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The selective adsorption and capture of CO2 from post-combustion gases carries huge significance for the reduction of greenhouse effect. In this research, the computations of density functional are performed to investigate the CO2 selective adsorption of S-doped graphene in thrall to applied electric field (E-F). Introducing the applied E-F, the adsorption between S-doped graphene and CO2 is strong chemisorption, and CO2 can be effectively captured. Removing the applied E-F, the adsorption restores to physisorption and CO2 is easily desorbed. Therefore, the CO2 seize and clearing can be realiz..read more
Jingyi Shan, Xiangling Wang, Junkai Wang, Shixuan Zhang, Qianku Hu and Aiguo Zhou
- 02 Dec 2021
- Volume Detail: VOLUME 43, NO6, DEC-2021
- Pages: 623
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Cellulose in the fibrous structure, which is the main structural component in the cell wall of plants, was formed by the combination of three thousand or more glucose molecules and was a natural polymer synthesized by many living microorganisms. In this study, it was aimed to observe the performance of carrot pulp physically added to water-based coating to increase the viscosity of the coatings. In addition, volcanic lava stone (red pumice stone) and perlite stone were added to the coating to improve its properties that heat transfer, adhesion, hydrophobicity, corrosion resistance. The effect ..read more
Bilge Çelik and Nil Acaralı
- 02 Dec 2021
- Volume Detail: VOLUME 43, NO6, DEC-2021
- Pages: 635
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Recently, polyurethane materials are widely used for many application areas such as drug delivery systems, biomaterial production, etc. In this study, polyurethane structures containing different amounts of gelatin (5%, 10%) were prepared. A release system was designed with ciprofloxacin adsorption to the prepared polyurethane structures. The structural characterization, thermal properties, surface morphologies of the designed system were determined using appropriate techniques. Monitoring of ciprofloxacin release was carried out by UV-spectrophotometer. It was determined that polyurethane str..read more
İdil Karaca Açarı
- 02 Dec 2021
- Volume Detail: VOLUME 43, NO6, DEC-2021
- Pages: 645
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The chitosan was cross linked with ethylene diamine and trepthaldehyde (CM-Chitosan) through Schiff base reaction. The chitosan was successfully cross linked as confirmed by FT-IR spectrometer. The morphological analysis illustrated that CM-Chitosan surface is porous/rough than neat chitosan. The CM-Chitosan and Chitosan were employed as an adsorbent for the elimination of Cu+2 and Pb+2 ions from aqueous solution. The CM-chitosan adsorbed 8.96 and 2.09 mmol/g while neat chitosan removed 6.71 and 1.58 mmol/g of Cu+2 and Pb+2 ions, respectively. The adsorption data was also best fitted to Freund..read more
Samina Begum, Syed Nusrat Shah, Falak Naz, Khalid Saeed
- 02 Dec 2021
- Volume Detail: VOLUME 43, NO6, DEC-2021
- Pages: 656
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This study is aimed to investigate the electro-catalytic activity of Au supported on both CeO2 and activated carbon (AC) to convert CO2 to mixture of C1-C4 hydrocarbons in the presence of ionic liquid (IL) 1-butyl-3-methylimidazolium methylsulfonate. The studied catalyst samples were prepared by using simultaneous wet impregnation method. The sample containing 0.6 % Au showed higher electro-catalytic activity than the sample contained 0.3 % Au. Both, the average Au particles size and the transformation of layered non-uniformed semi-oval structure to flaked tiny circular like-structure were mai..read more
Arshid M. Ali, Aqeel Taimoor, Ayyaz Muhammad, Muhammad A. Daous and Usman Saeed
- 02 Dec 2021
- Volume Detail: VOLUME 43, NO6, DEC-2021
- Pages: 665
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Finding a renewable, cleaner and inexpensive source of energy has been a momentous challenge to the researchers. Among others, one intriguing solution is molecular H2 which is considered as an ideal energy source for the future needs. Obtaining H2 is extremely appealing but difficult to achieve. One of the most viable solutions is the electrocatalytic hydrogen evolution reaction (HER). In this paper, we presented electrocatalytic HER performances of pyridoxal-semi carbazone (PLSC) and pyridoxal S-methyl-iso-thiosemicarbazone (PLITSC) stabilized Co(II) and Co(III) complexes, i.e. ([Co(PLSC)(SO4..read more
Violeta Jevtovic, Khalaf M. Alenezi, Hani El Moll, Ashanul Haque, Salma A. Al-Zahrani
Jamal Humaidi and Dragoslav Vidovic
- 02 Dec 2021
- Volume Detail: VOLUME 43, NO6, DEC-2021
- Pages: 673
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The novel semi-natural Schiff bases were synthesized with the reaction of the natural compounds usnic acid and naringenin extracted and purified in natural sources and chemically modified silica gel. Cu(II), Ni(II), Co(II) and Mn(II) complexes of the ligands were synthesized and the silica-supported ligands and their metal complexes were characterized by FT-IR, TG/DTA, SEM, EDX, ICP-OES and elemental analyses techniques. The solid-phase extraction behaviours of the novel silica-supported ligands were examined. It was found that the hybrid materials showed the very efficient adsorption properti..read more
Serhan URUŞ, Ahmet ÇAKIR, İbrahim Ethem ULUÇAY and Ali ASLAN
- 02 Dec 2021
- Volume Detail: VOLUME 43, NO6, DEC-2021
- Pages: 682
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Our efforts lay emphasis on synthesis of S-aralkylated 5-(4-OMeC6H5)-4-phenyl-4H-1,2,4-triazol-3-thiols like pharmacologically active candidates to counter neurodegenerative disorder; Alzheimer's disease. A synthetic strategy was instigated by esterifying 4-methoxybenzoic acid through Fisher esterification's methodology. Hydrazinolysis of corresponding ester was performed under reflux with methanolic hydrated hydrazine to afford 4-methoxybenzohydrazide (I) which refluxing with phenyl isothiocyanate (II) in MeOH to yield a reactive intermediate (III). The later underwent base-catalyzed intermol..read more
Muhammad Arfan, Sabahat Zahra Siddiqui, Muhammad Athar Abbasi, Aziz-ur-Rehman,
Syed Adnan Ali Shah, Muhammad Ashraf, Khalid Mohammed Khan, Rahman Shah Zaib Saleem and Amna Shah Zaib
- 02 Dec 2021
- Volume Detail: VOLUME 43, NO6, DEC-2021
- Pages: 694
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Cobalt coordination polymer i.e. [Co(1-VI)6]·NO3 was successfully synthesized with cobalt metal and (VI = vinylimidazole) and characterized by elemental analysis, FTIR, UV/Vis spectroscopy and X-ray crystallography. The structure of the compound was determined by single X-ray crystallography at temperature 296 K with a Bruker APEX II CCD diffractometer using Mo-Kα radiations (λ = 0.71073 Å), R = 0.0642 and 0.0989. Orthorhombic unit cell parameters are a = 16.1341 (6) Å, b = 16.5179(16) Å, c = 18.2664(16) Å, V= 4868.0 (8) Å, Dx = 4, Mr = 937.91. The X-ray crystallography studies showed that the..read more
Fouzia Chang, Najma Memon, Shahabuddin Memon, Ayaz Ali Memon, Saddam Hussain Bughio, Muhammad Nawaz Tahir and Abdul Sattar Chang
- 02 Dec 2021
- Volume Detail: VOLUME 43, NO6, DEC-2021
- Pages: 706
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In this study new chalcone derivative (2E)-3-(1-benzothiophen-2-yl)-1-(4-hydroxyphenyl)prop-2-en-1-one (I), which has important pharmacological applications, was designed and synthesized. IR, NMR and LC-MS/MS empirical methods were used in order to confirm the molecular structure of the synthesized compound I. Both two tautomeric forms of the molecule were optimized by using density functional theory (DFT) method. The structural parameters formed after optimization and structural parameters obtained from similar compounds by X-ray diffraction show a good correlation. The theoretical and exper..read more
Nevin Süleymanoğlu, Reşat Ustabaş, Fatih Eyduran, Şahin Direkel, Yasemin Ünver, Nuran Kahriman
- 02 Dec 2021
- Volume Detail: VOLUME 43, NO6, DEC-2021
- Pages: 712
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