scholarly journals Enhanced photodegradation of diphenhydramine in aqueous solution containing natural sand particles

RSC Advances ◽  
2020 ◽  
Vol 10 (29) ◽  
pp. 17228-17234
Author(s):  
Chunlin Yi ◽  
Lihong Song ◽  
Qingfeng Wu ◽  
Zhaohui Li ◽  
Weibin Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Free Radicals ◽  
Solar Irradiation ◽  
Natural Sand ◽  
Sand Particles ◽  
Simulated Solar Irradiation

Natural sand particles induced the generation of free radicals under simulated solar irradiation, resulting in the enhanced photodegradation of diphenhydramine.

Triethanolamine (TEA) Aqueous Solution as an Electrolyte Promoter in CO2 Photoelectro-Conversion under Simulated Solar Irradiation Assisted by Cu-Doped Graphene-Titania Catalyst

2015 ◽  
Vol 1109 ◽  
pp. 448-450 ◽  
Author(s):  
Md. Rakibul Hasan ◽  
Sharifah Bee binti O. A. Abdul Hamid ◽  
Wan Jeffrey Basirun
Keyword(s):  
Aqueous Solution ◽  
Sol Gel ◽  
Reduction Process ◽  
Charge Transfer Resistance ◽  
Vital Role ◽  
Solar Irradiation ◽  
Secondary Amines ◽  
Transfer Resistance ◽  
Doped Graphene ◽  
Simulated Solar Irradiation

Copper doped graphene-TiO2 nanocomposite were prepared via sol-gel process and embedded onto ITO coated glass films using electrophoretic deposition technique. The catalyst films were used for photoelectrocatalysis (PEC) of CO2 induced under simulated solar irradiation. Triethanolamine (TEA) aqueous solution was used as an electrolyte in this experiment. CO2 capture in the electrolyte solution plays vital role in the PEC process and in this case, the effect of TEA was investigated. Although the absorption rate of CO2 is lower in TEA solution than primary or secondary amines, CO2 loading was found higher in the solution. Less reactivity of TEA towards CO2 was also observed. The impedance results showed that, increased concentration of TEA in aqueous solution helps to reduce charge transfer resistance and thus facilitates CO2 reduction process.

scholarly journals Fluorescent Whitening Agents. II. Covalent Binding to Proteins during Irradiation by Sunlight

1974 ◽  
Vol 27 (1) ◽  
pp. 23 ◽  
Author(s):  
LA Holt ◽  
B Milligan
Keyword(s):  
Aqueous Solution ◽  
Solid State ◽  
Bovine Serum Albumin ◽  
Photochemical Reaction ◽  
Covalent Binding ◽  
Covalent Bond ◽  
Solar Irradiation ◽  
Irreversible Binding ◽  
Fluorescent Whitening Agents ◽  
Simulated Solar Irradiation

Simulated solar irradiation of wool, silk, bovine serum albumin and apomyoglobin in the presence of radioactively labelled fluorescent whitening agents of the bistriazinylaminostilbene and pyrazoline types results in the irreversible binding of radioactivity to the protein. This photochemical reaction occurs both in the solid state and in aqueous solution, and is believed to result in the formation of a covalent bond between the whitener (or a photodecomposition product) and the protein.

A Thorough Investigation of Photo-catalytic Degradation of ortho and para-Nitro Phenols in binary mixtures: New Insights into Evaluating Degradations Progress Using Chemometrics Approaches

2021 ◽  
Author(s):  
S. Maryam Sajjadi ◽  
Zeinab Asadollah-pour ◽  
S. Hashem Sajjadi ◽  
S. Nasrin Nabavi ◽  
Zahra Abed ◽  
...  
Keyword(s):  
Binary Mixtures ◽  
Zno Nanoparticles ◽  
Catalytic Degradation ◽  
Solar Irradiation ◽  
Photo Catalyst ◽  
Decomposition Processes ◽  
Simulated Solar Irradiation ◽  
Photo Decomposition

In this study, photocatalytic degradations of 2-nitrophenol and 4-nitrophenol were carried out efficiently using ZnO nanoparticles photo-catalyst under simulated solar irradiation. The photo-decomposition processes were optimized simultaneously by employing central...

Photolytic degradation of quinalphos in natural waters and on soil matrices under simulated solar irradiation

Chemosphere ◽  
2006 ◽  
Vol 64 (8) ◽  
pp. 1375-1382 ◽  
Author(s):  
C. Gonçalves ◽  
A. Dimou ◽  
V. Sakkas ◽  
M.F. Alpendurada ◽  
T.A. Albanis
Keyword(s):  
Natural Waters ◽  
Solar Irradiation ◽  
Photolytic Degradation ◽  
Simulated Solar Irradiation

Rapid Degradation of Rhodamine B over Cyclodextrin Modified TiO2

2011 ◽  
Vol 694 ◽  
pp. 764-768
Author(s):  
Xu Zhang ◽  
Nan Sheng Deng
Keyword(s):  
Electron Transfer ◽  
Excited States ◽  
Rhodamine B ◽  
Self Assembly ◽  
Initial Rate ◽  
Solar Irradiation ◽  
Pollutant Degradation ◽  
Rapid Degradation ◽  
Hybrid Nanomaterial ◽  
Simulated Solar Irradiation

A novel β-cyclodextrin (β-CD) grafted titanium dioxide (TiO2/β-CD) was synthesized through photo-induced self assembly methods, and its structure was characterized. The TiO2/β-CD hybrid nanomaterial showed high photoactivity under visible light irradiation (λ  400 nm and/or λ  420 nm) and simulated solar irradiation (λ  365 nm). Photodegradation of rhodamine B followed the Langmuir–Hinshelwood kinetics model. The initial rate R0 of rhodamine B degradation increased by 4.6, 2.4 and 1.5 times in the irradiation conditions of λ  420 nm, λ  400 nm and λ  365 nm, respectively. β-CD increased the lifetimes of the excited states of the unreactive guests and facilitated the electron transfer from the excited dye to the TiO2 conduction band, which enhanced the dye pollutant degradation.

Red-emitting Ca1-xSrxS:Eu2+ Phosphors as Light Converters for Plant-growth Applications

2011 ◽  
Vol 1342 ◽  
Author(s):  
Qi Xia ◽  
Miroslaw Batentschuk ◽  
Andres Osvet ◽  
Peter Richter ◽  
Donat P. Häder ◽  
...  
Keyword(s):  
Broad Band ◽  
Solar Spectrum ◽  
Solar Irradiation ◽  
Solid State Reactions ◽  
Photon Flux ◽  
Spectral Modification ◽  
Simulated Solar Irradiation ◽  
Photosynthetic Activities ◽  
The Eu ◽  
Spinach Leaves

ABSTRACTA series of Ca1-xSrxS:Eu2+y mol% phosphors were synthesized with solid state reactions and with various Ca/Sr ratio and Eu2+ doping concentrations. The influences of the lattice composition and the Eu2+ doping level on photoluminescent properties were analyzed. With doping concentrations between 0.1 to 3 mol%, concentration quenching takes place leading to the decrease of luminance; the emission maxima are also red-shifted. Further, this work reports enhanced photosynthetic activities of intact spinach leaves due to spectral modification of simulated solar irradiation by one synthesized phosphor (Ca0.4Sr0.6S:Eu1 mol%). The CO2 assimilation rates of intact spinach leaves were monitored with an effective homemade photosynthesis measurement system with controlled light conditions. The phosphor could efficiently convert the photosynthetically less active green part of the solar spectrum into the red, with a broad-band red emission centered at 650 nm and a halfband-width of 68 nm, giving an excellent match with the absorption spectrum of spinach chloroplasts. By careful referencing the photon flux, we found an enhanced photosynthetic activities by about 30 % due to the emission of the phosphor.

Formation of α-Keto Acids from α-Amino Acids by the Action of Free Radicals in Aqueous Solution

Science ◽  
1951 ◽  
Vol 114 (2964) ◽  
pp. 412-413
Author(s):  
G. R. A. Johnson ◽  
George Scholes ◽  
Joseph Weiss
Keyword(s):  
Aqueous Solution ◽  
Amino Acids ◽  
Free Radicals ◽  
Keto Acids

g-C3N4 nanosheets decorated with carbon dots and CdS nanoparticles: Novel nanocomposites with excellent nitrogen photofixation ability under simulated solar irradiation

2019 ◽  
Vol 45 (2) ◽  
pp. 2542-2555 ◽  
Author(s):  
Hadi Diarmand-Khalilabad ◽  
Aziz Habibi-Yangjeh ◽  
Davod Seifzadeh ◽  
Soheila Asadzadeh-Khaneghah ◽  
Elham Vesali-Kermani
Keyword(s):  
Carbon Dots ◽  
Solar Irradiation ◽  
Cds Nanoparticles ◽  
Simulated Solar Irradiation
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