Article
Engineering, Environmental
Yaoyao Huang, Chao Hu, Yanyan An, Zikang Xiong, Xuebin Hu, Guizhi Zhang, Huaili Zheng
Summary: A novel adsorbent, phosphorylated chitosan-coated magnetic silica nanoparticles, was successfully fabricated and used for highly selective adsorption of lead. The adsorbent exhibited excellent acid resistance and selective capture of lead, showing potential for efficiently removing lead from aqueous solutions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Crystallography
Xueli Mei, Shihao Li, Yaoyao Chen, Xueli Huang, Yali Cao, Vitaliy P. Guro, Yizhao Li
Summary: The dissipation of energy in the form of heat causes a huge energy loss across the globe. Thermal insulation materials, such as silica aerogels, have great potential in alleviating the energy crisis due to their high surface area and low thermal conductivity. However, their mechanical fragility has limited their applications. In this study, silica-chitosan composite aerogels with different ratios were prepared and tested, and the results showed that the 1:1 ratio of sodium silicate aqueous solution and chitosan solution resulted in the best performance.
Article
Materials Science, Ceramics
Wenxian Lian, Jie Zhang, Weixin Liu, Kun Liu, Shaokun Tang
Summary: In this study, a direct sol-blending-gel combing freezing drying technique is used to create a TMCS-modified natural polysaccharide-reinforced chitosan-silica aerogel. The resulting aerogel possesses a three-dimensional network structure and exhibits excellent thermal conductivity and hydrophobicity. It can withstand large strains without brittle rupture. This bio-sourced, renewable, and nontoxic aerogel material holds great potential for various applications and represents a significant step towards the commercialization of biopolymer-silica aerogels.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Applied
Hai-Long Jiang, Quan-Bin Fu, Ming-Lin Wang, Jin-Ming Lin, Ru-Song Zhao
Summary: A novel porous composite (Fe3O4@TAPB-COF@ZIF-8) was developed for magnetic solid-phase extraction (MSPE) of bisphenols, achieving low detection limits, wide linear range, good repeatability, and satisfactory recoveries. The method established by optimizing MSPE in combination with high-performance liquid chromatography is convenient and sensitive for bisphenol analysis.
Article
Engineering, Chemical
Gizem Ozturk, Yeseren Saylan, Adil Denizli
Summary: In this study, a new composite carrier was developed by embedding molecularly imprinted magnetic silica microspheres in cryogels for adsorption of tyrosine. The composite cryogel carrier exhibited high adsorption capacity, selectivity, and reusability, with a maximum adsorption capacity of 62.27 mg/g in pH 8.0 phosphate buffer solution. Competitive binding tests showed high selectivity of the composite cryogel carrier, and the Langmuir isotherm model fitted well with the adsorption data.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Applied
Yongjun Sun, Yuanyuan Yu, Xing Zheng, Aowen Chen, Huaili Zheng
Summary: This study investigated the structure, performance, and flocculation process of three magnetic flocculants, with MC-g-PAA showing larger floc size and fractal dimension. The results also demonstrated that under certain conditions, MC-g-PAA achieved maximum floc size and fractal dimension values.
CARBOHYDRATE POLYMERS
(2021)
Article
Engineering, Environmental
Haifeng He, Xiangying Meng, Qinyan Yue, Weiyan Yin, Yue Gao, Pai Fang, Liang Shen
Summary: In this study, a novel magnetic mesoporous silica/chitosan (MMS/CS) composite was synthesized using the thiol-ene click reaction strategy for selective capture and reuse of toxic Hg(II) from aqueous media. The obtained materials exhibited high Hg(II) uptake capacity and rate, and could be utilized as efficient catalysts for organic transformations. This work provides a new and facile method for preparing chitosan-based functional materials with promising application potentials in environmental and catalytic fields.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Sofia F. Soares, Sara Fateixa, Tito Trindade, Ana L. Daniel-da-Silva
Summary: A versatile synthetic route was reported for the preparation of nearly monodispersed spherical gelatin-silica hybrid nanoparticles. The method is effective for both gelatin type A and B, using different alkoxysilane coupling agents. ICPTES is more suitable for producing uniform nanospheres with narrow size distribution, while GPTMS increases the surface roughness of the particles. The hybrids are thermo-sensitive and can be used for thermally controlled drug-delivery systems.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Nicolas Debons, Kenta Matsumoto, Noriyuki Hirota, Thibaud Coradin, Toshiyuki Ikoma, Carole Aime
Summary: The study involves the preparation of bionanocomposites from tilapia fish scale collagen and multifunctional silica nanoparticles under high magnetic field, showing the potential of these scaffolds to improve cell performance.
Article
Polymer Science
Wei Zhang, Wentao Zhou, Zisen Zhang, Di Zhang, Zhengzheng Guo, Penggang Ren, Fei Liu
Summary: This study improves the mechanical properties and thermal stability of chitosan films by adding a plasticizer (sorbitol) and nano-filler (SiO2). The addition of sorbitol significantly increases the elongation at break of chitosan films, while nano-SiO2 further enhances the flexibility and toughness of the composite films.
Article
Engineering, Chemical
Taishi Kataoka, Yasuhiko Orita, Yusuke Shimoyama
Summary: In this study, a photothermal adsorbent was developed for energy-saving DAC process, which can release CO2 through light irradiation. The photothermal adsorbent showed better performance in CO2 adsorption and release compared to the nonphotothermal adsorbent. The temperature of the photothermal adsorbent increased significantly under light irradiation, achieving efficient CO2 release.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Saiful, Ulfa Riana, Muliadi Ramli, Muhammad Iqrammullah, Yanuardi Raharjo, Yusuf Wibisono
Summary: Inorganic-organic composite membranes (IOCMs) are an efficient method for purifying crude biodiesel, offering a simple process and economic benefits. By incorporating rice husk-derived silica filler into a chitosan matrix, impurity levels can be significantly reduced to meet standardized quality requirements.
Article
Materials Science, Paper & Wood
Samira Salehi, Mojtaba Hosseinifard, Ali Mohammadi Meyabadi
Summary: Different types of core-shell magnetic nanoparticles were compared for vanadium uptake, and the Hollow Fe3O4@SiO2@CT showed the highest decontamination potential. The optimal operational conditions for vanadium adsorption were determined using response surface methodology. The study also evaluated the adsorption capacity of Hollow Fe3O4@SiO2@CT for lead removal after vanadium uptake, showing promising potential in water treatment.
Article
Nanoscience & Nanotechnology
Jing-Yuan Ma, Kai-Xuan Wang, Ming Ma, Yu Zhang
Summary: DNA is an emerging storage medium with better storage density and life. However, precision of information reading and storage stability are key limitations. A switchable DNA storage nanocomposite structure was designed and developed, providing a novel solution for efficient DNA storage.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Environmental
Teng-Wen Zhao, Han Wu, Yang Jin, Xie-Yin Li, Gui-Fu Zuo, Man-Man Wang
Summary: Sensitive monitoring of environmental contaminants is important, and in this study, a facile hydrothermal method was used to prepare a mesoporous graphitic carbon nitride/cobalt ferrite composite as an adsorbent for bisphenols in water samples. The method showed high adsorption capacity, short extraction time, and good recoveries, making it a promising approach for sensitive and rapid determination of bisphenols in environmental water samples.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
