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The sensing behaviors of monolayer antimonide phosphorus (SbP) for hydrogen sulfide (H2S) are investigated by means of the density functional theory. In this paper, we calculated the best adsorption configuration, charge transfer, adsorption distance, band gap, electronic structure and recovery time of H2S on the SbP monolayer and mental-doped SbP (X-SbP). The calculated results indicate that Al atom replaces Sb atom of SbP (Al-Sb-SbP), adsorption capacity was greatly increased, but the covalent bond formed between the gas molecules and the substrate was not suitable for sensing materials. And..read more
Dong Li, Xiaolei Li, Tengfei Wang, Lu Li and Junkai Wang
- 30 May 2023
- Volume Detail: VOLUME 45, NO3, JUNE-2023
- Pages: 173
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Density functional theory (DFT) is employed to research three carbon tubes (CNTs), SWCNT, N-NiCNT, and N-CoCNT. The first two structures synthesized by other groups and N-NiCNT has better sodium storage properties as sodium-ion battery (SIB) anode than SWCNT, the last one is a designed structure. Here, the intrinsic cause why N-NiCNT has better performance than SWCNT has been located at molecular and atomic levels, meanwhile the potential of N-CoCNT as anode candidate is predicted. The researched properties that determine the electrochemical performances involve in structure stability, frontie..read more
Tingting Xu, Xiaohua Xie, Huisheng Huang and Xinwei Zhao
- 30 May 2023
- Volume Detail: VOLUME 45, NO3, JUNE-2023
- Pages: 181
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In this study, a two-dimensional transition metal carbon/nitride (MXenes) method was used to enhance the electrocatalytic oxidation behavior of PbO2 electrode. A novel composite electrode was prepared by doping the modified MXenes into PbO2 material. The electrochemical performance was tested by electrochemical workstation. The typical cationic red X-GRL was treated by electrochemical oxidation, and the electrochemical oxidation performance of the material electrode was investigated. The results demostrated that the dyes were removed by the oxygen evolution reaction at the electrodes doped wit..read more
Xinyu Zhang, Jiajun Li, Ming Guo, Kaijie Ni, Ronghui Wu and Zhiyan Hu
- 31 May 2023
- Volume Detail: VOLUME 45, NO3, JUNE-2023
- Pages: 189
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Selection of good filler-polymer pair results in improved gas separation performances. Present study deals with fabrication of Matrimid based hybrid or mixed matrix membranes (MMMs) by using three weight loadings (10, 20 and 30 wt. %) of 1D rod shaped nanoporous [Pr(BTC)(H2O)6] metal organic framework (MOF). The fourier transform infrared (FTIR) spectrophotometric analysis indicated the bonding of lanthanide metal ion with the linker and thus formation of the MOF, and further revealed that the structure of MOF remained intact after incorporation into the polymer matrix. Powder X-ray (PXRD) ana..read more
Asma R. Tariq, Misbah Sultan, Tariq Mahmud, Ghayoor Abbas Chotana, Muhammad Rizwan Dilshad, Asim Laeeq Khan, Muhammad Imran, Saadia Rashid Tariq and Prof. Dr. Klaus Müller-Buschbaum
- 31 May 2023
- Volume Detail: VOLUME 45, NO3, JUNE-2023
- Pages: 203
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Disperse dyes are essentially non – ionic, exhibit poor solubility in water, and they can be used in the form of water dispersion. Polyester fibres are resistant to dilute aqueous acids and alkaline solutions and pH value does not provide a crucial impact on the dyeing mechanism; however, many disperse dyes undergo degradation if the pH is uncontrolled during aqueous dyeing. In order to minimize the possibility of dye hydrolysis, the dyeing is carried out in a slightly acidic medium, and pH is usually adjusted with acetic acid. In this work, the quantity of disperse dyes (Sinten Gelb P-5GL an..read more
Milena Miljković, Sandra S. Konstantinović, Vojkan M. Miljković, Milena Nikodijević and Dušan Trajković
- 31 May 2023
- Volume Detail: VOLUME 45, NO3, JUNE-2023
- Pages: 218
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A novel superabsorbent composite (SAC) based on bentonite, acrylamide and acrylic acid was synthesized. The effects of bentonite quantity, initiator content on the grafting degree and on the water absorbency for the samples were studied. Synthesis mechanism, morphology and thermal properties of the SAC were characterized. FTIR results confirmed the presence of acrylamide/ acrylic acid onto bentonite backbone while TGA showed that introduction of 70 % bentonite to polymer increases thermal stability. The SAC was also tested in the removal of heavy metal in aqueous solution where kinetics analys..read more
Shaheen Wali, Manzoor Iqbal Khattak, Mahmood Iqbal Khattak and Ashif Sjjad
- 31 May 2023
- Volume Detail: VOLUME 45, NO3, JUNE-2023
- Pages: 226
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Diclofenac sodium is a nonsteroidal anti-inflammatory drug which cures by reducing substances in the body that cause pain and inflammation. There is always a risk of heart attack and stroke in case of taking excess of the drug. In present study a simple, fast and cost-effective method is devised for the assay of diclofenac sodium in locally available pharmaceutical preparations. The method is based on the reaction of the drug with 2, 4-DNPH (2, 4-Dinitro phenyl hydrazine). Micro-quantities of the drug gave green coloured spots when mixed with 2,4-DNPH on a pre-coated TLC plate, in the presence..read more
Waheed-uz-Zuman, Rida Ayub, Amara Dar and Jamil Anwar
- 31 May 2023
- Volume Detail: VOLUME 45, NO3, JUNE-2023
- Pages: 237
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A series of organic-exchanged silicotungstic acid catalysts were synthesized by changing the variety and amount of organic compounds. The structure, thermal stability and acidic properties of the catalysts were characterized by FT-IR, XRD, TGA and 31P-MAS NMR. The catalytic performances of the catalysts were investigated on the selective esterification of lauric acid with glycerol to glycerol monolaurate. Among the various catalysts, [QuH]1H3SiW12O40 with molar ratio of quinoline to silicotungstic acid of 1:1 showed excellent activity and reusability due to strong Brønsted acidity and “pseudo-..read more
Li Ran, Deng Yunli, Wu Siliang, Liao Jiayi, Tang Xiujuan, Han Xiaoxiang
- 31 May 2023
- Volume Detail: VOLUME 45, NO3, JUNE-2023
- Pages: 243
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The reaction of β-dicarbonyl compounds as ethyl acetoacetate with hydrazines is a well-established route for the creation of pyrazole derivatives. In this research, 4-hydrazinoquinazoline (4) reacted with ethyl acetoacetate in boiling ethanol it gives ethyl 3-oxobutanoate quinazolin-4-yl-hydrazone (5). Cyclization of the compound (5) in the presence of glacial acetic acid is passed to form 4-(5-hydroxy-3-methyl-1H-pyrazol-1-yl)quinazoline(6). Furthermore, the reaction of phenylisothiocyanate compounds with hydrazines is a well-established way for the synthesis of tetrazinoquinazoline (8). The ..read more
Fatma A. M. Mohamed, Bi Bi Zainab Mazhari, Mona F. Warrad, Hesham A. M. Gomaa, Asmaa T. Ali, Shaimaa Salah Eldeen Hussein and Hendawy Om
- 31 May 2023
- Volume Detail: VOLUME 45, NO3, JUNE-2023
- Pages: 256
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The petroleum ether soluble and insoluble fractions of the methanol extract of air dried stem extract of Daphne mucronata and a pure compound daphnin obtained from the more active petroleum ether insoluble fraction were evaluated for the pro-neurogenic activity on cortical and hippocampal primary cell cultures prepared from the neonatal mice brain. It showed significant proliferation of the cells as assessed by MTT assay..read more
Perveen Bano, Kanwal Iftikhar, Kinza Rafi, Bina Shaheen Siddiqui, Shabana Usman Simjee, Sabira Begum
- 31 May 2023
- Volume Detail: VOLUME 45, NO3, JUNE-2023
- Pages: 263
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