JOURNAL OF HAZARDOUS MATERIALS
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2019
·
IF 7.65
Li Song,Yuefeng Feng,Changqing Zhu,Fuqiang Liu,Aimin Li
Cr(VI) and Cd(II) are typical heavy metal ions and their co-removal is significant. Nitrogen-doped, bi-functional, and biomass-based composites (CP-BA) were successfully applied for efficient and synergistic removal of Cr(VI) and Cd(II). The mutual promotion ratios of adsorption capacity by Cr(VI) and Cd(II) were 161.32 % and 14.13 %, respectively. In addition, all coexisting inorganic anions could extremely promote the removal of Cd(II) with the best promotion ratio upon phosphate ions as high as 80.00 %. The following co-removal mechanisms were deeply revealed: (1) Cr(VI) combined with protonated imine groups could weaken the electrostatic repulsion between CP-BA and Cd(II) by electrostatic shielding, and further promoted the coordination of Cd(II) with hydroxyl, carboxyl and neutral imine groups. (2) Cd(II) which were coordinated to neutral imine groups could form cation bridges, and thus promoted the interaction with Cr(VI) because of the electrostatic attraction. Moreover, the removal capacity for Cr(VI) and Cd(II) did not display obvious reduction even after four cycles. Therefore, CP-BA showed a great potential in the co-removal of inorganic anion-cation complexes from wastewater.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2024
·
IF 6.3
An Wei,Shunxiang Wang,Xulan Lu,Yongjin Zou,Cuili Xiang,Fen Xu,Lixian Sun,Yunhao Lu
As a commonly used material, wood's inherent flammability poses a significant fire safety hazard to people, and it is necessary to improve the flame-retardant performance of wood. This study prepared a novel lignin-based intumescent flame-retardant (PGL) using phosphorus-rich phytic acid, nitrogen-rich guanazole, and carbon-rich lignin as raw materials. Subsequently, PGL was infiltrated into the urea-formaldehyde resin as a flame-retardant component, and a series of PGL-modified urea-formaldehyde resin wood coatings (PGLUF) were prepared. The wood coated with PGLUF exhibited high flame retardancy and passed the UL-94 V-0 level test with a limit of oxygen index (LOI) of 36.5 %. The total heat release (THR) and peak heat release rate (PHRR) were reduced by 92.73 % and 93.58 %, respectively, compared to pure wood. Moreover, when the PGL content was 3 wt.%, the PGLUF could achieve comparable flame retardancy to the coating containing 5 wt.% commercial flame-retardant (triphenyl phosphate, TPP). PGL also exhibited a plasticizing effect on the coatings. The impact strength of PGLUF-coated wood increased with the increase of PGL content. PGL can simultaneously enhance the flame retardancy and mechanical properties of materials, and the preparation process is green and safe. Therefore, the PGL shows excellent potential in practical applications.
研究领域:
材料科学
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林业工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Shasha Wang,Guangyi Zhang,Ying Zhang
This study addresses the flammability issue of paraffin-based phase change materials (PCMs) and the limitations of most additive flame retardants that fail to exhibit effective flame-retardant properties. Based on the phase change mechanism and chemical structure of paraffin-based PCMs, a novel “composition-structure-function integration” design concept for intrinsic flame-retardant PCM (VOD) is proposed. The synthesized VOD integrates phase change groups with “acid source, carbon source, and gas source.” The phase-change energy-storage performance, thermal stability, and flame-retardant properties of VOD were investigated. The melting enthalpy and crystallization enthalpy of VOD are 59.4 J/g and − 59.2 J/g, respectively. The thermal stability of VOD is significantly superior to that of octadecylamine (ODA), with residual char content reaching 17.1 wt% and 19.6 wt% under nitrogen and air atmospheres, respectively. VOD exhibits remarkable flame-retardant behavior, achieving self-extinguishing within 30 s of ignition. Compared to ODA, its peak heat release rate decreases by 69.9 %. The gaseous pyrolysis products of VOD are analyzed using thermogravimetric-infrared spectroscopy and pyrolysis-gas chromatography–mass spectrometry. Combined with the analysis results of the char layer, the flame-retardant mechanism of VOD is elucidated. This work opens a new research direction for the synthesis of biomass-based PCMs and provides a theoretical foundation and solutions for the scientific design of intrinsic flame-retardant PCM molecular structures.
研究领域:
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
MOLECULES
·
2022
·Vol. 27
·期 19
·6627
·
IF 4.927
Hao Zhang,Lili Liang,Hailing Xi,Datong Liu,Zhanguo Li,Xiaoyan Lin
Compared with polymers and nanoparticles, fatty alcohols can not only increase the stability of foam, but also maintain better foamability at pH < 2, which is beneficial to reduce waste liquid and increase decontamination efficiency for radioactive surface pollution. However, different fatty alcohols have different hydrophobic chain lengths. The effects of fatty alcohols with different chain lengths on the performance of decontamination foam were studied at pH < 2, to assist in the selection of suitable fatty alcohols as foam stabilizers. Combined with betaine surfactant and phytic acid, biomass-based foams were synthesized using fatty alcohols with different chain lengths. When the hydrophobic tail groups of the fatty alcohol and the surfactant were the same, the foam showed the best performance, including the lowest surface tension, the highest liquid film strength, the greatest sag-resistance and the best stability. However, when the hydrophobic tail groups were different, the space between adjacent surface active molecules was increased by thermal motion of the excess terminal tail segments (a tail-wagging effect), and the adsorption density reduced on the gas-liquid interface, leading to increased surface tension and decreased liquid film strength, sag-resistance and stability. The use of decontamination foam stabilized by fatty alcohols with the same hydrophobic group as the surfactant was found to increase the decontamination rate of radioactive uranium pollution from 64 to over 90% on a vertical surface.Keywords:foam decontamination;radioactive pollution;low pH;chain-length matching;biomass-based
研究领域:
环境科学
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放射化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jiaqi Jiao,Han Lu,Conghua Yi,Dongjie Yang,Xuezhi Zeng,Jinxin Lin,Hongqiang Li
Binders are crucial for maintaining the integrity of an electrode and are confronted with the imperative for multifunctionality. Herein, we have developed and synthesized an entirely biomass-based water-soluble binder with outstanding adhesion, conductivity, flowability, and dispersibility for the hard carbon (HC) anode. Specifically, MXene (Ti 3 C 2 T x ) reduces the amount of HC graphite domain imperfections, the cross-linked carboxymethyl chitosan (CCS) chain facilitates Na + movement, and the amphiphilic nature of lignosulfonate (LS) enhances the distribution of active material. As a result, the HC anode achieves an initial coulombic efficiency (ICE) of 88 % and high-capacity retention of 110 % after 100 cycles. This work promotes the progress of green energy in parallel with the promotion of the high-value utilization of biomass.
研究领域:
材料科学
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能源存储
·
生物质利用
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
·
2021
·Vol. 28
·期 4
·689-695
·
IF 1.993
Hong-ying Chu,Hua-bei Li,Xiao-yan Sun,Yao-wang Zhang
The objective of this study is to synthesis biomass-based plasticizer epoxy p -phenylenedioleic acid ester (EPAE) using linoleic acid as raw materials via esterification and epoxidation. EPAE was used as main plasticizer of polyvinyl chloride (PVC) to replace diisobutyl phthalate (DIBP). The plasticizing effect of EPEA on the performance of PVC films was investigated. The results showed that epoxy groups were covalently bonded on branched chains of EPAE. EPAE play a plasticizing role by forming hydrogen bond between epoxy group and a-hydrogen on PVC. When the mass of EPAE was 0.8 g in 2 g PVC, Tg of flexible PVC reached 36.1°C, the elongation at break of flexible PVC was 321.12 ± 6.13%, while the tensile strength reached 19.45 ± 1.35%. The transmittance of DIBP-0.8 and EPAE-0.8 at 800 nm is nearly 70%, indicating relatively high homogeneous amorphous aggregation structures. EPAE showed marginal resistance to volatilization and solvent extraction. The mechanism behind the results was discussed.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
Materials
·
2020
·Vol. 13
·期 20
·4611
·
IF 3.057
Wen Ding,Xiaozhong Wu,Yanyan Li,Shuo Wang,Shuping Zhuo
The biomass-based carbons anode materials have drawn significant attention because of admirable electrochemical performance on account of their nontoxicity and abundance resources. Herein, a novel type of nickel-embedded carbon material (nickel@carbon) is prepared by carbonizing the dough which is synthesized by mixing wheat flour and nickel nitrate as anode material in lithium-ion batteries. In the course of the carbonization process, the wheat flour is employed as a carbon precursor, while the nickel nitrate is introduced as both a graphitization catalyst and a pore-forming agent. The in situ formed Ni nanoparticles play a crucial role in catalyzing graphitization and regulating the carbon nanocrystalline structure. Mainly owing to the graphite-like carbon microcrystalline structure and the microporosity structure, the NC-600 sample exhibits a favorable reversible capacity (700.8 mAh g−1at 0.1 A g−1after 200 cycles), good rate performance (51.3 mAh g−1at 20 A g−1), and long-cycling durability (257.25 mAh g−1at 1 A g−1after 800 cycles). Hence, this work proposes a promising inexpensive and highly sustainable biomass-based carbon anode material with superior electrochemical properties in LIBs.Keywords:biomass-based carbon;nickel nanoparticles;lithium-ion batteries;anode material
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 38
·21927-21933
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IF 10.733
Wenjin Guo,Xiaohan Wang,Xingyuan Lu,Xiang Li,Yang Li,Junqi Sun
The replacement of petrochemical-based self-healing elastomers with biomass-based counterparts is of great significance for environmental protection. Herein, oleic acid and histidine are exploited for the fabrication of biomass-derived elastomers with rapid room temperature self-healing ability. The self-healing elastomers are first synthesized by grafting histidine onto poly(oleic acid) (denoted as POA–His), followed by crosslinking POA–His with transition metal salts. The mechanical properties of the resulting elastomers can be readily controlled by the variation of metal ions as the strength of the coordination bonds is determined by the type of metal ions. The reversibility of the coordination bonds between histidine and metal ions allows the elastomers to be finely healed at room temperature within 1.5 h and recycled multiple times without degradation. We believe that the present study provides a novel route for the fabrication of elastomers with extended service life, good reliability, and minimal impact on the environment.
研究领域:
材料科学
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环境科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
Engineering
·
2025
·
IF 11.6
Fawei Lin,Hongyun Yao,Chujun Luan,Chenxu Zhong,Huiyi Mao,Lei Che,Hongdi Yu,Guanyi Chen,Eslam Salama,Mona Ossman,Li’an Hou
Efficient disposal of oily water pollution and oily sludge (OS) production with low energy demand has garnered significant attention for the low carbon transition of the petroleum industry. How to overcome the hardships from severe emulsion and interaction with soil minerals in emulsion–soil (OS) is a significant challenge with the prospective opportunities of solar energy substitution. This paper proposed the solar-driven photothermal conversion technology for efficient dehydration of OS and purification of oily water using a multifunctional material. A biomass-based carbon aerogel (BCA-600) with a porous three-dimensional structure and photothermal conversion characteristics was synthesized. Interestingly, this carbon aerogel possessed adjustable surface wettability, enabling it to adsorb high viscosity crude oil on the water surface (4.28 g·g −1 ) and achieve demulsification-separation in water-in-oil emulsions (97.28%) with the assistance of solar irradiation. Accordingly, the synergistic action of solar heating and separation-adsorption of emulsion by BCA-600 contributed to the efficient photothermal dehydration for both OS and emulsion. The highest dehydration efficiency for OS reached 90.68% with the OS/BCA-600 mass ratio of 10:2. Moreover, BCA-600 could remain in the dehydrated OS without separation to participate in the following pyrolysis with enhanced effects by confined-catalytic cracking, achieving a “one stone, two birds” effect. Overall, the solar photothermal approach exhibits significant potential for treating oily pollutants, reducing carbon emissions by more than 100 times compared to traditional thermal methods. This could be a strong push for the low carbon transition of the petroleum industry.
研究领域:
环境科学
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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
Polymers
·
2020
·Vol. 12
·期 4
·913
·
IF 3.426
Qiaoguang Li,Xugang Shu,Puyou Jia,Yonghong Zhou
The aim of this study was to develop a facile one-pot reaction for the synthesis of biomass-based hyperbranched poly(ether)s end-capped as acetate esters (BHE) for use as a sustainable, safe and feasible plasticizer for flexible poly(vinyl chloride) (PVC) materials. BHE is completely miscible with PVC but shows weaker plasticizing effect than dioctyl phthalate (DOP) (EΔTgvalue of BHE reaches 64.8%). PVC plasticized with BHE displays greater thermal stability than that of PVC or PVC plasticized with DOP materials. BHE improves the thermal stability and flexibility of PVC materials. As a plasticizer, BHE displays lower solvent extractability and greater volatilization resistance than DOP. Acute oral toxicity indicates that BHE has toxic doses of 5 g/kg, suggesting that BHE is non-toxic.
研究领域:
材料科学
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化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 20
·4815
·
IF 4.2
Xiaoping Yan,Jinguo Wang,Chao Chen,Kai Zheng,Pengfei Zhang,Chao Shen
A biomass-based catalyst, CuxOy@CS-400, was employed as an excellent recyclable heterogeneous catalyst to realize the sulfonylation reaction of aniline derivatives with sodium sulfinates. Various substrates were compatible, giving the desired products moderate to good yields at room temperature. In addition, this heterogeneous copper catalyst was also easy to recover and was recyclable up to five times without considerably deteriorating in catalytic efficiency. Importantly, these sulfonylation products were readily converted to the corresponding 4-sulfonyl anilines via a hydrolysis step. The method offers a unique strategy for synthesizing arylsulfones and has the potential to create new possibilities for developing heterogeneous copper-catalyzed C-H functionalizations.
研究领域:
有机化学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2024
·
IF 12.7
Chunlong Zuo,Wei Tan,Jieyun Zhao,Lina Jiang,Yongli Zhang,Yuanlin Ren,Xiaohui Liu
To develop green and efficient polyacrylonitrile (PAN) fibers with excellent fire safety properties, a new biomass-based flame retardant (PPC@VA) with vinyl-terminated groups was prepared based on the reaction of hexachlorocyclotriphosphonitrile, teat polyphenols, ethylenediamine and vinylphosphonic acid. Subsequently, it was mixed with spinning solution to obtain PPC@VA/PAN through wet spinning, which were then chemically cross-linked via thermal initiation to achieve CC-PPC@VA/PAN fibers. CC-PPC@VA/PAN showed a significant improvement in flame retardancy with a limiting oxygen index value of 32.5 %. The peak of smoke production rate, total smoke production and CO production rate were lowered by 81.9 %, 77.8 % and 91.3 %. Besides, the hazardous gas HCN was greatly suppressed. Owing to the macromolecular entanglement, hydrogen bonding and covalent cross-linking, CC-PPC@VA/PAN improved elongation at break and tensile strength by 19.2 % and 72.1 %. Also, chemical cross-linking contributed to decrease the migration of P/N-based flame retardants, lower the potential risk of water eutrophication and increased the service life of the fibers.
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）