Catalysts
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2022
·Vol. 12
·期 1
·104
·
IF 4.501
Ying Duan,Qianqian Luo,Renfeng Nie,Jianshe Wang,Yongsheng Zhang,Tianliang Lu,Chunbao Xu
The production of methyl lactate as a degradable polymer monomer from biomass was an important topic for a sustainable society. In this manuscript, glycerol was oxidated to methyl lactate catalyzed by the combination of Au-CuO and Sn-Beta. The influence of Sn content, Sn source, and the preparation conditions for Sn-β was studied. The Au content in Au/CuO was also investigated by varying the Au content in Au/CuO. The catalysts were characterized by XRD, FTIR spectroscopy of pyridine adsorption, and TEM to study the role of Sn and the influence of different parameters for catalyst preparation. After the optimization of reaction parameters, the yield of methyl lactate from glycerol reached 59% at 363 K after reacting in 1.6 MPa of O2for 6 h.Keywords:glycerol;oxidation;methyl lactate;Sn-Beta;Au/CuO
研究领域:
催化化学
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生物质转化
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可持续化学
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DOI
高影响因子
RSC Advances
·
2014
·Vol. 5
·期 12
·9130-9137
·
IF 3.708
Jiahuan Lei,Yu Liu,Xinyu Wang,Pan Hu,Xinsheng Peng
Au nanoparticles/mesoporous CuO nanosheets were successfully synthesized by the assembly of negatively charged AuCl4−1 and positively charged CuO nanosheets using sodium citrate and thermal reduction, respectively. The structure and morphology were characterized in detail. Both the loading amount of Au nanoparticles and the performance were controlled by the reduction process. The resulting Au/CuO NSs exhibited good catalytic activity for CO oxidation and good non-enzymatic sensitivity for glucose.
研究领域:
材料科学
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化学
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生物传感
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催化反应
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DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2016
·Vol. 24
·期 3
·591-599
·
IF 1.385
Li Yanyan,Na Wei,Wang Hua,Gao Wengui
A series of Au–CuO/SBA-15 catalysts with 1–3 wt% Au and 30 wt% CuO were successfully prepared for CO 2 hydrogenation to methanol by chemical reduction and the following impregnation. The influence of Au content on the physicochemical properties of Au–CuO/SBA-15 catalysts was investigated in terms of ICP-AES, N 2 physisorption, XRD, TEM, N 2 O titration, XPS and H 2 –TPR technique. The results showed that the as-prepared Au–CuO/SBA-15 catalysts exhibited higher catalytic activity than CuO/SBA-15 catalyst. 2 % Au–CuO/SBA-15 catalyst showed the best catalytic activity with 13.5 % methanol selectivity and 24.2 % CO 2 conversion for CO 2 hydrogenation to methanol. The addition of Au NPs played an important role in improving the catalytic activity for CO 2 hydrogenation to methanol, which may be attributed to the interaction between Au and CuO.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 15
·12983-12990
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IF 2.22
Yang Bingqian,Yu Yawei,Qiao Jingyuan,Yuan Lefan,Hu Xiulan
Au/CuO nanoparticles with a size range of 20–40 nm directly synthesized by solution plasma method in water have been successfully applied to the non-enzyme detection of glucose. The electrocatalytic activities of Au/CuO nanoparticles toward glucose were evaluated in an alkaline solution by cyclic voltammetry and real-time current method. Research results demonstrate that the biosensor modified by Au/CuO catalysts has a fast reaction time (< 3 s) and low detection limit (0.22 µM). There are two specific linear ranges of 0.22 µM–1 mM and 3 mM–18 mM, with the sensitivities of 172.45 µA mM −1 cm −2 and 63.66 µA mM −1 cm −2 , respectively. Moreover, it also exhibited remarkable current response, good stability (87% after 50 days), superior reproducibility, and excellent selectivity in interfering species (such as D-fructose, ascorbic acid and uric acid). Therefore, the Au/CuO nanoparticles directly synthesized by solution plasma method can be implemented to the enzyme-free detection of glucose.
研究领域:
材料科学
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分析化学
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生物医学工程
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 45
·19206-19219
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IF 2.7
Li Cui,Fei Wang,Xiaoli Zhang,Yuewen Chen,Hai Liu,Yihu Ke,Yimin Wang,Xiya Zhang
The oxidation of glycerol to dihydroxyacetone (DHA) represents an efficient and economical process route. Although preparing Au/CuO catalysts from plant constituents has emerged as a novel approach for synthesizing biocompatible products, the complexity of plant constituents means that the active components still need to be clarified, making it challenging to control catalytic activity. In this study, we effectively separated and identified the active components of Syringa oblata Lindl. (SoL) leaf using column chromatography, and synthesized a series of Au/CuO catalysts from the different separated samples. Glycerol catalytic evaluation experiments showed that the S3 fraction, mainly consisting of phenolic substances, exhibited the highest catalytic activity, with a glycerol conversion rate of 86.6% and DHA selectivity of 82.0%, exceeding the activity of most current catalysts. A series of experiments and characterizations demonstrated the differences in reducibility and protective ability among the separated samples, and the preparation and glycerol reaction conditions for optimal performance are systematically optimized. This work provides in-depth insights into the preparation of catalysts using plant-based methods.
研究领域:
化学工程
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材料科学
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植物学
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DOI
高影响因子
NANOTECHNOLOGY
·
2023
·Vol. 34
·期 36
·365713
·
IF 3.5
Zhen Yuan,Hai Liu,Yimin Wang,Yihu Ke
Efficient conversion of glycerol to 1,3-dihydroxyacetone (DHA) is the affirmation and guarantee of the feasible development of biodiesel industry, but the biocompatibility of catalyst must be considered due to the wide application of DHA in food and medicine industries. In this work, an environmentally benign biosynthesis approach with Syringa oblata Lindl. (SoL) leaf extract was employed to fabricate Au/CuO catalysts for the oxidation of glycerol to DHA. The biosynthesized SoL-Au/CuO catalysts were characterized and the effects of plant extracts concentration, gold loading, calcination temperature and reaction conditions on the catalytic performance were systematically analyzed. High catalytic performance with glycerol conversion rate of 95.7% and DHA selectivity of 77.9% can be attained under optimum conditions. This work provides the first example of preparing biocompatible catalyst for the thermal catalytic oxidation of glycerol to DHA, which can not only reach efficient conversion of glycerol and selectivity to DHA, but also is simple, green, environmentally friendly, and promising.
研究领域:
催化化学
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环境科学
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生物技术
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Li Cui,Yimin Wang,Zhen Yuan,Xiaoli Zhang,Yuewen Chen,Xiya Zhang,Yihu Ke,Zhile Xiong,Hai Liu
Oxidizing glycerol (the primary by-product of biodiesel production) into 1,3-dihydroxyacetone (DHA) can significantly boost the economic feasibility of the biodiesel industry, but the catalyst deactivation remains a significant challenge. Herein, we present a novel approach that achieves a breakthrough in the conversion of glycerol to DHA through the integration of porous zeolite platform (bio-ZSM-5), derived from corn straw templates, with the traditional Au/CuO catalyst via mechanical milling. Under alkali-free conditions, the synthesized Au/CuO@bio-ZSM-5 catalyst exhibits remarkable glycerol conversion rate of 97.3% and DHA selectivity of 92.2%. Notably, the catalyst retains its efficacy with a glycerol conversion of 89.7% and DHA selectivity of 90.3% even after three regeneration cycles, surpassing all previously documented catalysts for this specific reaction. Serial characterizations and density-functional theory (DFT) calculations reveal that the incorporation of bio-ZSM-5 can modify the electronic structure of surface Au, reduce the adsorption energy of glycerol, and elevate the reduction temperature. This work is expected to provide an effective perspective for the design of catalysts with high cyclic stability.
研究领域:
化学工程
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材料科学
·
催化反应
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产品关联
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 61
·38486-38494
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IF 3.361
Jun-Hao Zhou,Chen-Yue Yuan,Ya-Li Zheng,Hai-Jing Yin,Kun Yuan,Xiao-Chen Sun,Ya-Wen Zhang
Tandem catalysis, in which a CO2-to-C2 process is divided into a CO2-to-CO/*CO step and a CO/*CO-to-C2 step, is promising for enhancing the C2 product selectivity when using Cu-based electrochemical CO2 reduction catalysts. In this work, a nanoporous hollow Au/CuO–CuO tandem catalyst was used for catalyzing the eCO2RR, which exhibited a C2 product FE of 52.8% at −1.0 V vs. RHE and a C2 product partial current density of 78.77 mA cm−2 at −1.5 V vs. RHE. In addition, the C2 product FE stably remained at over 40% over a wide potential range, from −1.0 V to −1.5 V. This superior performance was attributed to good matching in terms of the optimal working potential and charge-transfer resistance between CO/*CO-production sites (Au/CuO) and CO/*CO-reduction sites (CuO). This site pair matching effect ensured sufficient supplies of CO/*CO and electrons at CuO sites at the working potentials, thus dramatically enhancing the formation rate of C2 products.
研究领域:
电化学
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催化
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材料科学
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能量转换
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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CHEMICAL PHYSICS
·
2022
·Vol. 35
·期 3
·570-577
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IF 1.09
Lv Hong-wei,Li Quan-fu,Peng Hui-ling
In this study, the application of bovine serum albumin (BSA) as a carrier to glucose-sensitive materials for the detection of glucose was proposed. Au-CuO bimetallic nanoclusters (Au-CuO/BSA) were prepared using BSA as a template, the new sensing material (Au-CuO/BSA/MWCNTs) was synthesized by mixing with multi-walled carbon nanotubes (MWCNT) and applied to non-enzymatic electrochemical sensors to detect glucose stably and effectively under neutral condition. The scanning electron microscopy was used to investigate the morphology of the synthesized nanocomposite. The electrochemical properties of the sensor were studied by cyclic voltammetry. Glucose detection experiments show that Au-CuO/BSA/MWCNTs/Au electrode has good glucose detection ability, stability, accuracy, repeatability, and high selectivity in neutral environment. Unlike existing glucose-sensitive materials, due to the use of BSA, the composite material is firmly fixed to the electrode surface without a Nafion solution, which reduces the current blocking effect on the modified electrode. The composite materials can be effectively preserved for extremely long periods, higher than 80% activity is maintained at room temperature in a closed environment for 3 to 4 months, due to the special effects of BSA. In addition, the feasibility of using BSA in glucose-sensitive materials is confirmed.
研究领域:
生物化学
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材料科学
·
分析化学
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DOI
高影响因子
MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 8
·1-9
·
IF 6.408
Zhuang Zhenjing,Zhang Chunyan,Yu Zhengdi,Liu Wenyuan,Zhong Yajun,Zhang Jingyun,Xu Zhihui
CuO nanorods bearing Au nanoparticles (Au/CuO nanocomposites) were prepared by a solution-phase synthesis and exhibited efficient hydroquinone (HQ)-oxidase activity with good specificity. The Au/CuO nanocomposites effectively catalyzed the oxidation of colorless HQ to brown benzoquinone with an absorbance maximum at 376 nm but did not catalyze the conversions of catechol or resorcinol. Kinetic studies indicated that the Au/CuO nanocomposites exhibited a strong affinity for HQ, with a Michaelis–Menten constant of K m = 0.33 mM. Owing to the high catalytic activity and specificity, a strong color was observed at low concentrations of HQ. Quantitative measurement of HQ was performed via colorimetric analysis, which yielded a detection limit of 3 μM with a linear range of 5–200 μM. This colorimetric sensor was successfully applied to an HQ assay of real water samples with satisfactory results. Graphical abstract
研究领域:
分析化学
·
环境科学
·
纳米技术
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DOI
PubMed
高影响因子
CATALYSIS LETTERS
·
2026
·Vol. 156
·期 8
·220
·
IF 2.5
Shi Yinhu,Ma Jiping,Zhang Yunwei,Wang Shuwei,Wang Xinhong
The selective and sustainable production of methyl lactate from biomass-derived polyols remains a significant challenge due to the frequent requirement of homogeneous bases. Herein, an integrated Au/CuO catalyst is reported for the base-free oxidative esterification of 1,2-propanediol to methyl lactate. The Au/CuO catalyst exhibits superior catalytic performance compared with Au supported on other oxides, affording high conversion and selectivity under optimized conditions. Systematic studies reveal that moderate Au loading and reaction conditions are crucial for suppressing over-oxidation and C-C bond cleavage. Mechanistic investigations suggest that the reaction proceeds via parallel oxidation pathways involving both primary and secondary hydroxyl groups, while the Au-CuO interface plays a key role in regulating intermediate oxidation and stabilizing methyl lactate. This work highlights the importance of metal-oxide interfacial effects in base-free oxidative esterification and provides a sustainable route for methyl lactate production from renewable polyols. Graphical
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高影响因子
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