Article
Nanoscience & Nanotechnology
Xin Long, Xingrong Wu, Xiongbang Wei, Jian Yu, Sizhe Wang, Lichun Zhou, Jiaxuan Liao
Summary: Conventional SiO2 aerogels made of 0-dimensional nanoparticles lack large-scale deformation capabilities and have poor mechanical properties, limiting their further development and application. In this study, a scalable strategy is proposed to construct a nanoporous network in SiO2 aerogels, which results in high strengths, excellent deformabilities, flexible processability, and good structural stability. The aerogel also exhibits low thermal conductivities and superhydrophobic properties, making it suitable for thermal insulation in extreme environments where comprehensive mechanical and hydrophobic properties are required.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yuqing Han, Youqing Wu, Sheng Huang, Hong Zhang, Zijun Liang, Xuebo Guan, Shiyong Wu
Summary: SiZrOC aerogels were successfully synthesized through the pyrolysis of the zirconium source-doped SiOC system. The introduction of zirconium elements significantly enhanced the pore volume and porosity, while reducing the thermal conductivity of the aerogels. The phase transformation at high temperatures inhibited the graphitization process of free carbon and the growth of SiC grains.
Article
Materials Science, Ceramics
Nan Zhang, Zengqian Liu, Yuanbo Du, Qin Yu, Shaogang Wang, Guoqi Tan, Bailing Jiang, Zhefeng Zhang, Robert O. Ritchie
Summary: This study presents a facile approach for fabricating oriented macro-porous ceramic materials by employing natural graphite flakes and accumulative rolling technique. The resulting materials exhibit a good combination of properties with high compressive strength and low thermal conductivity, which can be controlled by adjusting the additive amounts of graphite flakes.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Kede Wu, Qi Zhou, Junxiang Cao, Zhen Qian, Bo Niu, Donghui Long
Summary: Silica-modified carbon aerogels (SCAs) with high strength and good thermal properties were prepared using a facile method. The SCAs possess a mesoporous structure and exhibit high compressive strength and thermal conductivity, making them promising for high-temperature insulation under harsh conditions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Yuting Wang, Chengyi Chu, Chenqi Duan, Jiajing Dong, Hao Chen, Songtao Ying, Jianjun Guo, Gaojie Xu, Fang Hu, Yuchuan Cheng, Aihua Sun
Summary: In this study, SiO2 aerogels were fabricated using 3D printing technology, and opacifiers were added to reduce thermal conductivity. The printed SiO2 aerogel had a low thermal conductivity of 0.028 W/(m center dot K) at room temperature. The aerogel doped with 10 wt% SiC exhibited the best thermal insulation at medium-high temperatures. The 3D printed aerogel doped with 10 wt% SiC had a compression performance of 1.19 MPa, more than 10 times better than usual aerogels. This paper provides a method for creating micro-objects and complex-shaped objects with excellent medium-high temperature thermal insulation using Direct Ink Writing (DIW).
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Polymer Science
Baolu Shi, Long Xie, Bin Ma, Zhiliang Zhou, Baosheng Xu, Lijie Qu
Summary: SiO2 aerogels with unique structural characteristics and good optical transparency have the potential to be used in aerogel glass for thermal insulation.
Article
Chemistry, Physical
Kede Wu, Junxiang Cao, Zhen Qian, Yi Luo, Bo Niu, Yayun Zhang, Donghui Long
Summary: In this study, large-sized monolithic carbon aerogels with excellent properties were fabricated using a simple method. The carbon aerogels exhibited low density, high strength, low thermal conductivity, and high adsorption capacity, showing great potential in high-temperature insulation and organics absorption.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yan Sun, Youlu Chu, Chao Deng, Huining Xiao, Weibing Wu
Summary: A composite aerogel with high mechanical property and excellent anti-fouling performance was developed using directional freezing and chemical vapor deposition. It has an anisotropic structure with high axial Young's modulus and low radial thermal conductivity. The aerogel also has a high limiting oxygen index and increased contact angles to water and various oils after CVD treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Materials Science, Ceramics
Nathaniel S. Olson, Frances I. Hurwitz, Haiquan Guo, Nathan J. Madden, Jamesa L. Stokes, Richard B. Rogers, Jessica A. Krogstad
Summary: Investigating doped metal oxide systems can lead to stabilization of porous structures at high temperatures, improving thermal stability. Increasing yttria content can enhance the thermal stability of aerogels by reducing densification, suppressing crystallite growth, and maintaining the mesoporous structure up to 1200 degrees Celsius.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Shubin Fu, Dizhou Liu, Yuanpeng Deng, Jingran Guo, Han Zhao, Jian Zhou, Pengyu Zhang, Hongxuan Yu, Shixuan Dang, Jianing Zhang, Hui Li, Xiang Xu
Summary: In this study, carbonaceous ceramic nanofibrous aerogels with amorphous carbon embedded in yttrium-stabilized zircon nanofibers were designed and synthesized to achieve high-temperature thermal superinsulating performance and robust thermomechanical stability.
Article
Chemistry, Multidisciplinary
Haixia Yang, Haokun Li, Feng Ye
Summary: This study presents a new method of controlling the microstructure and properties of carbon aerogels through vacuum impregnation. The enhanced carbon aerogels exhibit uniform pore size distribution, high compressive strength, and low thermal conductivity.
Article
Chemistry, Multidisciplinary
Satoru Takeshita, Takumi Ono
Summary: A new type of transparent aerogels with biopolymer-polysiloxane double networks is introduced. The drawbacks of strong hydrophilicity and difficulty in achieving homogeneous nanoscale structures in biopolymer aerogels are overcome by incorporating a polysiloxane network. The resulting alginate-polymethylsilsesquioxane aerogel exhibits high optical transparency, water repellency, superinsulation properties, and improved flexibility, making it a promising material for various applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Multidisciplinary
Huilong Shao, Shuang Zhao, Zhifang Fei, Xiaohua Li, Zhen Zhang, Kunfeng Li, Jun Chen, Peng Zhang, Zichun Yang
Summary: Developing integrated thermal insulation and noise reduction materials is of great significance for energy saving and pollution control. This study presents a confined reinforcing strategy for organic-inorganic composite aerogels, which achieves high strength and excellent acoustic insulation properties.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Qi Ma, Hongyang Wang, Guozhu Zhan, Xiaoyun Liu, Yunhe Yang, Qixin Zhuang, Jun Qian
Summary: Polybenzoxazole (PBO) aerogels have excellent thermal and chemical stability, good fire resistance, and electronic transmission. A new strategy to prepare cross-linked PBO (cPBO) aerogels through polybenzoxazine has been reported in this paper, producing aerogels with low thermal conductivity, excellent mechanical properties, and low dielectric properties. This method is simple, efficient, and has a promising application prospect.
ACS APPLIED POLYMER MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Sandeep Ahankari, Pradyumn Paliwal, Aditya Subhedar, Hanieh Kargarzadeh
Summary: Naturally derived nanocellulose (NC) is a renewable and biodegradable nanomaterial with high strength, low density, and tunable surface chemistry, allowing controlled interactions with other polymers and nanomaterials. NC aerogels have gained attention due to environmental concerns, and recent developments have focused on their applications in thermal fields such as electronics, apparel, and smart building materials with properties categorized as thermally insulated, thermally conductive, and flame-retardant.
Article
Chemistry, Multidisciplinary
Zhexin Tang, Tongtong Shang, Han Xu, Ting Lin, Ang Gao, Weiguang Lin, Xinyan Li, Shiyu Wang, Botao Yu, Fanqi Meng, Qinghua Zhang, Xuefeng Wang, Dong Su, Qingbo Meng, Lijun Wu, Lin Gu, Ce-Wen Nan
Summary: The physical properties of materials are determined by the valence electron configurations, and different valence shells lead to different phenomena. In this study, we examined the valence electron density and orbital population of Sc2+ in the compound ScS using quantitative convergent-beam electron diffraction. Our results show that the 4s orbital is occupied by Sc2+, which is unexpected as it is usually the 3d orbital that is occupied in transition metal atoms. This finding reveals a unique electron configuration in a transition metal compound and suggests potential ways to modulate material properties by controlling electron orbitals.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Xiao Zhang, Xiaoyun Li, Suting Weng, Siyuan Wu, Qiuyan Liu, Mengyan Cao, Yejing Li, Zhenyu Wang, Lingyun Zhu, Ruijuan Xiao, Dong Su, Xiqian Yu, Hong Li, Liquan Chen, Zhaoxiang Wang, Xuefeng Wang
Summary: The problems of humidity sensitivity and instability to high-voltage oxide cathodes in sulfide electrolytes are solved by constructing a Li2CO3 interface, leading to enhanced electrochemical performance of all-solid-state batteries.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Xing Li, Shaobo Cheng, Yanghua He, Lixiang Qian, Dmitri Zakharov, Gang Wu, Chongxin Shan, Liang Zhang, Dong Su
Summary: This study investigates the formation dynamics and segregation behaviors of Pt-Co alloyed nanoparticles during thermal treatment through in-situ environmental transmission electron microscopy. The research uncovers the complex alloying processes and surface faceting phenomena under oxidation environment, providing fundamental understanding for the design, synthesis, and durability of Pt-based nanocatalysts.
Article
Chemistry, Multidisciplinary
Kai Feng, Zhengtao Xu, Yuhan Wang, Xiyao Wu, Fucheng Xiong, Yiling Ruan, Xiaojing Wu, Linqian Ye, Dong Su, Jing Yu, Xiaolian Sun
Summary: In this study, we developed 14 nm porous hollow copper iron oxide nanoparticles (PHCuFeNPs) as a cisplatin carrier and photothermal therapeutic agent. The PHCuFeNPs showed enhanced chemodynamic therapy and accelerated cisplatin release in a weak acidic tumor microenvironment. Under laser irradiation, the PHCuFeNPs exhibited a synergistic therapy effect. Furthermore, they induced immunogenic cell death and had potential for immunotherapy.
Article
Green & Sustainable Science & Technology
Chongyin Yang, Jiale Xia, Chunyu Cui, Travis P. Pollard, Jenel Vatamanu, Antonio Faraone, Joseph A. Dura, Madhusudan Tyagi, Alex Kattan, Elijah Thimsen, Jijian Xu, Wentao Song, Enyuan Hu, Xiao Ji, Singyuk Hou, Xiyue Zhang, Michael S. S. Ding, Sooyeon Hwang, Dong Su, Yang Ren, Xiao-Qing Yang, Howard Wang, Oleg Borodin, Chunsheng Wang
Summary: The global electrification of transportation and the increasing demand for grid energy storage are driving the growth of batteries worldwide. However, the supply chain of Li-ion batteries is facing challenges in sourcing essential and scarce materials. Therefore, there is a growing incentive to develop more sustainable battery chemistries.
NATURE SUSTAINABILITY
(2023)
Article
Chemistry, Multidisciplinary
Xinyan Li, Hai Zhong, Ting Lin, Fanqi Meng, Ang Gao, Zhuohui Liu, Dong Su, Kuijuan Jin, Chen Ge, Qinghua Zhang, Lin Gu
Summary: In this work, the researchers used low-dose integrated differential phase-contrast scanning transmission electron microscopy (iDPC-STEM) to directly observe the oxygen shifting and polar-nonpolar phase transitions in freestanding ZrO2 thin films. They clarified bidirectional transitions between antiferroelectric and ferroelectric orders and explained the mechanism of interfacial polarization relaxation at the unit-cell scale. The polarization switching was found to be strongly correlated with Zr-O displacement and two-step tetrahedral-to-orthorhombic phase transition.
ADVANCED MATERIALS
(2023)
Article
Construction & Building Technology
Tong Qiu, Dong Su, Xiangsheng Chen, Kunyang Chen, Jun Shen, Lei Wang, Zhenji Zheng
Summary: This study developed an assembled joints mechanical assessment model to solve the multi-parameter problems of assembled joints. The model fitted well with the experimental data and demonstrated the potential for joint design and deformation control, providing practical value for urban green low-carbon construction.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Jing Li, Haocheng Xiong, Xiaozhi Liu, Donghuan Wu, Dong Su, Bingjun Xu, Qi Lu
Summary: The authors demonstrate a Cu-based catalyst with Cu-Ag interfacial sites that promotes the production of oxygenate in CO2 electroreduction, resulting in near 80% selectivity for multi-carbon liquid products. This catalyst exhibits high Faradaic efficiencies for C2+ liquid products in CO electroreduction at commercially relevant current densities, and the performance is retained over 100 hours. The lower affinities of the Cu-Ag interfacial sites for carbon and oxygen are proposed to be responsible for the enhanced selectivity, which is supported by experimental evidence.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Juntao Zhang, Xiaozhi Liu, Yujin Ji, Xuerui Liu, Dong Su, Zhongbin Zhuang, Yu-Chung Chang, Chih-Wen Pao, Qi Shao, Zhiwei Hu, Xiaoqing Huang
Summary: This study reports the synthesis of free-standing RhMo nanosheets with atomic thickness and a unique core/shell structure. The polymorphic interface between the core and shell regions stabilizes and activates the metastable phase catalysts, resulting in excellent hydrogen oxidation activity and stability.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Mu-Yao Qi, Si-Dong Zhang, Sijie Guo, Peng-Xiang Ji, Jian-Jun Mao, Ting-Ting Wu, Si-Qi Lu, Xing Zhang, Shu-Guang Chen, Dong Su, Guan-Hua Chen, An-Min Cao
Summary: In this study, surface modulation was used to stabilize the Ni-rich layered cathode and improve its cycle stability and rate capability. A wet-chemistry process was developed to deposit uniform ZrO(OH)(2) nanoshells and Li2ZrO3 nanoparticles on the surface of Ni0.905Co0.095(OH)(2)(NC0.9-OH) hydroxide precursors. This surface control technique achieved an optimized balance between surface stabilization and charge transfer, resulting in exceptional capacity retention and rate capability.
Article
Chemistry, Multidisciplinary
Jiantao Li, Guangwu Hu, Ruohan Yu, Xiaobin Liao, Kangning Zhao, Tianyi Li, Jiexin Zhu, Qiang Chen, Dong Su, Yang Ren, Khalil Amine, Liqiang Mai, Liang Zhou, Jun Lu
Summary: The integration of Si into TiO2 enhances charge transfer and increases lithium-ion storage capacity.
Article
Environmental Sciences
Yingxin Zhao, Arif Hussain, Yinuo Liu, Zhengwu Yang, Tianyang Zhao, Bibek Bamanu, Dong Su
Summary: Electrospinning micro-nanofibers are gaining popularity in the medical field due to their exceptional physicochemical properties and biocompatibility, making them ideal for use as microbial immobilized carriers in wastewater treatment. This study immobilized aerobic denitrifying bacteria on micro-nanofibers made from different concentrations of polyacrylonitrile (PAN) solution. The results showed that 15% PAN micro-nanofibers with a tighter surface structure were not suitable as microbial carriers, while 12% PAN micro-nanofibers demonstrated higher cell density and total protein, making them the optimal choice for aerobic denitrification.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Chemical
Dong Su, Junkui Miao, Xiaofang Liu, Xixi Wang, Yuan Yu, Kailiang Leng, Yueqin Yu
Summary: The study aims to efficiently separate and concentrate glycerides and phospholipids rich in omega-3 unsaturated fatty acids from Antarctic krill using ethanol, water, and n-hexane. The optimal solvent ratio was determined to be xH2O : xC2H5OH : xC6H14 = 2: 5: 3, and the ideal hydration temperature was found to be 40 degrees C. Under these conditions, two products were obtained, N-H and E-W, with N-H being mainly composed of glycerides (89.8 %) and rich in astaxanthin (292.3 mg/kg), while E-W mainly consisted of phospholipids (92.4 %) and was also rich in EPA and DHA (37.9 % and 11.9 %, respectively). This study provides a theoretical basis and technical guidance for the development of new products of Antarctic krill.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xinyan Li, Ang Gao, Qinghua Zhang, Hao Yu, Pengxiang Ji, Dongdong Xiao, Xuefeng Wang, Dong Su, Xiaohui Rong, Xiqian Yu, Hong Li, Yong-Sheng Hu, Lin Gu
Summary: The correlation between cationic ordering transition and OR degradation in P3-Na0.6Li0.2Mn0.8O2 is revealed through in situ structural analysis. Suppressing the in-plane cationic ordering transition can improve the OR capacity by approximately twofold. First-principles calculations show that the charge ordering and alignment of the degenerate e(g) orbital induce lattice-level collective Jahn-Teller distortion, promoting intralayer Mn-ion migration and accelerating OR degradation.
Article
Chemistry, Physical
Suting Weng, Siyuan Wu, Zepeng Liu, Gaojing Yang, Xiaozhi Liu, Xiao Zhang, Chu Zhang, Qiuyan Liu, Yao Huang, Yejing Li, Mehmet N. Ates, Dong Su, Lin Gu, Hong Li, Liquan Chen, Ruijuan Xiao, Zhaoxiang Wang, Xuefeng Wang
Summary: In this study, the staging structure and evolution of lithium-intercalated graphite were revealed at the nanoscale using cryogenic-transmission electron microscopy and other methods. The intercalated lithium ions were found to distribute unevenly, leading to local stress and dislocations in the graphite structure. Each staging compound exhibited macroscopic order but microscopic inhomogeneity, revealing a localized-domains structural model.
