Results 81 to 90 of about 940,379 (203)

Self-Assembly Regulated Photocatalysis of Porphyrin-TiO₂ Nanocomposites

Molecules
Photoactive artificial nanocatalysts that mimic natural photoenergy systems can yield clean and renewable energy. However, their poor photoabsorption capability and disfavored photogenic electron–hole recombination hinder their production.
Yisheng Liu, Xinpeng Lv, Yong Zhong, Gaoyang Wang, Shuanghong Liu, Sudi Chen, Cai Qi, Mu He, Ping Shangguan, Zhengqun Luo, Xi Li, Jincheng Guo, Jiajie Sun, Feng Bai, Jiefei Wang   +14 more
doaj   +1 more source

Photocatalytic generation of hydrogen from water [PDF]

A concept designed to overcome the problems encountered when using photodissociation for the generation of hydrogen is discussed. The problems limiting the efficiency of photodissociation of water are the separation of the photolysis products and the ...
Bottoms, W. R., Miles, R. B.
core   +1 more source

Linewidth characteristics of Raman-shifted dye laser output at 720 and 940 nm [PDF]

, 1986
Existing DIAL systems for water vapor measurements in the troposphere operate at wavelengths near 720 nm. The use of stronger water vapor absorption lines in the range 930 to 960 nm will significantly improve DIAL measurements in the upper troposphere ...
Grossmann, B. E., Higdon, N. S., Higdon, N. S., Higdon, N. S., Higdon, N. S., Higdon, N. S., Higdon, N. S.   +6 more
core   +1 more source

Research on the influence of the powder stoichiometry of (AgxCu1-x)0.7GaSe2 on the phase composition, structure, and lifetime of photogenerated charge carriers

Конденсированные среды и межфазные границы
Purpose: This work presents a series of (AgxCu1-x)0.7GaSe2 (0 ≤ x ≤ 1) powders synthesized via a solid-state reaction using the presynthesized ternary compounds Cu0.7GaSe2, Ag0.7GaSe2 and Ag0.7GaSe2.
Vladimir V. Rakitin, Mikhail V. Gapanovich, Evgenia V. Rabenok, Dana R. Kalimullina, Denis S. Lutsenko, Ivan D. Kulemetev, Elizar N. Koltsov, Alena V. Stanchik, Valery F. Gremenok   +8 more
doaj   +1 more source

Silicon as an intermediary between renewable energy and hydrogen [PDF]

Non-renewable energy sources are becoming depleted. Air and water (our environment) are precious and will be under increased jeopardy without effective energy and environmental policies.
Auner, Norbert
core  

Classification Framework for Hydrological Resources for Sustainable Hydrogen Production with a Predictive Algorithm for Optimization

Hydrogen
Given the urgent need to decarbonize the global energy system, green hydrogen has emerged as a key alternative in the transition to renewables. However, its production via electrolysis demands high water quality and raises environmental concerns ...
Mónica Álvarez-Manso, Gabriel Búrdalo-Salcedo, María Fernández-Raga   +2 more
doaj   +1 more source

Transient Analysis of Solar Driven Hydrogen Generation System Using Industrial Waste Water

Engineering Proceedings
This study investigates an integrated solar-powered system for wastewater treatment and hydrogen production, combining solar PV, a humidification–dehumidification (HDH) system, solar thermal collectors, and electrolysis.
Yasir Ismail Saad, Muzaffar Ali, Javed Akhtar, Muhammad Usman, Muhammad Taha Manzoor, Müslüm Arıcı, Muhammad Aqil Khan   +6 more
doaj   +1 more source

Preprototype nitrogen supply subsystem development [PDF]

A nitrogen supply subsystem based on the dissociation of hydrazine into a mixture of hydrogen and nitrogen is developed. The latter is separated to provide makeup nitrogen to control the composition of spacecraft atmospheres.
Hallick, T. M., Heppner, D. B., Schubert, F. H.   +2 more
core   +1 more source

Mechanism of Hydrogen Generation by Decomposition of Lubricating Oils: Effect of Lubricating Oils on Hydrogen Brittle Flaking

Tribology Online
In the rolling bearings used in automotive electrical instruments and auxiliary devices such as alternators, it is well-known that brittle flaking occurs earlier than expected due to hydrogen embrittlement.
Motohiro Ito, Takayuki Kawamura, Tomoya Sakaguchi, Yuichi Suzuki, Hedong Zhang, Masataka Nagaoka   +5 more
doaj   +1 more source

Hydrogen generation for the Hydrogen Generation. [PDF]

Chemical & Engineering News Archive, 2003
openaire   +1 more source