Article
Environmental Sciences
Meroua Safa Mechouche, Fateh Merouane, Chemes El Houda Messaad, Nasrin Golzadeh, Yasser Vasseghian, Mohammed Berkani
Summary: Silver nanoparticles synthesized by actinomycetal strains showed effective antibacterial activity against drug-resistant pathogens. Additionally, these nanoparticles demonstrated promising photocatalytic degradation potential for methylene blue dye under sunlight irradiation.
ENVIRONMENTAL RESEARCH
(2022)
Review
Chemistry, Multidisciplinary
Gattu Sampath, Yih-Yuan Chen, Neelamegam Rameshkumar, Muthukalingan Krishnan, Kayalvizhi Nagarajan, Douglas J. H. Shyu
Summary: Nanotechnology is a rapidly developing field in material science, and silver nanoparticles (AgNPs) are of great interest due to their small size, large surface area, and multiple applications. The use of plant sources as reducing agents for synthesizing AgNPs is attractive because it is cheaper and less time-consuming. AgNPs have received significant attention in scientific fields for their antibacterial, anticancer, and anti-inflammatory activities, as well as their potential for clean environment applications.
Review
Pharmacology & Pharmacy
Mehran Alavi, Ali Nokhodchi
Summary: This review discusses recent progress and challenges in the use of novel approaches for the biosynthesis of Ag and ZnO nanoparticles that have antibacterial activities. The uniformity of shape, size, and size distribution of nanoparticles are crucial to producing significant antibacterial results, particularly in physiological conditions such as infected wounds or septicemia.
DRUG DISCOVERY TODAY
(2021)
Article
Chemistry, Multidisciplinary
Clarissa Marcelle Naidoo, Yougasphree Naidoo, Yaser Hassan Dewir, Moganavelli Singh, Aliscia Nicole Daniels, Johnson Lin, Ali Alsughayyir
Summary: This study successfully synthesized silver nanoparticles using latex extracts and evaluated their biological activities. The silver nanoparticles showed strong antibacterial and cytotoxic activities. Latex extracts can be used as effective capping agents for nanoparticles.
APPLIED SCIENCES-BASEL
(2023)
Article
Polymer Science
Xiaoqing Wang, Sun-Young Lee, Shahina Akter, Md. Amdadul Huq
Summary: This study proposes a simple and environmentally friendly method to synthesize silver nanoparticles (AgNPs) using Bacillus sonorensis MAHUQ-74 strain isolated from kimchi. The biosynthesized AgNPs show strong antibacterial activity against antibiotic-resistant pathogenic strains of Escherichia coli O157:H7 and can destroy the membrane integrity of the bacteria.
Article
Chemistry, Multidisciplinary
Palaniselvam Kuppusamy, Sujung Kim, Sung -Jo Kim, Ki-Duk Song
Summary: In this study, gold and silver nanoparticles were synthesized using a green method and plant extract. The synthesized nanoparticles showed good antibacterial activity against livestock pathogens and cytotoxicity against certain cell lines. Additionally, the nanoparticles exhibited antioxidant activity. Therefore, the biosynthesized nanoparticles hold potential for the development of antimicrobial agents in the livestock industry.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Muhammad Farooq, Shaukat Shujah, Kamran Tahir, Sadia Nazir, Afaq Ullah Khan, Zainab M. Almarhoon, Violeta Jevtovic, Hamza S. Al-Shehri, Syed Tasleem Hussain, Arif Ullah
Summary: In this study, silver-doped zinc oxide nanomaterials were synthesized using Capparis decidua plant extract as a natural reducing agent. The structural morphologies and applications of the nanomaterials were investigated using various analytical techniques. The results showed that Ag doping enhanced the photocatalytic potential of ZnO by limiting the drop back probability of electrons. Optimal experimental conditions, such as pH, catalyst dose, and contact time, were determined to maximize the catalytic activity. The synthesis of Ag/ZnO nanocomposite was found to be a cost-effective and environmentally friendly approach.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Chunyan Hu, Benxian Yu, Zhijia Zhu, Jian Zheng, Wei Wang, Baojiang Liu
Summary: The LaFeO3/g-C3N4 composite system was designed and prepared to treat refractory organics and toxic heavy ions in water through the combination of oxidation of LaFeO3 and reduction of g-C3N4. The photocatalytic performance was significantly enhanced due to sufficient active sites and extended lifespan of charge carriers. The three-dimensional structure and redox advantages of the bicomponents improved the separation and transfer of electron-hole pairs.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Environmental Sciences
Wilaiwan Chaisorn, Piyawan Nuengmatcha, Amnuay Noypha, Rungnapa Pimsen, Paweena Porrawatkul, Arnannit Kuyyogsuy, Yanisa Thepchuay, Phitchan Sricharoen, Nunticha Limchoowong, Saksit Chanthai, Prawit Nuengmatcha
Summary: We synthesized a ?-irradiated chitosan-ZnO-AgNPs (ICZA) composite using hydrogels method and evaluated its adsorption, photocatalytic degradation, and antibacterial abilities. The obtained samples were characterized using XRD, SEM, TEM, EDS, and FTIR techniques. The ICZA showed high adsorption capacity and photocatalytic activity, with a maximum adsorption capacity of 92.59 mg/g and an apparent rate constant of 3.08 x 10(-2) under UV light. It also exhibited good antibacterial activity against Staphylococcus aureus, with a MIC and MBC of 12.5 g/mL and 50 g/mL, respectively. The hypothesized mechanism of its adsorption and photocatalytic activity, as well as antibacterial activity, was discussed.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Chemistry, Inorganic & Nuclear
Maria Malik, Muhammad Aamir Iqbal, Yasir Iqbal, Mariam Malik, Sunila Bakhsh, Shaheen Irfan, Raice Ahmad, Phuong V. Pham
Summary: Biosynthesis is a simple, cost-effective, efficient, and environmentally sustainable process for synthesizing nanomaterials. Silver nanoparticles (AgNPs) have diverse applications in commercial, pharmacological, and therapeutic fields due to their chemical stability and high biocompatibility. Utilizing microorganisms and plants, the biosynthesis method is proven to be sustainable, environmentally safe, and has a wide range of non-toxic applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Amit Kumar, Moolchand Sharma, Rahul Vaish, Samia ben Ahmed
Summary: Polarized and unpoled BaTiO3 nanoparticles were coated onto cotton fabric through screen printing. The piezocatalytic antibacterial and dye degradation activities of the coated samples were evaluated using ultrasound method. After 2 hours, the polarized BT embedded fabric reduced E. coli and S. aureus by 99.8% and 97.7%, respectively, while unpoled BT-NPs loaded cotton reduced these bacteria by 96.5% and 95.2%. In contrast, the unpoled BT-NPs coated fabric and pristine cotton achieved 60% and 29% degradation of Methylene Blue dye in 75 minutes, respectively, while the polarized BT-NPs coated fabric degraded MB dye by 82%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Applied
Ali A. El-Samak, Deepalekshmi Ponnamma, Mohammad K. Hassan, Mariam Al Ali Al-Maadeed
Summary: Porous nanocomposite of polystyrene (PS) with the addition of ZnO nanomaterials improves the porosity of the fiber. The composite shows high degradation efficiency and excellent antibacterial activity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Environmental Sciences
Lianxin Yuan, Weixuan Liu, Wanting Zhang
Summary: Element doping is an effective method for enhancing the photocatalytic performance of photocatalysts. This study utilized potassium sorbate as a new precursor to dope potassium ions into g-C3N4 during the calcination process, resulting in the formation of potassium-doped g-C3N4 (KCN). Through various characterization techniques and electrochemical measurements, it was found that potassium doping efficiently modified the band structure of g-C3N4, enhancing light absorption and conductivity, which accelerated charge transfer and photogenerated carrier separation. These findings demonstrate the potential of potassium incorporation in g-C3N4 for fabricating high-performance photocatalysts for organic pollutant removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Niloufar Alikhani, Malak Hekmati, Bikash Karmakar, Hojat Veisi
Summary: This study investigates the biogenic synthesis of Au nanoparticles using Rosa canina fruit extract as a template, and demonstrates its efficient catalytic activity in the reductive degradation of organic dyes. The synthesized nanomaterial shows good stability and recyclability.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Environmental Sciences
Karuppusamy Indira, Sabarathinam Shanmugam, Anjana Hari, Seerangaraj Vasantharaj, Selvam Sathiyavimal, Kathirvel Brindhadev, Ahmad El Askary, Ashraf i Elfasakhany, Arivalagan Pugazhendhi
Summary: Nickel-titanium dioxide (Ni-TiO2) nanoflakes were synthesized using Mukia maderaspatana leafs in this study, showing potential as efficient photocatalysts for degrading dyes in wastewater under UV illumination.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Physical
Shahid Ahmad, Sher Bahadar Khan, Abdullah M. Asiri
Summary: In this study, hydrogel beads were fabricated using a viscous solution of sodium alginate polymer containing dispersed silica. The hydrogel beads were then modified with five different types of metal to create metal coated catalysts. These catalysts were further converted into zero-valent metal nanoparticles using NaBH4. The Cu0/Si@AlgBDs catalyst showed the highest efficiency in the reduction of 4-NP to 4-AP and was chosen for further study. It also demonstrated excellent catalytic activity in the decolorization of various compounds and in the generation of H2 gas.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Noureen Khan, Bibi Shahida, Shahid Ali Khan, Zubair Ahmad, Saeeduddin, Ziviqar Sheikh, Esraa M. Bakhsh, Haneen M. Alraddadi, Taghreed M. Fagieh, Sher Bahadar Khan
Summary: In this study, a composite film (CMC-PSIS) was prepared by dispersing carboxymethyl cellulose (CMC) in a polystyrene block polyisoprene block polystyrene polymer (PSIS) using a simple casting technique. Cu and Ni ions were adsorbed onto CMC-PSIS and then converted into Cu-0 and Ni-0 nanoparticles (NPs) in the presence of NaBH4. The prepared catalysts were characterized and used for the reduction/degradation of four model pollutants. The results showed that CMC-PSIS/Cu exhibited the highest rate constant for the degradation of methyl orange, while Cu NPs showed the shortest reaction time. CMC-PSIS/Ni achieved the highest degradation extent for rhodamine B among all the dyes.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Chemistry, Inorganic & Nuclear
Zia Ur Rahman, Usman Shah, Amir Alam, Zarbad Shah, Kausar Shaheen, Sher Bahadar Khan, Shahid Ali Khan
Summary: Due to excessive usage and continuous release into the aquatic environment, organic pollutants have become a threat to the environment. Advanced oxidation processes (AOPs), including photocatalysis, have gained attention for the removal of active pharmaceutical ingredients (APIs) and other organic pollutants in water. A CuO-NiO nano-composite photocatalyst with a p-p isotype heterojunction was prepared using a low-cost and facile co-precipitation method. The nanocomposite photocatalyst showed effective catalytic activity in the degradation of cefixime, with a degradation rate of 90% and a rate constant (k) of 7.4 x 10-3 min-1. Radical trapping study confirmed the involvement of hydroxyl and superoxide radicals in the degradation reactions.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Saima Sohni, Tajamul Hassan, Sher Bahadar Khan, Kalsoom Akhtar, Esraa M. Bakhsh, Rokiah Hashim, Hafiz Nidaullah, Momin Khan, Shahid Ali Khan
Summary: This study presents a facile fabrication strategy for a three-dimensional reduced graphene oxide hydrogel embedded with lignin nanoparticles (LNP), which exhibits promising potential for environmental applications. The LNP were synthesized from walnut shell waste via a direct chemical method and were integrated into the continuous porous network of rGO to create the rGO@LNP hydrogel. Various analytical techniques were employed to characterize the structure and properties of the hydrogel. The efficiency of the hydrogel as an adsorptive platform was evaluated using methylene blue and Pb2+ as model pollutants, and its antibacterial activities were also tested. The results demonstrated that the inclusion of LNP significantly enhanced the pollutant's uptake ability of the hydrogel and exhibited improved bactericidal effect compared to bare LNP and rGO. This innovative approach utilizing the synergy of functional properties of LNP and rGO has great potential for water filtration and remediation.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Rajesh Rajendiran, Ravi Balaga, Putrakumar Balla, Prem Kumar Seelam, Prathap Challa, Alagusundari Karuppiah, Vijayanand Perupogu, Venkatesan Rengarajan, Ulla Lassi, Esraa M. Bakhsh, Sher Bahadar Khan
Summary: Versatile heterogeneous nanocatalysts based on PdNPs decorated on metal oxides supports were designed and characterized. The catalysts showed high yields in the conversion of GVL to PA and the reduction of 4-NP to 4-AP. The relationship between the active sites and the catalytic performance was evaluated through various techniques. The thermodynamic parameters of the activation energy for the reduction reaction were calculated for different catalysts.
CATALYSIS COMMUNICATIONS
(2023)
Article
Environmental Sciences
Kalsoom Akhtar, Mohammad Sherjeel Javed Khan, Esraa M. Bakhsh, Tahseen Kamal, Abdullah M. Asiri, Sher Bahadar Khan
Summary: Metal nanoparticles were synthesized on a composite of Zn-phthalocyanine and chitosan hydrogel, acting as a catalyst support, to enhance the recovery and re-use of the catalyst. Various metal nanoparticles were deposited on the surface and inside the hydrogel. Co-0@ZnPc-CH and ZnPc-CH showed effective catalytic reduction and hydrogen generation.
ENVIRONMENTAL POLLUTION
(2023)
Article
Crystallography
Haji Rahman, Abdur Rauf, Shahid Ali Khan, Zubair Ahmad, Abdulrahman Alshammari, Metab Alharbi, Amir Alam, Hafiz Ansar Rasul Suleria
Summary: The present study synthesized silver nanoparticles (Ag NPs) using a methanolic and aqueous extract of R. stricta. The Ag NPs were characterized using UV-visible spectroscopy, EDX, FESEM, and FTIR techniques. The Ag NPs exhibited SPR at 490-560 nm in the UV-visible spectra, and FTIR spectrum indicated the presence of various functional groups capping the nanoparticles. The Ag NPs had an average size of 20-35 nm and a spherical shape as confirmed by FESEM. The Ag NPs showed superior antioxidant, antibacterial, and antifungal activities compared to the plant extract.
Article
Chemistry, Multidisciplinary
Farhana Anjum, Mohamed Shaban, Muhammad Ismail, Saima Gul, Esraa M. Bakhsh, Murad Ali Khan, Uzma Sharafat, Sher Bahadar Khan, M. I. Khan
Summary: In this study, CuO, GO, and CuO/GO nanocomposites were synthesized successfully, with CuO:GO(5:1) achieving the highest photocatalytic degradation efficiency of MR dye. The thermodynamic parameters indicated that CuO/GO(5:1) nanocomposites can efficiently degrade organic pollutants at room temperature.
Article
Multidisciplinary Sciences
Abdullah M. Asiri, Muhammad Khuram Shahzad, Shoukat Hussain, Kai Zhu, Sher Bahadar Khan, Khalid Ahmad Alamry, Soliman Y. Alfifi, Hadi M. Marwani
Summary: Energy conversion is essential for meeting energy production and consumption needs in the modern era. XGaO3 (X = Ba and Cs) compounds, with their electrical, optical, mechanical, and structural properties, were studied using density functional theory. The compounds showed a cubic pm3m structure with an associated space group. CsGaO3 and BaGaO3 exhibited both direct and indirect band gaps, and the localization of electrons in various bands was analyzed. The optical properties were explored through theoretical dielectric function scales, indicating the potential application of these compounds in light consumption and water splitting.
Article
Agricultural Engineering
Shahid Ali Khan, Saima Sohni, Kalsoom Akhtar, Esraa M. Bakhsh, Taufiq Nawaz, Sher Bahadar Khan
Summary: Pollutant removal based on natural materials is widely used for degrading toxic organic pollutants in water due to their high efficiency. In this study, a redox dip-nanocatalyst based on cobalt nanoparticles anchored on lignocellulose biomatrix was used for the degradation of model pollutants. The catalytic properties of the catalyst were examined and found to have good activity for the degradation of nitrophenols and dyes. These results demonstrate the potential application of the catalyst for pollutant remediation.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Inorganic & Nuclear
Karuppiah Nagaraj, Subramaniam Kamalesu, Anjalikumari H. Kosamiya, Raja Kaliyaperumal, Chandrabose Uthra, Esraa M. Bakhsh, Sher Bahadar Khan, Suriyan Radha, Ammasai Karthikeyan, Chelladurai Karuppiah
Summary: In this study, the binding of DNA with double alkyl chain metallosurfactants in ionic liquid media was investigated using various spectral techniques. The size and shape of the ligand, as well as the hydrophobicity of the complexes, were found to significantly affect the binding affinity of the complexes to DNA. The presence of an ionic liquid additive enhanced the binding strength of the surfactant-cobalt(III) complex to DNA, with the double alkyl chain complex exhibiting stronger binding due to its increased hydrophobicity. The long aliphatic chain amine ligand in the metallosurfactant-oxime complex played a definite role in the binding through its hydrophobicity. The results also showed that the extent of DNA binding was greater for the double alkyl chain complex.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Haneen M. Alraddadi, Taghreed M. Fagieh, Esraa M. Bakhsh, Kalsoom Akhtar, Sher Bahadar Khan, Shahid Ali Khan, Effat A. Bahaidarah, Tahani A. Homdi
Summary: A composite hydrogel based on sodium alginate/coffee waste (Alg/coffee) was designed as an adsorbent for the removal of organic and inorganic pollutants from water. The hydrogel showed high adsorption efficiency for Pb(II) and acridine orange dye (AO). The adsorption of Pb(II) and AO followed the Langmuir isotherm and pseudo-second-order kinetic models. Real sample analysis demonstrated the effectiveness of Alg/coffee hydrogel beads in removing Pb(II) pollutants.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Electrical & Electronic
Waseeq Ur Rehman, Muhammad Tayyab Noor Khattak, Abdu Saeed, Kausar Shaheen, Zarbad Shah, Shah Hussain, Esraa M. Bakhsh, Haneen M. Alraddadi, Taghreed M. Fagieh, Kalsoom Akhtar, Sher Bahadar Khan, Shahid Ali Khan
Summary: In this study, a Co3O4/NiO nanocomposite was successfully synthesized as a catalyst for thermal degradation and photodegradation of malachite green dye. The nanocomposite showed small spherical particles with an average size of 52.82 +/- 17.73 nm. XRD pattern and XPS analysis confirmed the formation of the Co3O4/NiO nanocomposite, with Co3O4 and NiO crystal contents of 67.7 +/- 17% and 32.3 +/- 16%, respectively. TGA results demonstrated the thermal stability of the Co3O4/NiO nanocomposite up to 1000 degrees C. It exhibited a optical energy band gap of 4.27 eV and a surface area of 27.4933 m(2)/g. Furthermore, its photocatalytic activity was compared with photolysis and thermocatalytic activity, with photocatalysis showing a significantly higher velocity constant (kapp) value than photolysis.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Biochemistry & Molecular Biology
Girgis Obaid, Menitte Eroy, Jie Zhao, Shazia Bano, Mari Mino-Kenudson, Tayyaba Hasan
Summary: The presence of desmoplasia in pancreatic ductal adenocarcinoma (PDAC) is associated with poor treatment outcomes and reduced drug delivery. By analyzing collagen subtypes in PDAC tumors following different treatment regimens, immunofluorescence profiling can predict long-term survival and tumor growth inhibition. This information can aid in personalized treatment and improve patient survival.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2024)
Article
Biochemistry & Molecular Biology
Fatemeh Malekpour, Rashin Bahrami, Mahshid Hodjat, Neda Hakimiha, Behnam Bolhari, Aidin Sooratgar, Soheil Niavarzi
Summary: This study investigated the effect of photobiomodulation (PBM) therapy using an 808 nm diode laser on cellular modulation mechanisms in regenerative endodontic procedures (REPs). The results showed that PBM treatment significantly increased cell viability and migration, and enhanced the release of TGF-131 from dentin.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2024)
Article
Biochemistry & Molecular Biology
Pranathi Tata, Ramakrishnan Ganesan, Jayati Ray Dutta
Summary: Thin film coatings with potent antibacterial properties are widely used in medical devices, frequently touched surfaces, and food packaging. However, achieving antibacterial performance under both light and dark conditions remains a challenge. In this study, we successfully prepared AgBr-coated ZnO nanorod thin film architecture using a unique surfactant-mediated solution-phase spin-coating approach. The resulting structures showed dual functionality as antimicrobial agents and photosensitizers, effectively enhancing the visible-light photodisinfection efficacy of ZnO nanorods. The concentration of the surfactant-based precursor solution could be modulated to control the AgBr content. Additionally, components like urea and lactic acid were found to enhance the photocatalytic efficiency of the structures.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2024)
