Frontiers of Chemical Science and Engineering最新文献_第3页

Insights into carbon-based materials for catalytic dehydrogenation of low-carbon alkanes and ethylbenzene 碳基材料在低碳烷烃和乙苯催化脱氢中的应用

IF 4.5 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2023-06-19 DOI: 10.1007/s11705-023-2328-6

Sijia Xing, Sixiang Zhai, Lei Chen, Huabin Yang, Z. Yuan

引用次数: 0

Durable and recyclable BiOBr/silk fibroin-cellulose acetate composite film for efficient photodegradation of dyes under visible light irradiation 耐用和可回收的BiOBr/丝素-醋酸纤维素复合膜，用于可见光下染料的有效光降解

IF 4.5 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2023-06-19 DOI: 10.1007/s11705-023-2323-y

Jialiang Xu, Jian Jian, Y. Dan, Jie Song, Lingxi Meng, Pei Deng, Weijie Sun, Yusheng Zhang, Jinhua Xiong, Zhengqiu Yuan, Hu Zhou

引用次数: 1

Insights into carbon-based materials for catalytic dehydrogenation of low-carbon alkanes and ethylbenzene 碳基材料用于低碳烷烃和乙苯催化脱氢的研究进展

IF 4.5 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2023-06-19 DOI: 10.1007/s11705-023-2328-6

Sijia Xing, Sixiang Zhai, Lei Chen, Huabin Yang, Zhong-Yong Yuan

{"title":"Insights into carbon-based materials for catalytic dehydrogenation of low-carbon alkanes and ethylbenzene","authors":"Sijia Xing, Sixiang Zhai, Lei Chen, Huabin Yang, Zhong-Yong Yuan","doi":"10.1007/s11705-023-2328-6","DOIUrl":"10.1007/s11705-023-2328-6","url":null,"abstract":"<div><p>Direct dehydrogenation with high selectivity and oxidative dehydrogenation with low thermal limit has been regarded as promising methods to solve the increasing demands of light olefins and styrene. Metal-based catalysts have shown remarkable performance for these reactions, such as Pt, CrO<sub><i>x</i></sub>, Co, ZrO<sub><i>x</i></sub>, Zn and V. Compared with metal-based catalysts, carbon materials with stable structure, rich pore texture and large surface area, are ideal platforms as the catalysts and the supports for dehydrogenation reactions. In this review, carbon materials applied in direct dehydrogenation and oxidative dehydrogenation reactions including ordered mesoporous carbon, carbon nanodiamond, carbon nanotubes, graphene and activated carbon, are summarized. A general introduction to the dehydrogenation mechanism and active sites of carbon catalysts is briefly presented to provide a deep understanding of the carbon-based materials used in dehydrogenation reactions. The unique structure of each carbon material is presented, and the diversified synthesis methods of carbon catalysts are clarified. The approaches for promoting the catalytic activity of carbon catalysts are elaborated with respect to preparation method optimization, suitable structure design and heteroatom doping. The regeneration mechanism of carbon-based catalysts is discussed for providing guidance on catalytic performance enhancement. In addition, carbon materials as the support of metal-based catalysts contribute to exploiting the excellent catalytic performance of catalysts due to superior structural characteristics. In the end, the challenges in current research and strategies for future improvements are proposed.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 11","pages":"1623 - 1648"},"PeriodicalIF":4.5,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71910042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Durable and recyclable BiOBr/silk fibroin-cellulose acetate composite film for efficient photodegradation of dyes under visible light irradiation 耐用可回收的BiOBr/丝素-醋酸纤维素复合膜在可见光照射下对染料的有效光降解

IF 4.5 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2023-06-19 DOI: 10.1007/s11705-023-2323-y

Jialiang Xu, Jian Jian, Yixiao Dan, Jie Song, Lingxi Meng, Pei Deng, Weijie Sun, Yusheng Zhang, Jinhua Xiong, Zhengqiu Yuan, Hu Zhou

{"title":"Durable and recyclable BiOBr/silk fibroin-cellulose acetate composite film for efficient photodegradation of dyes under visible light irradiation","authors":"Jialiang Xu, Jian Jian, Yixiao Dan, Jie Song, Lingxi Meng, Pei Deng, Weijie Sun, Yusheng Zhang, Jinhua Xiong, Zhengqiu Yuan, Hu Zhou","doi":"10.1007/s11705-023-2323-y","DOIUrl":"10.1007/s11705-023-2323-y","url":null,"abstract":"<div><p>A stable and recyclable of BiOBr/silk fibroin-cellulose acetate composite film was prepared by blending-wet phase transformation and <i>in situ</i> precipitate technology. The cellulose acetate film modified by silk fibroin formed a finger-shaped porous structure, which provided a large space for the uniform growth of BiOBr nanosheets and facilitated the shuttle flow of dyes in film. The morphology, phase structure, and optical properties of the composite films were characterized using various techniques, and their photocatalytic performance for dye wastewater was evaluated under visible light irradiation. Results showed that the BiOBr/SF-CA composite film exhibited efficient photocatalytic activity with 99.9% of rhodamine B degradation rate. Moreover, the composite film maintained high catalytic stability because Bi as the active species deposited on the film showed almost no loss. Finally, the possible photocatalytic mechanisms in the BiOBr/SF-CA composite film were speculated through radical-trapping experiments and electron spin resonance testing.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 11","pages":"1765 - 1775"},"PeriodicalIF":4.5,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71910041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Size-controllable synthesis of monodispersed nitrogen-doped carbon nanospheres from polydopamine for high-rate supercapacitors 高速率超级电容器用聚多巴胺单分散氮掺杂碳纳米球的尺寸可控合成

IF 4.5 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2023-06-19 DOI: 10.1007/s11705-023-2326-8

Ning Zhang, F. Gao, Hong Liu, Feng Wang, Ruliang Zhang, Qing Yu, Lei Liu

引用次数: 0

Enhanced permeability and biofouling mitigation of forward osmosis membranes via grafting graphene quantum dots 通过接枝石墨烯量子点增强正渗透膜的渗透性和减轻生物污垢

IF 4.5 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2023-06-19 DOI: 10.1007/s11705-023-2329-5

Nan Li, Yumeng Zhang, Peng Li, Bo Zhu, Wei Wang, Zhiwei Xu

{"title":"Enhanced permeability and biofouling mitigation of forward osmosis membranes via grafting graphene quantum dots","authors":"Nan Li, Yumeng Zhang, Peng Li, Bo Zhu, Wei Wang, Zhiwei Xu","doi":"10.1007/s11705-023-2329-5","DOIUrl":"10.1007/s11705-023-2329-5","url":null,"abstract":"<div><p>In this paper, graphene oxide quantum dots with amino groups (NH<sub>2</sub>-GOQDs) were tailored to the surface of a thin-film composite (TFC) membrane surface for optimizing forward osmosis (FO) membrane performance using the amide coupling reaction. The results jointly demonstrated hydrophilicity and surface roughness of the membrane enhanced after grafting NH<sub>2</sub>-GOQDs, leading to the optimized affinity and the contact area between the membrane and water molecules. Therefore, grafting of the membrane with a concentration of 100 ppm (TFC-100) exhibited excellent permeability performance (58.32 L·m<sup>−2</sup>·h<sup>−1</sup>) compared with TFC membrane (16.94 L·m<sup>−2</sup>·h<sup>−1</sup>). In the evaluation of static antibacterial properties of membranes, TFC-100 membrane destroyed the cell morphology of <i>Escherichia coli (E. coli)</i> and reduced the degree of bacterial adsorption. In the dynamic biofouling experiment, TFC-100 membrane showed a lower flux decline than TFC membrane. After the physical cleaning, the flux of TFC-100 membrane could recover to 96% of the initial flux, which was notably better than that of TFC membrane (63%). Additionally, the extended Derjaguin–Landau–Verwey–Overbeek analysis of the affinity between pollutants and membrane surface verified that NH<sub>2</sub>-GOQDs alleviates <i>E. coli</i> contamination of membrane. This work highlights the potential applications of NH<sub>2</sub>-GOQDs for optimizing permeability and biofouling mitigation of FO membranes.\u0000</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 10","pages":"1470 - 1483"},"PeriodicalIF":4.5,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41229194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ZnFe2O4/BiVO4 Z-scheme heterojunction for efficient visible-light photocatalytic degradation of ciprofloxacin ZnFe2O4/BiVO4-Z型异质结在可见光催化降解环丙沙星中的应用

IF 4.5 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2023-06-12 DOI: 10.1007/s11705-023-2322-z

Beibei Wang, Kejiang Qian, Weiping Yang, Wenjing An, Lan-Lan Lou, Shuangxi Liu, Kai Yu

{"title":"ZnFe2O4/BiVO4 Z-scheme heterojunction for efficient visible-light photocatalytic degradation of ciprofloxacin","authors":"Beibei Wang, Kejiang Qian, Weiping Yang, Wenjing An, Lan-Lan Lou, Shuangxi Liu, Kai Yu","doi":"10.1007/s11705-023-2322-z","DOIUrl":"10.1007/s11705-023-2322-z","url":null,"abstract":"<div><p>A novel Z-scheme ZnFe<sub>2</sub>O<sub>4</sub>/BiVO<sub>4</sub> heterojunction photocatalyst was successfully synthesized using a convenient solvothermal method and applied in the visible light photocatalytic degradation of ciprofloxacin, which is a typical antibiotic contaminant in wastewater. The heterostructure of as-synthesized catalysts was confirmed using X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy characterizations. Compared with the single-phase counterparts, ZnFe<sub>2</sub>O<sub>4</sub>/BiVO<sub>4</sub> demonstrated considerably enhanced photogenerated charge separation efficiencies because of the Z-scheme transfer mechanism of electrons between the composite photocatalysts. Consequently, the 30% ZnFe<sub>2</sub>O<sub>4</sub>/BiVO<sub>4</sub> catalyst afforded a degradation rate of up to 97% of 20 mg/L ciprofloxacin under 30 min of visible light irradiation with a total organic carbon removal rate of 50%, which is an excellent activity compared with ever reported BiVO<sub>4</sub>-based catalysts. In addition, the liquid chromatography-mass spectrometry and quantitative structure-activity relationships model analyses demonstrated that the toxicity of the intermediates was lower than that of the parent ciprofloxacin. Moreover, the as-synthesized ZnFe<sub>2</sub>O<sub>4</sub>/BiVO<sub>4</sub> heterojunctions were quite stable and could be reused at least four times. This study thus provides a promising Z-scheme heterojunction photocatalyst for the efficient removal and detoxication of antibiotic pollutants from wastewater.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 11","pages":"1728 - 1740"},"PeriodicalIF":4.5,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ZnFe2O4/BiVO4 Z-scheme heterojunction for efficient visible-light photocatalytic degradation of ciprofloxacin ZnFe2O4/BiVO4 Z-scheme异质结对环丙沙星的可见光催化降解

IF 4.5 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2023-06-12 DOI: 10.1007/s11705-023-2322-z

Beibei Wang, Kejiang Qian, Weiping Yang, Wenjing An, Lan-Lan Lou, Shuangxi Liu, Kai Yu

引用次数: 0

Enhancing the aromatic selectivity of cyclohexane aromatization by CO2 coupling CO2偶联提高环己烷芳构化反应的芳烃选择性

IF 4.5 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2023-06-12 DOI: 10.1007/s11705-023-2325-9

Xiangxiang Ren, Zhong-Pan Hu, Jingfeng Han, Yingxu Wei, Zhongmin Liu

{"title":"Enhancing the aromatic selectivity of cyclohexane aromatization by CO2 coupling","authors":"Xiangxiang Ren, Zhong-Pan Hu, Jingfeng Han, Yingxu Wei, Zhongmin Liu","doi":"10.1007/s11705-023-2325-9","DOIUrl":"10.1007/s11705-023-2325-9","url":null,"abstract":"<div><p>Improving the aromatic selectivity in the alkane aromatization process is of great importance for its practical utilization but challenge to make because the high H/C ratio of alkanes would lead to a serious hydrogen transfer process and a large amount of light alkanes. Herein, CO<sub>2</sub> is introduced into the cyclohexane conversion process on the HZSM-5 zeolite, which can improve the aromatic selectivity. By optimizing the reaction conditions, an improved aromatic (benzene, toluene, xylene, and C<sub>9+</sub>) selectivity of 48.2% can be obtained at the conditions of 2.7 MPa (CO<sub>2</sub>), 450 °C, and 1.7 h<sup>−1</sup>, which is better than that without CO<sub>2</sub> (aromatic selectivity = 43.2%). <i>In situ</i> transmission Fourier transform infrared spectroscopy spectra illustrate that many oxygenated chemical intermediates (e.g., carboxylic acid, anhydride, unsaturated aldehydes/ketones or ketene) would be formed during the cyclohexane conversion process in the presence of CO<sub>2</sub>. <sup>13</sup>C isotope labeling experimental results demonstrate that CO<sub>2</sub> can enter into the aromatics through the formation of oxygenated chemical intermediates and thereby improve the aromatic selectivity. This study may open a green, economic, and promising way to improve the aromatic selectivity for alkane aromatization process.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 11","pages":"1801 - 1808"},"PeriodicalIF":4.5,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

“Charging” the cigarette butt: heteroatomic porous carbon nanosheets with edge-induced topological defects for enhanced oxygen evolution performance “充电”烟头：具有边缘诱导拓扑缺陷的异原子多孔碳纳米片增强析氧性能

IF 4.5 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2023-06-12 DOI: 10.1007/s11705-023-2318-8

Qing-Hui Kong, Xian-Wei Lv, Jin-Tao Ren, Hao-Yu Wang, Xin-Lian Song, Feng Xu, Zhong-Yong Yuan

{"title":"“Charging” the cigarette butt: heteroatomic porous carbon nanosheets with edge-induced topological defects for enhanced oxygen evolution performance","authors":"Qing-Hui Kong, Xian-Wei Lv, Jin-Tao Ren, Hao-Yu Wang, Xin-Lian Song, Feng Xu, Zhong-Yong Yuan","doi":"10.1007/s11705-023-2318-8","DOIUrl":"10.1007/s11705-023-2318-8","url":null,"abstract":"<div><p>Owing to the complexity of electron transfer pathways, the sluggish oxygen evolution reaction process is defined as the bottleneck for the practical application of Zn-air batteries. In this effort, metal nanoparticles (Co, Ni, Fe, etc.) encapsulated within nitrogen-doped carbon materials with abundant edge sites were synthesized by one-step pyrolysis treatment using cigarette butts as raw materials, which can drastically accelerate the overall rate of oxygen evolution reaction by facilitating the adsorption of oxygenated intermediates by the edge-induced topological defects. The prepared catalyst of nitrogen-doped carbon porous nanosheets loaded with Co nanoparticles (Co@NC-500) exhibits enhanced catalytic activity toward oxygen evolution reaction, with a low overpotential of 350 mV at the current density of 10 mA·cm<sup>−2</sup>. Furthermore, the Zn-air battery assembled with Co@NC-500 catalyst demonstrates a desirable performance affording an open-circuit potential of 1.336 V and power density of 33.6 mW·cm<sup>−2</sup>, indicating considerable practical application potential.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"17 11","pages":"1755 - 1764"},"PeriodicalIF":4.5,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0