Article
Chemistry, Physical
Sahin Demirci, S. Duygu Sutekin, Olgun Guven, Nurettin Sahiner
Summary: Poly(2-aminoethyl methacrylate) (p(AEM)) microgels were synthesized and used for metal nanoparticle preparation. These microgels were then incorporated into p(AEM) based poly ionic liquid (PIL) microgels, which served as catalysts for hydrogen production from sodium borohydride (NaBH4) reactions. The catalytic activity and regeneration ability of the microgels were analyzed, showing promising results.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Chenchen Wang, Lei Cheng, Si Ye, Puxuan Yan, Lixian Sun
Summary: A novel composite aerogel-type catalyst consisting of Ru-CoP anchored on graphene oxide (GO) was successfully fabricated using a facile freeze-drying method. The catalyst exhibited high catalytic performance and structural stability, making it suitable for hydrogen production by NaBH4 hydrolysis. The loss rate of the catalyst after five cycles of testing was only 23%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Alhulw H. H. Alshammari, Khulaif Alshammari, Turki Alotaibi, Majed Alshammari, Sultan Alhassan, Taha Abdel Mohaymen Taha
Summary: The nanocomposites of S@g-C3N4 and NiS-g-C3N4 with different NiS concentrations were synthesized and characterized. The NiS-g-C3N4 nanocomposites showed increased porosity and improved photocatalytic performance. The highest hydrogen production rate was achieved with the sample containing 1.5 wt.% NiS nanosheet.
Article
Chemistry, Physical
Medhen W. Abebe, Anteneh F. Baye, Hern Kim
Summary: In this study, an interpenetrating polymer network (IPN) strategy was utilized to prepare a recyclable polymeric catalyst for catalytic methanolysis of NaBH4 to produce hydrogen gas. The catalyst exhibited excellent cyclic performance and prolonged catalyst life.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Yuqian Yu, Li Kang, Lixian Sun, Fen Xu, Hongge Pan, Zhen Sang, Chenchen Zhang, Xinlei Jia, Qingli Sui, Yiting Bu, Dan Cai, Yongpeng Xia, Kexiang Zhang, Bin Li
Summary: In this study, a porous titanium oxide cage (PTOC) catalyst was successfully synthesized, and its synergistic effect with PtNi alloy particles resulted in a high hydrogen generation rate and low activation energy. The robust porous structure of PTOC effectively prevented agglomeration issues and ensured the long-term stability of the catalyst.
Article
Chemistry, Physical
A. Kytsya, V Berezovets, Yu Verbovytskyy, L. Bazylyak, V Kordan, I Zavaliy, V. A. Yartys
Summary: In this study, Ni-Co bimetallic nanoparticles were successfully synthesized, and the effects of different Ni contents on particle size and polydispersity were observed. Ni50Co50 showed the highest catalytic activity for the hydrolysis of alkaline NaBH4 solutions. The kinetic studies revealed that the hydrolysis rate increased with higher NaBH4 concentration and decreased with higher pH value of the solution. The activation energy of the reaction decreased with decreasing NaBH4 and catalyst contents.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Duygu Elma Karakas
Summary: In this study, orange peel was used as a metal-free catalyst for hydrogen production from sodium boron hydride. The catalyst was prepared by treating the orange peel with phosphoric acid and burning it at a specific temperature and time. The catalytic activity of the catalyst was characterized and the hydrogen generation rates and activation energy were determined.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Applied
Yuuki Hata, Sumiyo Hiruma, Yuta Sakurai, Kai Sugiura, Hiromi Miyazaki, Takeshi Serizawa, Shingo Nakamura
Summary: We report a method for bottom-up nanostructuring of conventional microfibrous cellulose materials using a molecular self-assembly strategy. By swelling the cellulose material with aqueous phosphoric acid, it undergoes partial dissolution and hydrolysis while maintaining its microfibrous structure. Upon the addition of water as a coagulant, dissolved cello-oligosaccharides start to self-assemble and form nanospike-like structures on the microfiber surfaces. The resulting nanospiked papers can serve as precursors for synthesizing silver nanoparticle-cellulose composites with bactericidal activities. This study promotes the development of cellulose-based functional materials with nanostructures designed via molecular self-assembly.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Physical
Valentina G. Minkina, Stanislav I. Shabunya, Vladimir I. Kalinin, Vladimir V. Martynenko
Summary: This study investigated the catalytic hydrolysis of aqueous NaBH4 solutions and found that the catalyst used showed stable catalytic activity. It was also observed that conducting the hydrolysis under near adiabatic conditions significantly reduced the hydrolysis time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Paper & Wood
Somia Haouache, Clara Jimenez-Saelices, Fabrice Cousin, Xavier Falourd, Bruno Pontoire, Karine Cahier, Francois Jerome, Isabelle Capron
Summary: This study provides a detailed characterization of two types of cellulose nanofibers, focusing on their morphology, surface chemistry, crystallinity, and molecular weight. The results show a reduction in crystal size after mercerization treatment, while the surface charge density remains the same.
Article
Chemistry, Physical
O. V. Netskina, E. S. Tayban, V. A. Rogov, A. M. Ozerova, S. A. Mukha, V. I. Simagina, O. V. Komova
Summary: In the study, it was found that cobalt catalysts are more active than nickel catalysts in the hydrolysis of sodium borohydride. One reason for the lower activity of nickel catalysts is the presence of hydrogen on its surface, which interferes with reactant adsorption. The addition of cobalt to nickel catalysts can enhance hydrogen generation rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Acoustics
Narsimha Pandi, Shirish H. Sonawane, K. Anand Kishore
Summary: This study successfully synthesized Cellulose nanocrystals (CNCs) from cotton using ultrasound-assisted acid hydrolysis, and comprehensively characterized the CNCs using FTIR, XRD, DTA, and TGA. The results showed that the synthesized CNCs exhibited good crystallinity and thermal properties.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Analytical
Lu Shi, Qiaorong Tang, Bing Yang, Baoxin Li, Chaoyong Yang, Yan Jin
Summary: Gas pressure biosensing is a promising portable analysis method. Acid-accelerated hydrolysis of sodium borohydride (NaBH4) was explored for diverse gas pressure biosensing, providing a new way for cheap, universal, and portable biosensing.
Article
Chemistry, Multidisciplinary
Duygu Elma Karakas, Mustafa Kaya, Sabit Horoz
Summary: This study aims to utilize waste banana peels as biomass and examine its contribution to hydrogen generation rate. The researchers used acid catalyst to functionalize the banana peels and found that it increased the hydrogen generation rate significantly and reduced the activation energy.
Article
Materials Science, Paper & Wood
Mingzhu Zhang, Meng Li, Ningya Yu, Shengpei Su, Xiaomin Zhang
Summary: A series of tannic acid-modified cellulose hydrogels embedded with size-controlled AgCl nanoparticles were successfully fabricated, showing excellent catalytic activity in the reduction of 4-nitrophenol. The size of AgCl nanoparticles could be adjusted by varying the tannic acid content, with the smallest nanoparticles exhibiting the highest catalytic activity. The strategy of catalysis along with reduction provided a novel path for catalytic systems involving noble metal catalysts.
Article
Agriculture, Dairy & Animal Science
Atta Muhammad Memon, Fangzhou Chen, Sher Bahadar Khan, Xiaozhen Guo, Rajwali Khan, Farhan Anwar Khan, Yinxing Zhu, Qigai He
Summary: In this study, a simple, swift, cost-effective, highly specific, and sensitive antigen-capture enzyme-linked immunosorbent assay (AC-ELISA) was developed for detection of porcine rotavirus-A (PoRVA). The AC-ELISA efficiently detected PoRVA from clinical samples and showed no cross-reactivity with other porcine viruses. This technique can be used for large-scale surveillance and timely detection of rotavirus infection in the porcine farms.
ANIMAL BIOTECHNOLOGY
(2023)
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
Polymer Science
Mohammad Asad, Muhammad Nadeem Arshad, Abdullah M. Asiri, Mohammed M. Rahman, Snigdha Kumaran, Mohammed Musthafa Thorakkattil Neerankuzhiyil
Summary: Chitosan-bounded copper (chitosan-Cu) was utilized for the green synthesis of novel ferrocenated spiropyrrolidine hybrids. A one-pot three-component 1,3-dipolar cycloaddition reaction using tyrosine, glycine, and isatin derivatives was employed to form spiropyrrolidines from 1-(4-bromophenyl)-ferrocene-prop-2-en-1-one and azomethine ylides. The synthesized spiropyrrolidines showed good antibacterial activity against Gram-positive and Gram-negative bacterial strains.
Review
Polymer Science
Guravtar Singh Mann, Naved Azum, Anish Khan, Malik Abdul Rub, Md Imtaiyaz Hassan, Kisa Fatima, Abdullah M. Asiri
Summary: Global climate change has already caused various environmental effects and led to a shift in focus towards sustainable materials. Green composites, which combine renewable fibers with polymers, offer a wide range of applications and superior features compared to conventional materials.
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
Polymer Science
Esraa M. Bakhsh, Sher Bahadar Khan, Nujud Maslamani, Ekram Y. Danish, Kalsoom Akhtar, Abdullah M. Asiri
Summary: In this study, CMC/CuO-TiO2 beads were developed as a catalyst for the reduction of organic and inorganic contaminants. These beads demonstrated excellent catalytic activity and stability.
Article
Chemistry, Physical
Tahir Ali Sheikh, Abdullah M. Asiri, Amna Siddique, Hadi M. Marwani, Md. Rezaur Rahman, Muhammad Nadeem Akhtar, Mohammed M. Rahman
Summary: A novel electrochemical current-potential (I-V) approach was developed using a highly calcined binary metal oxide (Er2O3@NiO) semiconductor nanocomposite to detect and degrade toxic chemicals in aqueous medium. The modified glassy carbon electrode based on this semiconductor nanocomposite showed selectivity towards m-tolyl hydrazine (m-Tolyl HDZN) and good affinity towards other interfering toxic chemicals. Analytical parameters were optimized and the limit of detection (LOD) for m-Tolyl HDZN was calculated.
Article
Materials Science, Multidisciplinary
H. Mohit, Sanjay Mavinkere Rangappa, Krittirash Yorseng, Suchart Siengchin, Hadi M. Marwani, Anish Khan, Abdullah M. Asiri
Summary: The effect of chemically treated and untreated water hyacinth/pineapple leaf, titanium carbide nanoparticles, Innegra, and carbon fabric reinforcement on the characteristics of polyester hybrid composites was studied. The chemically treated fibers showed excellent bonding with the fillers and textiles, as observed from various analysis techniques. The use of artificial neural network (ANN) for modeling the material characteristics was also investigated in this study.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
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
Chemistry, Physical
Kalsoom Akhtar, Asma A. Alhaj, Esraa M. Bakhsh, Sher Bahadar Khan, Taghreed M. Fagieh
Summary: In this study, silver oxide-doped tin oxide nanoparticles were synthesized and used as catalysts. The nanoparticles were coated on adhesive tape to enable recyclability. The catalyst showed effective reduction of methyl orange under optimized conditions, suggesting its potential for large-scale industrial applications.
Article
Physics, Applied
Aftab Aslam Parwaz Khan, Z. Fadil, Pankaj Raizada, Pardeep Singh, Maha Alotaibi, Mohammad Omaish Ansari, Anish Khan, Abdullah M. Asiri, Chaitany Jayprakash Raorane
Summary: A monolayer anthracene-like nanostructure was studied through Monte Carlo simulations to determine its compensation temperature and magnetic hysteresis cycle. The effects of exchange coupling on compensation and transition temperatures were discussed. The study also investigated the magnetic hysteresis cycles and surface of multi-loop hysteresis with respect to strong exchange coupling and temperature parameters. This research has significant implications for multi-state memories and nanotechnology.
Review
Chemistry, Multidisciplinary
Umer Shahzad, Hadi M. Marwani, Mohsin Saeed, Abdullah M. Asiri, Mohammed M. Rahman
Summary: Due to their unique two-dimensional layered microstructure, MXenes are considered promising candidates for addressing energy and environmental issues, thanks to their numerous functionalities on the surface and excellent electrical, thermal, and optical features. Altering the dimensions, structure, surface chemistry, and chemical composition of MXenes can enhance their energy conversion and storage capabilities. Therefore, it is crucial to understand the relationship between structure and property from an applied perspective. This study reviews the synthesis, properties, and potential applications of MXenes and discusses their structural, chemical, optical, mechanical, and thermal properties, as well as their applications in photocatalysis, gas sensing, supercapacitors, electrocatalysis, and environmental remediation. It also highlights the progress and future prospects of MXene-based composites, providing valuable insights for scientists in academia and material sciences.
Article
Agricultural Engineering
Saima Sohni, Kashif Gul, Junaid Ali Shah, Arshad Iqbal, Murtaza Sayed, Sher Bahadar Khan
Summary: In this study, a binary composite based on peanut shell biochar and graphene oxide was designed for dye adsorption in wastewater treatment. The composite showed high adsorption capacity for Crystal Violet and Bromophenol Blue, along with good long-term stability and recovery rate.
INDUSTRIAL CROPS AND PRODUCTS
(2023)