Results 51 to 60 of about 5,191,821 (287)

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

open access: yesAdvanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu   +3 more
wiley   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

open access: yesAdvanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim   +5 more
wiley   +1 more source

A Thermoreversible Gelation Pathway to Plant Cuticle‐Inspired Biopolymer Aerogel Monoliths Based on Network‐Spherulitic Crystal Assemblies

open access: yesAdvanced Materials, EarlyView.
To address functionality limitations in plant‐based and industrially compostable polymer aerogels, this work introduces bio‐inspired aerogels with broadened functionality. Inspired by functional plant tissues, lightweight biopolymer aerogels based on exclusively stereocomplex crystals are fabricated, featuring hierarchically macro‐/meso‐porous ...
Anthony V. Tuccitto   +10 more
wiley   +1 more source

Bottle-around-the-ship: A method to encapsulate enzymes in ordered mesoporous materials

open access: yes, 2010
Lipase has been encapsulated in ordered mesoporous materials in a one-step process. The procedure is simple and leads to well structured materials with enzyme loadings higher than those obtained through the post-synthesis approach.
Urrego, Sergio   +11 more
core   +1 more source

Macro-mesoporous silicas complex and the carbon replica [PDF]

open access: yes, 2007
Novel macroporous silicas with ordered mesoporous wall structures ( 15 nm in pore size) have been synthesized by finely balancing the emulsification of the oil phase with the self-assembly of the amphiphilic block copolymers.
Bao, Xinhe   +11 more
core   +1 more source

Interface‐Mediated Catalysis for Improved Hydrogen Storage in Reactive Hydride Composites

open access: yesAdvanced Materials, EarlyView.
Catalyst–hydride interfaces are engineered in Co@C‐ and Ni@C‐modified 2LiH + MgB2 reactive hydride composites to accelerate hydrogen uptake and release. Multiscale scattering, in‐situ synchrotron radiation powder x‐ray diffraction and density functional theory calculations reveal the structural and electronic origin of the catalytic enhancement ...
Yuanyuan Shang   +12 more
wiley   +1 more source

Mesoporous carbon materials: synthesis methods, properties, and advanced applications

open access: yesFrontiers in Materials
Mesoporous carbon materials have great potential in energy storage, catalysis and adsorption separation due to their unique pore size distribution, high specific surface area and excellent stability.
Zhou Wei, Zhi Yanfei, Wang Jiao
doaj   +1 more source

Pulsed Oxidative–Reductive Electrolysis Over Dual Cu and Co Single‐Atom Sites for Urea Electrosynthesis

open access: yesAdvanced Materials, EarlyView.
Alternating oxidative–reductive pulses synchronize CO2‐derived *CO and NH3‐derived *NHx intermediates over dual Cu and Co single‐atom sites, enabling urea and ethyl urea formation with a total C─N Faradaic efficiency of 42 ± 4%. In situ spectroscopy and theoretical calculations elucidate complementary Cu and Co functions, while oxidative controls ...
Putri Ramadhany   +8 more
wiley   +1 more source

Functionalized Mesoporous Silica Membranes for CO2 Separation Applications

open access: yesJournal of Chemistry, 2015
Mesoporous silica molecular sieves are emerging candidates for a number of potential applications involving adsorption and molecular transport due to their large surface areas, high pore volumes, and tunable pore sizes.
Hyung-Ju Kim   +5 more
doaj   +1 more source

Structure study of the tri-continuous mesoporous silica IBN-9 by electron crystallography

open access: yes, 2011
High resolution electron microscopy (HRTEM) has unique advantages for structural determination of nano-sized porous materials compared to X-ray diffraction, because it provides the important structure factor phase information which is lost in diffraction.
Junliang Sun   +11 more
core   +1 more source

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