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The behaviour of liquid mixture of 2-Bromoanisole, 1-Butanol and n-Hexane as a function of temperature and composition has been investigated by measuring ultrasonic velocity in conjunction with density and viscosity at 303K, 308K and 318K for frequency 2 MHz using ultrasonic interferometer. With the help of the measured values ultrasonic velocity (u), viscosity (η) and density (ρ), the acoustical parameters like acoustic impedance, adiabatic compressibility, free length, free volume and internal pressure have been calculated. In order to know the molecular interaction between the components i..read more
J. Edward Jeyakumar, S.Chidambara Vinayagam, J. Senthil Murugan and P.S.Syed Ibrahim
- 03 Nov 2020
- Volume Detail: VOLUME 42, NO6, DEC-2020
- Pages: 798
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Monolayer HNb3O8 nanosheets, as a platform, were prepared for investigating the mechanism of photosensitized degradation of RhB. We found that RhB molecules were capable to absorb on HNb3O8 nanosheets via a strong interaction between the –N(Et)2 group in RhB molecules and surface Lewis acid sites on HNb3O8 nanosheets, contribution to an easier oxidation of RhB molecules. Thanks to the suitable conduction band of HNb3O8 nanosheets, electrons transferred from excited RhB to HNb3O8 nanosheets effectively and reduced the dissolved O2 in the reaction solution into O2-• immediately, resulting in th..read more
Jinhua Xiong, Jiahang Chen, Xueqing Shao, Xiuzhen Liu, Lingyan Fu
- 03 Nov 2020
- Volume Detail: VOLUME 42, NO6, DEC-2020
- Pages: 807
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Understanding and controlling the processes occurring at electrode/electrolyte interface are very important in optimizing energy conversion devices. Cyclic voltammetry is a very sophisticated and accurate electroanalytical method enables us to explore the mechanism of such electrode reactions. In this work, electrochemical experiments using cyclic voltammetry were performed in aqueous KCl solution containing potassium ferricyanide, K3[Fe(CN)6] at a glassy carbon disc working electrode and the mechanism of the reactions is highlighted. The CV measurements shows that the ferricyanide [Fe(CN)6]3−..read more
Sayyar Muhammad, Ummul Banin Zahra, Aneela Ahmad, Luqman Ali Shah and Akhtar Muhammad
- 03 Nov 2020
- Volume Detail: VOLUME 42, NO6, DEC-2020
- Pages: 813
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The 2- (naphthalen-1-yl (piperidin-1-yl) methyl) phenol compound is an alkylaminophenol compound and has been experimentally synthesized by the Petasis reaction. In this study Structural analysis was carried out by FT-IR, NMR, UV-Vis spectroscopy. The high antioxidant value of the compound showed that it could be a potential biologically active drug. Theoretical data support all experimental analysis of the new compound. Comparisons were made by double method. For this purpose, DFT (B3LYP) and HF methods have been used with 6-311G ++ (d, p) set. Also, the compound's electronic and structural p..read more
Yeliz Ulaş
- 03 Nov 2020
- Volume Detail: VOLUME 42, NO6, DEC-2020
- Pages: 818
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Visible-light-driven WO3·0.33H2O/Ag2MoO4 composites have been prepared by using an in-situ growth of Ag2MoO4 nanoparticles on the surfaces of WO3·0.33H2O. The photocatalytic activities of the samples were studied by degradation of rhodamine B and levofloxacin dilute solution. The synergistic photocatalytic mechanism was also analyzed. Experimental results reveal that the as-developed hybrids have higher photocatalytic activity than pure samples. When the theoretical molar ratio of WO3·0.33H2O to Na2MoO4·2H2O is 1:0.15, the as-developed hybrids have the highest photocatalytic degradation effici..read more
Yun-Xuan Fu, Yan Li, Tian-Long Chang, Xu-Tao Liu, Xiang-Feng Wu, Jia-Rui Zhang Hui Wang and Xiao-Ye Ma
- 03 Nov 2020
- Volume Detail: VOLUME 42, NO6, DEC-2020
- Pages: 827
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Sonochemistry meaning ultrasound-assisted chemistry plays an important role in the synthesis of inorganic compounds. Among these inorganic compounds, zinc borates are used for the flame-retarding agent. In this study using zinc chloride (ZnCl2), boric acid (H3BO3), Na2B4O7·10H2O, Na2B4O7·5H2O and NaOH as raw materials, a zinc borate compound in the formulae of Zn3B6O12·3.5H2O was obtained using an ultrasonic probe. Crystal structures of samples were identified using X-ray diffraction (XRD). The symmetric and asymmetric stretching between boron and oxygen atoms were searched by Fourier-transfor..read more
Fatma Tugce Senberber Dumanli, Azmi Seyhun Kipcak, Duygu Sena Vardar and Nurcan Tugrul
- 03 Nov 2020
- Volume Detail: VOLUME 42, NO6, DEC-2020
- Pages: 839
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The catalytic performances of activated alumina and its supported alkali metal carbonate catalysts for the reaction of thiophenol with dimethyl carbonate to prepare thioanisole (PhSMe) were investigated on a fixed bed reactor under the condition of atmospheric pressure. The properties of activated alumina and its loading alkali metal carbonate catalysts were characterized via IR, BET and XRD. The effect of loading amount of alkali metal carbonate, calcination temperature, reaction temperature and liquid volume hourly space velocity (LVHSV) of reactants on the catalytic performances of the cata..read more
YUCHEN WU, FENGHUA ZHANG, FEI LI, HENG JIANG, RUI WANG, HONG GONG
- 03 Nov 2020
- Volume Detail: VOLUME 42, NO6, DEC-2020
- Pages: 846
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Among all psychotropic alkaloids, nicotine is more addictive, carcinogenic and capable of causing many health problems. This work is based on the development of highly robust, cheap, reliable, selective and sensitive nicotine imprinted graphene oxide nanocomposite (ImpGO nanocomposite) based optical sensor for determination of nicotine in human plasma. The ImpGO nanocomposite has been thoroughly characterized using different techniques i.e. FT-IR, SEM, TEM, Raman, etc. These characterizations revealed that ImpGO nanocomposite is comprised of single layer of graphene oxide successfully modified..read more
Sehrish Qazi, Huma Shaikh, Ayaz Ali Memon, and Shahabuddin Memon
- 03 Nov 2020
- Volume Detail: VOLUME 42, NO6, DEC-2020
- Pages: 856
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The present work describes a reversed phase high-performance liquid chromatography (RP-HPLC) assay with diode array detection (DAD) for the determination of rhein, an active metabolite of diacerein, in spiked rabbit plasma. The plasma samples were subjected to one-step liquid-liquid extraction using a protein precipitating agent. The separation of rhein was achieved on an RP C18 hypersil-ODS column (250×4.6mm, 5μm). The mobile phase consisted of a binary mixture of methanol and water (15: 85 v/v, pH 4.7) run under the isocratic system at a flow rate of 1 ml.min-1, the wavelength of DAD was set..read more
Asadullah Madni, Muhammad Imran Khan, Mubashar Rehman, Nayab Tahir, Nadia Rai, Farzana Parveen, Muhammad Danish Saeed, Muhammad Abdur Rahim, Hassan Shah
- 03 Nov 2020
- Volume Detail: VOLUME 42, NO6, DEC-2020
- Pages: 866
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Rauwolfia Serpentina is a medicinal herb used for hypertension and psychotic disorders. In this study neuroprotective effects of Rauwolfia serpentina plant extract following the exposure to acute immobilization (2h) stress in rats were investigated. The extract of the plant administered orally at non-sedative dose 30mg/kg before immobilization (2h) to observe stress induced behavioral deficits. Neuroprotective efficacy of extract was assessed in terms of alteration in activities of antioxidant enzymes like superoxide dismutase (SOD) and catalase (CAT). We also monitored leptin, corticosterone ..read more
Erum Shireen, Wafa Binte Ali, Maria Masroor, Shamim A. Qureshi, Sehrish Kiran, Nida Memon, Nashran Junaid, Muhammad Mansoor Hai and Darakhshan J. Haleem
- 03 Nov 2020
- Volume Detail: VOLUME 42, NO6, DEC-2020
- Pages: 875
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