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Article ; Online: Photo-Induced Preparation of Ag@MOF-801 Composite Based Heterogeneous Nanocatalyst for the Production of Biodiesel

Osamah M. Alduhaish / Mohammed Rafi Shaik / Syed Farooq Adil

Catalysts, Vol 12, Iss 533, p

2022 Volume 533

Abstract: Hybrid materials based on metal-organic frameworks (MOFs) and nanoparticles (NPs) have gained considerable popularity in a variety of applications. Particularly, these types of materials have demonstrated excellent efficiency in heterogeneous catalysis ... ...

Abstract	Hybrid materials based on metal-organic frameworks (MOFs) and nanoparticles (NPs) have gained considerable popularity in a variety of applications. Particularly, these types of materials have demonstrated excellent efficiency in heterogeneous catalysis due to the synergistic effect between the components. Herein, we report a simple, eco-friendly, photocatalytic method for the fabrication of Zr containing MOF-801 and a silver (Ag) NPs-based hybrid (Ag@MOF-801). In this method, the photocatalytic property of the central metal ion (Zr) of MOF was exploited to promote the formation and deposition of Ag NPs on the surface of the MOF-801 under the irradiation of visible light. The successful incorporation of Ag NPs was ascertained by powder X-ray diffraction (XRD) and UV-Vis analysis, while the morphology and surface area of the sample was determined by N 2 adsorption–desorption and scanning electron microscopy (SEM), respectively. The resulting Ag@MOF-801 hybrid served as a highly efficient catalyst for the transesterification of used vegetable oil (UVO) for the production of biodiesel. The Ag@MOF-801 catalyst exhibited superior catalytic activity compared to its pristine MOF-801 counterpart due to the enhanced surface area of the material.
Keywords	metal-organic framework ; Zr-fumarate-MOF ; Ag nanoparticles ; nanocatalyst ; biodiesel ; Chemical technology ; TP1-1185 ; Chemistry ; QD1-999
Subject code	620
Language	English
Publishing date	2022-05-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Bi3+/Ce3+ doped ZnO nanoparticles with enhanced photocatalytic and dielectric properties

Hafiz Adnan Akram / Muhammad Imran / Shoomaila Latif / Mohammad Rafe Hatshan / Mujeeb Khan / Abubkr Abuhagr / Khalid Mohammed Alotaibi / Syed Farooq Adil

Journal of Saudi Chemical Society, Vol 27, Iss 1, Pp 101567- (2023)

1480

Abstract: In this study, varying % Bi-doped on 1% Ce-doped ZnO (1CZ) nanoparticles (X% B-1CZ) were synthesized via a facile, simple, low-cost, sol–gel process. Various characterization techniques were employed to characterize the synthesized compound, while the ... ...

Abstract	In this study, varying % Bi-doped on 1% Ce-doped ZnO (1CZ) nanoparticles (X% B-1CZ) were synthesized via a facile, simple, low-cost, sol–gel process. Various characterization techniques were employed to characterize the synthesized compound, while the dielectric properties i.e. dielectric constant, dielectric loss and AC conductivity against frequency were studied with the help of a precision impedance analyzer. It was observed that by increasing bismuth content in the nanoparticles, the dielectric constant also increased in the range (1.47 × 106 – 4.02 × 106) at 20 Hz, and vice versa for dielectric loss decreased from 1.05 × 106 to 0.39 × 106. The role of prepared compounds as photocatalysts was also investigated against methylene blue under ultraviolet irradiation. The degradation efficiency, as well as the dielectric properties of 7% Bi-doped on 1% Ce-doped ZnO (7%B-1CZ), were found to be the best. Overall, it was found that the synthesized compounds proved promising candidates with enhanced photocatalytic & dielectric properties and hence could safely be employed for environmental remediation purposes and energy storage devices.
Keywords	Bismuth ; Zinc oxide ; Sol-gel ; XRD ; Photocatalysis ; Dielectric properties ; Chemistry ; QD1-999
Language	English
Publishing date	2023-01-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Sb-Doped Cerium Molybdate

Ayesha Javaid / Muhammad Imran / Farah Kanwal / Shoomaila Latif / Syed Farooq Adil / Mohammed Rafi Shaik / Mujeeb Khan

Molecules, Vol 28, Iss 24, p

An Emerging Material as Dielectric and Photocatalyst for the Removal of Diclofenac Potassium from Aqueous Media

2023 Volume 7979

Abstract: This work reports the influence of antimony substitution in a cerium molybdate lattice for improved dielectric and photocatalytic properties. For this purpose, a series of Ce 2−x Sb x (MoO 4 ) 3 (x = 0.00, 0.01, 0.03, 0.05, 0.07, and 0.09) were ... ...

Abstract	This work reports the influence of antimony substitution in a cerium molybdate lattice for improved dielectric and photocatalytic properties. For this purpose, a series of Ce 2−x Sb x (MoO 4 ) 3 (x = 0.00, 0.01, 0.03, 0.05, 0.07, and 0.09) were synthesized through a co-precipitation route. The as-synthesized materials were characterized for their optical properties, functional groups, chemical oxidation states, structural phases, surface properties, and dielectric characteristics using UV–Vis spectroscopy (UV–Vis), Fourier transform infrared (FTIR) and Raman spectroscopies, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis, and impedance spectroscopy, respectively. UV–Vis study showed a prominent red shift of absorption maxima and a continuous decrease in band gap (3.35 eV to 2.79 eV) by increasing the dopant concentration. The presence of Ce–O and Mo–O–Mo bonds, detected via FTIR and Raman spectroscopies, are confirmed, indicating the successful synthesis of the desired material. The monoclinic phase was dominant in all materials, and the crystallite size was decreased from 40.29 nm to 29.09 nm by increasing the Sb content. A significant increase in the dielectric constant (ε′ = 2.856 <semantics> × </semantics> 10 8 , 20 Hz) and a decrease in the loss tan (tan δ = 1.647, 20 Hz) were exhibited as functions of the increasing Sb concentration. Furthermore, the photocatalytic efficiency of pristine cerium molybdate was also increased by 1.24 times against diclofenac potassium by incorporating Sb (x = 0.09) in the cerium molybdate. The photocatalytic efficiency of 85.8% was achieved within 180 min of UV light exposure at optimized conditions. The photocatalytic reaction followed pseudo-first-order kinetics with an apparent rate constant of 0.0105 min −1 , and the photocatalyst was recyclable with good photocatalytic activity even after five successive runs. Overall, the as-synthesized Sb-doped cerium molybdate material has proven to be a promising ...
Keywords	cerium molybdate ; doping ; antimony ; dielectric ; AC conductivity ; photocatalysis ; Organic chemistry ; QD241-441
Subject code	540
Language	English
Publishing date	2023-12-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Green, Solvent-Free Mechanochemical Synthesis of Nano Ag2O/MnO2/N-Doped Graphene Nanocomposites

Mohammad Rafe Hatshan / Mujeeb Khan / Mohamed E. Assal / Mohammed Rafi Shaik / Mufsir Kuniyil / Abdulrahman Al-warthan / Mohammed Rafiq H. Siddiqui / Syed Farooq Adil

ACS Omega, Vol 9, Iss 2, Pp 2770-

An Efficient Catalyst for Additive-Base-Free Aerial Oxidation of Various Kinds of Alcohols

2024 Volume 2782

Keywords	Chemistry ; QD1-999
Language	English
Publishing date	2024-01-01T00:00:00Z
Publisher	American Chemical Society
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Ascorbic acid-mediated Fe/Cu nanoparticles and their application for removal of COD and phenols from industrial wastewater

Amna Chaudhry / Farzana Bashir / Syed Farooq Adil / Sadia Saif / Mohammed Rafi Shaik / Mohammad Rafe Hatshan / Baji Shaik

Journal of King Saud University: Science, Vol 34, Iss 4, Pp 101927- (2022)

2022

Abstract: Industrial activities release a large number of pollutants in the environment, which deteriorate environmental quality, and human health. Organic and inorganic pollutants increase the chemical oxygen demand (COD) of the receiving water bodies, one such ... ...

Abstract	Industrial activities release a large number of pollutants in the environment, which deteriorate environmental quality, and human health. Organic and inorganic pollutants increase the chemical oxygen demand (COD) of the receiving water bodies, one such pollutant is phenol, which is an organic compound that is toxic even at low concentrations. The high COD leads to a lower amount of dissolved oxygen (DO) which is important factor for aquatic life. These pollutants are a serious threat to human health and the environment. In this study, economic and environmentally friendly synthesis of iron copper (Fe/Cu) nanoparticles are reported, which were characterized using UV visible spectroscopy, FT-IR, XRD, TGA, and SEM. The developed particles were then employed to treat industrial wastewaters containing phenol and for reduction of chemical oxygen demand (COD). The average size reported by SEM analysis was between 140 nm and 160 nm. Batch experiments showed that a 83.33% mg/L reduction in COD and 76.91% of phenol removal was attained at pH 4, adsorbent dose of 0.5 g/100 mL, and contact time of 60 min, respectively. It was observed that the efficiency of phenol removal increased with an increase in the initial concentration of both, COD and phenols. The results demonstrated that the Fe/Cu nanoparticles are effective adsorbent material to remove phenols from industrial wastewaters as well as for the reduction of COD.
Keywords	Ascorbic acid ; Nanoparticles ; Fe/Cu ; COD ; Phenols ; Wastewater ; Science (General) ; Q1-390
Language	English
Publishing date	2022-06-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Facile green synthesis of semiconductive ZnO nanoparticles for photocatalytic degradation of dyes from the textile industry

Jayachamarajapura Pranesh Shubha / Kiran Kavalli / Syed Farooq Adil / Mohamed E. Assal / Mohammad Rafe Hatshan / Narsimhaswamy Dubasi

Journal of King Saud University: Science, Vol 34, Iss 5, Pp 102047- (2022)

A kinetic approach

2022

Abstract: One-pot, facile and green synthesis of zinc oxide nanoparticles are synthesized using cow dung as fuel by combustion procedure. The synthesized material is characterized by using various techniques such as XRD, FTIR, UV, FESEM, and EDX. To assess the ... ...

Abstract	One-pot, facile and green synthesis of zinc oxide nanoparticles are synthesized using cow dung as fuel by combustion procedure. The synthesized material is characterized by using various techniques such as XRD, FTIR, UV, FESEM, and EDX. To assess the photocatalytic efficacy of the as-synthesized material, harmful cationic and anionic dyes such as methylene blue (MB) and alizarin red S (AZ) dyes, respectively, are selected as benchmark dyes. The influence of light source, dye concentration, photocatalyst dosage, and pH value on the efficiency of photocatalyst and kinetics of photodegradation are systematically studied. The photodegradation results revealed that the synthesized ZnO NPs exhibited removal efficiency of MB and AZ dyes upon irradiation with UV light. Concisely, the removal efficacy of the ZnO NPs under UV light irradiation exhibited an MB and AZ degradation of 99.9% and 96.8%, respectively. A reasonable photo-catalytic mechanism for the high photodegradation efficacy of MB and AZ dyes by the prepared photocatalyst is also proposed. The green fabricated photocatalyst is promising material and could be applied for waste-water remediation and other ecological applications.
Keywords	ZnO ; Methylene blue ; Alizarin red S ; Degradation ; Photocatalysis ; Science (General) ; Q1-390
Subject code	540
Language	English
Publishing date	2022-07-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Chemical deposition and exfoliation from liquid crystal template

Etab M. Almutairi / Mohamed A. Ghanem / Abdulrahman Al-Warthan / Mohammed Rafi Shaik / Syed Farooq Adil / Adibah M. Almutairi

Arabian Journal of Chemistry, Vol 15, Iss 1, Pp 103467- (2022)

Nickel/nickel (II) hydroxide nanoflakes electrocatalyst for a non-enzymatic glucose oxidation reaction

1479

Abstract: This work reports the synthesis of nickel/nickel hydroxides nanoflakes (Ni/Ni(OH)2-NFs) at room temperature via a novel chemical deposition and exfoliation from a liquid crystal template mixture. The nickel ions dissolved in the interstitial aqueous ... ...

Abstract	This work reports the synthesis of nickel/nickel hydroxides nanoflakes (Ni/Ni(OH)2-NFs) at room temperature via a novel chemical deposition and exfoliation from a liquid crystal template mixture. The nickel ions dissolved in the interstitial aqueous domain of the Brij®78 hexagonal liquid crystal template were deposited by a reducing agent of sodium borohydride that concurrently reduces the nickel ions and generates extreme hydrogen gas bubbles, that exfoliated the nickel/nickel hydroxide layers. The Ni/Ni(OH)2-NFs crystal structure, morphology, and surface area characterizations revealed the formation of semi-crystalline α-Ni(OH)2 nanoflakes with a thickness of approximately 10 nm and a specific surface area of about 135 m2/g. The electrochemical measurements of cyclic voltammetry, chronoamperometry, and impedance analysis showed that the Ni/Ni(OH)2-NFs exhibited significant performance for the glucose non-enzymatic oxidation in an alkaline solution in comparison to the bare-nickel hydroxide (bare-Ni(OH)2) deposited without surfactant. The Ni/Ni(OH)2-NFs electrode showed superior glucose oxidation activity over the bare-Ni(OH)2 catalyst with a sensitivity of 1.078 mA mM−1 cm−2 with a linear concentration dependency range from 0.2 to 60 mM and a detection limit of 0.2 mM (S/N = 3). The enhanced electrochemical active surface area and mesoporosity of the 2D nanoflakes make the Ni/Ni(OH)2-NFs a promising catalyst in the application of glucose non-enzymatic sensing.
Keywords	Nickel hydroxide ; Nanoflakes ; Liquid crystal template ; Glucose oxidation ; Chemistry ; QD1-999
Language	English
Publishing date	2022-01-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Surface-coated magnetic nanostructured materials for robust bio-catalysis and biomedical applications-A review

Muhammad Bilal / Hafiz M.N. Iqbal / Syed Farooq Adil / Mohammed Rafi Shaik / Abdelatty Abdelgawad / Mohammad Rafe Hatshan / Mujeeb Khan

Journal of Advanced Research, Vol 38, Iss , Pp 157-

2022 Volume 177

Abstract: Background: Enzymes based bio-catalysis has wide range of applications in various chemical and biological processes. Thus, the process of enzymes immobilization on suitable support to obtain highly active and stable bio-catalysts has great potential in ... ...

Abstract	Background: Enzymes based bio-catalysis has wide range of applications in various chemical and biological processes. Thus, the process of enzymes immobilization on suitable support to obtain highly active and stable bio-catalysts has great potential in industrial applications. Particularly, surface-modified magnetic nanomaterials have garnered a special interest as versatile platforms for biomolecules/enzyme immobilization. Aim of review: This review spotlights recent progress in the immobilization of various enzymes onto surface-coated multifunctional magnetic nanostructured materials and their derived nano-constructs for multiple applications. Conclusive remarks, technical challenges, and insightful opinions on this field of research which are helpful to expand the application prospects of these materials are also given with suitable examples. Key scientific concepts of review: Nanostructured materials, including surface-coated magnetic nanoparticles have recently gained immense significance as suitable support materials for enzyme immobilization, due to their large surface area, unique functionalities, and high chemical and mechanical stability. Besides, magnetic nanoparticles are less expensive and offers great potential in industrial applications due to their easy recovery and separation form their enzyme conjugates with an external magnetic field. Magnetic nanoparticles based biocatalytic systems offer a wide-working temperature, pH range, increased storage and thermal stabilities. So far, several studies have documented the application of a variety of surface modification and functionalization techniques to circumvent the aggregation and oxidation of magnetic nanoparticles. Surface engineering of magnetic nanoparticles (MNPs) helps to improve the dispersion stability, enhance mechanical and physicochemical properties, upgrade the surface activity and also increases enzyme immobilization capabilities and biocompatibility of the materials. However, several challenges still need to be addressed, such as ...
Keywords	Nanomaterials ; Engineered nano-matrices ; Enzyme immobilization ; Bio-catalysis ; Surface functionalization ; Medicine (General) ; R5-920 ; Science (General) ; Q1-390
Subject code	620
Language	English
Publishing date	2022-05-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Facile synthesis of ZnO/CuO/Eu heterostructure photocatalyst for the degradation of industrial effluent

J.P. Shubha / B. Roopashree / R.C. Patil / Mujeeb Khan / Mohammed Rafi Shaik / Marwa Alaqarbeh / Abdulrahman Alwarthan / Abdulnasser Mahmoud Karami / Syed Farooq Adil

Arabian Journal of Chemistry, Vol 16, Iss 3, Pp 104547- (2023)

2023

Abstract: Zinc oxide-based ternary heterostructure ZnO/CuO/Eu(1%, 3%, and 5% of Eu) nanoparticles were effectively produced by employing Vigna unguiculata (cowpea)waste skin extract as fuel in a simple one-pot combustion process. The as-synthesized heterostructure ...

Abstract	Zinc oxide-based ternary heterostructure ZnO/CuO/Eu(1%, 3%, and 5% of Eu) nanoparticles were effectively produced by employing Vigna unguiculata (cowpea)waste skin extract as fuel in a simple one-pot combustion process. The as-synthesized heterostructure was analyzed by X-ray diffraction studies, ultraviolet-visible spectroscopy, Fourier Transform Infrared Spectroscopy, Field Emission Scanning Electron Microscopy, and High-Resolution Transmission Electron Microscopy techniques. Besides, the photocatalytic degradation efficiency of the as-obtained ternary nanocomposite was evaluated under UV light for the degradation of model organic pollutants including methylene blue (MB), Rhodamine-B (RB), and an effluent sample collected from the textile industrial waste. During this study, the effect of a variety of parameters on the photodegradation activity of the photocatalysts has been thoroughly evaluated, such as light source, catalyst dose, irradiation period, dye concentration, solution pH, etc. Under UV irradiation(100 mins), the ternary ZnO/CuO/Eu photocatalyst demonstrated excellent degradation activity of ∼99 and ∼93% for MB and RB, respectively, while for the industrial effluent, a decent degradation activity of 42% has been recorded. Further experiments have revealed a pH and concentration-dependent photocatalytic behavior of the heterostructure photocatalyst. Therefore, the results suggest that the heterostructure photocatalyst can be potentially applied for wastewater treatment and other environmental applications.
Keywords	Ternary heterostructure ; ZnO/CuO/Eu ; Photocatalyst ; Methylene blue ; Rhodamine-B ; UV irradiation ; dye degradation ; Chemistry ; QD1-999
Subject code	540
Language	English
Publishing date	2023-03-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Spectroscopic, anti-bacterial, anti-cancer and molecular docking of Pd(II) and Pt(II) complexes with (E)-4-((dimethylamino)methyl)-2-((4,5-dimethylthiazol-2-yl)diazenyl)phenol ligand

Ahmed S.M. Al-Janabi / Khulood H. Oudah / Samar A. Aldossari / Mohamed A. Khalaf / Abdulrahman M. Saleh / Mohammad R. Hatshan / Nourah B. Altheeb / Syed Farooq Adil

Journal of Saudi Chemical Society, Vol 27, Iss 3, Pp 101619- (2023)

2023

Abstract: New ligand (E)-4-((dimethylamino)methyl)-2-((4,5-dimethylthiazol-2-yl)diazenyl)phenol (HDmazo) was prepared by the coupling reaction between 4,5-dimethylthiazol-2-amine and 4-((dimethylamino)methyl)phenol. Moreover, the [MCl2(HDmazo)] and [M(HDmazo)2] [ ... ...

Abstract	New ligand (E)-4-((dimethylamino)methyl)-2-((4,5-dimethylthiazol-2-yl)diazenyl)phenol (HDmazo) was prepared by the coupling reaction between 4,5-dimethylthiazol-2-amine and 4-((dimethylamino)methyl)phenol. Moreover, the [MCl2(HDmazo)] and [M(HDmazo)2] [MII = Pd and Pt] were prepared using the direct reaction of equivalent molar of HDmazo and Na2PdCl4 or K2PtCl4. The HDmazo and its complexes were investigated by different spectroscopic techniques. In complexes (1–2) HDmazo ligand behaves as bidentate style through the nitrogen of azo group and nitrogen of thiazole ring towards Pd(II) and Pt(II). Or in a bidentate fashion via the oxygen atom of the hydroxylate group and nitrogen atom of azo group as mono-anion in complexes (3–4). Further, the study of biological activity against four pathogenic bacteria showed that compound (3) exhibited good activity compared to other compounds. Additional the anti-tumor action against A2870 cell lines was screened, and the complexes (1) and (2) displayed good activity with 7.45 ± 0.98 µM and 13.23 ± 1.43 µM, respectively. The binding mechanism of the prepared compounds with EGFR tyrosine kinase, was investigated using molecular docking experiments.
Keywords	Azo dye ; Thiazole ; Biological activity ; Molecular docking ; Palladium ; Platinum ; Chemistry ; QD1-999
Subject code	540
Language	English
Publishing date	2023-05-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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