Green Processing and Synthesis
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2022
·Vol. 11
·期 1
·184-194
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IF 3.97
Qiuyun Zhang,Binbin Yang,Yuanyuan Tian,Xianju Yang,Rongfei Yu,Jialu Wang,Taoli Deng,Yutao Zhang
In the present study, a facile solvothermal method was used for the synthesis of silicotungstic acid (HSiW) immobilized on Ce-based metal organic framework (Ce-BDC) and embedded in Zr-based metal-organic framework (UiO-66(Zr)) composite catalyst, namely, Ce-BDC@HSiW@UiO-66 for the production of biodiesel through green fatty acid esterification. The obtained hybrids were characterized by various characterization technologies, including Fourier transform infrared, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, N 2 physisorption, X-ray photoelectron spectroscopy, and temperature-programmed desorption of NH 3 (NH 3 -TPD) analysis. The characterization analyses showed that the hybrids have been successfully synthesized. Also, the volume and pore size of UiO-66(Zr) were changed by introducing HSiW@Ce-BDC, and the resulting Ce-BDC@HSiW@UiO-66 possessed the mesoporous structure and relatively high surface area. Simultaneously, the NH 3 -TPD analysis of Ce-BDC@HSiW@UiO-66 reveals that the acid strength was increased in comparison with HSiW@Ce-BDC. In addition, the composite Ce-BDC@HSiW@UiO-66 demonstrated high catalytic activity, and the oleic acid esterification gave 81.5% conversion at optimum conditions of 0.2 g catalysts, 1:30 oleic acid to methanol molar ratio at 130°C for 4 h. More interestingly, after six recycling cycles, the reduction in the conversion rate was only 4.6%, indicating that Ce-BDC@HSiW@UiO-66 has excellent reusability. Our study provides an effective approach to synthesize multifunctional hybrids for green biofuel production.
研究领域:
化学工程
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催化材料
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可再生资源
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DOI
高影响因子
Green Processing and Synthesis
·
2024
·Vol. 13
·期 1
·
IF 3.8
Jianuo Sun,Haokun Ke,Jinghan Wang,Xianchao Du,Hongxia Hao,Hong Zhou
Based on the surface plasmon resonance imaging (SPRi) instrument, we established a new method of analyzing morphine in urine by processing a calibration curve. According to an inhibition immunoassay, gradient concentration of morphine and morphine-BSA fixed on the chip competitively combine with morphine antibody on the chip. Given the three mathematical models, the data of SPRi signals generated from SPRi with morphine was processed to obtain the calibration curve. Ultrafiltration was used to pretreat blank urine samples with adding morphine, and then investigated the advantages and disadvantages of each model. With a limit detection of 6.57 ng·mL −1 , the method and mathematical models can provide robust support for SPRi sensors used in further environmental detection, such as the epidemiological study of sewage.
研究领域:
分析化学
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生物化学
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环境科学
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传感器与执行器
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药理学
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产品关联
DOI
高影响因子
Green Processing and Synthesis
·
2025
·Vol. 14
·期 1
·
IF 3
Yeqing Zhu,Xiaojun Huang,Tianxiang Yu,Kun Liu,Meng Zhang
The fly ash (FA) is one of the large amount of solid wastes stored in China. Because of its low price, large specific surface area, and surface electronegativity, reasonable modification can turn FA into treasure, prepared as an adsorption material with good adsorption performance. In this article, the industrial solid waste FA is used as raw material, and the FA-based sodium aluminosilicate was synthesized by a one-step hydrothermal alkali dissolution method and characterized by X-ray fluorescence, X-ray diffraction, scanning electron microscopy, Fourier transform infrared, Brunauer Emmett Teller, and other test methods. The results show that (1) aluminum silicate sodium hydrate can be synthesized by low-temperature method under atmospheric pressure to form P-type zeolite and calcite structure. (2) Alkali concentration, temperature, and reaction time affect the structure of aluminosilicate sodium hydrate. With the increase of alkali concentration, temperature, and reaction time, the product changes from P-type zeolite to calite structure. (3) The optimal synthesis condition of FA for sodium aluminosilicate hydrate is as follows: the concentration of NaOH solution is 4 mol·L −1 , the dissolution temperature is 80°C, the reaction time is 21 h, and the specific surface area is 60.54 m 2 ·g −1 .
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
Green Processing and Synthesis
·
2024
·Vol. 13
·期 1
·
IF 3.8
Nguyen Tien Dung,Duong Tra My,Nguyen Thuy Chinh,Nguyen Quy Dai,Vu Dinh Hieu,Tran Thanh Thuy,Nguyen Kim Thoa,Thai Hoang
This work concentrated on the decoration of AgNPs to yellow phosphorus slag (YPS) using both chemical (NaBH 4 ) and biological ( Areca catechu nut and Jasminum subtriplinerve leaf extracts) reducing agents, as well as its use as antibacterial and enhancement additives for organic coatings based on acrylic emulsion resin. It is the first study about the decoration of AgNPs on the surface of YPS using bio-reduction agents ( A. catechu nut and J. subtriplinerve leaf extracts). The characteristics of YPS decorated by AgNPs (YPS@AgNPs) were determined using attenuated total reflectance infrared spectroscopy, scanning electron microscopy, X-ray diffraction, ultraviolet-visible spectroscopy and dynamic light scattering methods. To quantify the amount of AgNPs in YPS@AgNPs, atomic absorption spectroscopy was used. The results of YPS@AgNPs fabrication confirmed that the above green reduction agents had a higher efficiency and were more suitable than the chemical reduction agent (NaBH 4 ). Moreover, the ability to inhibit the growth of bacteria strains of YPS@AgNPs using the J. subtriplinerve leaf extract as a reducing agent gave the best result among the three agents. In particular, the bactericidal activity of YPS@AgNPs against the new marine bacterium, Pseudomonas stutzeri B27 , was evaluated, and it was found that YPS@AgNPs can inhibit the growth of an antibiotic-resistant bacterium, P. stutzeri B27 . They enhance not only the mechanical properties but also the bactericidal ability of the water-borne acrylic resin coating.
Graphical abstract
研究领域:
材料科学
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环境科学
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微生物学
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产品关联
DOI
高影响因子
Green Processing and Synthesis
·
2025
·Vol. 14
·期 1
·
IF 3
Fuhua Wei,Yan Wang,Qinhui Ren,Qin Zhang,Hongliang Chen,Zhao Liang
Cr/Co-MOFs were synthesized via a solvothermal method using chromium acetate and cobalt chloride hexahydrate as metal ions, and trimeric acid as the organic ligand. The structures of Cr/Co-MOFs were characterized using Fourier infrared spectroscopy, X-ray diffraction, and scanning electron microscopy techniques. These Cr/Co-MOFs were used for removing organic contaminants in wastewater treatment. Fleroxacin and Rhodamine B (RhB) were specifically selected as target molecules in this study to evaluate the removal efficiency based on the mass of Co/Cr-MOFs, concentrations of organic contaminants, and adsorption time. Experimental findings indicated that at a Co/Cr-MOFs dosage of 100 mg, with initial concentrations of Fleroxacin (30 ppm) and RhB (20 ppm), removal efficiencies achieved were 95% and 99%, respectively. Within a timeframe of 5 h, Co/Cr-MOFs attained adsorption capacities amounting to 269.6 mg·g −1 for fleroxacin and 289.5 mg·g −1 for RhB. The interaction between Co/Cr-MOFs and fleroxacin, as well as RhB, is primarily attributed to factors such as pore size, hydrogen bonding, electrostatic charge, and π–π interactions. Moreover, theoretical analysis corroborated these experimental results by demonstrating conformity between the adsorption process and both second-order kinetic model equations alongside Langmuir isotherm model equations. Collectively, the experimental data combined with theoretical investigations underscore the practical significance associated with employing Co/Cr-MOFs for effective eradication of organic pollutants.
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
Green Processing and Synthesis
·
2024
·Vol. 13
·期 1
·
IF 3.8
Bo Yu,Yan Li,Xiang-Nan Fu,Lei Yu,Hu-Dai Fu,Yan-Xin Cao,Zhi-Hong Chen
The energy and environmental crisis pose a great challenge to human development in the 21st century. The design and development of clean and renewable energy and the solution for environmental pollution have become a hotspot in the current research. Based on the preparation of transition metal phosphates, transition metals were used as raw materials, Prussian blue-like NiFe(CN) 6 as a precursor, which was in situ grown on nickel foam (NF) substrate. After low temperature phosphating treatment, a bimetallic phosphide electrocatalyst (NiFe) 2 P/NF was prepared on NF substrate. Using 1 mol·L −1 KOH solution as a basic electrolyte, based on the electrochemical workstation of a three-electrode system, the electrochemical catalytic oxygen evolution performance of the material was tested and evaluated. Experiments show that (NiFe) 2 P/NF catalyst has excellent oxygen evolution performance. In an alkaline medium, the overpotential required to obtain the catalytic current density of 10 mA·cm −2 is only 220 mV, and the Tafel slope is 67 mV·dec −1 . This is largely due to: (1) (NiFe)2p/NF nanocatalysts were well dispersed on NF substrates, which increased the number of active sites exposed; (2) the hollow heterostructure of bimetallic phosphates promotes the electron interaction between (NiFe) 2 P and NF, increased the rate of charge transfer, and the electrical conductivity of the material is improved; and (3) theoretical calculations show that (NiFe) 2 P/NF hollow heterostructure can effectively reduce the dissociation barrier of water, promote the dissociation of water; furthermore, the kinetic reaction rate of electrocatalytic oxygen evolution is accelerated. Meanwhile, the catalyst still has high activity and high stability in 30 wt% concentrated alkali solution. Therefore, the construction of (NiFe) 2 P/NF electrocatalysts enriches the application of non-noble metal nanomaterials in the field of oxygen production from electrolytic water.
研究领域:
材料科学
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电化学
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可再生能源
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产品关联
DOI
高影响因子
Green Processing and Synthesis
·
2024
·Vol. 13
·期 1
·
IF 3.8
Li Chen,Gengyuan Zhang,Baofeng Xu,Jianwei Guo
Cellulose-based aerogels have become promising adsorbents for organic pollutants and spilled oil due to their high selectivity and excellent sorption capacity. However, the high costs of preparation limit their practicality. In this study, cellulose fibers were fabricated from corn straw via simple alkaline pulping and bleaching. A cellulose aerogel (CA) was then prepared by the freeze-drying method with polyvinyl alcohol as the binder. After treatment with methyltrimethoxysilane by facile chemical vapor deposition, a modified cellulose aerogel (MCA) with water contact angles up to 154.8° was obtained, which exhibited superhydrophobicity. Importantly, the MCA has both high porosity (98.35–98.94%) and low density (16.33–23.95 mg·cm −3 ). In addition, the MCA can separate oil–water mixtures by gravity filtration with separation efficiency up to 97.3% and flux as high as 9827 L·m −2 ·h −1 . This conversion of agricultural wastes into an efficient and high value-added adsorbing material is a promising development in the field of oil–water separation that offers a green and efficient strategy to combat the leakage of organic solvents and oil into the environment.
研究领域:
材料科学
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环境科学
·
农业废弃物利用
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产品关联
DOI
高影响因子
Green Processing and Synthesis
·
2021
·Vol. 10
·期 1
·284-294
·
IF 2.83
Qiuyun Zhang,Qizhi Luo,Xianju Yang,Yaping Wu,Binbin Yang,Jialu Wang,Yutao Zhang
MIL-125(Ti) metal–organic framework-derived nanoporous titanium dioxide–heteropoly acid (PW–TiO 2 ) have been synthesized by a facile hydrothermal approach and subsequent calcination, and the PW–TiO 2 catalysts were investigated using various characterization technologies including FTIR, XRD, SEM, TEM, N 2 -physisorption, and NH 3 -TPD. Further, we investigated the use of PW–TiO 2 composites as heterogeneous acid catalysts for the catalytic esterification of oleic acid. Among all series of catalysts, the calcined PW–TiO 2 at a temperature of 350°C showed excellent activity with a high conversion of 90.5% at 160°C for 4 h. More importantly, the catalyst could be simply separated via centrifugation and reused for six cycles and shows a relatively high conversion of 74.8%.
✓ 已验证
产品关联
DOI
高影响因子
Green Processing and Synthesis
·
2020
·Vol. 9
·期 1
·650-663
·
IF 1.672
Wanwan Wang,Jibao Cai,Zhenyu Xu,Yi Zhang,Fanchao Niu,Miao Gao,Jun Yang
A method was developed for rapid qualitative determination of lignocellulose in the tobacco cell wall by utilizing 2D heteronuclear single quantum coherence NMR spectra (2D HSQC NMR). Traditional methods for analyzing the structure of lignocellulose involve many steps of separation and extraction, which is labor-intensive. In this work, the whole cell wall was milled and dissolved in deuterium solvent. The solvent dimethylsulfoxide (DMSO-d 6 ) containing hexamethylphosphoramide (HMPA-d 18 ) enhanced swelling of the sample and gave high-resolution spectra. The tobacco samples are ball milled at different ball milling times, and the state of the particles is observed through an electron microscope, and then the probability of the particles being less than 5 µm is counted. Through the comparison of the abundance and integration of the peak signals in the spectra under different transmittances, it was determined that when the milling time was 6 h, the quality of the NMR spectra was the best. The optimum conditions of characterizing tobacco structure were DMSO-d 6 /HMPA-d 18 solution and 6 h milling time. Under these conditions, complete representation of the structure of lignocellulose and simplified process could be achieved. Graphical abstract
研究领域:
植物学
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生物化学
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产品关联
DOI
高影响因子
Green Processing and Synthesis
·
2021
·Vol. 10
·期 1
·874-881
·
IF 2.83
Xin Zhou,Ge Gao,Guangxiang He,Xiaoyan Guo,Haibo Jin,Lei Ma
The side-chain alkylation of cumene and ethylene over a solid superbase catalyst K/KOH/ γ -Al 2 O 3 is investigated. The effects of the reaction temperature, pressure, and time on the conversion of cumene and selectivity of tert -amylbenzene (TAB) are discussed. The experimental results show that the conversion of cumene to tert -pentylbenzene increases with the increase in reaction temperature and ethylene pressure. The catalytic reaction has certain operational flexibility in terms of the reaction temperature, pressure, and time. In addition, the catalytic reaction can achieve directional conversion. The optimum operating conditions are obtained using a single factor test. The conversion of cumene is 99.8% and the selectivity toward TAB is 97.9% under catalyst concentration of 4 wt%, reaction temperature of 55°C, reaction pressure of 0.45 MPa, and reaction time of 30 min. The deactivation of catalyst is mainly caused by oxygen and water in the raw material.
研究领域:
催化化学
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有机合成
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产品关联
DOI
高影响因子
Green Processing and Synthesis
·
2019
·Vol. 8
·期 1
·667-676
·
IF 1.128
Dan Chen,Binglin Li,Bin Li,Xiaoli Zhang,Longhui Wei,Wenwen Zheng
Catalytic efficiency in synthesis of vitamin E succinate was dramatically increased via the preparation of robust catalyst and the improvement of reaction system. 4-dimethylaminopyridine (DMAP) was covalently immobilized on nano-SiO 2 to avoid the catalyst contamination of the product and permit the easy recycling of DMAP. Then, a hexane-acetone mixed solvent system was firstly introduced to replace the traditional single-solvent system, which was employed to improve the activity of immobilized DMAP derivative and the substrate solubility of the reaction system. The highest vitamin E succinate yield of 94% was achieved. In addition, the recyclability and stability of the immobilized DMAP derivative was excellent, the yield of vitamin E succinate had no obvious loss and remained 90% after recycling 20 times. The excellent results make this technology be a promising candidate for the industrial production of vitamin E succinate.
研究领域:
生物化学
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制药工程
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产品关联
DOI
高影响因子
Green Processing and Synthesis
·
2021
·Vol. 10
·期 1
·178-188
·
IF 2.83
Su Wen,Yang Hui,Wang Chuang
Nano-selenium was synthesized using lemon juice as a reducing agent. The experiments showed that pH value affected greatly the shape and the size of the prepared nano-selenium. At pH 9, lemon juice could reduce 50 mmol/L of selenite ions to nano-selenium with particle size between 50 and 90 nm, which was spherical and well dispersed. Lemon juice acted as both a reducing agent and a stabilizer in the synthesis of nano-selenium, in which the chemical interaction between biomolecules and the nano-selenium surface was the basis for the stable existence of nano-selenium. The selenite concentration influenced the formation of nano-selenium, and a low selenite concentration was beneficial to obtain small particles. The achieved nano-selenium exhibited a strong antioxidant activity positively related to concentration. The comparative study showed that the antioxidation of nano-selenium is weaker than that of vitamin C but higher than that of lemon juice.
Graphical abstract
Green synthesis of nano-selenium from lemon juice, selenium nanoparticles coated with macromolecules, and antioxidant activity.
研究领域:
生物化学
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纳米生物学
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食品科学
✓ 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）