INDUSTRIAL CROPS AND PRODUCTS
·
2019
·
IF 4.191
Qilin Zhang,Chao Wang,Jianzhen Mao,Shri Ramaswamy,Xueming Zhang,Feng Xu
A bifunctional solid organocatalyst, sulfamic acid, was evaluated to produce furfural from xylose and different biomass in an environmentally friendly system comprising Gamma-Valerolactone (GVL) and water. The highest yield (70.19%) of furfural was achieved in a 90% solution of GVL in water containing 10 mol% of sulfamic acid at 190 °C for 15 min from xylose. The potential mechanism of sulfamic acid efficiently catalyzing xylose isomerization and dehydration is presented for the first time. It is hypothesized that another sulfamic acid form, the zwitterionic unit (H 3 N + SO 3 − ) is crucial in efficiently catalyzing isomerization reaction due to its electron-rich sulfonate being superior in attacking the hydrogen atom on C1 leading to the xylose tautomerization to xylulose, a shorter route to furfural, and finally, the NH 2 SO 3 H with strong acidity also promotes the xylulose dehydration to furfural. The above system was evaluated using various biomass species including corncob, Miscanthus × giganteus , the hull and shell of Camellia oleifera (tea) fruit and Aleurites fordii HemsL. (tung) fruit. Almost all these biomass showed excellent furfural yields (over 70%), with tung shell providing the best yield of 92.19% at 200 °C and reaction time of 30 min.
研究领域:
化学工程
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催化
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生物化工
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可再生能源
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Zhaojin Zhang,Subhan Mahmood,Ahmad Ali,Zhiyi Ye,Shun Yao
For the first time, the valorization of waste shells from the Siraitia grosvenorii industry involves their conversion into carbon dots (CDs) for the detection of deep eutectic solvents (DESs) concentrations through their fluorescence effect. The material composition of the fruit shells was first analyzed, revealing that lignin constitutes 29.8 % of their total mass. Then four types of DESs were prepared for the extraction of lignin from these shells; among them, choline chloride-lactic acid (ChCl-Lac) achieving the highest extraction rate of 92.49 %. The obtained lignin was characterized and subsequently used as a raw material to synthesize carbon dots possessing tunable fluorescent properties with a quantum yield of 5.73 %. Moreover, it was found that Fe 3 + could quench the fluorescence of the CDs, while the addition of certain DESs could restore the quenched fluorescence. The presence of DESs alone could also induce changes in fluorescence when interacting with the CDs. Based on this effect, a new system for the effective quantitation of the concentration of DESs in aqueous solutions using CDs was established, and DESs were used in several main steps and played multiple roles. This study provides not only a solution for the value-added utilization of solid waste from current fruit industry, but also a new approach for the concentration detection of DESs in aqueous solutions.
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
ChemistrySelect
·
2025
·Vol. 10
·期 17
·e202500240
·
IF 2
Yuanwei Xiao,Yanyan Du,Xu Huang,Guihong Lan,Bo Xu,Haiyan Qiu
Graphical This study presents a low-temperature sulfuric acid carbonization method to convert jacaranda husk into sulfonated biochar (JSS) with enhanced antibiotic adsorption. JSS exhibits superior adsorption capacities (161.76 mg g −1 for tetracycline, 63.96 mg g −1 for ciprofloxacin) via synergistic mechanisms: electrostatic attraction, π–π interactions, and hydrogen bonding. The material retains > 80% efficiency after five regeneration cycles, offering a sustainable solution for water pollution remediation. In this study, an innovative low-temperature sulfuric acid carbonization method was developed to convert agricultural waste jacaranda husk into high-performance biochar (JSS), which overcomes the problems of surface ash coverage and functional group loss caused by traditional high-temperature pyrolysis (>500 °C). By introducing a sulfonic acid group (-SO₃H) and retaining abundant oxygen-containing functional groups (-OH, -COOH), the adsorption capacity of JSS for tetracycline (TC) and ciprofloxacin (CIP) reached 161.76 and 63.96 mg g −1 , respectively, which was about three times higher than that of conventional pyrolysis biochar (JST). Experiments show that JSS exhibits the best adsorption performance in the pH range of 6–7, and efficient removal is achieved through the synergistic action of electrostatic attraction, π–π interaction, and hydrogen bonding. In addition, the adsorption efficiency of JSS remained above 80% after five regeneration cycles, demonstrating excellent stability and reusability.
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
Scientific Reports
·
2016
·Vol. 6
·期 1
·1-11
·
IF 5.228
Dan Jiang,Fang Zhen,Chin Siew-xian,Tian Xiao-fei,Su Tong-chao
Biohydrogen production has received widespread attention from researchers in industry and academic fields. Response surface methodology (RSM) was applied to evaluate the effects of several key variables in anaerobic fermentation of glucose with Clostridium butyrium and achieved the highest production rate and yield of hydrogen. Highest H 2 yield of 2.02 mol H 2 /mol-glucose was achieved from 24 h bottle fermentation of glucose at 35 °C, while the composition of medium was (g/L): 15.66 glucose, 6.04 yeast extract, 4 tryptone, 3 K 2 HPO 4 , 3 KH 2 PO 4 , 0.05 L-cysteine, 0.05 MgSO 4 ·7H 2 O, 0.1 MnSO 4 ·H 2 O and 0.3 FeSO 4 ·7H 2 O, which was very different from that for cell growth. Sugarcane bagasse and Jatropha hulls were selected as typical tropical biomass wastes to produce sugars via a two-step acid hydrolysis for hydrogen production. Under the optimized fermentation conditions, H 2 yield (mol H 2 /mol-total reducing sugar) was 2.15 for glucose, 2.06 for bagasse hydrolysate and 1.95 for Jatropha hull hydrolysate in a 3L fermenter for 24 h at 35 °C, with H 2 purity of 49.7–64.34%. The results provide useful information and basic data for practical use of tropical plant wastes to produce hydrogen.
研究领域:
微生物学
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可再生能源
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环境科学
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产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
·
IF 6.5
Jinni Yu,Qianqian Shang,Meng Zhang,Lihong Hu,Yonghong Zhou
Cardanol, a by-product from the cashew nut processing industry, has drawn extensive attention for constructing superhydrophobic coating . In this work, cardanol-based epoxy resin and cardanol-based benzoxazine were synthetized using cardanol as starting material. Bio-based superhydrophobic coating was prepared by a spraying method through the thermal curing of cardanol-based epoxy resin and cardanol-based benzoxazine in the presence of hydrophobic ZIF-8 (ZIF-8/PDTS) nanoparticles . The resulting coating exhibited excellent superhydrophobicity with a water contact angle (WCA) of 160.5 ± 1.3° and excellent self-cleaning property. The coating also demonstrated remarkable mechanical property without loss its superhydrophobicity even after experiencing abrasion (33 cycles), tape peeling (100 cycles), high temperature (up to 200 °C), and acidic and alkaline solutions treatment (pH = 1–13). More importantly, the coating on Q235 carbon steel surface had great anti-corrosion performance with the impedance modulus (|Z| 0.01Hz ) up to 1.4 × 10 11 Ω·cm 2 at low frequencies. The corrosion resistance of the coating could be repaired by respraying the coating solution. The work provides a valuable preparation strategy for sustainable superhydrophobic coatings from bio-mass cardanol that can be widely applied in the field of metal anticorrosion.
研究领域:
材料科学
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生物化学
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防腐蚀工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Jiawei Li,Chengyu Hong,Hao Zhang,Jiaqi Zhang,Ruixue Zhai,Bin Fei,Chao Zhou
The increasingly severe energy shortage and growing environmental problems have accelerated the rapid development of sustainable polymer materials. Hereon, a novel method was proposed for the synthesis of cashew nut shell oil-based waterborne polyurethane (WPUs), which exhibited excellent toughness, transparency, water resistance, UV resistance and corrosion resistance. Specifically, the sorbitan monooleate-based siloxane (MSP) was prepared via a thiol-ene click chemistry reaction. Subsequently, the plant-based phloretin (PRT) and MSP were introduced as polyols into the skeleton of WPUs through the molecular structure design strategy. Series of high bio-based content (91 %) WPUs networks were obtained via pre-polymerization and self-emulsification methods. The properties of their dispersions and films were thoroughly investigated, and it was found that the addition of MSP and PRT enhanced the overall performance of WPUs film. For instance, there was a significant increase in T g . Additionally, they exhibited a maximum tensile strength of 31.5 MPa and a maximum toughness of 53 MJ/m 3 , which were the most outstanding among all reported plant oil-based WPU systems so far, indicating excellent tear resistance. Interestingly, the water absorption rate of PSWPU-40 was reduced to 7.1 %, suggesting good water resistance, which resolved the contradiction between the mechanical properties and water resistance of the current plant oil-based WPU systems. The PSPWU films exhibited promising application prospects, exemplified by its ability to effectively shield the entire UV range. Furthermore, its coating demonstrated outstanding anti-corrosion properties with a maximum anticorrosion efficiency of 97.1 %. It could be attributed to the synergistic effect of a self-crosslinking structure, higher crosslinking density, a tighter network structure, and stronger intermolecular forces (H-bond). This work provided a meaningful guide for the application and development of high-performance bio-based WPU functional coatings.
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
JOURNAL OF MOLECULAR LIQUIDS
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2024
·
IF 5.3
Ya-Peng Du,Xin-Yu Tian,Xiao-Ping Zheng,Yu Chai,Yu-Cang Zhang,Yan-Zhen Zheng
Biomass serves as a crucial source of renewable energy and potential raw materials for synthesizing various value-added chemicals. This study explored the direct conversion of the cellulose of passion fruit shells into 5-hydroxymethylfurfural (5-HMF), a promising substitute for fossil-derived compounds, by combining halogenated metal ionic liquids (ILs) and organic acids through one-pot hydrothermal reaction. Factors such as the type of ILs and organic acids, reaction time and temperature, as well as the quantity of dimethyl sulfoxide (DMSO) in the solvent, and the loading of substrate, IL, and organic acid were investigated for their impact on 5-HMF yield. Optimization of reaction conditions led to the attainment of the highest 5-HMF yield, reaching 33.1 ± 0.34 % based on the cellulose content within the passion fruit shell. Furthermore, the structural and morphological changes of the solid residues were analysed through techniques such as Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). These analyses revealed the progressive conversion of cellulose, hemicellulose, and lignin, accompanied by the formation of humin by-products. This integrated approach for 5-HMF production from agricultural waste introduced novel possibilities for transforming sustainable biomass resources into valuable chemical products.
研究领域:
化学工程
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可再生资源
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
Innovative Food Science & Emerging Technologies
·
2025
·
IF 6.8
Xiangyan Mo,Fangxue Hang,Er-Fang Ren,Lili Gai,Kai Li,Debao Niu
Camellia oleifera ( C. oleifera ) shells, a major by-product of the camellia oil industry, are rich in tea saponins. The efficient extraction and characterization of tea saponins from C. oleifera shells using deep eutectic solvents (DESs) were investigated, with the extraction mechanism further explored through scanning electron microscopy (SEM) and molecular dynamics simulations. A total of 24 different types of DESs were prepared, with the optimal DES identified as a combination of L-proline and acetamide (the molar ratio of 1:4). Response surface methodology (RSM) optimization revealed that the maximum yield of tea saponins extraction reached 22.46 %. 18 kinds of tea saponin monomers were identified by ultrahigh-performance liquid chromatography coupled with quadrupole-orbitrap high-resolution mass spectrometry (UPLC-Q-Orbitrap HRMS). SEM analysis showed that DESs effectively disrupted the surface structure of C. oleifera shell. Furthermore, molecular dynamics simulations demonstrated the high extraction efficiency of DESs was due to their larger solvent accessible surface area (SASA), increased number of hydrogen bonds, extended hydrogen bond lifetime, and lower intermolecular interaction energy between DESs and tea saponins. These findings provide new insights into the extraction mechanism and contribute to the optimization of DES-based extraction techniques for bioactive compounds from natural plant sources.
研究领域:
植物化学
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食品科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Félix Mérimé Bkangmo Kontchouo,Hao Xu,Marie Ganmo Koutchouo,Kuan Ding,Chayanoot Kositanont,Chotiros Dokkhan,Thipjak Na Lampang,Chanchana Thanachayanont,Xun Hu,Chaoyang Xu,Shu Zhang
Hydrothermal carbonization of lignocellulosic biomass results in hydrochar with abundant surface functionality and low degree of carbonization. In this work, Cola Shell was subjected to a pretreatment with the Deep Eutectic Solvent (DES) prior to hydrothermal carbonization under different conditions (210 ºC and 260 ºC). The aim was to ascertain the impact of pretreatment with DES on the properties of hydrochars. The results show that pretreatment with DES at 110 ºC favors the disintegration of hemicellulose while promoting the cellulose hydrolysis and dehydration. The lignin removal formed a snow cloud of particles on hydrochar surface, which further undergoes polymerization at a high HTC temperature to form a cluster of fibrous carbonaceous material, contributing to increase the degree of carbonization and thermal stability of hydrochar. DES pretreatment also reduced structural defects while increasing the cellulose crystallinity. In addition, DES pretreatment increased the nitrogen content and energy yield without affecting the calorific value of hydrochar-derived Cola Nut Shell.
研究领域:
生物质能
·
材料科学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Yi Hu,Dezhi Chen,Rui Zhang,Yuan Ding,Zhong Ren,Maosheng Fu,Xiukun Cao,Guisheng Zeng
Waste-derived biochar has been emerged as promising catalysts to activate peroxymonosulfate (PMS) for the degradation of organic contaminants . Herein, passion fruit shell derived biochar (PFSC) was prepared by a one-pot pyrolysis method and used as a metal-free catalyst to activate PMS for the degradation of tetracycline hydrochloride (TC). The batch experiments indicated that the pyrolysis temperature could influence the efficiency of PFSC for the activation of PMS. In the PFSC-900 (prepared at 900 °C)/PMS system, the degradation rate of TC can reach 90.91%. The quenching test and electron paramagnetic resonance spectra revealed that the high catalytic performance of PFSC-900/PMS system was mainly attributed to the non-free radical reaction pathway containing a carbon bridge, and the TC degradation was controlled primarily by singlet oxygen-mediated oxidation . Moreover, the carboxyl group of ketones and the graphite-N atoms on PFSC-900 are the possible active sites of the non-free radical pathway including direct electron transfer or the formation of O 2 •- / 1 O 2 . This study not only shows a new type of biochar as an efficient catalyst for PMS activation but also provides a way of value-added reuse of passion fruit shell.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2022
·Vol. 62
·期 6
·1823-1832
·
IF 2.573
Zixin Liu,Huan Liu,Yan Wang,Haoran Yu,Jianying Wang
Hypercrosslinked polymers (HCPs) have aroused considerable attention due to their high chemical stability and potential applications in adsorption. A series of HCPs were prepared via one-step solvent knitting method using the cashew nut shell liquid (CNSL) as bio-based building block. Characterization of the prepared samples was performed by N 2 adsorption, Fourier transform infrared, Raman spectra, solid-state 13 C NMR spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy, and transmission electron microscopy images. Depending on the N 2 adsorption, the as-prepared CNSL-HCP4 exhibits the highest specific surface area of 93 m 2 ·g −1 and displays a uniform pore-size distribution. TGA results show that the decomposition temperature of the polymers exceeds 350°C. More significantly, the dynamic adsorption of high concentration of volatile organic compounds (VOCs) was investigated with CNSL-HCP4 under dry and humid conditions. The results show that the maximum adsorption capacity of o -xylene under dry conditions is 217 mg·g −1 and its corresponding adsorption amount (208 mg·g −1 ) decreases slightly under 30% relative humidity condition, indicating that CNSL-HCP4 had a hydrophobic surface. A little decrease in adsorption capacity of o -xylene on CNSL-HCP4 after five recycles confirms the reusability of the CNSL-HCPs. Therefore, CNSL-HCP4 is considered to be a promising candidate for potential adsorbent in recycling the VOCs from the exhaust.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
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2024
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IF 2.3
Athar Ali Khan Gorar,Guo Zhiyi,Zhicheng Wang,Chen Qiufei,Abbas Daham,Muhammad Nadeem Ashraf,Jun Wang,Wen-Bin Liu
An isothermal compression molding process was used to create composites reinforced with pistachio shell particles. The composites were made using Bisphenol A–aniline-based benzoxazine and bio-based benzoxazine (VB) monomers derived from vanillin and furfuryl amine. The benzoxazine composites were developed by following green chemistry principles and blending with different weight percentages of Alkali treated pistachio shell particles. Proton nuclear magnetic resonance and Fourier transform infrared spectroscopy confirmed the structure of the VB monomer. Differential scanning calorimetry study shows the curing behavior of monomers and their blends. Surface treatment significantly enhanced the filler’s thermal stability. Copolymerization improved mobility and helped to align the chain and activate reactive groups at lower temperatures, lowering the curing temperature to 229°C with the inclusion of particles. The mechanical properties of composites are significantly enhanced. Compared to the neat matrix, composites showed a maximum increase of 155% in bending strength and 104.5% in impact tests. The theoretical model and simulation results are in good agreement with the experiment data. Thermogravimetric analysis of composites showed that neat polymers and composites have excellent thermal stability (T10% of 296; Yc 38.4%). The flammability test (UL-94) reveals that composites are rated as V-0 and can be categorized as flame-retardant materials.
研究领域:
材料科学
·
绿色化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）