Article
Green & Sustainable Science & Technology
Rumana Hossain, Veena Sahajwalla
Summary: This study proposes the transformation of complex waste into valuable products through molecular recycling, specifically producing high-value silicon carbide nanowires. The method offers a cost-effective and sustainable solution for waste management, with superior photocatalytic properties compared to commercially available nanoparticles.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Construction & Building Technology
Li Pang Wang, Pin Wei Tseng, Kai Jyun Huang, Yan Jhang Chen
Summary: This study created foam glass from waste bottle glass by using silicon cutting waste as the foaming agent, and investigated the influence of various parameters. The results showed that foam glass produced using silicon cutting waste had properties that meet the standards for thermal insulation materials.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Ceramics
Xiaolin Guo, Zhaoyang Zhang, Ailin Song, Pengfei Xing, Shuai Wang, Shengnan Jiang
Summary: This study demonstrates a sustainable method to produce SiC particles using organosilane waste, resulting in a maximum SiC purity of 88.4% and Si recovery of 95%. The effects of carbon content, time, and temperature on the purity and recovery of Si are examined through thermodynamic analysis and experimental exploration. This research provides a viable approach for the repurposing of sludge waste.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Chemical
Jingwei Li, Yinhe Lin, Fanmao Wang, Jian Shi, Jifei Sun, Boyuan Ban, Guicheng Liu, Jian Chen
Summary: This paper provides a literature overview of current technologies and research progress in the recovery and recycling of high purity silicon from silicon wastes in the PV industry, including the source and classification of Si wastes, techniques related to separation and recovery, applications of silicon waste, and assessment of Si recovery technologies. It shows great potential for further research in this field.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Xiaolin Guo, Hong Wang, Ning Fu, Pengfei Xing, Shuai Wang, Bowen Wu, Yanxin Zhuang
Summary: The study investigates the preparation of SiOC/SiC nanocomposites by pyrolysis of organosilane slurry residue. The comprehensive examination of the pyrolysis process reveals the chemical reactions and structural changes leading to the formation of SiC crystals. The results show the generation of SiOC matrix at an annealed temperature of 800 degrees C and the formation of SiC nanoparticles at 1300 degrees C.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Shynar Kultayeva, Young-Wook Kim, In-Hyuck Song
Summary: The study found that doping significantly affects the properties of porous SiC ceramics, with electrical resistivity strongly influenced by doping while thermal and mechanical properties primarily dependent on the necking area between grains. Results show that the electrical conductivity of porous SiC ceramics can be successfully tuned independently of the thermal conductivity through suitable doping.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Xinming Ren, Beiyue Ma, Fan Qian, Wengang Yang, Guoqi Liu, Yaran Zhang, Jingkun Yu, Qiang Zhu
Summary: This study investigated the feasibility of using silicon kerf waste for porous SiC ceramics and the effects of sintering atmospheres and additives on ceramic properties. The addition of feldspar and starch increased the porosity of the ceramics, with a series of high-quality porous SiC ceramics synthesized under a carbon embedded atmosphere.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Huifan Xiong, Weiwei Mao, Rong Wang, Shuai Liu, Naifu Zhang, Lihui Song, Deren Yang, Xiaodong Pi
Summary: This article reviews the characterization methods of single-crystal silicon carbide (SiC), including elemental analysis, electrical and optical methods. Specifically, elemental analysis introduces the secondary ion mass spectroscopy (SIMS) technique. Electrical methods discuss mature techniques used in the laboratory, such as the Hall effect method and electrical scanning probe techniques. Additionally, optical methods introduce the optical absorption method, Raman spectra analysis, and photoluminescence spectroscopy.
MATERIALS TODAY PHYSICS
(2022)
Article
Materials Science, Ceramics
R. Bystricky, M. Skratek, J. Rusnak, M. Precner, M. Tapajna, M. Hnatko, P. Sajgalik
Summary: Silicon carbide based composites with different weight percentages of Ti and NbC as sintering additives were prepared. The composites showed excellent electrical conductivity and complex magnetic properties. Samples with 30 and 40 wt % of Ti and NbC exhibited superconducting state below 2 K.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Lei Ye, Jia Zheng, Cong Guo, Yu Hu, Jian Yu, Xiaodong Zhu, Tao Chen
Summary: This study demonstrates that high deposition pressure can significantly impact the material properties of sputtered SiC thin films, altering the chemical bonding, composition, and opto-electrical properties. It shows that an increase in deposition pressure leads to a higher oxygen content and a change in the carbon phase, potentially meeting the application requirements for optoelectronic devices.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Shynar Kultayeva, Young-Wook Kim
Summary: This study investigated the effects of boron carbide (B4C) content and sintering atmosphere on the properties of porous silicon carbide (SiC) ceramics. It was found that the electrical resistivity was lower in the nitrogen-sintered samples, while the thermal conductivity and flexural strength were higher in the argon-sintered samples. The properties were also influenced by the B4C content.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Ankita Gupta, Yogesh P. Singh, Gregory N. Morscher
Summary: Two different potential drop techniques utilizing the four-point probe method were developed to detect the location of delamination defects in composite materials.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Construction & Building Technology
Natoli Abebe Tadesse, Jae-Suk Ryou, Kyu Tae Park, Joo Young Kim, Hong Gi Kim, Byeong-Hun Woo
Summary: This study investigates the influence of electric stress on the electrical, thermal, and phase composition properties of cement mortar with silicon carbide (SiC) as a conductive filler. The findings show that SiC specimens enhance the electrical conductivity of the cement mortar by 4.35% to over 50% compared to the control. However, as the curing progresses, the electrical resistance increases due to reduced ionic conduction and an increase in conduction through free electrons. SiC also significantly increases the surface temperature and thermal conductivity of the cement mortar, while hindering the hydration process and affecting the mechanical performance of the specimens.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Materials Science, Ceramics
Shynar Kultayeva, Young-Wook Kim, In-Hyuck Song
Summary: The study investigated the effects of BN content in porous SiC ceramics on their electrical, thermal, and mechanical properties in N2 and Ar atmospheres. It was found that the electrical resistivity was mainly controlled by the sintering atmosphere, while the thermal conductivity and flexural strength were more influenced by porosity and necking area changes between SiC grains.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Jianfeng Xiao, Jiuzhou Zhao, Guanjiang Liu, Mattew Thomas Cole, Shenghan Zhou, Ke Chen, Xinchuan Liu, Zhenjun Li, Chi Li, Qing Dai
Summary: The study successfully demonstrates the fabrication of well-aligned, vertically orientated SiC nanoarrays using reactive ion etching. The resulting nanoarrays exhibit high geometry uniformity and excellent field emission performance, showing potential for various vacuum electronics applications.
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)