Facile fabrication of direct solid-state Z-scheme g-C3N4/Fe2O3 heterojunction: a cost-effective photocatalyst with high efficiency for the degradation of aqueous organic pollutants

2018 ◽  
Vol 47 (43) ◽  
pp. 15382-15390 ◽  
Author(s):  
Junwei Wang ◽  
Xiaojun Zuo ◽  
Wei Cai ◽  
Jinwei Sun ◽  
Xinlei Ge ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Organic Pollutants ◽  
High Efficiency ◽  
Cost Effective ◽  
Facile Fabrication ◽  
Direct Solid

In situ synthesis of a cost-effective g-C3N4/Fe2O3 hybrid with enhanced photocatalytic activity for the degradation of organic pollutants based on the direct Z-scheme mechanism.

scholarly journals Electrospinning Ag-TiO2 Nanorod-Loaded Air Treatment Filters and Their Applications in Air Purification

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3369
Author(s):  
Shan-Jiang Wang ◽  
Xiao-Yang Zhang ◽  
Dan Su ◽  
Yun-Fan Wang ◽  
Chun-Meng Qian ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
High Efficiency ◽  
Synergistic Effects ◽  
Cost Effective ◽  
Electrospinning Process ◽  
Advanced Materials ◽  
Superior Performance ◽  
Efficient Treatment ◽  
Air Treatment ◽  
Tio2 Nanorod

The efficient treatment of the problem of air pollution is a practical issue related to human health. The development of multi-functional air treatment filters, which can remove various kinds of pollutants, including particulate matter (PM) and organic gases, is a tireless pursuit aiming to address the actual needs of humans. Advanced materials and nano-manufacturing technology have brought about the opportunity to change conventional air filters for practical demands, with the aim of achieving the high-efficiency utilization of photons, a strong catalytic ability, and the synergetic degradation of multi-pollutants. In this work, visible-responding photocatalytic air treatment filters were prepared and combined with a fast and cost-effective electrospinning process. Firstly, we synthesized Ag-loaded TiO2 nanorod composites with a controlled size and number of loaded Ag nanoparticles. Then, multi-functional air treatment filters were designed by loading catalysts on electrospinning nanofibers combined with a programmable brush. We found that such Ag-TiO2 nanorod composite-loaded nanofibers displayed prominent PM filtration (~90%) and the degradation of organic pollutants (above 90%). The superior performance of purification could be demonstrated in two aspects. One was the improvement of the adsorption of pollutants derived from the increase of the specific surface area after the loading of catalysts, and the other was the plasmonic hot carriers, which induced a broadening of the optical absorption in the visible light range, meaning that many more photons were utilized effectively. The designed air treatment filters with synergistic effects for eliminating both PM and organic pollutants have promising potential for the future design and application of novel air treatment devices.

In Situ Solid-State Synthesis of a AgNi/g-C3 N4 Nanocomposite for Enhanced Photoelectrochemical and Photocatalytic Activity

ChemSusChem ◽  
2016 ◽  
Vol 9 (19) ◽  
pp. 2816-2823 ◽  
Author(s):  
Nimai Bhandary ◽  
Aadesh P. Singh ◽  
Sandeep Kumar ◽  
Pravin P. Ingole ◽  
Gohil S. Thakur ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Solid State Synthesis

Preparation and enhanced visible-light photocatalytic activity of Pancake Rocks-like WO3−x/C nanocomposite

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32983-32988 ◽  
Author(s):  
Cheng Liu ◽  
Zhanxu Yang ◽  
Yue Li
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Visible Light ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

The Pancake Rocks-like WO3−x/C nanocomposite was synthesized via the in situ solid state thermolysis of dedocylamine–intercalated H2W2O7 (H2W2O7/DDA), leading to the in situ production of interlayered carbon.

Squaraine chemistry. A new approach to symmetrical and unsymmetrical photoconductive squaraines. Characterization and solid state properties of these materials

1993 ◽  
Vol 71 (4) ◽  
pp. 494-505 ◽  
Author(s):  
Kock-Yee Law ◽  
F. Court Bailey
Keyword(s):  
Solid State ◽  
Condensation Reaction ◽  
Cost Effective ◽  
Squaric Acid ◽  
Reductive Alkylation ◽  
Reaction Sequence ◽  
New Approach ◽  
Effective Synthesis ◽  
Better Than

A new approach to 1-(p-dimethylaminophenyl)-2-hydroxycyclobutene-3,4-dione (4), a precursor for the synthesis of symmetrical and unsymmetrical photoconductive squaraines, is described. In situ generation of p-nitrophenyl ketene, by the reaction of p-nitrophenylacetyl chloride and triethylamine in the presence of tetraethoxyethylene in anhydrous ether, results in a (2 + 2) cycloaddition between the ketene and the electron-rich olefin. The cycloadduct generated, 6, was hydrolyzed to give 1-(p-nitrophenyl)-2-hydroxycyclobutene-3,4-dione (5) in 51% yield. Reductive alkylation of 5 by hydrogen in the presence of formaldehyde in DMF at 50–60 °C affords 4 in 81% yield. The overall yield of 4 is 41% from tetraethoxyethylene and is significantly better than other preparative procedures of 4 based on a partial Friedel–Crafts reaction or an arylation reaction of a squaric acid derivative with an aniline, where yields ranging from 8.5% to 24% were reported. Condensations of 4 with 2 equivalents of N,N-dimethylaniline and its derivatives in refluxing 2-propanol in the presence of 6 equivalents of tributyl orthoformate yield symmetrical squaraine 1a and unsymmetrical squaraines 1b–1e. The synthesis is accomplished by a (2 + 2) cycloaddition – reductive alkylation – condensation reaction sequence and represents a new, cost-effective synthesis for photoconductive squaraines where the expensive squaric acid reactant is bypassed. The spectroscopic and the solid state properties of 1a–1e have been studied. Results show that the properties exhibited by 1a–1e are essentially identical to those exhibited by other photoconductive, symmetrical squaraines that are synthesized by other known processes. From the resemblance in solid state properties, 1a–1e are expected to be photoconductive. This has indeed been observed in preliminary experiments.

Construction of direct solid-state Z-scheme g-C3N4/BiOI with improved photocatalytic activity for microcystin-LR degradation

2017 ◽  
Vol 33 (2) ◽  
pp. 201-212 ◽  
Author(s):  
Fan Zhang ◽  
Liping Wang ◽  
Mei Xiao ◽  
Fei Liu ◽  
Xia Xu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Image Position ◽  
Direct Solid

Abstract

Facile fabrication of sponge-like hierarchically porous Ni,La–SrTiO3 templated by in situ generated carbon deposits and the enhanced visible-light photocatalytic activity

2019 ◽  
Vol 43 (19) ◽  
pp. 7409-7418 ◽  
Author(s):  
Aizhong Jia ◽  
Xiao Zhang ◽  
Fang Li ◽  
Yanji Wang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Trapping ◽  
Photocatalytic Efficiency ◽  
Scattering Of Light ◽  
Hierarchically Porous ◽  
Facile Fabrication ◽  
Hierarchical Pore ◽  
Visible Light Photocatalytic

Hierarchical pore-induced multiple internal reflections and/or scattering of light improves the capability of light trapping and thus photocatalytic efficiency.

Cobalt and nitrogen co-doped Ni3S2 nanoflowers on nickel foam as high-efficiency electrocatalysts for overall water splitting in alkaline media

2021 ◽  
Author(s):  
Xiaoqiang Du ◽  
Guangyu Ma ◽  
Xiaoshuang Zhang
Keyword(s):  
Water Splitting ◽  
High Performance ◽  
High Efficiency ◽  
Nickel Foam ◽  
Water Electrolysis ◽  
Cost Effective ◽  
Alkaline Media ◽  
Co Doping ◽  
Production Industry

The development of high-performance and cost-effective bifunctional water splitting catalysts are of enormous significance to the hydrogen production industry from water electrolysis. Herein, an in-situ Co and N co-doping method...

scholarly journals A Cost-Effective Solid-State Approach to Synthesize g-C3N4Coated TiO2Nanocomposites with Enhanced Visible Light Photocatalytic Activity

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Min Fu ◽  
Junmin Pi ◽  
Fan Dong ◽  
Qiuyan Duan ◽  
Huan Guo
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Visible Light ◽  
Environmental Remediation ◽  
Cost Effective ◽  
Solid State Method ◽  
Visible Light Photocatalytic Activity ◽  
Enhanced Absorption ◽  
Light Region ◽  
Visible Light Photocatalytic

Novel graphitic carbon nitride (g-C3N4) coated TiO2nanocomposites were prepared by a facile and cost-effective solid-state method by thermal treatment of the mixture of urea and commercial TiO2. Because the C3N4was dispersed and coated on the TiO2nanoparticles, the as-prepared g-C3N4/TiO2nanocomposites showed enhanced absorption and photocatalytic properties in visible light region. The as-prepared g-C3N4coated TiO2nanocomposites under 450°C exhibited efficient visible light photocatalytic activity for degradation of aqueous MB due to the increased visible light absorption and enhanced MB adsorption. The g-C3N4coated TiO2nanocomposites would have wide applications in both environmental remediation and solar energy conversion.

Facile fabrication of a NiO/Ag3PO4 Z-scheme photocatalyst with enhanced visible-light-driven photocatalytic activity

2020 ◽  
Vol 44 (29) ◽  
pp. 12806-12814 ◽  
Author(s):  
Ning Li ◽  
Yanlei He ◽  
Jiajia Lian ◽  
Qingyun Liu ◽  
Xianxi Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Organic Pollutants ◽  
Photocatalytic Performance ◽  
Visible Light Driven ◽  
Facile Fabrication

The photocatalytic performance of Z-scheme NiO/Ag/Ag3PO4 was evaluated by degrading organic pollutants under visible light.

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