Results 51 to 60 of about 121,480 (307)

Preparation of N-doped carbon dots based on starch and their application in white LED [PDF]

, 2018
N-doped carbon dots (CDs) were synthesized simply and economically by a one-step hydrothermal method using starch as a carbon source and ethylenediamine (EDA) as a nitrogen dopant.
Chen, Yong, Liu, Xinghua, Liu, Xuguang, Yang, Yongzhen, Zheng, Jingxia   +4 more
core   +2 more sources

HYDROTHERMAL TREATMENT OF EUCALYPTUS GRANDIS WOOD

FLORESTA, 2019
Among the technological alternatives to improve the quality and use of eucalyptus wood is heat treatment, as the wood has some features that may limit its use, such as dimensional instability, high anisotropy, and heterogeneous coloring. This study is aimed at evaluating the effect of time of hydrothermal treatment on physical, chemical, and mechanical
Fabiana Paiva De Freitas, Ana Márcia Macedo Ladeira Carvalho, Angélica De Cássia Oliveira Carneiro, Benedito Rocha Vital, Mateus Alves De Magalhães, Mariana Fonseca Xisto   +5 more
openaire   +2 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Electrochemical Properties of Nitrogen and Oxygen Doped Reduced Graphene Oxide

Energies, 2020
Carbon nanostructures are promising electrode materials for energy storage devices because of their unique physical and chemical properties. Modification of the surface improves the electrochemical properties of those materials because of the changes in ...
Sean J. Hartmann, Anna A. Iurchenkova, Tanja Kallio, Ekaterina O. Fedorovskaya   +3 more
doaj   +1 more source

Hydrothermal Treatment of Tricobalt Orthophosphate Octahydrate

Journal of the Ceramic Association, Japan, 1986
リン酸三コバルト八水和物を150°-350℃の純水飽和水蒸気圧条件下で水熱処理した.リン酸三コバルト八水和物を150℃, 120時間の水熱条件で処理すると青みの明るい赤紫色の板状晶: リン酸三コバルト3.5水和物に, 200℃, 48時間の場合は紫みの暗い赤色の粒状晶: リン酸三コバルト二水和物に, 250℃, 72時間の場合は赤みの明るい紫色の針状晶: リン酸三コバルト一水和物に, 350℃, 120時間の場合は赤みの深い青紫色の板状晶: リン酸三コバルトに, 変化した. 示差熱分析における脱水のための吸熱ピーク温度は, リン酸三コバルト3.5水和物の場合393℃, リン酸三コバルト二水和物は470℃, リン酸三コバルト一水和物566℃であった.
Yoshitomo TODA, Kazuaki HASHIMOTO, Koshiro HASHIMOTO, Yasuo ARAI   +3 more
openaire   +2 more sources

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Effects of Surface Structure and Chemical Composition of Binary Ti Alloys on Cell Differentiation

Metals, 2016
Binary Ti alloys containing Fe, Mo, V and Zr were micro-arc oxidized and hydrothermally treated to obtain micro- and nano-porous layers. This study aimed to investigate cell differentiation on micro and micro/nanoporous oxide layers of Ti alloys.
Ok-Sung Han, Moon-Jin Hwang, Yo-Han Song, Ho-Jun Song, Yeong-Joon Park   +4 more
doaj   +1 more source

The Growth of Extended Melem Units on g-C₃N₄ by Hydrothermal Treatment and Its Effect on Photocatalytic Activity of g-C₃N₄ for Photodegradation of Tetracycline Hydrochloride under Visible Light Irradiation

Nanomaterials, 2022
In this work, the growth of extended tri-s-triazine units (melem units) on g-C3N4 (CN) by hydrothermal treatment and its effect on the photodegradation efficiency of tetracycline hydrochloride (TC) is investigated.
Thi Van Anh Hoang, Phuong Anh Nguyen, Won Mook Choi, Eun Woo Shin   +3 more
doaj   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source