Large-scale Aqueous Synthesis of Cu(In,Ga)Se2 Nanoparticles for Photocatalytic Degradation of Ciprofloxacin

2021 ◽  
Author(s):  
Bruna Gonçalves ◽  
Pedro Martins ◽  
Alec P LaGrow ◽  
Gabriela L Botelho ◽  
Laura M. Salonen ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Large Scale ◽  
Environmentally Friendly ◽  
Contaminants Of Emerging Concern ◽  
Aqueous Synthesis ◽  
Cigs Nanoparticles

Environmentally friendly synthesis of Cu(In,Ga)Se2 (CIGS) nanoparticles (NPs) is pivotal for producing sustainable photocatalytic compounds to be applied in the remediation of contaminants of emerging concern from water. To this...

Large-scale synthesis of Au–WO3 porous hollow spheres and their photocatalytic properties

2017 ◽  
Vol 7 (17) ◽  
pp. 3702-3706 ◽  
Author(s):  
Chenying He ◽  
Xia Li ◽  
Yahui Li ◽  
Junfang Li ◽  
Guangcheng Xi
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Hybrid Materials ◽  
Large Scale ◽  
Hollow Spheres ◽  
Photocatalytic Properties ◽  
Excellent Activity ◽  
Visible Light Photocatalytic

Uniform Au–WO3 porous hollow spheres have been synthesized on a large-scale by a general in situ reaction. The hybrid materials exhibit excellent activity for visible-light photocatalytic degradation of organic pollutants.

AQUEOUS SYNTHESIS OF HIGH QUANTUM YIELD AND MONODISPERSED THIOL-CAPPED CdxZn1-xTe QUANTUM DOTS BASED ON ELECTROCHEMICAL METHOD

NANO ◽  
2012 ◽  
Vol 07 (02) ◽  
pp. 1250011 ◽  
Author(s):  
JUNWEI LI ◽  
YANG JIANG ◽  
YUGANG ZHANG ◽  
DI WU ◽  
ANQI LUO ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Quantum Dots ◽  
Quantum Yield ◽  
Electrochemical Method ◽  
Large Scale ◽  
Ostwald Ripening ◽  
Visible Absorption ◽  
Aqueous Synthesis ◽  
Transmission Electron

A facile green approach has been developed to control the growth regime in the aqueous synthesis of CdxZn1-xTe semiconductor quantum dots (QDs) based on the electrochemistry method. The Low growth temperature and slow injection of Te precursor are used to prolong the diffusion controlled stage and thus suppress Ostwald ripening during the nanocrystal growth. The experimental results showed that a low concentration of Te precursor will definitely influence the growth procedure. The UV–visible absorption spectra, as well as transmission electron microscopy (TEM) shows the QDs a good monodispersity at any interval of the reaction procedure. The high-resolution transmission electron microscopy (HRTEM) images and powder X-ray diffraction (XRD) pattern suggested that the as-prepared QDs have high crystallinity and cubic structure. The size and composition-dependent fluorescent emission wavelength of the resultant CdxZn1-xTe alloyed QDs can be tuned from 460 to 610 nm, and their photoluminescent quantum yield can reach up to 70%. Especially in the wavelength range of 510–578 nm, the overall PL QYs of the as-prepared CdxZn1-xTe QDs were above 50%. The current work suggests that electrochemical method is an attractive approach to the synthesis of high-quality II-VI ternary alloyed semiconductor QDs at large-scale with a prominent cost advantage.

Facile and large scale aqueous synthesis of CdS nanoparticles at room temperature towards optoelectronic applications

2018 ◽  
Vol 5 (10) ◽  
pp. 105003 ◽  
Author(s):  
R Murugan ◽  
M Rajesh Kumar ◽  
D Sathish Chander ◽  
S Chandra Kishore ◽  
X Lei ◽  
...  
Keyword(s):  
Large Scale ◽  
Room Temperature ◽  
Cds Nanoparticles ◽  
Aqueous Synthesis ◽  
Optoelectronic Applications

Environmentally friendly, scalable exfoliation for few-layered hexagonal boron nitride nanosheets (BNNSs) by multi-time thermal expansion based on released gases

2019 ◽  
Vol 7 (46) ◽  
pp. 14701-14708 ◽  
Author(s):  
Zhi-lin Cheng ◽  
Zhan-sheng Ma ◽  
Hong-liang Ding ◽  
Zan Liu
Keyword(s):  
Thermal Expansion ◽  
Boron Nitride ◽  
Large Scale ◽  
Hexagonal Boron Nitride ◽  
Environmentally Friendly ◽  
Boron Nitride Nanosheets ◽  
Novel Approach

A novel approach to exfoliate BNNSs on a large scale via multi-time thermal expansion is described.

Application of Immobilized Titanium Dioxide as Reusable Photocatalyst on Photocatalytic Degradation of Methylene Blue

2015 ◽  
Vol 1112 ◽  
pp. 149-153 ◽  
Author(s):  
Sutisna ◽  
Mamat Rokhmat ◽  
Edy Wibowo ◽  
Riri Murniati ◽  
Khairurrijal ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Titanium Dioxide ◽  
Wastewater Treatment ◽  
Photocatalytic Degradation ◽  
Decomposition Rate ◽  
Large Scale ◽  
Polymer Surfaces ◽  
Coating Process ◽  
Direct Sunlight ◽  
Tropical Regions

Titanium dioxide particles immobilized on polypropylene copolymer surfaces (TiO2/PC) have been successfully performed using a simple electrostatic-heating coating (EHC) method. The coating process was initiated by generating electroctatic charges on the polymer surfaces, followed by adhering TiO2 particles electrostatically onto the surface and completing with pressing at 110 o C for 4 minutes. The coated sheets have been applied to degrade methylene blue (MB) solution as a wastewater model under a direct sunlight exposure. Ten layers of TiO2 coated sheets produced the optimum decomposition rate with photodegradation effectiveness up to 99.30% for 4 days exposure. These materials are also repeatedly used, indicated by nearly unchange in the photodegradation effectiveness. After four times repetition, the coated sheets still function well by decomposition up to 99 % of MB compound. The material has potential for large scale wastewater treatment in the tropical regions.

scholarly journals Facile synthesis of biomass-based carbon materials nano-Ni-based catalysts and its application in selective hydrogenation of alkynes

2021 ◽  
Author(s):  
Jianguo liu ◽  
Jiangmin Sun ◽  
Longlong Ma
Keyword(s):  
Catalytic Activity ◽  
Selective Hydrogenation ◽  
Carbon Material ◽  
Large Scale ◽  
High Efficiency ◽  
Environmentally Friendly ◽  
Metal Catalyst ◽  
High Catalytic Activity ◽  
Chemical Research ◽  
Nickel Metal

The development of high efficiency, excellent selectivity, and super activity metal catalyst for chemical selective hydrogenation of alkynes to olefin is of great significance in the field of the chemical industry. At the same time, the development of a large number of available base metal catalysts for organic conversion remains an important objective of chemical research. Herein, we report a facile preparation of a simple, high catalytic activity, environmentally friendly, and inexpensive biomass carbon material supported nano-nickel catalyst from lignin residue. The entire preparation process of the catalyst is simple, reliable, economical, and environmentally friendly, which provides a potential utilization prospect for large-scale industrial applications of biomass-based carbon material catalysts. Biomass-based lignin residues can not only reduce the high oxidation state of nickel ions into nickel nanoparticles by the in-situ reducing gas generated during the calcination process, but the mesoporous structure of lignin residue also promotes the adsorption of nickel metal, which greatly improved the catalytic activity of biomass-based Ni-based catalysts. The simple synthetic green, cost-effective and sustainable biomass-based Ni-based catalyst shows good performance in the selective hydrogenation of phenylacetylene, reaching 97.2% conversion and 84.3% styrene selectivity, respectively.

scholarly journals Hydrogen Fuel Cell Road Vehicles and Their Infrastructure: An Option towards an Environmentally Friendly Energy Transition

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 6132
Author(s):  
Olivier Bethoux
Keyword(s):  
Fuel Cell ◽  
Large Scale ◽  
Environmentally Friendly ◽  
Road Transport ◽  
Cell System ◽  
Renewable Energies ◽  
Fuel Cell Vehicle ◽  
Hydrogen Fuel Cell ◽  
Long Distance ◽  
Heavy Load

The latest pre-production vehicles on the market show that the major technical challenges posed by integrating a fuel cell system (FCS) within a vehicle—compactness, safety, autonomy, reliability, cold starting—have been met. Regarding the ongoing maturity of fuel cell systems dedicated to road transport, the present article examines the advances still needed to move from a functional but niche product to a mainstream consumer product. It seeks to address difficulties not covered by more traditional innovation approaches. At least in long-distance heavy-duty vehicles, fuel cell vehicles (FCVs) are going to play a key role in the path to zero-emissions in one or two decades. Hence the present study also addresses the structuring elements of the complete chain: the latter includes the production, storage and distribution of hydrogen. Green hydrogen appears to be one of the potential uses of renewable energies. The greener the electricity is, the greater the advantage for hydrogen since it permits to economically store large energy quantities on seasonal rhythms. Moreover, natural hydrogen might also become an economic reality pushing the fuel cell vehicle to be a competitive and environmentally friendly alternative to the battery electric vehicle. Based on its own functional benefits for on board systems, hydrogen in combination with the fuel cell will achieve a large-scale use of hydrogen in road transport, as soon as renewable energies become more widespread. Its market will expand from large driving range and heavy load vehicles.

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