Article
Materials Science, Multidisciplinary
Kai Feng, Guodan Wei, Mengfan Lu, Naiwei Gao, Yapei Wang, Zhaoxia Jin
Summary: Using cellulose nanocrystals as a skeleton, the dispersion of conjugated polymers in near-infrared composites can be optimized to improve photothermal conversion efficiency. Additionally, the CNC-based materials exhibit chiral-optical properties, making them suitable for developing unique multifunctional sensors.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Thermodynamics
Sreedevi Paramparambath, Muni Raj Maurya, Mohammad Talal Houkan, John-John Cabibihan, Kishor Kumar Sadasivuni
Summary: Paraffin wax, a commonly used phase-change material, has limitations in energy storage applications due to its low thermal conductivity. In this study, graphite and graphite-hydrogel were added to enhance the thermal conductivity and heat release properties of paraffin wax. The synthesized wax-graphite-hydrogel composite demonstrated significantly improved thermal conductivity and the potential to decrease the working temperature of semiconductor devices.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Yongyi Zhao, Yunsik Ohm, Jiahe Liao, Yichi Luo, Huai-Yu Cheng, Phillip Won, Peter Roberts, Manuel Reis Carneiro, Mohammad F. F. Islam, Jung Hyun Ahn, Lynn M. M. Walker, Carmel Majidi
Summary: Self-healing hydrogels have the potential to recover from physical damage caused by extreme strain, pressure, or tearing. However, their low electrical conductivity limits their application in stretchable and mechanically robust circuits. In this study, we developed an organogel composite with high electrical conductivity, low stiffness, and high stretchability by embedding silver microflakes and gallium-based liquid metal microdroplets in a poly(vinyl alcohol)-sodium borate matrix. The composite also exhibited spontaneous mechanical and electrical self-healing. Furthermore, we addressed the rapid drying issue of hydrogel materials by using an organic solvent, which maintained the properties of the composite for over 24 hours in an ambient environment. We demonstrated the potential applications of the self-healing organogel composite in soft robotics, soft circuits, and reconfigurable bioelectrodes.
NATURE ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Mengmeng Qin, Yajie Huo, Guoying Han, Junwei Yue, Xueying Zhou, Yiyu Feng, Wei Feng
Summary: In this study, a three-dimensional boron nitride network was formed by wrapping boron nitride nanosheets in melamine sponge, which improved the thermal conductivity of polyvinyl alcohol hydrogels. When the content of boron nitride nanosheets was 6 wt.%, the thermal conductivity of the hydrogel was doubled. The composite material has good thermal management ability and has important application prospects in the field of wearable flexible electronics.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Characterization & Testing
Ziyuan Li, Xia Li, Yifei Jiang, Qijun Ding, Wenjia Han
Summary: A composite hydrogel electrolyte based on PVA was synthesized in this study, showing good environmental stability and high ion migration efficiency, suitable for flexible zinc-air batteries with excellent cycle performance and discharge capacity.
Article
Polymer Science
Xiaohu Chen, Haonan Zhang, Jiashu Cui, Yanen Wang, Mingyang Li, Juan Zhang, Changgeng Wang, Zhisheng Liu, Qinghua Wei
Summary: Composite hydrogels based on PVA, GEL, OSA, GO, and SWNTs were successfully prepared in this study. These hydrogels exhibited excellent self-healing properties and the ability to transmit sensory signals, making them promising for electronic skin applications.
Article
Polymer Science
Zhujian Wu, Jiajie Zhang, Qingqing Lin, Yutian Zhu, Lian Wang, Yongjin Li
Summary: The tough hydrogel sensor with hydrogen-bonding network and slidable crosslinking shows outstanding stretchability, excellent recoverable performance, and high compressive strength. The Li-ion based hydrogel exhibits high sensitivity to a wide range of compressive strain and can be utilized to detect human motions.
Article
Chemistry, Multidisciplinary
Ming Yu, Wenhao Liu, Huimin Zhang, Guanjun Liu, Feng Luo, Dong Cao
Summary: A new composite hydrogel was constructed by cross-linking three kinds of polymer resin, with conductivity, moisture content and elastic modulus controlled by the dosage of specific ingredients. The artificial organs created from this hydrogel showed similar properties to real pig viscera, demonstrating great potential for applications.
JOURNAL OF EXPERIMENTAL NANOSCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Christine Arndt, Margarethe Hauck, Irene Wacker, Berit Zeller-Plumhoff, Florian Rasch, Mohammadreza Taale, Ali Shaygan Nia, Xinliang Feng, Rainer Adelung, Rasmus R. Schroeder, Fabian Schuett, Christine Selhuber-Unkel
Summary: The study presents a novel approach to fabricate hydrogel composites with outstanding electrical conductivity by microengineering graphene and polyacrylamide. The method allows for combining excellent conductivity of graphene with adaptable mechanical properties of polyacrylamide, while maintaining the original properties of the matrix. This approach shows promise for applications in bioelectronics and biohybrid robotics.
Article
Chemistry, Applied
Yi Qin, Guangling He, Yunlong Li, Yuhua Liu, Wenyan Liu, Lei Dong, Liangmin Yu, Li Wang
Summary: Composite amphiphilic hydrogel anti-fouling materials were prepared by mixing two different hydrogel prepolymers, which strengthened adhesion and improved anti-fouling performance through the hydrophobic and hydrophilic interactions.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Engineering, Environmental
Xiangdong Wang, Xiaoyu Wang, Menghan Pi, Rong Ran
Summary: This paper presents a new method to balance the electrical conductivity and mechanical strength of materials by embedding HEC in hydrogel, resulting in an organic hydrogel with high strength and high conductivity. Additionally, temperature-sensitive particles were added to prepare temperature-sensitive conductive fibers for multiple sensors in the future.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Ibrar Ibrar, Lilyan Alsaka, Sudesh Yadav, Ali Altaee, John L. Zhou, Ho Kyong Shon
Summary: This study proposes a biodegradable gravity-driven kappa-Carrageenan-vanillin hydrogel for biologically treated leachate wastewater treatment, reducing cost and brine management issues.
Article
Engineering, Geological
Qin Li, Jiannan Chen, Craig H. Benson, Daoping Peng
Summary: The high ionic strength of porewater in red mud suppresses montmorillonite swelling, making geosynthetic clay liners (GCLs) too permeable for effective use in red mud disposal facilities. Bentonite-polymer composite GCLs (BPC GCLs) have been developed as more resilient lining materials, with hydraulic conductivity influenced by the leachate's chemical properties and polymer type.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Thermodynamics
Sara Rbihi, L. Laallam, O. Bayousfi, A. Moubarik, A. Liba, A. Jouaiti
Summary: This article investigates the thermal conductivity of cellulose-based hydrogels. The results show that the amount and density of cellulose have significant effects on the thermal properties of hydrogels. Increased crosslinking bonds reduce the diffusion path of phonons, and the interface between cellulose and water plays an important role in the properties of hydrogels.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Energy & Fuels
Heegyeom Jeon, Jeong Ho Na, Yong Seok Kim, Seung-Keun Park, Youngjae Yoo
Summary: In this study, wave-selective emitter coolers were fabricated using glass bubbles and barium sulfate, and polyacrylonitrile nanofibers were electrospun on these coolers. The optical properties and cooling power were analyzed based on the ratio of glass bubbles and barium sulfate, as well as the electrospinning conditions. The cooler with the added electrospinning layer showed higher reflectivity and cooling power compared to the cooler containing only polydimethylsiloxane/glass bubbles and barium sulfate. This study improves the performance of previously studied passive radiative cooling.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Biochemistry & Molecular Biology
Zahra Gharehdaghi, Rahmatollah Rahimi, Seyed Morteza Naghib, Fatemeh Molaabasi
Summary: A new multifunctional nanocomposite CuG, consisting of Cu-TCPP MOF supported on GO nanosheets, was successfully fabricated for efficient drug loading and smart pH-responsive release in chemotherapy. In vitro experiments showed minimal cytotoxicity on normal cells and significant cancer cell-killing ability, indicating the potential for further biomedical investigations.
JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Mina Najafi, Ali Reza Akbarzadeh, Rahmatollah Rahimi, Mohammad Hossein Keshavarz
Summary: A novel QSPR model was presented to predict the photodegradation average rate of 4-NP and 4-CP by biomolecules. The model achieved high accuracy by calculating metal interaction with ligand and fragment effects, using measured values of 70 porphyrin complexes.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Physical
Kourosh Hamidian, Rahmatollah Rahimi, Mahboubeh Hosseini-Kharat, Mahdi Alavi
Summary: By employing a series of novel organic dyes as photosensitizers, new DSSCs were developed in this study, with surface modification of TiO2 by nitrogen and graphene doping. The relationship between the dye molecule structure and photovoltaic performance, as well as efficiency comparison when using different redox mediators, were investigated. Among the series, GNT/AD4 with triiodide/iodide electrolyte achieved the highest solar to electrical energy conversion efficiency.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Engineering, Environmental
Mahboubeh Rabbani, Javad Shokrayian, Rahmatollah Rahimi, Rezvaneh Amrollahi
Summary: Zinc oxide and doped zinc oxide nanorods were successfully synthesized using a simple template-free precipitation technique, with meso-tetrakis (4-sulfonatophenyl) porphyrin immobilized on the zinc oxide nanorods. The photocatalytic activity of TPPS/ZnO was found to be higher than that of pure zinc oxide and doped zinc oxide under visible light irradiation, as revealed by various characterization techniques and degradation studies of methylene blue.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Zahra Gharehdaghi, Rahmatollah Rahimi, Seyed Morteza Naghib, Fatemeh Molaabasi
Summary: In this study, two types of Cu-MOF-based nanocomposites, GO/Cu-TCPP and Fe3O4@Cu-3(BTC)(2), were investigated for loading and pH-sensitive release of doxorubicin (DOX). It was found that GO/Cu-TCPP had a higher adsorption capacity for DOX compared to Fe3O4@Cu-3(BTC)(2). The release of DOX from both nanocomposites was pH-sensitive, with GO/Cu-TCPP releasing a higher percentage of DOX at pH 5 than at pH 7.4. The difference in drug release between the two nanocomposites was attributed to their differences in drug loading capacity. The results indicate that both GO/Cu-TCPP and Fe3O4@Cu-3(BTC)(2) nanocomposites have low toxicity and good biocompatibility.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Hossein Shahriyari Far, Mahdi Hasanzadeh, Mina Najafi, Rahmatollah Rahimi
Summary: In this study, nanoclay was decorated with chromium-based MOF (MIL-101) nanostructures to enhance its dye adsorption capacity. The modified Clay/Cr-MOF composite showed a crystalline structure with high thermal stability, as well as a large specific surface area and porosity, which are beneficial for wastewater treatment. The adsorption experiments demonstrated that the MOF-modified nanoclay had excellent adsorption capacity and selective dye removal efficiency, with the ability to be regenerated for multiple cycles.
Review
Chemistry, Multidisciplinary
Sajad Khanlarkhani, Ali Reza Akbarzadeh, Rahmatollah Rahimi
Summary: This review focuses on the electron transfer mechanisms and applications of porphyrinoid fluorophores. By discussing the kinetics and mechanisms, researchers have revealed the unique optoelectronic properties of these dyes and demonstrated their potential in biological system probing, materials science, and protein interactions.
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Hossein Shahriyari Far, Mahdi Hasanzadeh, Mina Najafi, Rahmatollah Rahimi
Summary: In this study, a novel approach involving the in-situ growth of metal-organic frameworks (MOFs) over clay minerals is presented for the rapid and efficient removal of dyes from wastewater. The effect of mono-metal and bi-metal MOFs with different morphologies on the adsorption capacity of the developed MOF/clay composites is studied. The resulting composite exhibits a stable structure with superb adsorption capacity, surpassing the state-of-the-art clay-based adsorbents.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Hoorie Lotfi, Mansoor Anbia, Rahmatollah Rahimi, Fatemeh Yazdi
Summary: This study reports the potential of a cost-effective activated carbon/chitosan/zero-valent iron nanocomposite on the adsorption and degradation of phenolic contaminants. The results show that the nanocomposite has high adsorption capacity and removal efficiency for phenol, 2-chlorophenol, and 2,4-dichlorophenol. The Fenton oxidation process was also found to be spontaneous and effective in transforming the contaminants into less hazardous compounds.
Article
Chemistry, Inorganic & Nuclear
Mahdi Sedghi, M. Hosseini-Kharat, Rahmatollah Rahimi, Mahboubeh Rabbani
Summary: This study investigates the photocatalytic behavior of titanium dioxide (TiO2) layers coated on an aluminum alloy (AA5083) substrate. The TiO2/AA5083 composites show enhanced photocatalytic performance, with the TiO2(3)/AA composite prepared at a calcination temperature of 550 degrees C demonstrating the highest activity.
INORGANIC AND NANO-METAL CHEMISTRY
(2023)
Article
Polymer Science
Mina Najafi, Rahmatollah Rahimi
Summary: A novel UiO-66/Cloisite-30B nanocomposite is synthesized and characterized in this study. The nanocomposite shows satisfying efficiency in the removal of dyes, indicating its potential for wastewater treatment.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Multidisciplinary Sciences
Sajedeh Tehrani Nejad, Rahmatollah Rahimi, Mahboubeh Rabbani, Sadegh Rostamnia
Summary: This study focuses on the synthesis of novel nanocomposites with antibacterial activity through a green procedure. The synthesized nanocomposites showed therapeutic effects on breast cancer and exhibited excellent antibacterial properties.
SCIENTIFIC REPORTS
(2022)
Review
Chemistry, Multidisciplinary
Zahra Heravifard, Ali Reza Akbarzadeh, Leila Tayebi, Rahmatollah Rahimi
Summary: Covalent organic frameworks are lightweight, ordered, porous organic polymeric compounds that can be used in various industrial applications. There have been significant advances in their design, synthesis, and applications.
Article
Chemistry, Multidisciplinary
Leila Tayebi, Rahmatollah Rahimi, Ali Reza Akbarzadeh
Summary: A reliable QSPR model was established for predicting the evolution rate of CO2 photoreduction over porphyrin-based MOFs. Cu-PMOF and Co-PMOF were successfully synthesized with high surface areas. Theoretical and experimental results showed satisfactory HCOOH evolution rates for both MOFs.
Article
Chemistry, Multidisciplinary
Hossein Shahriyari Far, Mina Najafi, Mahdi Hasanzadeh, Rahmatollah Rahimi
Summary: This study successfully fabricated a highly porous composite of metal-organic framework and clay using 3D printing technology. The composite demonstrated a large specific surface area and showed rapid and efficient removal of organic pollutants.
NEW JOURNAL OF CHEMISTRY
(2022)
