection without complex reset protocols.
Changyeop Jeon, Mijin Kim, Keonmok Kim, Byeonghwa Lim, Bibhutibhusan Nayak, Youngdo Jung, Bo‐Yeon Lee, Taehyeong Jeon, Jinwoo Kim, Sunjong Oh, CheolGi Kim   +10 more
wiley   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

The Effect of SiO₂ Addition to the Hydroxyapatite/Curcumin Composite Properties

Indonesian Journal of Chemistry
Hydroxyapatite/curcumin composites have been studied as a calcium phosphate cement candidate. In this research, the effects of adding SiO2 to the hydroxyapatite/curcumin composite on the characteristics of the cement, such as the crystal and surface ...
Tri Windarti, Nor Basid Adiwibawa Prasetya, Ngadiwiyana Ngadiwiyana   +2 more
doaj   +1 more source

Single‐Step Recovery of Water from Stable Crude Oil‐Water Emulsion Using Surface Engineered Hybrid Inorganic‐Polymer Membranes

Advanced Functional Materials, EarlyView.
Atomic layer deposition is used to conformally surface engineer polymeric membranes to fabricate inorganic–organic hybrid membranes. These membranes have exceptionally strong attraction toward water even in high oil containing emulsions, which leads to an extremely strong hydration layer at the interface.
Bratin Sengupta, Yining Liu, Gaurab Sarkar, Rouke Cai, Katrina Sparks, Chi Thang Nguyen, Tamar Segal‐Peretz, Seth B. Darling, Jeffrey W. Elam   +8 more
wiley   +1 more source

Clean 3,4-Dihydropyrimidones Synthesis via Biginelli Reaction over Supported Molybdenum: Structural and Textural Characteristic of αMoO3

Bulletin of Chemical Reaction Engineering & Catalysis, 2020
A one-pot three-component synthesis of dihydropyrimidinones (DHPMs) via Biginelli reaction was carried out at 100 °C using benzaldehyde, ethyl acetoacetate and urea as reactants, in the presence of ethanol and free solvent, in heterogeneous catalytic ...
Ouzna Kheffache, Cristina Lopez-Olmos, Inmaculada Rodriguez-Ramos, Ouiza Cherifi   +3 more
doaj   +1 more source

Effect of the Si/SiO2 Interface on Diffusion in SiO2

Hyomen Kagaku, 2005
Using 30Si-implanted 28SiO2 and natSiO2/28SiO2 structures, Si self-diffusion in SiO2 was studied as a function of temperature and SiO2 thickness (200−650 nm). Si self-diffusivity increased by about one order of magnitude with decreasing SiO2 thickness from 650 to 200 nm with a SiN layer, i.e., the shorter the distance between the 30Si diffusers and the
FUKATSU, Shigeto, ITOH, Kohei M., UEMATSU, Masashi, FUJIWARA, Akira, KAGESHIMA, Hiroyuki, TAKAHASHI, Yasuo, SHIRAISHI, Kenji   +6 more
openaire   +2 more sources

Performance Enhancement of Tin Chloride‐Incorporated Ferroelectric Polymer‐Based Artificial Synapse for Hardware Neural Networks

Advanced Functional Materials, EarlyView.
This paper proposes a highly efficient ferroelectric artificial synapse device based on an oxide semiconductor and SnCl2‐inserted P(VDF‐TrFE) gate dielectric layer. This FeFET significantly improved the synaptic performance due to the ion‐dipole interaction.
Hyun‐Soo Kim, Hyunkyu Lee, Yeonho Choi, Won Young Jang, Hyungmin Kim, Krishna Moorthy Ponnusamy, Hongseung Lee, Jaewook Yoo, Ji Ye Lee, S. Chandramohan, Seongin Hong, Hagyoul Bae, Hyeon‐Sik Jang, Sang Yeol Lee, Keun Heo   +14 more
wiley   +1 more source

Fabrication of composites based on Ca₁₀(PO₄)₆(OH)₂ and SiO₂

Macedonian Journal of Chemistry and Chemical Engineering, 2006
The aim of the work described in this paper was to make a composite consisting of hydroxyapatite as bioactive matrix and SiO2 as bioinert component. Five different systems were formed where the content of SiO2 in the hydroxyapatite matrix were 10, 30, 50,
Gordana Ruseska, Emilija Fidančevska, Jörg Bossert, Venceslav Vassilev   +3 more
doaj  

Ionic Precursors Transformed Into Vinyl Acetate Synthesis Catalyst via Reaction‐Driven Restructuring

Advanced Functional Materials, EarlyView.
This work demonstrates that a simple physical mixture of Pd and Au ionic precursors, KOAc promoter, and SiO2 support can transform into a highly active vinyl acetate synthesis catalyst through reaction‐driven restructuring. The results highlight reaction‐induced restructuring as an innovative and sustainable catalyst design strategy.
Byeong Jun Cha, Welman C. Elias, Hunter P. Jacobs, Kimberly N. Heck, Saghar Rezaie, Sadegh Yazdi, Kiheon Hong, Justin J. Dodson, Laiyuan Chen, Sean G. Mueller, Steven R. Alexander, Michael S. Wong   +11 more
wiley   +1 more source