Results 241 to 250 of about 154,019 (297)

Effect of Ammonium Polyphosphate/Silicate Content on the Postfire Mechanics of Epoxy Glass‐Fiber Composites Using Facile Chocolate Bar‐Inspired Structures

Fire and Materials, Volume 49, Issue 3, Page 329-346, April 2025.
ABSTRACT This study investigates the postfire mechanical properties of epoxy glass‐fiber reinforced composites (EP GFRCs) using increasing concentrations of ammonium polyphosphate (APP) and inorganic silicate (InSi) to modify the char and fire residue.
Sruthi Sunder, Maria Jauregui Rozo, Sneha Inasu, Dietmar Meinel, Bernhard Schartel, Holger Ruckdäschel   +5 more
wiley   +1 more source

Recent Progress on Enzyme Immobilization: Materials, Strategies, and Applications

Food Bioengineering, EarlyView.
Enzyme immobilization technology has undergone substantial evolution driven by advances in materials science. This review systematically examines the recent advances in enzyme immobilization since 2024, with a focused analysis of five major categories of enzyme carriers including covalent organic framework, metal‐organic frameworks, polymers, carbon ...
Shuran Wang, Ruoke Li, Yixuan Xie, Hanya Zhang, Xiaoyu Huang, Siwei Chen, Weixin Xu, Yueling Liu   +7 more
wiley   +1 more source

Electronic jelly: Engineering the mechanics of hydrogels for flexible electronics

FlexMat, EarlyView.
By unifying mechanical reinforcement strategies—double networks, structural ordering, and dynamic interactions—this review demonstrates how engineered hydrogels can transcend their fragility to achieve the strength, toughness, and reliability required for flexible electronics, including wearable sensors, energy devices, and soft robotic systems ...
Tianfu Zheng, Chongling Cheng, Dayang Wang   +2 more
wiley   +1 more source

Rational design of Ni‐based catalysts for methane dry reforming: Recent advances and future perspectives

FlexMat, EarlyView.
Addressing the challenges inherent in dry reforming of methane (DRM), this paper focuses on the structural design and performance optimization of Ni‐based catalysts. The modulation strategies for DRM are systematically reviewed across four dimensions: the micromorphology of active metals, metal‐support interactions, electronic modifications by ...
Bowei Cao, Junlei Zhang, Wanglei Wang
wiley   +1 more source

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

FlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan, Hao Li, Mengna Yu, Huiyin Wang, Jiangqiang He, Menghan Wu, Quanyou Feng, Linghai Xie   +7 more
wiley   +1 more source

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Biologically Formed Mesoporous Amorphous Silica

Journal of the American Chemical Society, 2009
Mesoporous crystalline silica has attracted the attention of scientists due to its extraordinary functionalities. In particular, substantial progress has been made in the synthesis of mesoporous crystalline silica using biomimetic approaches under ambient conditions.
Thomas Höche, Yuanzheng Yue
exaly   +4 more sources

Amorphous silica-like carbon dioxide

Nature, 2006
Among the group IV elements, only carbon forms stable double bonds with oxygen at ambient conditions. At variance with silica and germania, the non-molecular single-bonded crystalline form of carbon dioxide, phase V, only exists at high pressure. The amorphous forms of silica (a-SiO2) and germania (a-GeO2) are well known at ambient conditions; however,
Santoro, M, Gorelli, Fa, Bini, R, Ruocco, G, Scandolo, S, Crichton, Wa   +5 more
openaire   +4 more sources

Uranium Incorporation into Amorphous Silica

Environmental Science & Technology, 2014
High concentrations of uranium are commonly observed in naturally occurring amorphous silica (including opal) deposits, suggesting that incorporation of U into amorphous silica may represent a natural attenuation mechanism and promising strategy for U remediation. However, the stability of uranium in opaline silicates, determined in part by the binding
Michael S, Massey, Juan S, Lezama-Pacheco, Joey M, Nelson, Scott, Fendorf, Kate, Maher   +4 more
openaire   +2 more sources

Acidity Characterization of Amorphous Silica–Alumina

The Journal of Physical Chemistry C, 2012
Surface characterization of amorphous silica-alumina (ASA) by COads IR, pyridine(ads) IR, alkylamine temperature-programmed desorption (TPD), Cs+ and Cu(EDA)(2)(2+) exchange, H-1 NMR, and m-xylene isomerization points to the presence of a broad range of Bronsted and Lewis acid sites.
Hensen, Emiel J, Poduval, Dilip G, Degirmenci, Volkan, Ligthart, D. A, Chen, Wenbin, Mauge, Françoise, Rigutto, Marcello S, Veen, J. A   +7 more
openaire   +4 more sources

THE SURFACE ENERGIES OF AMORPHOUS SILICA AND HYDROUS AMORPHOUS SILICA

Canadian Journal of Chemistry, 1956
The total surface energies (or, more strictly, surface enthalpies) of amorphous silica and hydrous amorphous silica were determined by measuring the heats of solution in a mixture of nitric acid and hydrofluoric acid of samples having differing specific surface areas and bound water contents, and by measuring the surface areas by the B.E.T.
Stephen Brunauer, D. L. Kantro, C. H. Weise   +2 more
openaire   +1 more source