CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Qikui Man,Xueheng Zhuang,Zhenkuang Lei,Shiqi Zhu,Lining Pan,Yu Gao,Guoguo Tan
For obtaining the ecofriendly microwave absorbing composites, flake carbonyl iron was mixed to the flotation carbon waste of titanium slag by ball-milling processes. The composites of 4 h ball-milling present excellent microwave absorbing performance of minimum reflected loss (RL) of −54.9 dB at 7.8 GHz with thickness of 2.6 mm. The same composites provide the performance of RL < −10 dB with the thickness from 1.2 mm to 5 mm at corresponding matching frequency from 3.3 GHz to 18 GHz. It means that the absorbing peak can be tunable at the wide frequency range with only adjusting the thickness. The strong absorbing intensity and wide tunable frequency range are attributed to the proper impedance matching of dielectric property from flotation carbon waste of titanium slag and magnetic property from carbonyl iron. Also, this work provides a research approach for handling industrial waste which contains carbon.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Naiyu Wang,Jiebing Ai,Xiaotong Feng,Zhaowei Qu,Wei He,Xiaoqin Ma,Qiaosheng Pu
Combination of pyrolysis and microwave plasma treatment was utilized to prepare porous carbon materials using an industrial tar waste as the precursor. The results show that the treatment with microwave plasma can significantly enhance the specific surface area and pore volume of carbon prepared through pyrolysis. The specific surface area increased by 14.8 % (2419.6 m 2 g −1 to 2778.8 m 2 g −1 ) and the pore volume increased by 23.5 % (1.15 cm 3 g −1 to 1.42 cm 3 g −1 ) through only 1.5 min treatment with 1060 W of microwave plasma. The waste-derived porous carbon could be used as the electrode material of the supercapacitor and the specific capacitance enhanced by 67.9 % (178.4 F g −1 to 299.6 F g −1 at 1 A g −1 ) by the plasma treatment. The specific capacitance of the plasma treated carbon remained nearly same after 12,000 cycles of charging and discharging. In addition, due to its unique structure, the plasma treated carbon could completely eliminate methylene blue within 6 h without the use of other chemical activators, indicating its capability of waste water treatment. The work illustrates the potential of microwave plasma for activating the surface of porous carbon and provides a way to convert industrial wastes to high value materials.
研究领域:
材料科学
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环境科学
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能源技术
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Kaijia Wang,Ziwu Liu,Shiheng Mu,Huanqiang Shi,Mengmeng Zhou,Chao Yuan,Shijian Lu,Zhonghai Ni,Guoliang Tian
As a remarkable alternative anode to commercial graphite for the next-generation high-performance lithium-ion batteries (LIBs), silicon (Si) has attracted tremendous attention due to its high specific capacity. However, the enormous volume expansions/contractions during the charge/discharge limited its practical application in LIBs greatly. To solve these issues, herein, we fabricated a low-cost FeSi intermetallic compound (FeSi 2 ) by the ball milling with photovoltaic industrial waste micron-sized Si and Fe powders as raw materials and encapsulated it by N, S, O-doped mesoporous carbon with polyvinylpyrrolidone as C, N, O precursor and (NH 4 ) 2 SO 4 as template and pore-introducing agent. Owing to the presence of FeSi 2 , abundant meso-pores for mitigating Si and FeSi 2 expansion and the N, S, O-doped mesoporous carbon for facilitating lithium-ion transport and electron conduction, one as-prepared FeSi 2 /N, S, O-doped mesoporous carbon composite anode (FeSiA 1 @C) showed a high specific capacity of 401.7 mAh g −1 even at 1.0 A g −1 after 1600 cycles. More impressively, the assembled LiFePO 4 || 20 % FeSiA 1 @C/80 % commercial graphite full cell presented a high energy density of ca. 312.0 Wh kg −1 and a capacity retention of ca. 80 % after 500 cycles, demonstrating a promising practical applicability of FeSiA 1 @C anode, and showing a new way for the high-value utilization of industrial waste micron-sized Si for LIBs.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Fu Yang,Li-an Xing,Kwame Nana Opoku,Hongyao Zhao,Zhenxiao Wang,Ruiting Ni,Qiang Gao,Zengjing Guo,Feng Zeng,Aihua Yuan,Jianming Pan
The utilization of ambient low-pressure CO 2 adsorption for carbon neutrality initiatives holds great potential. However, conventional liquid amine absorption methods for CO 2 capture are plagued by high energy consumption and equipment corrosion issues. In this study, we present a novel approach using industrial waste silica fume (SF) as a precursor and tetraethylenepentamine (TEPA) as a chemical modifying agent to efficiently synthesize low-cost mesoporous solid amine adsorbents within the waste-derived mesoporous powder sorbents (MPS) series. Employing the static adsorption technique, the impact of both adsorption temperature and amine loading on the CO 2 adsorption efficacy was comprehensively investigated. The optimized sample, MPS-TEPA-30, demonstrated a superior CO 2 adsorption capacity, achieving 2.22 mmol g −1 at 323 K and 1 bar, a significant 6.8-fold increase compared to the unmodified MPS material (0.326 mmol g −1 ). Additionally, MPS-TEPA-30 demonstrated notable performance advantages, surpassing SBA15-TEPA-30 and MCM41-TEPA-30 with near 1.49- and 2.12-fold increases in adsorption capacity, respectively. Impressively, MPS-TEPA-30 exhibited remarkable adsorption ability beyond 1.5 mmol g −1 at ultralow pressures (<0.01 bar), suggesting its potential for ambient ultralow-pressure CO 2 capture. Moreover, MPS-TEPA-30 showed exceptional stability over multiple adsorption–desorption cycles, with only a marginal 6 % decrease in CO 2 capture efficiency after the seventh cycle. Thermogravimetric analysis confirmed the robust thermal stability of the amine-functionalized adsorbent (∼473 K), rendering it suitable for high-temperature adsorption–desorption processes. The Ideal Adsorbed Solution Theory (IAST) equation predicted an excellent adsorption selectivity of 1600 for the CO 2 /N 2 (1:1) mixture at 323 K and 10 mbar, underscoring the promising prospects of MPS-TEPA-30 in CO 2 capture and selective separation applications from ambient condition.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Waste and Biomass Valorization
·
2022
·Vol. 14
·期 7
·2419-2432
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IF 3.449
Guo Dong,Liu Hantao,Zhang Yaohui,Wang Yingchun,Xiong Yaxuan
Massive accumulation of solid waste semi-coke ash (SCA) produced in industrial processes will damage local environment. To recycle SCA and fabricate low-cost thermal energy storage materials, the idea of fabricating the form-stable phase change materials (FSPCMs) with SCA as skeleton material and solar salt (SS) as phase change material was proposed innovatively. Seven FSPCMs with different SS content were prepared by compression and sintering method, and key performances were investigated by differential scanning calorimetry, constant-speed pressurization method, scanning electron microscopy, sessile drop method and X-ray diffraction. The research found that the sample A55 with 50 wt% SS showed the best performance; the thermal energy storage density of sample A55 was 483 J/g in the range of 100 to 450 °C; the compressive strength of sample A55 reached 86.12 MPa; the sample A55 had excellent chemical compatibility and thermal stability.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
BMC Research Notes
·
2025
·Vol. 18
·期 1
·1-11
·
IF 1.7
Hammal Abdulrazzaq
The importance of geopolymeric materials has increased in recent years due to their high effectiveness in water treatment by multiple techniques such as adsorption and filtration. Therefore, research has increased related to the preparation of geopolymers from different raw materials. In this research geopolymeric membranes were prepared from Syrian clay by calcinted it at 600˚C for 120 min, then it was mixed with an activated alkaline solution (NaOH + Na 2 SiO 3 : SiO 2 /Na 2 O = 1.3). The effect of adding quantities of chamotte waste, ceramics waste, and glass waste on the properties of the geopolymeric membrane was studied. The porosity decreased significantly due to waste additions, the decrease in porosity led to a decrease in water flow, while the compressive strength of the membranes increased with the effect of waste addition. The prepared membranes were used to remove organic pollutants from pharmaceutical wastewater in two stages, the first stage was absorbed by the prepared membrane powder, and the second stage was filtration by the prepared membrane. The tests showed good efficiency in removing organic pollutants, and the results of the bacteriological tests indicated good effectiveness of the prepared membranes in removing bacterial contamination from the treated water sample. Graphical
研究领域:
材料科学
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环境工程
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水处理技术
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Jian Feng,Meng Xie,Derong Xu,Zhenzhen Tang,Chunlin He,Shunyan Ning,Min Li,Guoyuan Yuan,Songshan Jiang
Separation and recovery of palladium from industrial waste is an environmental way to utilize the valuable secondary resources. Metal-organic framework (MOF) has a great potential for the adsorption of Pd(Ⅱ) from aqueous solutions, but the tiny powder form of MOF restricts its practical applications. In this work, a feasible and green method is developed to prepare novel MOF composite beads (B-MOF) with a stable cross-linked network. The adsorption performance of B-MOF for Pd(Ⅱ) was evaluated in acidic solutions. Comprehensive characterization results show that the structure of B-MOF is stable throughout the adsorption process. At pH 3.0, the adsorption capacity of Pd(Ⅱ) on B-MOF was high up to 334.68 mg.g −1 , exhibiting superiority to most of the other congeneric adsorbents. The adsorption behavior accorded with the pseudo-second-order kinetic model and the Langmuir adsorption isotherm, which was a spontaneous and endothermic chemisorption process. Moreover, the adsorption performance of B-MOF persisted almost unchanged even after 12 regeneration cycles. B-MOF also demonstrated high selectivity to Pd(Ⅱ) in the presence of interfering ions, including Na(Ⅰ), K(Ⅰ), Ni(Ⅱ), Mg(Ⅱ), Cu(Ⅱ), Zn(Ⅱ), Co(Ⅱ), Ca(Ⅱ) and Al(III). Mechanism studies reveal that Pd(Ⅱ) can be adsorbed on B-MOF by the inner-sphere complexation to Zr-nodes and the electrostatic attraction with protonated amine groups. The recovery of Pd from a real industrial waste was successfully achieved with a recovery rate of 92.5 %. This study provides an effective method to improve the practicability of MOF-based materials and may open a new way for the disposal of industrial waste containing palladium.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2022
·
IF 5.876
Yi Chen,Shuai Dong,Shiyue Wei,Shiruo Zhang,Jiaxin Zhang,Jinchuan Gu
Mesoporous sodalite (SOD) zeolite was fabricated from industrial waste lithium silica fume (LSF) through the reactive oxygen species (ROS) method under ultraviolet (UV) irradiation without the template. Persulfate (PS) and peroxymonosulfate (PMS) under UV irradiation would further induce ROS generation and result in faster crystallization to obtain highly crystalline and abundant mesopores (mesopore volume, Vmes＞0.34 cm³/g) SOD within 2 h. The ROS produced in the synthesis system were detected by electron spin resonance (EPR), and the results revealed that ·OH, O 2 · − , 1 O 2, and SO 4 · − may be related to the accelerating process. Zeolite produced superior adsorptive capacity (112.4 mg/g) and reusability in copper ion (Cu(II)) adsorptive experiments. The abundance of mesoporous in zeolite facilitates the removal of Cu(II) by ion exchange and hydroxyl complexation. This work opens up a new route for green and fast synthesis of zeolite and highly efficient Cu(II) removal adsorbent.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）