Results 91 to 100 of about 485,699 (306)

Catalyst Acceleration for Gradient-Based Non-Convex Optimization [PDF]

, 2017
We introduce a generic scheme to solve nonconvex optimization problems using gradient-based algorithms originally designed for minimizing convex functions.
Drusvyatskiy, Dmitriy, Harchaoui, Zaid, Lin, Hongzhou, Mairal, Julien, Paquette, Courtney   +4 more
core   +1 more source

Classical Keggin intercalated into layered double hydroxides: facile preparation and catalytic efficiency in Knoevenagel condensation reaction [PDF]

, 2015
The family of polyoxometalate (POM) intercalated layered double hydroxides (LDHs) composite materials has shown great promise for the design of functional materials with numerous applications.
Fang, Yanjun, Jia, Yueqing, Miras, Haralampos N., Song, Yu-Fei, Zhang, Yingkui   +4 more
core   +1 more source

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

Advanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou, Yu Mao, Mengyao Chang, Ziyun Wang, Wenke Xie, Cuizhu Ye, Shanghai Wei, Lars Thomsen, Geoffrey I. N. Waterhouse   +8 more
wiley   +1 more source

Operando Temperature Sensing at the Actual Electrocatalytic Interface by Nanodiamond Quantum Sensors

Advanced Functional Materials, EarlyView.
By integrating a wide‐field microscope with a custom‐designed electrolyzer, nanoscale temperature changes can be recorded in situ during the electrolysis process without interfering with ongoing electrochemical reactions. This method establishes a correlation between the interface temperature and specific electrochemical reactions, making the measured ...
Zan Li, Hui Wang, Mingzhong Ai, Yao Gao, Xinyi Feng, Junchen Ye, Ying Wang, Quan Li   +7 more
wiley   +1 more source

Condensation of Triethoxysilyl-Terminated Polystyrene by Basic Catalysts.

KOBUNSHI RONBUNSHU, 1992
トリエトキシシリル末端ポリスチレン (TESi-PS) の縮合反応をいろいろなアルカリ触媒を用いて行った. 縮合反応は, アミンのような弱アルカリを触媒とした場合にはほとんど起こらず, 水酸化アルカリなどの強アルカリの場合に進行した. 強アルカリによる縮合反応の時間一縮合物生成率曲線には極大値が存在し, 長時間の反応で縮合物の生成率はゼロとなった. 例えば, NaOH触媒では縮合物の生成率は, 60℃4時間の反応で62%に達するが, 24時間以内には見かけ上ゼロとなった. これは, いったん生成した縮合物からポリスチレン部が脱離する反応が副反応として起こるためであることがわかった.
Keita SUZUKI, Gunpei KATSUMURA, Yoshiharu KONDO, Jun-ichi OKU, Mikio TAKAKI   +4 more
openaire   +2 more sources

Impact of Surface Functionalization on NV Quantum Properties: Implications for Biosensing with Fluorescent Nanodiamonds

Advanced Functional Materials, EarlyView.
Fluorescent nanodiamonds (fNDs) have emerged as an invaluable quantum sensing platform for biological and biochemical systems. This paper investigates the influence of common surface functionalization strategies for bioconjugation on the quantum properties of nitrogen vacancy (NV) centers in nanodiamonds.
Anja Sadžak, Iván Pérez, Mateja Guimarães, Lukas Spantzel, Fedor Jelezko, Michael Börsch, Anke Krueger   +6 more
wiley   +1 more source

Amide Functionalized Mesoporous MOF LOCOM-1 as a Stable Highly Active Basic Catalyst for Knoevenagel Condensation Reaction. [PDF]

ACS Omega, 2023
Afaq S, Akram MU, Malik WMA, Ismail M, Ghafoor A, Ibrahim M, Nisa MU, Ashiq MN, Verpoort F, Chughtai AH.   +9 more
europepmc   +1 more source

Facilitating Expedited Drug Approval– the Past, Present, and Future of Clinical Trials for Pediatric Rheumatic Disease

Arthritis Care &Research, Accepted Article.
Pamela F. Weiss, Hermine I. Brunner
wiley   +1 more source

Toward Scalable Solutions for Silver‐Based Gas Diffusion Electrode Fabrication for the Electrochemical Conversion of CO2 – A Perspective

Advanced Functional Materials, EarlyView.
In this study, the preparation techniques for silver‐based gas diffusion electrodes used for the electrochemical reduction of carbon dioxide (eCO2R) are systematically reviewed and compared with respect to their scalability. In addition, physics‐based and data‐driven modeling approaches are discussed, and a perspective is given on how modeling can aid ...
Simon Emken, K. Ashoke Raman, Alexander Bauer, Violeta Karyofylli, Eva Jodat, André Karl, Rüdiger‐A. Eichel   +6 more
wiley   +1 more source

Facile one-pot synthesis of CuO–Bi2O3/MgAl2O4 catalyst and its performance in the ethynylation of formaldehyde

Heliyon
The CuO–Bi2O3/MgAl2O4 catalyst was synthesized via one-pot synthesis and used to catalyze formaldehyde (HCHO) ethynylation. Coprecipitation using Cu2+, Bi3+, Mg2+, and Al3+ nitrates and NaOH generated Cu and Bi oxides and spinel MgAl2O4 phase.
Gang Guan, Fengyun Ma, Ping Luo, Xiaolin Zhang, Xiaoding Li, Guangxing Li   +5 more
doaj   +1 more source