JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2022
·
IF 10.319
Jin-Bo Cheng,Hai-Bo Zhao,Ai-Ning Zhang,Yan-Qin Wang,Yu-Zhong Wang
Nowadays, a large amount of waste fabrics has brought huge environmental and resource problems, while the traditional recycling routes are downcycling with low efficiency and complex separation processes. Herein, we demonstrate a green and facile route to up-recycle waste fabrics (cotton-polyester blending or cotton fabrics) into a high-performance microwave absorber. In this design, an assistant coating was deposited onto the fiber surface of the waste fabric through the assembly of tannic acid-Fe 2+ (TA-Fe 2+ ), which effectively catalyzed the polymer fiber into highly graphitized porous carbon fiber at high temperatures. Meanwhile, the Fe nanoparticles from the reduction of Fe 2+ ions were evenly embedded on the surface of porous carbon fibers. Consequently, the resultant porous carbon/Fe composites with hierarchical microstructures displayed excellent microwave absorption performances. Typically, the microwave absorber from waste polyester-cotton blended fabric could reach a minimum reflection loss ( RL ) of -50.5 dB at a thin coating thickness of 1.7 mm, and the minimum RL from waste cotton fabric absorber reached -47.1 dB at a thickness of 2.5 mm. This work provides a new idea to convert waste fabrics into high value-added microwave absorbing materials in a simple and environmentally friendly way, which will help reuse resources and protect the environment.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2021
·Vol. 32
·期 2
·1941-1950
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IF 2.478
Chen Jiabing,Lu Youluan,Huang Leshu,Shi Zhen,Zheng Yin,Song Xinjian,Wu Chenyi,Wu Zaikun
The fouling and passivation of the electrodes tend to reduce the sensitivity and lifetime of the electrodes. In this work, the mesoporous carbon-doped La-TiO 2 modified electrode not only has a good detection signal for catechol and hydroquinone, but also can achieve the purpose of electrode regeneration under illumination. A series of porous carbon materials LTOF-T (La-Ti Organic Frameworks-Temperature, LTOF-T) were prepared by hydrothermal method and pyrolysis method using La(NO 3 ) 3 ⋅6H 2 O, p -tricarboxylic acid, citric acid monohydrate, and tetra- n -butyl titanate as raw materials. The materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N 2 adsorption–desorption, and Raman spectroscopy. The electrochemical behaviors of catechol (CA) and hydroquinone (HQ) on different electrodes were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Under the optimal conditions, HQ and CA concentrations were linear in the range of 0.4–20 μmol/L, and the detection limits were 0.039 μmol/L (HQ) and 0.034 μmol/L (CA) at the signal noise ratio of 3. The electrode can be regenerated under visible light irradiation within 60 min.
研究领域:
分析化学
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材料科学
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环境科学
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DOI
高影响因子
MOLECULES
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2023
·Vol. 28
·期 2
·819
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IF 4.6
Wenlin Zhang,Yuhong Zhao,Qinhong Liao,Zhexin Li,Dengwei Jue,Jianmin Tang
In this study, sweet-potato-vine-based porous carbon (SPVPC) was prepared using zinc chloride as an activating and pore-forming agent. The optimised SPVPC exhibited abundant porous structures with a high specific surface area of 1397.8 m2g−1. Moreover, SPVPC exhibited excellent adsorption characteristics for removing methylene blue (MB) from aqueous solutions. The maximum adsorption capacity for MB reached 653.6 mg g−1, and the reusability was satisfactory. The adsorption kinetics and isotherm were in good agreement with the pseudo-second-order kinetics and Langmuir models, respectively. The adsorption mechanism was summarised as the synergistic effects of the hierarchically porous structures in SPVPC and various interactions between SPVPC and MB. Considering its low cost and excellent adsorption performance, the prepared porous carbon is a promising adsorbent candidate for dye wastewater treatment.Keywords:porous carbon;sweet potato vine;adsorption;methylene blue
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Energies
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2023
·Vol. 16
·期 21
·7232
·
IF 3.2
Congxiu Guo,Guilin Li,Yujia Wu,Xuhui Wang,Yu Niu,Jiao Wu
Porous carbon materials derived from ZIF-8 have attracted extensive research attention on account of their large surface area, tunable mesoporosity and abundant nitrogen content. However, directly carbonized ZIF-8 usually suffers from a low electronic conductivity, poor wettability and relatively low mesoporosity, which severely restricts their capacitive performance. Herein, P-doped modified carbon materials derived from ZIF-8 (ZPCs) were synthesized by using nontoxic phytic acid as a phosphorus source, followed by carbonization at high temperature. Benefiting from its relatively high specific surface area of 911.7 m2g−1and higher ratio of mesopores, as well as N, O and P doping, ZPC-1000 delivers the largest specific capacity, up to 219.4 F g−1at 1 A g−1, among the prepared samples and an outstanding cycle span, retaining 100% capacity after 2000 cycles at 5 A g−1. In this work, we highlight the strategy of constructing a synergistic effect between high mesoporosity and heteroatom doping, which can greatly boost the capacitive performance of carbon materials.Keywords:P doping;ZIF-8;porous carbon;capacitive performance
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yuehua Pan,Yingxue Pang,Hao Fu,Zhenyu Cai,Yuxiang Deng,Zhiwei Huang,Donglou Ren,Yuezhou Wei,Xinpeng Wang
Extracting uranium from uranium waste streams, particularly utilizing zero-carbon emission photochemistry, emerges as a promising and sustainable strategy. Herein, we construct an SS@Ga/PCS composite photocatalyst, consisting of SnS 2 nanosheets as well as a metal − support produced by confining sub-nano Ga δ+ clusters in the hollow porous carbon spheres (PCS). The Ga δ+ clusters are innovatively introduced as active sites with localized hole capability to simultaneously improve visible light response and carrier separation. In-situ characterizations and theoretical calculations reveal that Ga δ+ clusters induced metal-support interaction (MSI) by optimizing the electronic structure in the PCS host; In addition, Ga δ+ clusters act as plasma excitation elements to enhance the visible light responsiveness and carrier separation of SS@Ga/PCS. Ultimately, the inhomogeneous photocatalysis of uranium extraction achieved superior performance as compared to the pure components, corresponding to an encouraging removal rate of 97.87 % and a photo-extraction capacity of up to 1867.30 mg g −1 in 50 mL of uranium waste solution, as well as a wide-concentration window adaptability and excellent catalytic robustness. More significantly, this ingenious nano-confined strategy extends the design ideas of highly dispersed sub-nanometallic cluster co-catalysts and stimulates the study of the availability of abundant reactive active sites combined with monomer strong interactions, which provides a novel insight into the mechanism of photocatalytic uranium extraction.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2019
·Vol. 43
·期 10
·4160-4167
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IF 3.069
Fangxiao Wang,Yan-ming Liu,Chun-yang Zhang
Water splitting into hydrogen (H2) to produce clean energy is of great significance for sustainable development. Transition metal phosphides (e.g., Ni12P5 nanoparticles) may be used as non-precious earth-abundant electrocatalysts for the H2 evolution reaction, but their poor electronic conductivity and small surface area hinder efficient catalytic H2 production. In this research, we demonstrate for the first time the facile synthesis of porous carbon/Ni12P5 (C/NiP-C) composites with the dispersion of Ni12P5 nanoparticles onto a conductive porous carbon support in an ionic surfactant hexadecyl trimethyl ammonium bromide (CTAB)-mediated ethanol solution. The CTAB plays dual roles in the synthesis including (1) the introduction of carbon to increase the conductivity of the synthetic materials and (2) the formation of uniform Ni12P5 phosphides through the interaction between the H2PO2− anion, Ni2+, and C19H42N+ cation dissociated from CTAB. The obtained C/NiP-C composites may function as electrocatalysts for the hydrogen evolution reaction (HER) with excellent HER performance (η: 63 mV, η10: 176 mV, Tafel slope: 100 mV dec−1, wherein η represents the onset overpotential and η10 represents the overpotential required for a current density (j) value of −10 mA cm−2) compared with the NixPy composites synthesized in pure ethanol (η: 160 mV, η10: 392 mV, Tafel slope: 154 mV dec−1), the C/NiP-P composites synthesized in a P123-mediated ethanol solution (η: 75 mV, η10: 286 mV, Tafel slope: 210 mV dec−1), and the C/NiP-F composites synthesized in a F127-mediated ethanol solution (η: 80 mV, η10: 302 mV, Tafel slope: 189 mV dec−1). The enhanced HER performance can be attributed to the synergistic effects resulting from the unique structure of the porous C support and the well dispersed Ni12P5 nanoparticles.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
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2016
·Vol. 18
·期 7
·1-8
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IF 2.101
Zhao Chenhao,Fang Shuzhen,Hu Zhibiao,Qiu Sheng’en,Liu Kaiyu
The carbon substrate with unique 3D macroporous structure has been prepared through the immediate carbonization of ethylenediaminetetraacetic acid (EDTA) and KOH mixture. The porous carbon composed of micro- and small mesoporous (2–5 nm) structure has a BET specific surface area of 1824.8 m 2 g −1 . The amorphous and nanosized Se is uniformly encapsulated into the porous structure of porous carbon using melting diffusion route, and the weight content of Se in target Se/C composite can be as high as ~50 %. As an Li–Se battery cathode, the Se/C composite delivers a reversible (2nd) discharge capacity of 597.4 mAh g −1 at 0.24C and retains a discharge capacity of 538.4 mAh g −1 at 0.24C after 100 cycles. Furthermore, the composite also has a stable capacity of 291.0 mAh g −1 at a high current of 4.8C. The high specific area and good porous size of EDTA-derived carbon substrate may a be responsibility for the excellent electrochemical performances of Se/C composite.
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
MATERIALS RESEARCH INNOVATIONS
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2025
·
IF 0
Mengyuan Zhao,Tingting Wu,Jiale Han,Fang Li,Hongyuan Zhao
This work designed a low-cost and sensitive electrochemical sensor based on chitosan (CTS)-modified peanut shell-derived porous carbon (PSPC) for the detection of carbendazim (CBZ). PSPC exhibited a unique three-dimensional interconnected porous structure. The hierarchical porous carbon architecture with high specific surface area not only enhanced the adsorption capacity of CBZ but also significantly increased the interface contact area of electrode/electrolyte. CTS was uniformly deposited on the surface of PSPC via ultrasound-assisted liquid-phase dispersion method for the preparation of the PSPC@CTS nanocomposite. Benefiting from the good biocompatibility, adsorption ability and film-forming property of CTS, the PSPC@CTS modified electrode demonstrated good CBZ enrichment ability and improved structural stability. The PSPC@CTS/GCE sensor exhibited a low detection limit of 17.41 nM (S/N = 3) within the linear CBZ concentration range of 0.01–10.0 µM. Satisfactory recoveries of 96.78 –100.42% could validate its practical application potential of the PSPC@CTS modified sensor for the CBZ detection in food samples.
研究领域:
环境科学
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材料科学
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分析化学
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电化学
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纳米技术
✓ 已验证
产品关联
DOI
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Jinsong Shi,Jianguo Xu,Hongmin Cui,Nanfu Yan,Runhan Yan,Yaqing Weng
Porous carbon is a very promising type of CO 2 adsorbent due to its excellent stability, low cost, and tunable physicochemical properties. In the current work, N-doped hierarchically porous carbon was synthesized with the assistance of NaCl template and KHCO 3 activation. A series of carbons with three dimensional and interconnected micro- meso -macroporous structure were successfully prepared. Effects of synthesis conditions on textural properties and N-doping were analyzed and discussed with details. The carbons also exhibited high surface area (725–2423 m 2 /g) and N content (1.49–7.93 wt%). CO 2 adsorption properties were studied with a combined experimental and theoretical approach. At 25 °C and 1 bar, the carbons exhibited CO 2 uptake up to 4.22 mmol/g and CO 2 /N 2 selectivity up to 25.6. Grand canonical Monte Carlo (GCMC) simulation was employed to further elucidate the different roles played by N-doping and textural properties during CO 2 adsorption. Effects of various N-functionalities located in pores with different sizes on CO 2 adsorption were thus revealed. The present study presents a novel strategy for controlled synthesis of porous carbons, and provides helpful insights into their CO 2 adsorption behaviors.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CARBON
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2023
·
IF 10.9
Guifang Yang,Baokun Zhu,Yifeng Ying,Haiqing Li
Porous carbons (PCs), widely deployed sorbents in diverse areas, are usually synthesized by thermochemically carbonizing carbonaceous precursors and thermally regenerated at great energy-cost. To seek alternative solutions to such energy penalty and based on the exceptional localized Eddy current heating (LECH) capacity of metal objects upon their exposure to an alternating magnetic field , LECH-driven synthesis of PCs is explored and exemplified by using nickel foam (NF)-delivered LECH to drive carbonization of phenolic resin (PR) infilled within the voids of NF, producing varied PC-incorporated NFs (NF@PCs). Compared with the PCs prepared by using conventional tubular furnace heating, LECH-driven carbonization of PR is able to produce PCs at lower temperature and with greatly enhanced porosity, surface area and graphitization degree, which are mainly resulting from the localized heating nature of LECH. Driven by the same NF-delivered LECH, the moisture adsorbed in the LiCl-loaded NF@PC can be rapidly and completely released at moderate temperature, demonstrating the highly efficient LECH-driven regeneration of PCs. Given that the LECH is delivered by cost-effective and widely available NFs, occurs within the matrix of PR and PC bulk solid, and remotely triggered by an external magnetic field with greatly mitigated energy loss , LECH-driven carbonization of PR and water desorption from PCs thus demonstrated a new, energy-efficient and low-cost strategy to effectively synthesize and regenerate PCs.
研究领域:
材料科学
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能源工程
✓ 已验证
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2019
·
IF 4.182
Hai-Tao Wang,Ya-Pan Liu,Hao Zhang,Na Chang,Wei Shao,Meng-Shan Shi,De Ao,Mei-Chan Lu
With the regular structures composed of metal clusters and organic ligands, metal-organic frameworks (MOFs) are expected to be the competent stabilizing matrix for nanoparticles and the excellent precursor of metal oxide with carbon species by means of high temperature pyrolysis , resulting to porous architectures with unexpected adsorptive or catalytic properties. Herein, we design and propose a facile route for preparing porous Carbon doped ZnO/TiO 2 @ZIF-8 (C–ZnO/TiO 2 @ZIF-8) multi-component nano-platform using TiO 2 coated ZIF-8 as precursor and template followed by thermal calcination . The resulted C–ZnO/TiO 2 @ZIF-8 nanocrystal simultaneously possesses original ZIF-8 morphology and porous structure with connected ZnO nanoparticles. As a result, C–ZnO/TiO 2 @ZIF-8 shows obviously better adsorption affinity towards methylene blue (MB). Moreover, benefit from the TiO 2 coating outside ZIF-8 matrix, escape of carbon species which originate from pyrolysis of organic ligands is efficiently inhibited, with the resulted materials doped with abundant carbon. Therefore, charge transfer and isolation of the resulted catalyst are promoted accordingly, with catalytic activity of the prepared C–ZnO/TiO 2 @ZIF-8 multi-component photocatalyst significantly increased by 1.8-fold and 3.0-fold compared to ZnO@ZIF-8 photocatalyst under irradiation of UV and visible light, respectively.
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
ACS Catalysis
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2025
·
IF 13.1
Wenhua Zhou,Bolong Li,Gaobo Lin,Teng Guo,Chao Chen,Jie Zhu,Haoan Fan,Xuezhi Zhao,Lei Guo,Weiyu Song,Jianghao Wang,Tianfu Wang,Jie Fu
The Kolbe coupling of biomass-derived carboxylic acids presents a promising route for sustainable production of value-added chemicals. However, conventional direct current (DC) Kolbe electrolysis typically cleaves functional groups in carboxylic acids, significantly hindering its broader application. Herein, we demonstrate that dopant-induced electron localization in activated carbon (AC) facilitates decarboxylative coupling while preserving functional integrity. Experimental and theoretical results reveal that nitrogen doping in AC (N-AC) modulates the local electronic structure and enhances the adsorption capacity of carboxylic acids. Notably, N-AC exhibits a 10-fold increase in the conversion of 10-undecenoic acid compared to AC, with a selectivity of up to 60 ± 2% for the coupling product. More importantly, N-AC effectively catalyzes carboxylic acids with diverse functional groups. This study provides new insights into the structure–property relationship of N-doped carbon and advances the practical implementation of Kolbe electrolysis for biomass valorization.
研究领域:
化学工程
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材料科学
✓ 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）