Results 41 to 50 of about 712 (189)

Precipitation of niobic acid from potassium niobate in sulphuric acid solution: A route to niobium oxide

The Canadian Journal of Chemical Engineering, EarlyView.
Graphical abstract illustrating the niobic acid precipitation process applied and the product obtained. Abstract This study investigates the precipitation of niobic acid (Nb2O5.nH2O) from potassium niobate solution with addition of sulphuric acid, and its subsequent thermal conversion into niobium oxide (Nb2O5). Thermodynamic modelling with PHREEQC and
Cássia R. Souza, Gabriela C. Silva, Isabel P. Silva, Frederico M. Penha, Sônia D. F. Rocha   +4 more
wiley   +1 more source

Nanorods of Potassium Tantalum Niobate Tetragonal Tungsten Bronze Phase Grown by Pulsed Laser Deposition

, 2013
International audienceK−Ta−Nb−O tetragonal tungsten bronze phase was grown on (11̅02) Al2O3 (R-plane sapphire) by pulsed laser deposition. The microstructure, structure, and chemical composition of the deposit were studied by scanning electron microscopy,
Demange, Valérie, Bouquet, Valérie, Députier, Stéphanie, Guilloux-Viry, Maryline, Dorcet, Vincent, Boullay, Philippe, Simon, Quentin   +6 more
core   +1 more source

Crystal Growth and Dielectric Study of the Niobate Series K3Sr2RNb10O30 (R = Lanthanide) of Tungsten Bronze Structure

Eurasian Chemico-Technological Journal, 2009
Fibre single crystals of K3Sr2RNb10O30 (R = La, Nd, Eu, Gd, Sm) have been successfully grown using the μ-pulling down method. Single crystal X-ray diffraction technique has confirmed that all isolated compounds crystallize with the tetragonal tungsten ...
A. Lahmar, S. Ganschow, J. Doerschel, K. Tsuzuku, M. Couzi, B. Elouadi   +5 more
doaj   +1 more source

Research Progress and Prospects of High‐Entropy Oxide Ceramic for Dielectric Energy Storage

National Materials, EarlyView.
This review highlights the high‐entropy strategy in high‐entropy oxide ceramics for dielectric energy storage, emphasizing enhanced breakdown strength, polarization, and thermal stability. Key material systems, computational tools, and remaining challenges in scalable fabrication are discussed, along with future research directions. ABSTRACT Dielectric
Zhongqian Lv, Yan Song, Minhao Zhang, Yuan‐Hua Lin   +3 more
wiley   +1 more source

Topology‐Oriented Crystalline Architectures of Metal Oxides for Advanced Electrocatalytic Water Splitting

cScience, Volume 2, Issue 2, June 2026.
ABSTRACT Electrocatalytic water splitting remains a cornerstone strategy for sustainable hydrogen production; however, its overall efficiency is restricted by the sluggish oxygen evolution reaction. Metal oxides have emerged as highly promising catalysts owing to their adaptable electronic structures, high chemical stability, and abundant redox‐active ...
Aoxiang Zhu, Mincan Yang, Jiamu Feng, Ziwen Yi, Weilin Xu, Jia Li, Jun Wan   +6 more
wiley   +1 more source

Atomic Layer Deposition in Transistors and Monolithic 3D Integration

Advanced Functional Materials, Volume 36, Issue 41, 21 May 2026.
Transistors are fundamental building blocks of modern electronics. This review summarizes recent progress in atomic layer deposition (ALD) for the synthesis of two‐dimensional (2D) metal oxides and transition‐metal dichalcogenides (TMDCs), with particular emphasis on their enabling role in monolithic three‐dimensional (M3D) integration for next ...
Yue Liu, Taoyu Zou, Cheng‐Yan Xu, Liang Zhen, Yang Li, Yong‐Young Noh   +5 more
wiley   +1 more source

Synthesis and single crystal X-ray structure of the tetragonal tungsten bronze Pb0.91K1.72Li1.46Nb5O15

, 2010
Crystals of Pb0.91K1.72Li1.46Nb5O15, belonging to tetragonal tungsten bronze materials, were grown by the slow cooling technique, and characterized by means of single crystal X-ray diffraction: the structure was solved in the P4bm tetragonal space group,
ROSSI, MANUELA, M. Elaatmani, A. Zegzouti, Capitelli, F., F. Capitelli, M. Rossi, Zegzouti, A., Elaatmani, M.   +7 more
core   +1 more source

Solid-state chemistry and non-linear properties of tetragonal tungsten bronzes materials [PDF]

, 2006
Non-linear properties of tetragonal tungsten bronze materials are related to solid-state chemistry. This family is very prolific, with its five different cationic or anionic crystallographic sites.
Jean Ravez, Annie Simon, SIMON, Annie, RAVEZ, Jean   +3 more
core   +1 more source

Boosting Photo‐Pyroelectric Effect via Tunable Polarization and Interfacial Defect Engineering

Advanced Science, Volume 13, Issue 25, 4 May 2026.
This study reports Ba(Ti0.85Zr0.15)O3 nanocatalysts with enhanced polarization and oxygen‐vacancy‐rich interfaces for efficient NIR‐II photo‐pyroelectric therapy. Zr doping boosts the pyroelectric coefficient and accelerates polarization switching, while oxygen vacancies improve photothermal conversion and surface reactivity.
Yanli Huang, Haifen Luo, Jie Yin, Shuai Cao, Gaolei Dong, Zhi Tan, Chunlin Zhao, Peiye Wen, Fengwei Sun, Shan Zhang, Xianzeng Zhang, Yunlu Dai, Zhen Yang, Wei Huang   +13 more
wiley   +1 more source

High Oxygen Evolution Activity of Tungsten Bronze Oxides Boosted by Anchoring of Co2+ at Nb5+ Sites Accompanied by Substantial Oxygen Vacancy

Advanced Science, 2020
The participation of lattice oxygen in the oxygen evolution reaction (OER) process has been proved to be faster in kinetics than the mechanisms where only metal is involved, although activating the lattice oxygen in the traditional rigid structures ...
Xiaoning Li, Huan Liu, Yanhua Sun, Liuyang Zhu, Xiaofeng Yin, Shujie Sun, Zhengping Fu, Yalin Lu, Xiaolin Wang, Zhenxiang Cheng   +9 more
doaj   +1 more source