Review
Materials Science, Multidisciplinary
Yutong Gong, Lei Xie, Chunhong Chen, Jinrong Liu, Markus Antonietti, Yong Wang
Summary: Hydrothermal carbonization (HTC) is a sustainable and green technique for producing novel carbon materials. The advances in precise engineering of carbonaceous materials through modified HTC processes are summarized in this review. The control of HTC set screws for shaping and/or pore-creation within targeted nanostructured carbonaceous materials is elucidated, along with the discussed benefits for applications. This review could inspire further insight into the HTC process and broader application of carbon nanostructures made from renewable resources.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yulong Huang, Yuxuan Chen, Yong Hu, Travis Mitchell, Lu An, Zheng Li, Jason Benedict, Huashan Li, Shenqiang Ren
Summary: A promising design strategy for next-generation molecular magnetoelectrics has been proposed, which integrates molecular magnetism and electric conductivity through an in situ cross-linking strategy. This approach has successfully synthesized flexible molecular-based magnetoelectronics by cross-linking magnetic coordination networks that incorporate conducting chain building blocks, achieving significant improvements.
Article
Energy & Fuels
Fubin Chen, Gui Chen, Pengfei Huang, Mingtao Zheng, Yong Xiao, Hang Hu, Yeru Liang, Yingliang Liu, Hanwu Dong
Summary: In this work, CH3COOH/(NH4)2HPO4 dual-assisted hydrothermal carbonization (DA-HTC) was used to prepare chitosan derived porous carbon. The effects of the addition sequence and ratio of the two additives on hydrochar and porous carbon were systematically studied. The DA-HTC process significantly improved the carbonization degree and surface state of the hydrochar, resulting in optimized KOH activation. The obtained porous carbon exhibited enhanced specific area and electrochemical performance, making it a promising material for energy storage devices like supercapacitors.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Polymer Science
Wenjin Wu, Han Yang, Jiakang Liu, Yiqian Luo, Guanhuan Mo, Zhigao Hu, Lidong Zhang, Kun Huang
Summary: A facile method for producing recyclable polyamide materials is developed by constructing linear polymer chains through a Schiff base reaction and crosslinking them with bismaleimide. The resulting polyamide material, GF-BMs, exhibits high tensile strength and good solvent resistance. The presence of thermally reversible Diels-Alder covalent bonds and dynamic imine bonds in the polymer network enables fast reprocessing, self-healing, and recyclability, offering a new idea for recyclable materials.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Polymer Science
Haojie Zhu, Yongming Chen, Shuai Huang, Yuan Wang, Ru Yang, Huiyu Chai, Fang Zhu, Qinghong Kong, Yunlong Zhang, Junhao Zhang
Summary: Two-dimensional layered ammonium vanadium oxalate-phosphates (AVOPh) were synthesized through a hydro-thermal method and dispersed into a poly(vinyl alcohol) (PVA) matrix to prepare composites. The incorporation of AVOPh significantly improved the thermal stability and flame retardancy of the composites, showing excellent flame retardant performance.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Qin Wang, Jinxuan Ren, Dan Wang, Liling Cao, Xuehua Dong, Ling Huang, Daojiang Gao, Guohong Zou
Summary: Two fluorine antimony nitrates, (NH4)(3)SbF3(NO3)(3) and (NH4)(3)SbF4(NO3)(2), were successfully synthesized by a low temperature molten salt method. Despite the presence of NO3- groups and similar Sb-polyhedra, these compounds exhibit different macroscopic centricities. The noncentrosymmetric (NH4)(3)SbF3(NO3)(3) demonstrates strong second harmonic generation, large birefringence, and a large band gap, indicating its potential as a UV nonlinear optical material.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Applied
Xiuying Han, Huiliang Wen, Yu Luo, Jun Yang, Wenhao Xiao, Jianhua Xie
Summary: The chemically modified porous starches showed higher thermal stability and adsorption performance compared to the original PS, while maintaining the crystal type unchanged. The solubility and swelling power of the modified porous starches were altered by the chemical modifications.
FOOD HYDROCOLLOIDS
(2022)
Article
Chemistry, Applied
Gustavo A. Duarte, Maria C. Bezerra, Silvia H. P. Bettini, Alessandra A. Lucas
Summary: This article reports the chemorheological study of cross-linked starch films using citric acid as the cross-linking agent. The study found that a CA concentration of 10 phr showed a significant increase in storage modulus during the cross-linking process. Infrared spectroscopy analysis validated the results. Additionally, the mechanical properties showed a plasticizing effect at high concentrations of citric acid. The research demonstrated the usefulness of chemorheology in studying starch cross-linking and evaluating cross-linking in other polysaccharides and cross-linking agents.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Applied
Yan Min, Jie Yi, Rui Dai, Wentao Liu, Hui Chen
Summary: In this study, an efficient and greener wet process for preparing cross-linked starch materials was proposed by enhancing the cross-linking performance between sodium hexametaphosphate (SHMP) and starch with the aid of urea. The cross-linking efficiency of this novel wet process was greatly improved by urea, resulting in higher degree of substitution (DS) of urea-phosphorylated cross-linked starch (UPCS) compared to conventional phosphorylated cross-linked starch (CPCS). The structural difference between UPCS and CPCS was confirmed by using 31P NMR and 13C NMR techniques. UPCS showed better thermal stability, water resistance, acid and alkali resistance, and steady shear tolerance properties due to the structural reinforcement of starch by urea. This study provides a facile wet process for the fabrication and application of cross-linked starch materials.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Multidisciplinary
Manuel Vazquez Sulleiro, Ramiro Quiros-Ovies, Mariano Vera-Hidalgo, I. Jennifer Gomez, Victor Sebastian, Jesus Santamaria, Emilio M. Perez
Summary: The study describes a simple covalent cross-linking method to build 2H-MoS2-MoS2 homostuctures, creating specific molecular sized spaces between MoS2 sheets.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Materials Science, Ceramics
Wenyan Huang, Sridhar Komarneni, Young Dong Noh, Kunfeng Chen, Dongfeng Xue, Hiroaki Katsuki, Jianfeng Ma, Xiaoqiang Xue, Hongjun Yang
Summary: Microwave-hydrothermal synthesis of α-Sn(HPO4)2•H2O (α-SnP) was achieved in as low as 5 minutes at 194 ℃, greatly reducing the reaction time compared to previous methods. The super fast synthesis was attributed to localized superheating, where nucleation and reactions occurred rapidly. Characterization using various microscopy techniques revealed different morphologies of α-SnP under varying conditions.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Huiyu Li, Na Li, Pingping Zuo, Shijie Qu, Fangfang Qin, Wenzhong Shen
Summary: The development of high-performance bifunctional electrocatalysts for oxygen evolution reaction and heavy metal ion (HMI) detection is significant and challenging. A nitrogen, sulfur co-doped porous carbon sphere bifunctional catalyst was designed and fabricated, which showed excellent HMI detection performance and oxygen evolution reaction activity due to the synergistic effect of pore structure, active sites and nitrogen, sulfur functional groups.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Energy & Fuels
Shijie Yu, Peng Zhao, Xiaoxiao Yang, Qinghai Li, Yanguo Zhang, Hui Zhou
Summary: Hydrothermal treatment of pectin was conducted to investigate its properties at different stages. Gelation and hydrolysis of pectin resulted in the formation of pectin-derived hydrothermal carbon through polymerization of liquid monomers. Furthermore, the hydrothermal carbon underwent carbonization, dehydration, and aromatization, transforming the irregular pectin structure into carbon spheres.
Article
Food Science & Technology
Naaznee Mohan, John J. Mellem
Summary: This study investigated the structural and physicochemical characteristics of porous starches prepared using different methods. The results suggest that these porous starches may have potential applications in delivery systems, improving drug solubility, and dye adsorption.
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Mayank Kumar Malik, Vipin Kumar, Prince Prashant Sharma, Jaspal Singh, Shivkanya Fuloria, Vetriselvan Subrimanyan, Neeraj Kumar Fuloria, Pawan Kumar
Summary: This study analyzed the physical and chemical properties of mandua starch after treatment with epichlorohydrin, and investigated its digestion resistibility through experiments with simulated digestive fluids. The results showed significant changes in the swelling capacity, solubility, and degree of cross-linking of mandua starch after treatment, resulting in the formation of resistant starch. This study provides potential applications for the development of food, nutraceuticals, and pharmaceutical preparations.