Asian Journal of Chemistry

Journal Information
ISSN / EISSN: 09707077 / 0975427X
Total articles ≅ 9,082

Latest articles in this journal

Priyanka Shrivastava, Vibha Malviya, Anjali Yadav, Payal Jain, Ruchika Malviya, , A.K. Sinha
Published: 25 November 2022
Asian journal of Chemistry, Volume 34, pp 3308-3312; https://doi.org/10.14233/ajchem.2022.23945

Abstract:
Sludge sample collected from sewage treatment plant was used to develop an effective adsorbent for the removal of various dyes from wastewater. A quantitative estimation of major compounds in without activated (as collected), activated and various dyes treated sludge samples using synchrotron XRD technique is reported. Sewage sludge sample activated at 900 ºC for 30 min was found to have maximum adsorption efficiency (~ 95%) for the removal of different dyes (e.g. brilliant green, crystal violet and malachite green) from aqueous solution. The result shows that the adsorption using activated sewage sludge is the simplest and effective method for the removal of dyes from wastewater. As expected, the major compound in all the samples is SiO2 (~ 50 mol%). However, SiO2 was found in three different space groups. On activation at 900 ºC, a part of monoclinic SiO2 phase changes to the hexagonal phase. On the other hand, on various dyes adsorption such as brilliant green, crystal violet and malachite green, the monoclinic phase changes to the tetragonal phase.
B. Ayyanar, J. Suresh, V. Thangaraj, , , M. Kayalvizhi
Published: 25 November 2022
Asian journal of Chemistry, Volume 34, pp 3132-3144; https://doi.org/10.14233/ajchem.2022.24012

Abstract:
For conducting use, an organic molecule chalcone (1-(2,4-dichlorophenyl)-3-(4-hydroxy-phenyl)-prop- 2-en-1-one (DCHP) and metal oxide nanocomposite (MONC) doped polymer thin films were prepared. In addition, polyvinyl alcohol (PVA) and chitosan (CS) was utilized as a host polymer. The features of successfully prepared thin polymer films were characterized. The XRD analysis revealed the nano-sized (40-150 nm), crystalline phases and semi-crystalline behaviour of polymer films. The XPS and EDX confirmed the elements of PVA, CS, DCHP, MONC4 and MONC5, as well as the oxidation states of MONC4 and MONC5 sample films. The morphology of the prepared polymer film revealed an even distribution, a smooth surface and a blossoming flower-like structure from the SEM results. The TGA study revealed the multi-stage decomposition upon heating, but no complete decomposition for the produced film containing MONC4 and MONC5 thin films. The bonding between doped materials and the host polymer in the film was confirmed by FT-IR studies. The produced thin polymer composite film containing metal oxide nanocomposites and DCHP exhibited a high dielectric property and high AC conductance of 1.12 × 10-6 S cm-1 at room temperature.
Published: 25 November 2022
Asian journal of Chemistry, Volume 34, pp 3275-3278; https://doi.org/10.14233/ajchem.2022.23996

Abstract:
A series of 2,3-dihydroquinazolin-4(1H)-ones has been synthesized using a simple, effective, one-pot, three component condensation of isatoic anhydride, aromatic aldehydes and amines in refluxing ethyl alcohol. It has been found that 15 mol% succinimide-N-sulfonic acid is the optimum amount of catalyst to obtain the high yield.
M.M. Gurav, , A.W. Suryawanshi
Published: 25 November 2022
Asian journal of Chemistry, Volume 34, pp 3247-3250; https://doi.org/10.14233/ajchem.2022.24043

Abstract:
A new technique for the impregnation of magnetic based catalyst component onto the organic molecules are widely discussed. Due to its benefits of high surface area, separation simplicity, recyclability and limited leaching of catalytic active ingredients from the catalyst, in the present work, iron-doped Fe0.02Zn0.95-xCr0.05O heterogeneous catalyst was applied in the synthesis of dihydropyrimidones, thiones and their derivatives. The synthesized compounds were elucidated by their IR, 1H NMR and 13C NMR and LC-MS analysis.
, Sarymsakov Abdushkur Abdukhalilovich, Shukurov Akobirkhon Ibodullo O`g`li, Todjiyev Jamoliddin Nasiriddinovich, Atakhanov Abdumutalib Abdupatto Ugli, , Sergey O. Solomevich
Published: 25 November 2022
Asian journal of Chemistry, Volume 34, pp 3085-3092; https://doi.org/10.14233/ajchem.2022.23912

Abstract:
In present work, the formation of nanostructured antiviral biosoluble ophthalmic drug films composed of sodium carboxymethylcellulose/polyphenol-gossypol-carboxymethylcellulose copolymer is described. The biorelease time and physico-chemical parameters of the ophthalmic drug films were regulated by changes in the degree of substitution and polymerization of sodium carboxymethylcellulose and the pH value of its aqueous solutions. The morphology and size of the antiviral agent embedded in sodium carboxymethylcellulose films were determined by using atomic force microscopy and dynamic light scattering. The UV spectroscopy was used to observe drug release from the polymeric matrix and it was determined that the maximum drug release occurred after 24 h. By regulating the concentration of polyphenol-gossypol-carboxymethylcellulose copolymer antiviral substance in the polymer, the spherical nanoparticles with sizes of 5-24 nm and cubic nanoparticles with sizes of 46-95 nm were formed.
Xuan-Tien Le, Khai-Vinh Le, Tuyet-Anh Tran-Thi, Kieu-Trang Huynh
Published: 25 November 2022
Asian journal of Chemistry, Volume 34, pp 3257-3262; https://doi.org/10.14233/ajchem.2022.23998

Abstract:
Considering the emerging trends of using natural ingredients in the cosmetic industry, this study was undertaken to confirm the efficiency of some traditional skin-whitening plants in Vietnam. In this study, 11 popular Vietnamese herbal extracts were investigated in suppressing mushroom tyrosinase activity. The most potent material was then analyzed for phytochemicals profiles and the extraction process was optimized by single-factor experiments. It was found that Morus alba leaves extract using ethanol had superior mushroom tyrosinase inhibitory activity. The extract under optimal conditions (extract 2 cycles with ethanol 70%, temperature: 50 ºC, time: 40 min and solid/liquid ratio = 1:10) contained polyphenols, flavonoids, saponins and tannins and its biological properties included: antityrosinase IC50 = 99.4 μg/mL, antioxidation IC50 (DPPH assay) = 85.7 μg/mL and total phenolic content TPC (GAE) = 128.6 mg/g extract.
, , R.A. Wijaya
Published: 25 November 2022
Asian journal of Chemistry, Volume 34, pp 3361-3368; https://doi.org/10.14233/ajchem.2022.23990

Abstract:
Synthesis of ferrate (FeO4 2−) from iron plate of transformer waste electrochemically in high alkaline medium and its application for dye degradation has been carried out. The effect of parameters such as time, NaOH concentration, type of electrolyte solution and ferrate stability were studied. The ferrate solution formed is dark purple in colour with a maximum wavelength of 505 nm. The ferrate was compacted by fresh drying to produce Na2FeO4 crystals and characterized by XRF, XRD and FT-IR techniques. The ferrate was applied to degrade methylene blue, methyl orange, rhodamine and remazol black B dyes. The results showed the highest degradation of dyestuff in methylene blue by 98% and COD reduction by 73.69% at pH 8, ferrate dose of 1.1 mg and contact time of 70 min. This shows that ferrate is an environmentally friendly material which can be used to degrade toxic dyes.
Chinnaperamanoor Madhu Ganesan, Chinnasamy Chinnaraju, A.R. Lavanya, Kandasamy Prabakar
Published: 25 November 2022
Asian journal of Chemistry, Volume 34, pp 3037-3047; https://doi.org/10.14233/ajchem.2022.24024

Abstract:
The importance of a clean environment is recognized as a “pillar” of sustainable development. There is, however, a serious public health threat associated with heavy metal releases into the environment. Aquatic environments in Tamil Nadu state of India lack heavy metals monitoring data. From year 2008 to 2022, research articles were assessed that focused at heavy metal concentrations in freshwater and marine ecosystems. It has been shown that elevated levels of heavy metals in sediments of aquatic ecosystems contribute to an increase in their abundance, which may further enter the food chain through bioaccumulation. In addition, intensifying human exploitation of the South East Coastal region (SEC) in Tamil Nadu state of India through industries, tourism, aquaculture and recreation further complicates the situation by providing ever-changing sources of contamination. As a result of analyzing all heavy metals, the levels of Cd in biota collected from ocean environments were higher. Rivers and lakes have shown increased levels of heavy metals such as Zn, Cu and Pb as a result of localized anthropogenic activities. In accordance with sediment guidelines and human health risk assessments, most of the heavy metals concentrations in sediments and aquatic biota exceeded the permissible limits. It is highly recommended that more monitoring studies are conducted to monitor the levels of heavy metals in organisms and in urban rivers, lakes and marine environments in the future, with extreme importance both for environmental health and economics. By identifying the sources of pollutants and implementing strict policies to abate pollution, local governments can implement better control measures to decrease pollution levels.
Daniel Angkasali, Peter Surjo, Rafaella Shiene Wijaya, Muhammad Mikail Athif Zhafir Asyura,
Published: 25 November 2022
Asian journal of Chemistry, Volume 34, pp 3151-3156; https://doi.org/10.14233/ajchem.2022.24002

Abstract:
The COVID-19 pandemic significantly increased the amount of infectious medical wastes produced, with medical mask wastes being one of the largest contributors. Present research focuses on trying to turn medical mask waste into a functioning air filter by modifying it with CuO/TiO2 to reduce the amount of infectious medical wastes laying around. Synthesis of CuO/TiO2 was confirmed with FESEM-EDX, UV-Vis DRS and XRD techniques. The optimum amount of Cu added (1%wt of TiO2) was determined by assessing the degradation performance of the modified medical mask wastes against an organic pollutant (methylene blue) and a biological pollutant (S. aureus). The filter was then integrated into a simple air purifying unit and complemented with a UV-C germicidal lamp and a plasma ion generator. The prototype of the simple air purifying unit was able to degrade 100% tobacco smoke in less than 15 min and 30.8% CO gas in 30 min.
, Chinchumol Cyriac,
Published: 25 November 2022
Asian journal of Chemistry, Volume 34, pp 3374-3382; https://doi.org/10.14233/ajchem.2022.24028

Abstract:
A new series of 1,4-benzodiazepines were synthesized based on the results of molecular docking. The designed compounds were docked in the groove of binding sites present in human estrogen receptor 2IOK and EGFR receptor 4WKQ. The physico-chemical properties, Lipinski’s Rule of 5 and ADMET properties were calculated for the compounds by using the Qikprop application in Schrödinger software and on the basis of molecular docking fifteen compounds were designed. Because of poor yield in some cases, only ten compounds have been synthesized. All the newly synthesized compounds were established based on IR, 1H NMR and mass spectral data. The new compounds were screened for in vitro anticancer activity. Among all the compounds, compound BZ4 had the highest binding energies and showed the potential cytotoxicity when screened for anticancer activity by MTT assay.
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