燃料化学学报最新文献

{"title":"Synthesis of small crystal NiY zeolites and their catalytic performance in hydrocracking","authors":"Jinxiao SUN,&nbsp;Xiaohan WANG,&nbsp;Qiang WEI,&nbsp;Yasong ZHOU","doi":"10.1016/S1872-5813(24)60432-9","DOIUrl":"https://doi.org/10.1016/S1872-5813(24)60432-9","url":null,"abstract":"<div><p>A series of small crystal Y-<em>x</em>Ni zeolites with different amounts of Ni doping were synthesized by <em>in-situ</em> introducing the Ni precursors during the synthesis, through which the active Ni metal was incorporated into the framework of the Y zeolites. With the mechanical mixture of Y-<em>x</em>Ni zeolites and amorphous silica-alumina (ASA) as the support, a series of Cat-<em>x</em>Ni catalysts were prepared through loading the Ni and W components by incipient wet impregnation and the catalytic performance of Cat-<em>x</em>Ni in the hydrocracking of <em>n</em>-hexadecane was then investigated. In addition, the effect of Ni doping on the physicochemical properties of Y zeolite and Cat-<em>x</em>Ni catalysts was elucidated with the help of scanning electron microscopy (SEM), X-ray diffraction (XRD), N₂-adsorption desorption, NH₃ temperature programmed desorption (NH₃-TPD), H₂ temperature programmed reduction (H₂-TPR), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and so on. The results indicate that Ni can replace Al to enter the framework of the Y zeolites. The incorporation of appropriate amount of Ni into the Y zeolites can increase their relative crystallinity and the number of Br⊘nsted and Lewis acid sites; however, excessive Ni incorporation is detrimental to the crystallization of Y zeolite and excessive non-framework Ni species will cover the surface Br⊘nsted acid sites. Moreover, Ni doping can weaken the metal-support interaction, increase the sulfation extent of the active metal and the stacking number and dispersion of the active NiWS phase, and then improve the matching between the metal and acid sites on the Cat-<em>x</em>Ni catalysts. As a results, in comparison with the counterpart Cat-0Ni catalyst, the Cat-<em>x</em>Ni catalysts display more Br⊘nsted acid sites and active NiWS sites as well as improved the synergy between the metal sites and acid sites, which can enhance the conversion of <em>n</em>-hexadecane whereas inhibit the over-cracking, and then booster the yield of the middle distillate products (C₈–C₁₂). In particular, for the <em>n</em>-hexadecane hydrocracking at 360 °C, the Cat-0.2Ni catalyst exhibits a C₈–C₁₂ product yield of 65.4%, with a much higher <em>n</em>-C₁₆ conversion than the Cat-0Ni counterpart. All these suggest that the pre-impregnation of active metal Ni on the Y zeolites can effectively regulate the balance between the hydrogenation and cracking performance and improve the catalytic activity and the yield of middle distillate products in the hydrocracking of paraffins.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 6","pages":"Pages 775-789"},"PeriodicalIF":0.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141164658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of preparation methods on the performance of InZr/SAPO-34 composite catalysts for CO2 hydrogenation to light olefins","authors":"Shuai GUO ,&nbsp;Likui FENG ,&nbsp;Zhiyong YU ,&nbsp;Di XU ,&nbsp;Kaidi LIU ,&nbsp;Xiaoning SONG ,&nbsp;Yijie CHENG ,&nbsp;Qiuyang CAO ,&nbsp;Guanghui WANG ,&nbsp;Mingyue DING","doi":"10.1016/S1872-5813(23)60433-0","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60433-0","url":null,"abstract":"<div><p>Light olefins are of great importance as chemical raw materials, and ethylene is a crucial symbol to evaluate the development level of petrochemical industry. Catalytic hydrogenation of CO₂ to light olefins is one of the most vital approaches to utilize CO₂ with high added valued. InZr/SAPO-34 composite catalyst shows prominent potential in research and application because of their high light olefins selectivity and high stability in CO₂ hydrogenation. In this study, the effects of different preparation methods of InZr/SAPO-34 composite catalyst for CO₂ hydrogenation to light olefins were studied in depth. The catalyst prepared by co-precipitation method showed the highest catalytic activity, and the catalyst prepared by sol-gel-precipitation method showed the highest light olefins selectivity. The structure-activity relationship of InZr/SAPO-34 catalysts were revealed by various characterization methods.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 6","pages":"Pages 790-799"},"PeriodicalIF":0.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141164653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photocatalytic promotion of benzylamine C-N coupling by oxygen vacancies in bismuth oxychloride@nanocellulose composites","authors":"Xiaoxia WANG,&nbsp;Long SUN,&nbsp;Li QIN,&nbsp;Jing SU,&nbsp;Jiajia WANG","doi":"10.1016/S1872-5813(24)60437-8","DOIUrl":"https://doi.org/10.1016/S1872-5813(24)60437-8","url":null,"abstract":"<div><p>In this study, a composite photocatalyst BiOCl@CNC was prepared by simple stirring with BiOCl at room temperature using nanocellulose (CNC) as a carrier. Comprehensive characterizations (XRD, FT-IR, SEM, TEM, XPS) reveal that the abundant hydroxyl groups in CNC can form strong hydrogen bonds with BiOCl, leading to the creation of numerous oxygen vacancies in the material and thereby significantly enhancing its visible light-driven photocatalytic performance. The performance of the BiOCl@CNC was evaluated using the C-N coupling reaction of benzylamine as the target reaction under visible light, and the underlying mechanism was investigated. The results show that the optimal reaction process is that 1.0 mmol of benzylamine and 20 mg of BiOCl@CNC are added to CH₃CN under an oxygen atmosphere to react for 20 h using a 30 W white LED lamp as the light source. In the substrate expansion experiments, the BiOCl@CNC exhibits remarkable adaptability and exceptional stability towards reactants with diverse substituents. The free radical capture experiments demonstrate that the electrons can effectively generate superoxide radicals in the presence of oxygen vacancies and subsequently form the ultimate product through amine cation radical intermediates. This study not only expands the application potential of Bi-based composite semiconductors but also presents novel insights for synthesizing N-benzylene butylamine.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 6","pages":"Pages 864-872"},"PeriodicalIF":0.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141164662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in preparing biomass-based 2,5-bis(hydroxymethyl)furan by catalytic transfer hydrogenation","authors":"LI Wei ,&nbsp;GONG Honghui ,&nbsp;SHI Xianlei","doi":"10.1016/S1872-5813(23)60403-7","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60403-7","url":null,"abstract":"<div><p>Biomass-based 2,5-bis(hydroxymethyl)furan (BHMF) is one of the important high value-added chemicals, which can be prepared from inexpensive and renewable carbohydrates through the way of catalytic conversion and selective hydrogenation, and as a widely used chemical intermediate and fuel precursor, it has unique advantages in improving the performance of traditional polyesters and synthesizing new biodegradable bio-based polyesters. In recent years, the research on the production of high value-added chemicals such as BHMF from carbohydrate has been attracting much attention from both academia and industry. However, cleanliness, high efficiency, high selectivity and low-cost remain key challenges in this area, especially for practical applications. In the process of BHMF production, the traditional hydrogenation method consumed a large amount of high-grade energy of hydrogen, and an excessive investment in infrastructure would be generated due to the security risks of higher pressure of hydrogen. On account of the advantages of catalytic transfer hydrogenation, the advances in selective hydrogenation to prepare BHMF using formic acid, alcohols and other types of hydrogen donors by the approach of catalytic transfer hydrogenation is systematically discussed in this review. In view of the features and problems of different types of hydrogen donors, catalysts and reaction processes during the catalytic transfer hydrogenation process, the effects of reaction conditions and process intensifications on the selectivity and yield of BHMF, and the merits and demerits of the reaction system were all investigated. On this basis, the future directions of new catalytic systems for preparation of BHMF by transfer hydrogenation is proposed, and the cleaner, more efficient and essential safety technologies for the production of BHMF is predicted, which will provide some scientific reference for the research and development of related catalytic systems in biomass conversion.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 5","pages":"Pages 735-755"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140822688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanism of heterogeneous reduction of NO over graphite-supported single-atom Fe catalyst: DFT study","authors":"ZHAO Yan ,&nbsp;LI Xiang ,&nbsp;HUANG Jinkai ,&nbsp;LI Xianchun ,&nbsp;ZHU Yaming ,&nbsp;WANG Huanran","doi":"10.1016/S1872-5813(23)60407-4","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60407-4","url":null,"abstract":"<div><p>The mechanism of nitrogen oxide (NO) reduction over graphite carbon-supported single-atom iron (Fe) catalyst (Fe/G) was investigated by density functional theory (DFT) and transition state theory (TST). The catalyst deactivation was also analyzed. The results revealed that the NO reduction, based on the Eley-Rideal (E-R) mechanism, underwent four stages including N₂O formation and release as well as N₂ formation and release. However, the NO reduction only involved two stages according to Langmuir-Hinshelwood (L-H) mechanism: N₂ formation and release. Furthermore, for the E-R mechanism, the rate-controlling step was NO reduction, where a NO molecule was adsorbed on an Fe atom with an N, O-down structure with energy barrier of 15.5 kJ/mol, lower than that of other paths. Energy barrier analysis indicated that the energy barrier for the reduction of reactive oxygen species was higher than that for the formation of N₂. Reactive oxygen species remaining on the surface of Fe atoms after NO decomposition inhibited the adsorption and reduction of NO, leading to catalyst deactivation due to the absence of active sites. The single-atom Fe species promoted the NO reduction. Kinetic analysis results suggested that, upon increasing the reaction temperature, the NO reduction rate increased more significantly than the reactive oxygen transfer rate.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 5","pages":"Pages 717-724"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly effective MFe2O4 (M=Zn, Mg, Cu and Mn) spinel catalysts for Fischer-Tropsch synthesis","authors":"WANG Chao ,&nbsp;CHEN Jiangang ,&nbsp;ZHU Huaqing ,&nbsp;ZHANG Wenshao ,&nbsp;BAI Hongbin ,&nbsp;ZHANG Juan","doi":"10.1016/S1872-5813(23)60406-2","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60406-2","url":null,"abstract":"<div><p>A series of spinel catalysts, including ZnFe₂O₄, MgFe₂O₄, CuFe₂O₄, and MnFe₂O₄, were prepared and applied to the Fischer-Tropsch synthesis (FTS). Zn, Mg, Cu and Mn easily form spinels with Fe. Among them, Zn and Mg can significantly maintain the spinel structure during the pretreatment and reaction, resulting in a low CO conversion. Cu and Mn are beneficial to the formation of iron carbide during the reaction, resulting in an apparent influence on FTS performance. ZnFe₂O₄ has little effect on the hydrocarbon distribution and the olefin/paraffin (O/P) ratio of C₂–C₄. MgFe₂O₄ exhibits low selectivity for C₅₊ hydrocarbons, and the selectivity of C= 2−C= 4 and the O/P ratio of C₂–C₄ in the product are increased due to the alkaline effect of Mg. Cu can promote the carbonization of the catalyst, so that CuFe₂O₄ has higher activity. Meanwhile, CuFe₂O₄ can significantly improve the selectivity of C₅₊ hydrocarbons. Moreover, Cu can promote the dissociation and activation of H₂, which is beneficial to the secondary hydrogenation of olefins, thereby reducing the selectivity of C= 2−C= 4 and the O/P ratio of C₂–C₄. Mn promotes carbonization during the reaction, but MnFe₂O₄ has little effect on the chain growth of hydrocarbon. However, Mn can promote the generation of a certain amount of <em>ɛ</em>-Fe₂C, which may explain the higher selectivity of C= 2−C= 4 and the O/P ratio of C₂–C₄ for MnFe₂O₄. All spinel catalysts exhibit low CO₂ selectivity, which meets the current green environmental protection requirements.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 5","pages":"Pages 667-676"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of porous materials by ultrasound-intensified acid leaching of high-carbon component in coal gasification fine slag","authors":"LI Cuicui ,&nbsp;HAN Rui ,&nbsp;ZHOU Anning ,&nbsp;ZHANG Ningning ,&nbsp;GUO Kaiqiang ,&nbsp;CHEN Heng ,&nbsp;CHEN Xiaoyi ,&nbsp;LI Zhen ,&nbsp;WANG Junzhe","doi":"10.1016/S1872-5813(23)60402-5","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60402-5","url":null,"abstract":"<div><p>Coal gasification fine slag is one of the by-products from clean and efficient utilization of coal, and its resource utilization is extremely urgent. In this work, a high carbon fraction with a fixed carbon content higher than 60% was obtained by simple sieving of gasification fine slag, from which a porous material was prepared by ultrasonic acid leaching method. The adsorption performance of porous materials, being used as treatment of radioactive iodine in nuclear wastewater, is characterized by iodine adsorption value. The effects of ultrasound time, ultrasound power, acid concentration, and temperature on the iodine adsorption performance and compositional structure of the porous materials were systematically investigated by combining the results of SEM, BET, XRD, and FT-IR. The mechanisms of ultrasound-enhanced acid leaching on compositional structure of residual carbon and migration and transformation laws of the ash constituents were explored and summarized. The results show that the porous material prepared under conditions of acid concentration of 4 mol/L, acid immersion temperature of 50 °C, ultrasonic power of 210 W, and ultrasonic time of 1.5 h has the best iodine adsorption performance of 468.53 mg/g, with a specific surface area of 474.97 m²/g, and possesses a rich pore structure with predominant mesopores. The order of each factor on the iodine adsorption performance is: sonication time &gt; acid concentration &gt; sonication power &gt; acid immersion temperature. The mechanism of ultrasonic enhanced acid leaching is that ultrasonic cavitation and mechanical wave action firstly enhance dissociation of carbon-ash adherent particles, thus making desorption of ash particles blocked in pore channels of the gasification slag to increase its connectivity; secondly, lead to generation of cracks on surface of the carbon and ash particles to enhance accessibility of inorganic components inside the carbon particles; and thirdly, enhance the acid leaching process by increasing mass transfer rate to strengthen leaching effect of inorganic components in the gasification slag.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 5","pages":"Pages 630-646"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced electro-catalytic activity of TNTs/SnO2-Sb electrode through the effect mechanism of TNTs architecture","authors":"YANG Lisha,&nbsp;GUO Yanming","doi":"10.1016/S1872-5813(23)60390-1","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60390-1","url":null,"abstract":"<div><p>The TiO₂ nanotubes arrays/SnO₂-Sb (TNTs/SnO₂-Sb) electrode is successfully fabricated using the solvothermal synthesis technique. Various architectures of TNTs are constructed by varying the anodization voltage and time, aiming to investigate their impact on the structural and electrochemical properties of the SnO₂-Sb electrode. The anodization voltage is identified as the primary influencing factor on the morphology and surface hydrophilia of TNTs arrays, which is evidenced by scanning electron microscopy (SEM) and contact angle testing. In contrast, the effect of anodization time is relatively small. SEM, X-ray diffraction (XRD), linear sweep voltammograms (LSV), and electrochemical impedance spectroscopy (EIS) results indicate that the morphology and crystal size of the catalytic coating, as well as the oxygen evolution potential of the electrode, are influenced by the pore size of TNTs arrays. The influencing mechanism of enhanced electrochemical activity by adjusting the architecture of TNTs arrays is investigated using X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), and hydroxyl radicals (·OH) generation test. The results reveal a higher concentration of oxygen vacancies on the sample with a compact and smaller particle coating, indicating the presence of more adsorbed oxygen species. Consequently, this enhances the generation capacity of active radicals for organic matter degradation. The electrode featuring TNTs arrays with a length of 950 nm and a pore diameter of 100 nm exhibits the most effective remediation of phenol-containing wastewater, achieving approximately 92% ± 4.6% removal after a duration of 2 h.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 5","pages":"Pages 687-697"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrocatalyst hydrogenation of lignol-derived compounds: Conversion regularity and product selectivity","authors":"WEI Dening ,&nbsp;TANG Hongbiao ,&nbsp;YANG Gaixiu ,&nbsp;YANG Juntao ,&nbsp;LI Ning ,&nbsp;CHEN Guanyi ,&nbsp;CHEN Chunxiang ,&nbsp;FENG Zhijie","doi":"10.1016/S1872-5813(23)60405-0","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60405-0","url":null,"abstract":"<div><p>Phenolic derivatives, crucial components of bio-oil, require thorough understanding of their electrocatalytic hydrogenation (ECH) properties for efficient bio-oil utilization. This study investigated guaiacol, a representative phenolic derivative in bio-oil, focusing on its ECH mechanism, conversion, and product selectivity under varied conditions (temperature: 40–80 °C, perchloric acid concentration: 0.2–1.0 mol/L, current intensity: ((–10)–(–150) mA). Additionally, this study also explored the influence of intermediate products (2-methoxycyclohexanone and cyclohexanone) on both the conversion rate and the selectivity of the products. The experiment had revealed that guaiacol's ECH conversion rate improved with higher temperature and current intensity, whereas an increase in perchloric acid concentration negatively affected the conversion. Significantly, the presence of intermediate products, especially 2-methoxycyclohexanone, markedly enhanced the ECH conversion of guaiacol. Investigating further into the ECH mechanism of other phenolic derivatives, including phenol, pyrocatechol, guaiacol eugenol, and vanillin, as well as their combination, revealed a trend where conversion rates inversely correlated with the complexity of the functional groups on the benzene ring. Specifically, phenol, with its simpler structure, showed the highest conversion rate at 89.34%, in stark contrast to vanillin which, owing to its more complex structure, exhibited the lowest at 46.79%. In our multi-component mixture studies, it was observed that synergistic and competitive interactions significantly alter ECH conversion rates, with some mixtures showing enhanced conversion rate indicative of synergistic effects.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 5","pages":"Pages 677-686"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photo-induced in-situ synthesis of Cu2O@C nanocomposite for efficient photocatalytic evolution of hydrogen","authors":"LI Na ,&nbsp;MAO Shuhong ,&nbsp;YAN Wenjun ,&nbsp;ZHANG Jing","doi":"10.1016/S1872-5813(23)60400-1","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60400-1","url":null,"abstract":"<div><p>Cuprous oxide (Cu₂O) is an ideal visible light catalyst owing to its narrow band gap, environmental benignity and abundant storage; however, the fast recombination of photogenerated charge carriers and poor stability of Cu₂O has impeded its application in photocatalysis. Herein, we demonstrate that Cu₂O@C nanocomposite can spontaneously evolve from a methanol aqueous solution containing cupric ions under the induction of irradiation. Compared with the traditional carbon coating method, the Cu₂O@C nanocomposite obtained by the photo-induced <em>in-situ</em> synthesis can reserve superior original characteristics of the semiconductor under mild reaction conditions, promote the charge transfer and enhance the separation efficiency of charge carriers; in addition, the carbon shells can also effectively prevent Cu₂O from photo-corrosion. As a result, the Cu₂O@C nanocomposite exhibits excellent photocatalytic activity in the hydrogen evolution in comparison with the Cu₂O particles; the H₂ evolution rate over the Cu₂O@C nanocomposite reaches 1.28 mmol/(g·h) under visible light, compared with the value of 0.065 mmol/(g·h) over Cu₂O. Moreover, the Cu₂O@C nanocomposite displays good cycle stability, viz., without any deactivation in the catalytic activity after five cycles.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 5","pages":"Pages 698-706"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}