JOURNAL OF HAZARDOUS MATERIALS
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2020
·
IF 9.038
Yun Guo,Hong-Yi Li,Shuo Shen,Jie Cheng,Jiang Diao,Bing Xie
Chromium sludge is a hazardous solid waste which cannot be effectively treated but only piled up and abandoned, causing serious environment pollution and resource wasting. This work proposes an effective novel process to separately recover all resources in chromium sludge via a sustainable way. The obtained acid solving liquid from chromium sludge is desiliconized by cationic flocculant (PCAM) to induce coprecipitation of polysilicate gel and PCAM , which mixture is calcinated to generate the product of white carbon black in purity of 94.35% with a recovery of 92.58%. After desiliconization, V in the solving liquid is selectively extracted by microemulsion (ME), which is recovered as V 2 O 5 in purity of 99.34% with a recovery of 95.53% by the subsequent procedure of stripping-precipitation-calcination. The Fe 3+ in raffinate is reduced to Fe 2+ cations by Na 2 SO 3 , and is then recovered by H 2 C 2 O 4 precipitation to generate the FeC 2 O 4 product in purity of 99.12% with a recovery of 98.25%. Cr 3+ cations in residual solution are recovered by alkaline precipitation and calcination to generate the Cr 2 O 3 product in purity of 98.25% with a recovery of 92.68%. This work provides fresh penetrations into the synchronous detoxification, resource recovery and value-added utilization of hazardous industrial solid wastes.
研究领域:
环境科学
·
材料科学
·
化学工程
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DOI
PubMed
高影响因子
Science China-Technological Sciences
·
2022
·Vol. 65
·期 10
·2337-2347
·
IF 3.903
Hou ShengPing,Zhang Da,Xie ZhiPeng,Kang Yao,Tang ZhengGang,Dai YongNian,Lei Yong,Chen Jian,Liang Feng
As the quantity of waste tires increases, more pyrolysis carbon black (CBp), a type of low value-added carbon black, is being produced. However, the application of CBp has been limited. Therefore, it is necessary to identify and expand applications of CBp. This work focuses on the preparation of activated carbon (AC) from CBp using the physicochemical activation of carbon dioxide (CO 2 ) and potassium hydroxide (KOH). Thereafter, AC is applied to the electrode of the electrical double-layer capacitor (EDLC). The AC prepared by CO 2 /KOH activation exhibited a hierarchical pore structure. The specific surface area increased from 415 to 733 m 2 g −1 , and in combination with low ash content of 1.51%, ensured abundant ion diffusion channels and active sites to store charge. The EDLC comprising the AC (AC-2) electrode prepared by excitation of CO 2 (300 sccm) and KOH had a reasonable gravimetric specific capacitance of 192 F g −1 at 0.5 A g −1 , and exhibited a good rate capability of 73% at 50 A g −1 in a three-electrode system. Moreover, the EDLC device comprising the AC-2 electrode delivered excellent cycling stability (capacitance retention of 106% after 10000 cycles at 2 A g −1 in a two-electrode system). Furthermore, a symmetric supercapacitor based on an AC electrode that exhibits a supreme energy density of 4.7 Wh kg −1 and a maximum power density of 6362.6 W kg −1 is demonstrated.
研究领域:
材料科学
·
环境科学
·
能源工程
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产品关联
DOI
高影响因子
MATERIALS TECHNOLOGY
·
2014
·
IF 0.746
D. Zhang,B. Zhang,X. N. Tang,Y. P. He,G. C. Gao,P. Jiang
A new inorganic antibacterial material was synthesised by the sol–gel method using copper ion as antibacterial ion, holmium nitrate as additive and white carbon black as carrier. The structure and properties of the inorganic antibacterial material were characterised by inductively coupled plasma atomic emission spectroscopy, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM) techniques, energy dispersive spectrum (EDS) analysis, X-ray diffraction (XRD) and antibacterial experiments (Escherichia coli as experimental bacteria). The result showed that the bacteriostasis rate of this new material was higher than that of the general Cu antibacterial white carbon black (without containing holmium); the bacteriostasis rate was over 90%. The form of the inorganic antibacterial material was investigated by XRD. The difference between the new inorganic antibacterial material and white carbon black was studied by FT-IR. Scanning electron microscopy and EDS were used to detect the holmium ion in the material.
研究领域:
材料科学
·
微生物学
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DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2013
·Vol. 20
·期 6
·1-7
·
IF 2.019
Wu Xueli,Qiu Jianhui,Liu Peng,Sakai Eiichi,Lei Lin
DENKA BLACK/polystyrene nanocomposites (DB/PS) were successfully prepared through a facile strategy. Some of the styrene molecules were grafted and polymerized onto the surface of the DB via the in situ free radical addition process in ionic liquid, and others self-polymerized and coated on the polystyrene grafted DB. The ionic liquid improves the grafting percentage because of its high viscosity. The electrical properties of polymer composites before and after the grafting were measured. It was found that the electrical conductivity of the DB/PS composites decreased with increasing amounts of monomer styrene and initiator 2, 2′-azobis (isobutyronitrile) (AIBN). The microstructure, morphology and thermal properties of the composites were characterized by Fourier transform-infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy. The results proved that the polystyrene had been successfully grafted onto the DB surface.
研究领域:
高分子化学
·
纳米复合材料
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功能材料
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电学性能
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材料科学
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Yulu Zhang,Jiping Jia,Nanxin Chang,Yuzeng Zhao,Xinjing Meng,Honghua Ge
The development of cheap and efficient catalysts for persulfate activation in advanced oxidation processes based on persulfate is important and promising in the wastewater treatment field. Herein, conductive carbon black loaded CuFe 2 O 4 (CCB-CuFe 2 O 4 ) had been prepared via a sol-gel method and was used as a catalyst to activate persulfate for the removal of phenol in water. The CCB-CuFe 2 O 4 was characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, Brunauer–Emmett–Teller, and Raman spectroscopy, which confirmed that CuFe 2 O 4 nucleated on the defect of CCB. The performance of the activation on persulfate was studied by determining the concentration of phenol and chemical oxygen demand of the water. The activity of the catalyst is the highest when the content of CuFe 2 O 4 in the catalyst is 10%. The removal rate of 100 mg/L phenol reached 100% in 30 min under the optimized operation condition, which was 2.0 g/L CCB-CuFe 2 O 4 , 2.0 mmol/L persulfate (PS) and pH = 11. The factors of effect on the catalysis performance were discussed. CCB-CuFe 2 O 4 can be used in the pH range of 3~11 and the presence of HCO 3 – can promote phenol degradation rate. The use of CCB-CuFe 2 O 4 catalyst obviously reduced the dose of PS in the process of phenol oxidation degradation. Furtherly, quenching experiments verified that the most important reactive species in the CCB-CuFe 2 O 4 /PS/phenol system is singlet oxygen ( 1 O 2 ).
研究领域:
环境科学
·
催化化学
·
水处理技术
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Kunpeng Song,Guanghui Li,Junchen Yu,Tianyue Zheng,Jingyu Wang
Efficient methods for preparing carbon nanotube (CNT)-confined metal catalysts are of great significance for electrocatalysis. Hence, in this study, Fe and Co promoters were added to the precursors of commercial carbon black and melamine to form N -doped CNTs confined bimetallic catalysts (FeCo@ N -CNTs) via in situ pyrolysis. The FeCo@ N -CNT catalysts exhibited a bamboo-like morphology with FeCo alloy nanoparticles encapsulated in the CNTs and high activity toward the oxygen reduction reaction, with a half-wave potential of 0.864 mV, higher than that of commercial Pt/C (0.827 mV) in alkaline solutions. The catalytic performance is attributable to the synergistic effects between the FeCo alloy and N -doped CNT structure. Moreover, the confinement of the FeCo nanoparticles inside the CNTs imparted the prepared catalysts with resistance to methanol poisoning and long-term stability. This versatile method of synthesizing CNTs directly from carbon black provides a new strategy for preparing high-performance non-precious-metal-based N -doped CNT catalysts for practical fuel cell applications.
研究领域:
材料科学
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电化学
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能源科学
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产品关联
DOI
PubMed
高影响因子
ECS Journal of Solid State Science and Technology
·
2019
·Vol. 8
·期 10
·N141
·
IF 1.795
Guangyue Shi,Yunpeng Qu,Guohua Fan,Yao Liu
The CNTs-CBs nano-units composed of carbon nanotubes (CNTs) and carbon black (CBs) have been prepared by electrostatic self-assembly. Herein, the CNTs-CBs/PS composites with different CNTs-CBs contents were prepared. The negative permittivity behavior was observed when three-dimensional conductive network was constructed by CNTs-CBs. Tunable and weakly negative permittivity originated from the low frequency plasmonic state which was collective electrons oscillation in CNTs-CBs network. The Jonscher's power law and Drude model were used to analyze the dielectric behavior and conductive mechanism changing. This work has broadened the applications of carbonaceous materials and polymers in the field of metamaterials.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
Coatings
·
2024
·Vol. 14
·期 9
·1082
·
IF 2.9
Qingpeng Li,Jiaxing Liu,Tiancheng Jiang,Xiaoyun An,Na Wang,Zhixiu Xu,Wanyuan Guo,Liang Zhang,Xiaofeng Liu
To improve the storage stability and conductivity of aluminum powder in an aqueous environment, the surface of aluminum powder was treated to form silica film by the sol–gel method, then was treated with conductive modification to introduce nanocarbon black particles so that conductive aluminum powder could be prepared to solve the application bottleneck of aluminum powder in water-borne heavy-duty anticorrosive coatings. The structure, surface morphology, and composition of the modified aluminum powder were characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray photoelectron spectroscopy (XPS), and X-ray powder diffraction (XRD). The corrosion resistance and electrochemical properties were measured using a hydrogen evolution test and an 2electrochemical test. The results showed that there was a compact SiO2film formed on the surface of the prepared conductive aluminum powder, and the conductive filler nanocarbon black was uniformly grafted on the surface. According to the hydrogen evolution test at 100 h/50 °C, conductive aluminum powder with 5 wt% carbon black exhibited the best hydrogen evolution effect, with a hydrogen evolution amount of only 0.5 mL. The prepared conductive aluminum powder was applied to the water-borne coatings, and the storage stability test, electrochemical polarization test, and neutral salt spray test were further conducted. The water-borne coatings prepared with conductive aluminum powder still showed good performance and had no reaction after 6 months of storage. Compared with the coating containing SiO2-modified aluminum powder, the coating exhibited better corrosion resistance.
研究领域:
材料科学
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腐蚀与防护
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表面工程
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产品关联
DOI
高影响因子
Polymers
·
2019
·Vol. 11
·期 3
·546
·
IF 3.164
Yanbin Wang,Huang Yu,Yongchao Li,Teng Wang,Tao Xu,Jinxing Chen,Zicheng Fan,Yufeng Wang,Biaobing Wang
Highly conductive thin films with suitable mechanical performances play a significant role in modern electronic industry. Herein, a series of ternary conductive polymer composites were fabricated by incorporating carbon black (CB) into binary conductive polymer composites of poly(amide-imide) (PAI) and polyaniline (PANI) to enhance their mechanical and conductive properties simultaneously. By varying the composition of PAI/PANI/CB ternary films, the conductivity enhanced by two orders of magnitude compared with the sum of PAI/PANI and PAI/CB binary conductive polymer composites, and a high conductivity of 1160 S m−1was achieved. The improved conductivity is mainly because much more continuous conductive networks were constructed in the ternary conductive polymer composites. With the help of the unusual morphology, the tensile strength was also enhanced by more than 80% from 21 to 38 MPa. The origin for the improved morphology was discussed for further improvement.Keywords:conductive polymer composite;ternary blend;poly(amide-imide);polyaniline;carbon black
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2017
·Vol. 98
·期 7
·2632-2641
·
IF 2.463
Junsheng Ding,Xiaomeng Wu,Xiaona Qi,Heng Guo,Anjun Liu,Wenhang Wang
BACKGROUND In this paper, two kinds of commonly used vegetable carbon black (VCB, 3000 mesh; nano) at 50 g kg −1 concentration (based on dried gelatin) were added to 48 g kg −1 of fish gelatin (GEL) solutions and their effects on mechanical, barrier and anti-photooxidation properties of GEL films were investigated. RESULTS From the SEM images, it was shown that compared with 3000 mesh VCB (1–2 μm), nano VCB (100–200 nm) made the microstructure of GEL film more compact and more gelatin chains were cross-linked by nano VCB. The addition of nano VCB significantly increased gelatin film strength with the greatest tensile strength of 52.589 MPa and stiffness with the highest Young's modulus of 968.874 MPa, but led to the reduction of film elongation. Also, the VCB presence significantly improved water vapour and oxygen barrier properties of GEL film. Importantly, nano VCB increased GEL film with better UV barrier property due to its stronger UV absorption nature when compared with micron VCB. This property could help in the preservation of oil samples in the photooxidation accelerated test. CONCLUSION With improved properties, the nano VCB-reinforced GEL film may have great potential for application in the edible packaging field, especially for the anti-photooxidation property. © 2017 Society of Chemical Industry
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2024
·
IF 10.8
Yuzhu Zhang,Laijin Zhong,Jing Zhan,Zhipeng Yin,Yao Pei,Dong Cao,Qian S. Liu,Qunfang Zhou,Qian Liu,Guibin Jiang
Atmospheric fine particulate matter (PM2.5) poses threats to the cardiovascular system. Red blood cells (RBCs) are the most abundant cells in blood, which are actively involved in multiple hematological diseases, such as blood clot formation and thrombosis. Exploring how PM2.5 with spatiotemporal heterogeneity influences the hematological system by targeting RBCs would help gain insights into the deleterious effects of PM2.5 and provide clues for finding the causative components therein. Herein, the PM2.5 samples collected from 3 urban sites in Beijing (i.e., Chaoyang, Shunyi, and Yanqing districts) during 4 seasons of 2022 were studied for their toxicities to mouse RBCs, and the main contributing components were further explored through chemical analysis and correlation measure. The results showed that exposure to PM2.5 samples decreased adenosine triphosphate (ATP) levels and increased phosphatidylserine (PS) externalization of RBCs, causing cell morphological deformity. The Pearson correlation analysis showed that the aromaticity of the dissolved organic matter (DOM) in PM2.5 samples was positively correlated with PS exposure of RBCs, showing that the lignin-like compounds were the potential contributors. The negative correlation of zeta potentials of PM2.5 samples with PS exposure of RBCs showed the particle-derived bioactivities of this airborne pollutant. The simulative test based on artificial nanomaterials of carbon black (CB) and oxidized CB (OCB) confirmed the crucial role of particulate carbon in PM2.5-induced effects on RBCs, and soot with a certain oxidation degree was, thus, recognized as another contributor, given its ubiquitous existence in PM2.5 samples. This study, for the first time, revealed PM2.5-induced PS exposure of RBCs, and the causative components of DOM and soot were unraveled. Considering the inevitable contact of airborne PM2.5 with RBCs in the blood circulatory system, the findings obtained herein would help bridge the gap between PM2.5 exposure and the risk of cardiovascular diseases, like thrombogenesis.
研究领域:
环境科学
·
毒理学
·
血液学
·
心血管疾病
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空气污染
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER COMPOSITES
·
2025
·
IF 4.7
Tiwen Xu,Shitao Li,Jianfeng Ban,Xiaoping Huang,Mingxian Liu,Qi Yao,Junqiu Liao
A synthetic biphenyl flexible liquid crystal polyurethane (FLCPU) is used in a methyl vinyl silicone rubber (VMQ)/conductive carbon black (CCB) composite via two decoration methods. CCB modified with moderate amounts of FLCPU under liquid way dispersion undergoes ammonia esterification in a rubber matrix, but the coating effect of PU on CCB leads to a decrease in the mechanical properties and electrical conductivity of the material. Conversely, CCB modified with 4 wt% FLCPU via solid mixing is well distributed in VMQ because of polar interactions, such as hydrogen bonding, which enhance the mechanical properties of the composite. In addition, the volume resistivity of the composite decreases by 41.7% compared with that of pure VMQ/CCB for improved filler distribution. Furthermore, the energy consumption decreases sharply by more than 60% in the liquid-crystal temperature transition range, assisted by the synergistic effect of the biphenyl-conjugated π electron clouds of FLCPU, which enhance the ability to move electrons. Thus, FLCPU could be an interfacial regulator of VMQ temperature sensors or smart materials potentially. Highlights FLCPU exhibited the liquid crystallinity around 70 ~ 130°C. FLCPU improved the distribution of CCB in the VMQ matrix significantly. Ammonia esterification and polar interactions existed in the matrix. Liquid crystal phase promoted the materials' electrical conductivity obviously. FLCPU endowed the material with the feature of thermal stimulus response.
研究领域:
材料科学
·
高分子化学
·
智能材料
✓ 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）