Acetic Acid Accelerated Visible-Light Photoredox CatalyzedN-Demethylation ofN,N-Dimethylaminophenyl Derivatives

2016 ◽  
Vol 359 (4) ◽  
pp. 687-692 ◽  
Author(s):  
Guolin Wu ◽  
Yazhen Li ◽  
Xuemei Yu ◽  
Yu Gao ◽  
Haijun Chen
Keyword(s):  
Acetic Acid ◽  
Visible Light

Photocatalytic degradation of acetic acid in the presence of visible light-active TiO 2 -reduced graphene oxide photocatalysts

2017 ◽  
Vol 280 ◽  
pp. 108-113 ◽  
Author(s):  
A.W. Morawski ◽  
E. Kusiak-Nejman ◽  
A. Wanag ◽  
J. Kapica-Kozar ◽  
R.J. Wróbel ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Graphene Oxide ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Visible Light Active

scholarly journals Synthesis of a plasmonic AgCl and oxygen-rich Bi24O31Cl10 composite heterogeneous catalyst for enhanced degradation of tetracycline and 2,4-dichlorophenoxy acetic acid

RSC Advances ◽  
2021 ◽  
Vol 11 (58) ◽  
pp. 36760-36768
Author(s):  
Dorcas Adenuga ◽  
Sifiso Skosana ◽  
Shepherd Tichapondwa ◽  
Evans Chirwa
Keyword(s):  
Acetic Acid ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Heterogeneous Catalyst ◽  
Dichlorophenoxy Acetic Acid ◽  
Enhanced Degradation

Photocatalytic degradation of tetracycline and 2,4-dichlorophenoxy acetic acid using AgCl/Bi24O31Cl10 photocatalyst in visible light.

scholarly journals ANALISIS SIFAT OPTIK KLOROFIL PADA EKSTRAK DAUN MENGGUNAKAN UV-VIS SPEKTROMETER SEBAGAI STUDI AWAL APLIKASI DYE SENSITIZER

2018 ◽  
Vol 3 (2) ◽  
pp. 101-104
Author(s):  
Dona Dianisya ◽  
Amalia Dini Silmina ◽  
Novan Purwanto ◽  
Isnaeni Isnaeni ◽  
Iwan Sugihartono
Keyword(s):  
Acetic Acid ◽  
Visible Light ◽  
Ultraviolet Light ◽  
Leaf Extract ◽  
Carica Papaya ◽  
Ricinus Communis ◽  
Ultrasonic Test ◽  
Uv Absorption ◽  
Light Spectrum ◽  
Spinach Leaf

ABSTRAK Telah dilakukan studi ekstraksi awal klorofil dari 3 jenis daun yaitu daun bayam (Amarantus), daun pepaya (Carica papaya), dan daun jarak (Ricinus communis). Ekstraksi dilakukan dengan teknik penghancuran menggunakan blender. Pelarut yang digunakan adalah isopropanol, asam asetat, dan DI water. Hasil penyaringan ekstrak daun diperoleh larutan sebayak 75 ml untuk setiap larutan ekstrak klorofil. Uji Ultrasonic Visible memberikan konfirmasi adanya penyerapan di rentang cahaya ultraviolet dan cahaya tampak. Sementara itu, serapan klorofil teramati di rentang cahaya tampak. Apabila dibandingkan serapan UV dan cahaya tampak, pada larutan ekstrak masih mengandung banyak gugus asam dibandingkan klorofil yang di ekstrak. Kata-kata kunci: daun bayam, daun pepaya, daun jarak, absorbansi, klorofil ABSTRACT We studied for chlorophyll extract from 3 leaf types that are spinach leaf (Amarantus), papaya leaf (Carica papaya), and castor leaf (Ricinus communis). The extraction is done by using a blender. The solvents used are isopropanol, acetic acid, and DI water. The result of leaf extract was obtained 75 ml solution for each solution of chlorophyll extract. The Visible Ultrasonic Test confirms absorption in the range of ultraviolet light and visible light. Meanwhile, chlorophyll uptake is observed in the visible light spectrum. When compared to UV absorption and visible light, in the extract solution still contains a lot of acid groups than the chlorophyll extracted. Keywords: spinach leaf, papaya leaf, Castor leaf, absorbance, chlorophyll.

scholarly journals NEW TETRA (1,4-DITHIN)PORPHYRAZINES AND THEIR APPLICATION AS PHOTOCATALYSTS FOR PURIFYING ENVIRONMENTAL WATERS: AN APPROACH TO GREEN CHEMISTRY

2018 ◽  
Vol 15 (30) ◽  
pp. 259-267
Author(s):  
H. H. ABDEL-RAZIK ◽  
H. A. ALMAHY ◽  
Y. A. EL-BADRY
Keyword(s):  
Acetic Acid ◽  
Solar Energy ◽  
Green Chemistry ◽  
Visible Light ◽  
Photocatalytic Oxidation ◽  
Metal Salt ◽  
Average Yield ◽  
Environmental Waters ◽  
Air Atmosphere ◽  
Visible Light Range

2,3-Dichloro-5,6-dimethylbenzoquinone reacted with di(sodiothio)maleonitrileto produce heterocyclic thianone, 6,7-dimethyl-5,8-dioxo-5,8-dihydro-1,4-benzodithin-2,3-dicarbonitrile which was cyclo-tetramerizedin the presence of lithium/pentanol and acetic acid producing tetra 6,7-dimethyl-5,8-dioxo-5,8-dihydro-1,4benzodithin-porphyrazine (2H-Pz). Likewise, the dicarbonitrile compound was cyclo-tetramerized in the presence of metal salt and quinoline affording tetra 6,7-dimethyl-5,8-dioxo-5,8-dihydro-1,4-benzodithinporphyrazinato-metal II (M-Pz), M is Co, Ni or Zn. Photoactivity of the synthesized porphyrazines was reached out to the visible light range. The prepared porphyrazines showed efficient sensitized catalysts by using of solar energy for the completely photocatalytic oxidation of thiophenol and benzyl thiol to their disulfides (with an average yield of 93% and 90%, respectively) in the presence of air atmosphere within 20 minutes.

Visible-Light-Induced Aerobic Oxidation of Benzylic C(sp3)–H of Alkylarenes Promoted by DDQ, tert-Butyl Nitrite, and Acetic Acid

Synlett ◽  
2018 ◽  
Vol 30 (02) ◽  
pp. 218-224 ◽  
Author(s):  
Zhenlu Shen ◽  
Decheng Pan ◽  
Yiqing Wang ◽  
Meichao Li ◽  
Xinquan Hu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Visible Light ◽  
Aerobic Oxidation ◽  
Catalyst Loading ◽  
Thermal Methods ◽  
Oxidation Method ◽  
Tert Butyl ◽  
Mild Conditions ◽  
Low Catalyst Loading ◽  
Visible Light Photocatalytic

A visible-light photocatalytic aerobic oxidation of benzylic C(sp3)–H bonds proceeded in the presence of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, tert-butyl nitrite, and acetic acid. Advantages of this aerobic oxidation method include its relatively mild conditions, the use of visible-light irradiation instead of conventional thermal methods, the use of a low catalyst loading, and the ability to oxidize a range of alkyl­arenes, including xanthenes, thioxanthenes, and 9,10-dihydroacridines, to the corresponding ketones in excellent yields.

scholarly journals Plasmonic Titania Photocatalysts Active under UV and Visible-Light Irradiation: Influence of Gold Amount, Size, and Shape

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Ewa Kowalska ◽  
Sven Rau ◽  
Bunsho Ohtani
Keyword(s):  
Acetic Acid ◽  
Visible Light ◽  
Surface Area ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Methanol Dehydrogenation ◽  
Size And Shape ◽  
Anatase Titania ◽  
Rutile Titania ◽  
Gold Nps

Plasmonic titania photocatalysts were prepared by titania modification with gold by photodeposition. It was found that for smaller amount of deposited gold (≤0.1 wt%), anatase presence and large surface area were beneficial for efficient hydrogen evolution during methanol dehydrogenation. After testing twelve amounts of deposited gold on large rutile titania, the existence of three optima for 0.5, 2 and >6 wt% of gold was found during acetic acid degradation. Under visible light irradiation, in the case of small gold NPs deposited on fine anatase titania, the dependence of photoactivity on gold amount was parabolic, and large gold amount (2 wt%), observable as an intensively coloured powder, caused photoactivity decrease. While for large gold NPs deposited on large rutile titania, the dependence represented cascade increase, due to change of size and shape of deposited gold with its amount increase. It has been thought that spherical/hemispherical shape of gold NPs, in comparison with rod-like ones, is beneficial for higher level of photoactivity under visible light irradiation. For all tested systems and regardless of deposited amount of gold, each rutile Au/TiO2photocatalyst of large gold and titania NPs exhibited much higher photoactivity than anatase Au/TiO2of small gold and titania NPs.

2‐Oxo‐2( tert ‐butyldimethylsilyl)Acetic Acid (DKSi‐COOH) as a New Water‐Soluble Visible Light Type I Photoinitiator for Free Radical Polymerization

2020 ◽  
Vol 221 (4) ◽  
pp. 1900495
Author(s):  
Julie Kirschner ◽  
Julien Paillard ◽  
Bernadette Graff ◽  
Jean‐Michel Becht ◽  
Joachim E. Klee ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Free Radical ◽  
Visible Light ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Water Soluble ◽  
Type I
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