Article
Polymer Science
Ilse Paulina Verduzco-Navarro, Eduardo Mendizabal, Jose Antonio Rivera Mayorga, Maite Renteria-Urquiza, Alejandro Gonzalez-Alvarez, Nely Rios-Donato
Summary: This study investigated the removal of arsenate ions from aqueous solutions using chitosan-magnetite hydrogel beads. Equilibrium and kinetic data were analyzed and fitted to mathematical models. The Langmuir model was found to best fit the equilibrium data, while the pseudo-first order kinetic model was observed to best fit the kinetic data. The pH of the solution was observed to increase with increasing contact time due to the protonation of amine groups in the hydrogel. The interaction between chitosan-magnetite and chitosan-magnetite-arsenate was determined by XPS. The fixed-bed column experiment showed non-ideal behavior attributed to the increase in pH of the effluent caused by proton transfer to the Chitosan-magnetite hydrogels.
Article
Polymer Science
Aida Syafiqah Abdul Rahman, Ahmad Noor Syimir Fizal, Nor Afifah Khalil, Ahmad Naim Ahmad Yahaya, Md. Sohrab Hossain, Muzafar Zulkifli
Summary: Scientists and environmentalists are seeking environmentally friendly adsorbents isolated from biobased materials for the efficient removal of heavy metals from industrial effluents, in order to address the issue of secondary waste generated by inorganic adsorbents.
Article
Environmental Sciences
Tainara Vieira, Valter Antonio Becegato, Alexandre Tadeu Paulino
Summary: This study investigated the adsorption characteristics of 2,4-dichlorophenoxyacetic acid on different hydrogel materials, revealing that adsorption is influenced by various factors and confirming the adsorption mechanism through various tests. The synthesized hydrogels were found to be efficient solid matrices for the removal of 2,4-dichlorophenoxyacetic acid and chemical oxygen demand from water pollution.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Chemistry, Physical
Tainara Vieira, Samantha E. S. Artifon, Cassiele T. Cesco, Pamela B. Vilela, Valter A. Becegato, Alexandre T. Paulino
Summary: The study evaluated chitosan-based hydrogel and chitosan/magnetite-based composite hydrogel as potential matrices for water treatment through sorption experiments with metals and dyes. Results showed that both hydrogels had good sorption capacities for methylene blue and cadmium. The interaction kinetics differed between the two hydrogel types, with the chitosan-based hydrogel showing a chemical reaction control for adsorption rate and the chitosan/magnetite-based composite hydrogel suggesting an active-site occupation rate proportional to non-occupied active sites.
COLLOID AND POLYMER SCIENCE
(2021)
Article
Chemistry, Analytical
Negar TaheriAshtiani, Bita Ayati
Summary: In this study, the capability of glutaraldehyde cross-linked magnetic chitosan nanoparticles as a heterogeneous electro-Fenton catalyst was investigated. The results showed that the catalyst efficiently degraded the dye and removed COD and TOC. Furthermore, the catalyst exhibited good reusability and negligible iron leaching, meeting the Iranian wastewater discharge standard.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Applied
Hussein E. Ali, Shaimaa M. Nasef, Yasser H. Gad
Summary: A nanocomposite hydrogel of chitosan/polypropenoic acid/ethylenediamine/magnetite (Cs/PPA/EDA/Fe3O4-NPs) was prepared using gamma irradiation, which exhibited superabsorbent and superparamagnetic properties and showed excellent adsorption capacity for the removal of hazardous and toxic dyes from waste solutions.
CARBOHYDRATE POLYMERS
(2022)
Review
Polymer Science
Karen Guillen-Carvajal, Benjamin Valdez-Salas, Ernesto Beltran-Partida, Jorge Salomon-Carlos, Nelson Cheng
Summary: Hydrogels are versatile biomaterials with three-dimensional, cross-linked, highly hydrated polymeric networks. They have a variety of biochemical and biophysical properties, allowing for diffusion of diverse molecules and control of cellular interactions. Hydrogels can be molded into different structures resembling surrounding tissues and bone defects. Their application in bone tissue engineering has garnered significant attention due to the beneficial bone improvement results achieved. Synthetic polymers have played a key role, but there is a trend towards using biological precursors like chitosan, collagen, and gelatin for their high biocompatibility, degradability, and mechanical control.
Article
Chemistry, Physical
Elizaveta Anastasova, Anastasia A. Belyaeva, Sergey A. Tsymbal, Denis A. Vinnik, Vladimir V. Vinogradov
Summary: This study develops a stable magnetite hydrosol and successfully synthesizes materials with different structures by controlling the concentrations and drying conditions. The effects are theoretically explained and the synthesized materials show excellent biocompatibility and hemostatic potential.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Review
Food Science & Technology
Antonio Castro Marin, Donato Colangelo, Milena Lambri, Claudio Riponi, Fabio Chinnici
Summary: Chitosan, a natural polymer recently approved as a wine additive, shows multifaceted functions in winemaking including antimicrobial, chelating, clarifying, and antioxidant activities. Further research is needed to fully understand its specific effects in wines and explore strategies to enhance its efficacy.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2021)
Article
Chemistry, Multidisciplinary
Xiongxi Shi, Yang Xu, Yan Zhang, Jiwen Si, Peiping Zhang, Wenqing Li, Yan Wang, Wei Zhang, Qian Gao, Shiding Miao
Summary: Two types of iron sulfide, highly crystalline pyrite and greigite, were synthesized via a hot-injection method and used in photo-Fenton catalytic reactions to degrade the organic dye Rhodamine B. The degradation efficiency of RhB by greigite reached 99.0% in 22 minutes under sunlight irradiation, while a similar removal efficiency was realized by pyrite in 35 minutes. The surface states of iron sulfides were found to be the main factors affecting the catalytic efficiency in the photo-Fenton reaction.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Ahmed. A. G. El-Shahawy, Medhat Zohery, S. I. El-Dek
Summary: The current study successfully synthesized a nanoformula and characterized it using various techniques. The formula demonstrated sustained drug release behavior in vitro and showed lower cytotoxicity compared to free ABE in MCF-7 cells. Additionally, the formula can be used as a contrast agent in MRI, leading to a decrease in signal intensity.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Pharmacology & Pharmacy
Cassiele T. Cesco, Artur J. M. Valente, Alexandre T. Paulino
Summary: Chitosan/DNA blend hydrogel and chitosan/pectin blend hydrogel were synthesized for releasing methylene blue, and characterized by various techniques. The study revealed that the methylene blue loading had different impacts on the hydrogels, with higher release rates observed in simulated gastric fluid. The release kinetics of methylene blue in the hydrogels followed a pseudo-second-order mechanism.
Article
Chemistry, Multidisciplinary
Seung Hun Park, Richard S. Kim, Wesley R. Stiles, Minjoo Jo, Lingxue Zeng, Sunghoon Rho, Yoonji Baek, Jonghan Kim, Moon Suk Kim, Homan Kang, Hak Soo Choi
Summary: Deferoxamine (DFO) is an FDA-approved iron-chelating agent with good therapeutic efficacy, but its short blood half-life poses challenges for patients who require frequent administrations. By integrating crosslinked hyaluronic acid and Pluronic F127 into an injectable hydrogel formulation, a prolonged release of DFO nanochelators is achieved, significantly extending the half-life and demonstrating potential for the treatment of iron overload disorders.
Article
Polymer Science
Mona Ebadi, Nurul Asikin-Mijan, Mohd Suzeren Md. Jamil, Anwar Iqbal, Emad Yousif, Ahmad Rifqi Md Zain, Tengku Hasnan Tengku Aziz, Muhammad Rahimi Yusop
Summary: It was found that the immobilization of palladium nanoparticles on superparamagnetic chitosan-coated manganese ferrite overcomes the challenge of aggregation and maintains high catalytic activity. The Pd-Chit@MnFe2O4 catalyst showed excellent catalytic performance in the reduction of 4-nitrophenol and 4-nitroaniline, with high turnover frequencies. The catalyst can be easily recovered by magnetic separation and exhibited good performance in the reductive deprotection of allyl carbamate.
Article
Biochemistry & Molecular Biology
Lin Zhao, Zhipan Feng, Yang Lyu, Jueying Yang, Lizhi Lin, Haochen Bai, Yujing Li, Yongqiang Feng, Yu Chen
Summary: An electroactive hydrogel was constructed by rapidly forming dynamic imine bonds between oxidized sodium alginate (OSA) and carboxymethyl chitosan (CMCS), and in situ forming silver nanoparticles (AgNPs) by UV irradiation. The hydrogel exhibited injectability, self-healing ability, biocompatibility, and antibacterial activities. It promoted cell proliferation and accelerated wound healing in a skin defect model.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Applied
Haichang Ding, Baoqiang Li, Yilin Jiang, Gang Liu, Shouzhi Pu, Yujie Feng, Dechang Jia, Yu Zhou
Summary: The pH-responsive UV-crosslinkable chitosan hydrogel was constructed by selectively modifying C-6-OH chitosan, allowing for active modulation of drug release.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Applied
Haichang Ding, Baoqiang Li, Zonglin Liu, Gang Liu, Shouzhi Pu, Yujie Feng, Dechang Jia, Yu Zhou
Summary: A new nonswelling pentenyl chitosan hydrogel was developed via UV crosslinking, which maintains a nonswelling state at biological temperature. The hydrogel showed no cytotoxicity in vitro and demonstrated minimal adverse effects in a rat model. The injectable and UV crosslinkable chitosan hydrogel holds potential applications in smart biomaterials and minimally invasive tissue engineering.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Physical
Qing Du, Daqing Wei, Su Cheng, Yaming Wang, Baoqiang Li, Dechang Jia, Yu Zhou
Summary: The formation mechanism of new bone tissues induced by the multilayer titania coating with Si-HA nanorods was revealed through PEO and MG treatments. The coatings showed excellent apatite-inducing ability and high interfacial bonding strength, indicating potential applications in hard tissue and teeth repair.
APPLIED SURFACE SCIENCE
(2021)
Article
Biochemical Research Methods
Baoqiang Li, Jianan Wei, Jinglin Kong, Liu Yang, Cuiping Li
Summary: A new detection method for sulfur mustard hydrolysis products in water was established using MEPS-nano-ESI-MS, with a detection limit of 1 ng/mL and linear range of 5-100 ng/mL (R-2 = 0.9911). The method proved to quickly detect contaminated water samples without chromatographic separation and derivatization, verifying the contamination of sulfur mustard on site.
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
(2021)
Article
Chemistry, Multidisciplinary
Zonglin Liu, Baoqiang Li, Yujie Feng, Dechang Jia, Caicai Li, Qingfeng Sun, Yu Zhou
Summary: The introduction of vacancies in a Ru composite structure with vacancy-rich carbon dots (CDs) leads to the construction of Ru@CDs, which exhibit excellent catalytic performance with a low overpotential of less than 30 mV at 10 mA cm(-2) in 1 m KOH, a small Tafel slope of less than 22 mV decade(-1), and robust stability even after 10,000 cycles. Spectroscopic characterizations and theoretical calculations show that the rich vacancies and electron interactions between Ru and CDs synergistically maximize the activity of the Ru@CDs electrocatalyst.
Article
Chemistry, Physical
Zonglin Liu, Baoqiang Li, Yujie Feng, Dechang Jia, Caicai Li, Qingfeng Sun, Yu Zhou
Summary: In this study, a hybrid material Ni(PO3)(2)/CNTs was designed with excellent HER performance and stability as a non-noble metal electrocatalyst. The pi-pi interaction between NiPc and CNTs, as well as the inlaid structure, effectively prevented corrosion and aggregation of nanoparticles, leading to remarkable HER performance.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
He Yu, Cong Wang, Fanyi Meng, Jin Xiao, Junge Liang, Hyunseok Kim, Sanghoon Bae, Danqing Zou, Eun-Seong Kim, Nam-Young Kim, Meng Zhao, Baoqiang Li
Summary: This research presents a microwave transduction-based humidity sensor with excellent real-time humidity detection and high sensitivity under microwave excitation, suitable for medical applications and wearable electronic devices.
Article
Chemistry, Multidisciplinary
Shuang Li, Jingwen Xu, Rui Li, Yongkang Wang, Maoyi Zhang, Jie Li, Shizhen Yin, Guodong Liu, Lijuan Zhang, Baoqiang Li, Qi Gu, Yewang Su
Summary: We present a stretchable electronic facial mask (SEFM) as a platform for facial healthcare, capable of integrating various sensors and actuators. A specific SEFM for sonophoresis is developed to enhance the delivery effect of a drug mask. Various approaches, including the design of a joined silicone layer and the single-side soft pressing (SSSP) technique, are employed to overcome technical challenges and can be extended to the design and fabrication of other stretchable electronics. The mechanical, thermal, electrical, and ultrasonic characteristics of the SEFM are validated through finite element analysis and experiments. Results from animal and human facial experiments demonstrate the SEFM's ability to accelerate drug delivery and increase skin moisture content.
Article
Chemistry, Physical
Zonglin Liu, Baoqiang Li, Yujie Feng, Dechang Jia, Caicai Li, Yu Zhou
Summary: This study successfully improves the activity and stability of carbon-supported ruthenium-based catalysts through the design of a special structure for the carbon carrier. The coexistence of sp(2) and sp(3) carbon nuclei in N-doped carbon dots effectively modulates the electronic structure of the active center Ru, improving the reactivity of the reaction intermediates and achieving excellent catalytic activity.
Article
Chemistry, Physical
Jiaxin Dong, Baoqiang Li, Jin Xiao, Guanxiong Liu, Vladimir Baulin, Yujie Feng, Dechang Jia, Aslan Yu Tsivadze, Yu Zhou
Summary: Carbon dots (CDs) have wide applications in metal ion recognition and detection, promising in environmental monitoring and biomedical science. However, due to the presence of multiple functional groups with different affinities, the prediction of recognized metal ions is limited. In this study, CDs with different chelating ligands were synthesized, and specific recognition of Fe3+ and Cu2+ was achieved. Exponential type functions were established to predict the specific recognition of metal ions. This study proposes a new strategy for specific recognition of heavy metal ions using tailor-made CDs with chelating ligands.
Article
Materials Science, Composites
Guanxiong Liu, Baoqiang Li, Zonglin Liu, Jiaxin Dong, Xuefeng Kang, Yujie Feng, Dechang Jia, Yu Zhou
Summary: Carbon dots/hydroxyapatite filler combines the ROS scavenging ability of carbon dots (CDs) and the mechanical property improvement ability of hydroxyapatite. CDs have optical fluorescence, regulate ROS, and have the ability to bind calcium ions. ROS-HA, synthesized by chelating CDs and hydroxyapatite, showed high scavenging rates for hydroxyl and superoxide radicals. It greatly improved the adhesion performance of hydrogel-based composites and has potential applications in wound dressing.
COMPOSITES COMMUNICATIONS
(2023)
Correction
Nanoscience & Nanotechnology
Guanxiong Liu, Baoqiang Li, Jie Li, Jiaxin Dong, Yujie Feng, Dechang Jia, Aslan Yu Tsivadze, Yu Zhou
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Guanxiong Liu, Baoqiang Li, Jie Li, Jiaxin Dong, Vladimir Baulin, Yujie Feng, Dechang Jia, Yuri V. Petrov, Aslan Yu Tsivadze, Yu Zhou
Summary: EGTA-derived carbon dots (EGTA-CDs) exhibit bone-targeting ability with a synthetic yield of 87.6%. EGTA-CDs show superior calcium ion affinity and better bone affinity compared to other derived carbon dots, indicating their potential as novel bone-targeting drugs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Yongliang Wang, Yaxin Xu, Yunfei Wang, Baoqiang Li, Chunfeng Wang, Zhidong Han, Ling Weng
Summary: In this study, layered chitosan hydrogel and layered magnetic chitosan hydrogel were successfully constructed by improving the reaction-diffusion process. These tailored hydrogels possessed ordered layered structures and enhanced mechanical properties, especially toughness. The yield strength of magnetic chitosan hydrogel was significantly improved with the addition of magnetite nanoparticles.
Article
Nanoscience & Nanotechnology
Dong Chen, Chaoqun Wang, Hongjun Yu, Guanxiong Liu, Baolin Qian, Bangliang Chen, Zhongyu Li, Yongzhi Zhou, Shangha Pan, Baoqiang Li, Yong Ma
Summary: In this study, chitosan-derived nitrogen-doped carbon dots (CNDs) with reactive oxygen species (ROS) scavenging capabilities were synthesized and applied in the prevention of hepatic ischemia-reperfusion injury (HIRI). CNDs showed scavenging ability against ROS, especially hydroxyl radicals. The results demonstrate that CNDs can alleviate liver damage, suppress the inflammatory response, and inhibit apoptosis triggered by liver ischemia/reperfusion operation.
ACS APPLIED NANO MATERIALS
(2023)
