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
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
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
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
Materials Science, Paper & Wood
Yan Song, Wei Jiang, Haoxi Ben, Yuanming Zhang, Guangting Han, Arthur J. Ragauskas
Summary: Preparation of deuterium incorporated cellulose is important for investigating cellulose internal structure and expanding its application fields. The study successfully prepared cellulosic cotton fibers with anti-rehydration deuterium incorporation and characterized the process using nuclear magnetic resonance and spectroscopy. The results showed that the hydrogen-deuterium exchange occurred preferentially in the amorphous cellulose component and increased treatment time led to higher deuterium incorporation. Additionally, the isotope effect did not affect the cellulose microstructure, crystalline index, or degree of polymerization properties significantly.
Article
Polymer Science
Gamal Zain, Maria Buckova, Katarina Mosnackova, Jana Dohanosova, Alena Opalkova Siskova, Matej Micusik, Angela Kleinova, Peter Matus, Jaroslav Mosnacek
Summary: This study reports a modification of cotton fabric surface using surface-initiated oxygen-tolerant photochemically induced atom transfer radical polymerization to impart antibacterial properties. By optimizing the reaction conditions, cotton-grafted-QPDMAEMA with high antibacterial efficiency and good laundry resistance was successfully produced. The modified fabric showed no significant deterioration in mechanical properties while maintaining high antibacterial performance.
Article
Chemistry, Physical
Wenjie Zhang, Bohan Li, Ruitao Lv, Huaming Li, Yuqing Weng, Wanci Shen, Feiyu Kang, Zheng-Hong Huang
Summary: Transforming cotton into functional flexible transparent film through deconstruction and reconstruction enables high-resolution printing of text and QR codes as well as direct fabrication of flexible microsupercapacitors with strong bonding interfaces. The cotton-derived film demonstrates excellent printability, swellability, degradability, and retained hydroxyl groups, making it superior to plastic in wearable device manufacturing and printing field.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Sihong Ye, Mingli Xu, Hui Sun, Ying Ni, Rui Wang, Runping Ye, Lingzhong Wan, Fangzhi Liu, Xiaonan Deng, Juan Wu
Summary: A novel magnetic bio-adsorbent was synthesized by modifying cotton linter (CL) cellulose with deep eutectic solvents (DESs) and Fe3O4 magnetic nanoparticles. The adsorption capacity of the bio-adsorbent for Cu2+ was significantly improved due to the presence of Fe3O4 nanoparticles and the dissolution of DES, which increased the ion-exchange ability and chelation reaction of Cu2+. The adsorption behavior was well described by the Freundlich isotherm model and quasi-second-order kinetics model, indicating multiple adsorption mechanisms.
Article
Materials Science, Textiles
Jiangxin Ding, Haifeng Wang, Zhen Dong
Summary: A new strategy for reducing fiber strength loss during the extraction of cotton stalk bark fibers was investigated. By introducing a cationic modification pretreatment, the fiber strength loss was lowered and high-quality CSBF with good fineness and high breaking strength was obtained.
FIBERS AND POLYMERS
(2023)
Article
Biochemistry & Molecular Biology
Jinxin Lan, Jiazhen Chen, Ruiqi Zhu, Changmei Lin, Xiaojuan Ma, Shilin Cao
Summary: Modified fibers with chitosan oligosaccharide were prepared and showed sustained antibacterial and antiviral performance. The fibers had washing durable activity and potential applications in protective clothing and hygiene products.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Jing Wu, Qingjun Ding, Wen Yang, Luoxin Wang, Hua Wang
Summary: This study investigated the influence of submicron hydrophilic fibers on the hydration and microstructure of Portland cement paste. The results showed that the addition of submicron fibrillated cellulose fibers can accelerate the cement hydration rate and improve the microstructure of cement paste. This is because the scale of the fibers matches the size of the C-S-H gel and provides potential nucleation sites for hydration products, leading to a more homogeneous and compact microstructure.
Article
Chemistry, Multidisciplinary
Jian Shen, Jiangbin Yu, Hao Luo, Xiang Liu, Qiongzhi Zhou, Tianxiang Wei, Xinyi Yu, Yahui Wu, Yifei Yu, Mingjie Li
Summary: In this study, nitrogen-doped carbons were prepared by carbonizing a mixture of cotton pulp and melamine, resulting in improved specific capacitance through pore and surface modification. The nitrogen-doped carbons exhibited high specific capacitance and good stability, providing a new cost-effective carbon-based material for energy storage applications.
Article
Nanoscience & Nanotechnology
Huijie Liu, Md Kowsar Alam, Mantang He, Ye Liu, Liming Wang, Xiaohong Qin, Jianyong Yu
Summary: Renewable polydopamine (PDA)-functionalized cellulose aerogels (CAs) have been designed for clean water generation, with excellent photothermal conversion performance and water purification ability. The CAs can efficiently achieve water evaporation, with low material cost and recyclability, promising to reduce energy consumption and environmental impact of cotton textiles.
ACS APPLIED MATERIALS & INTERFACES
(2021)
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, Physical
Sharmin Sultana, Malik Abdul Rub, Marzia Rahman, Shahed Rana, Mohammad Majibur Rahman, Md Anamul Hoque, Yousef G. Alghamdi, Abdullah M. Asiri
Summary: In this study, the aggregation behaviors of PVA and TTAB in alcohols/diols media were investigated using conductivity measurements. The physico-chemical parameters and thermodynamic properties were determined. The results showed that the CMC values varied in different solvents, indicating the significant influence of solvents on the micelle formation of TTAB + PVA mixture. It was also found that PVA molecules interacted exclusively with TTAB through hydrogen bonding, ion-dipole, and hydrophobic interactions.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Chemical
Md. Anamul Hoque, Shamim Mahbub, Md. Tuhinur R. Joy, Malik Abdul Rub, Shahed Rana, Dileep Kumar, Yousef G. Alghamdi, Abdullah M. Asiri, Mohammed Abdullah Khan
Summary: The micellization behavior of CTAB and BSA mixture in different diols media was studied. The critical micelle concentration (cmc) values of the mixture decreased with increasing temperature and followed the order: cmc(1,5-PD)>cmc(1,2-PrD)>cmc(2,3-BD). The degree of micelle ionization (a) increased with carbon chain length and temperature. The thermodynamic parameters and the contribution of the solvent were also evaluated.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Chemistry, Organic
Mohammad Asad, Muhammad Nadeem Arshad, Abdullah M. Asiri, Mohammed T. N. Musthafa, Salman A. Khan, Mohd Rehan, Mohammad Oves
Summary: A series of novel N-methylspiropyrrolidine hybrids were synthesized using 1,3-dipolar cycloaddition reaction, and their structures, antibacterial activity, and mechanism of action were investigated.
POLYCYCLIC AROMATIC COMPOUNDS
(2023)
Article
Environmental Sciences
Muzdalfa Almas, Amir Sada Khan, Asma Nasrullah, Israf Ud Din, Taghreed M. Fagieh, Esraa M. Bakhsh, Kalsoom Akhtar, Sher Bahadar Khan, Shahan Zeb Khan, Abrar Inayat
Summary: Local clay-alginate beads loaded with sodium dodecyl sulfate (SDS) have been prepared and investigated as an effective adsorbent for methylene blue (MB) adsorption. The beads exhibit high adsorption efficiency and recyclability, making them a promising adsorbent for MB extraction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(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
Kalsoom Akhtar, Esraa M. Bakhsh, Sher Bahadar Khan, Mansoor Khan, Abdullah M. Asiri
Summary: In this project, lanthanum oxide doped tin oxide (SnLa2O5) nanomaterial was prepared and characterized for its catalytic performance. The efficiency and kinetics of SnLa2O5 and SnLa2O5/CMC-Alg in reducing potassium ferricyanide (K3[Fe(CN)6]) were studied. The results showed that SnLa2O5/CMC-Alg exhibited fast and efficient catalytic reduction of K3[Fe(CN)6]. It has the potential to replace commercial catalysts due to its cost-effectiveness and simple treatment route.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Analytical
Yao Feng, Yan Wei, Shujie Liu, Peize Li, Kalsoom Akhtar, Esraa M. Bakhsh, Sher Bahadar Khan, Yan Shen
Summary: In this study, the HER performance of FeNi LDH is significantly improved by loading Ru. The Ru-loading FeNi LDH exhibits excellent HER activity, surpassing commercial Pt/C electrode and other advanced catalysts. The combination of Ru and FeNi LDH greatly enhances charge transfer rate, active sites, and reduces the kinetic energy barrier, thereby enhancing HER performances.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Kalsoom Akhtar, Sher Bahadar Khan, Esraa M. Bakhsh, Abdullah M. Asiri
Summary: A nanocomposite of nickel oxide and tin oxide (NiO-SnO2) coated on natural cotton fibers (CF) with carboxymethylcellulose (CMC) as a binder was studied as a catalyst for MB reduction. The NiO-SnO2/CF catalyst showed the highest rate constant for MB reduction and achieved 98% reduction in 4.0-3.0 min with increased catalyst amount. The stability, recyclability, and optimum conditions for reduction were investigated. NiO-SnO2/CF exhibited superior catalytic activity, stability, and recyclability, making it an efficient catalyst for MB reduction.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Abdullah M. Asiri, Adil Raza, Muhammad Khuram Shahzad, Mohammed M. Fadhali, Sher Bahadar Khan, Khalid Ahmad Alamry, Soliman Y. Alfifi, Hadi M. Marwani
Summary: In this study, a ZrO2 modified S-doped g-C3N4 nanocomposite was synthesized and used for solar degradation of tetracycline hydrochloride. The addition of persulfate ions significantly enhanced the degradation efficiency, while the heterojunction formation at the ZrO2/S-g-C3N4 interface improved the electron-hole separation efficiency.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Polymer Science
Aftab Aslam Parwaz Khan, Mallikarjunagouda B. Patil, Laxmibai P. Rathod, Shivalila G. Vader, Pankaj Raizada, Pardeep Singh, Maha M. Alotaibi, Mohammad Omaish Ansari, Anish Khan, Naved Azum, Malik Abdul Rub, Muhammad Nadeem Arshad, Abdullah M. Asiri
Summary: The study assessed the potential of nanocomposite membranes (NCMs) made of sodium alginate and embedded with synthesized zeolitic imidazole framework-8 (ZIF-8) as fillers for separating gaseous mixtures generated by methane reforming. ZIF-8 crystals were synthesized through hydrothermal synthesis, with sizes ranging from 50 to 70 nm. NCMs with 15% filler loading (synthesized ZIF-8) outperformed neat polymer membranes in terms of H-2 permeability and selectivity, achieving a purity of up to 95%. However, NCMs did not perform better than neat polymer membranes in separating gas mixtures. The combination of ZIF-8 and sodium alginate as fillers is a new and worth investigating.
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
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
Chemistry, Physical
Mohammad Asad, Muhammad Nadeem Arshad, Abdullah M. Asiri, Hadi M. Marwani, Khalid A. Alamry, Mohammad Mahboob Alam, Syed Nazreen, Ahmed A. Elhenawy, Mohammed M. Rahman
Summary: N-Acylated-2-pyrazolines (NA2Pyr) were synthesized using chalcone and hydrazine hydrate, and their structures were determined. A metal ion sensor for lead (Pb2+) was developed by combining a conducting coating binder (PEDOT:PSS) with a NA2Pyr modified electrode (NA2Pyr/GCE). The sensor exhibited high sensitivity and a wide linear dynamic range.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Biochemistry & Molecular Biology
Zunera Khalid, Syed Salman Shafqat, Hafiz Adnan Ahmad, Munawar Ali Munawar, Sadaf Mutahir, Safaa M. Elkholi, Syed Rizwan Shafqat, Rahila Huma, Abdullah Mohammed Asiri
Summary: Diabetes is a chronic metabolic disorder characterized by high blood sugar levels due to insulin deficiency or ineffective use. Alpha-glucosidase inhibitors are commonly used to control hyperglycemia, but can cause side effects. This study synthesized and tested a new series of compounds for their alpha-glucosidase inhibition potential. The compounds 14k and 14l showed strong inhibitory activity and in silico studies confirmed their interactions with the enzyme. This research provides potential candidates for the development of new antidiabetic drugs.
Article
Chemistry, Multidisciplinary
Yousaf Khan, Uzma Sharafat, Saima Gul, M. I. Khan, Muhammad Ismail, Murad Ali Khan, Rafia Younus, Sher Bahadar Khan
Summary: Environmental remediation of toxic organic pollutants through catalytic degradation is a highly researched topic. The major problems in this field are organic dyes and fossil fuels as pollutants. The efficient removal of organic dyes from water systems is a global concern for both drinking water and wastewater treatment. In this study, ZnO-ZnS-CdO-CdS quaternary core-shell nanocomposites were successfully synthesized using Ricinus communis and hydrazine hydrate. The nanocomposites exhibited good performance in hydrogen gas production from Brassica campestris leaf extract and degradation of Congo red and methyl red dyes.
GREEN PROCESSING AND SYNTHESIS
(2023)