Catalysis Letters最新文献

{"title":"Preparation and Electrochemical Properties of Nitrogen-Doped MXenes Porous Hydrogen Evolution Cathode Materials by Molten Salt Method","authors":"Jinjing Du,&nbsp;Yu Zhou,&nbsp;Xinxin Cui,&nbsp;Yuxiang Yangxuan,&nbsp;Qian Li,&nbsp;Xiao Feng,&nbsp;Jun Zhu,&nbsp;Heng Zuo","doi":"10.1007/s10562-025-05040-6","DOIUrl":"10.1007/s10562-025-05040-6","url":null,"abstract":"<div><p>In the domain of hydrogen evolution reaction (HER) cathode catalysts, MXenes-containing materials are considered to possess considerable potential owing to their unique two-dimensional layered architecture. Conversely, the production processes of these materials, together with the selection of diverse nitrogen doping strategies and the underlying mechanisms, remain subjects requiring further investigation. This experiment employed the molten salt method for the synthesis of MXenes. This approach is beneficial as it effectively mitigates the influence of fluorine groups on the electrochemical characteristics of MXenes. A study was conducted on the effects of doping with two distinct nitrogen sources: urea and lithium nitride. The microstructures and electrochemical characteristics were analyzed to ascertain the most effective preparation and nitrogen doping methods. The Ti₃AlC₂ precursor was specifically etched with CoCl₂ in a eutectic salt solution of KCl and LiCl to produce Ti₃C₂. Subsequently, lithium nitride was selected as the nitrogen source, resulting in the synthesis of MXenes with enhanced hydrogen evolution reaction performance. The studied HER cathode material exhibited a distinctly defined layered structure with significantly increased interlayer gap. This led to an increased surface area and a higher density of active sites. The electrochemical test findings indicated an overpotential of 82 millivolts at a current density of 10 milliamperes per square centimeter, with a Tafel slope of 120.4 millivolts per degree. The electrochemical impedance spectroscopy (EIS) analysis revealed that the series resistance (Rs) is 1.571 Ω, indicating a low value. The charge transfer resistance (Rct) was measured at 78.56 Ω, corroborating the superior performance. The material exhibited exceptional stability throughout the testing phase.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Novel Sm2O3 / MWCNT Nanocomposite as a Photocatalytic Application Against Orange G and Hydroquinone Pollutants","authors":"A. Kistan,&nbsp;G. Raja,&nbsp;R. Venkatesh,&nbsp;A. S. Prakaash","doi":"10.1007/s10562-025-05034-4","DOIUrl":"10.1007/s10562-025-05034-4","url":null,"abstract":"<div><p>By using a solvothermal preparation process, a multi-walled carbon nanotube photocatalyst (Sm₂O₃/MWCNT) was synthesises, which improved the photocatalytic efficiency of samarium oxide (Sm₂O₃) and revealed its catalytic mechanism. The crystalline phase and morphological structure of Sm₂O₃/MWCNTs were observed using X-ray powder diffraction spectroscopy (XRD), Raman spectra, Field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). X-ray photoelectron spectroscopy (XPS) revealed that the modification by MWCNTs resulted in modifications in functional groups on the surface and a binding energy shift of Sm and O. The catalytic performance of Sm₂O₃/MWCNT was enhanced in all of the characterisations. The Sm₂O₃/MWCNT-catalysed degradation routes of Orange G and Hydroquinone dyes were investigated as the target trace persistent pollutant. Throughout the end, preliminary studies were conducted to ascertain the extent to which pH, catalyst dosage, beginning dye concentration, and electrolytes affected catalyst efficiency in the process of dye degradation. Research on the reusability of the catalyst showed that it retained its original efficiency even after the third cycle of reuse.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of Hierarchical Structured Catalysts: SnO2-Modified TiO2 Nanotube Arrays Enabling Ultra-Low Overpotential Acidic Oxygen Evolution Reaction","authors":"Qingchen Lu,&nbsp;Xiaoyu Huang,&nbsp;Yaowen Zhang,&nbsp;Dayong Fan,&nbsp;Faming Han,&nbsp;Chandrasekaran Sundaram,&nbsp;Huidan Lu,&nbsp;Yongping Liu","doi":"10.1007/s10562-025-05037-1","DOIUrl":"10.1007/s10562-025-05037-1","url":null,"abstract":"<div><p>The construction of the strong oxid-support interaction (SOSI) between the support and the active component is crucial for regulating the atomic configuration and electronic structure of the catalyst. In this study, the electrocatalytic oxygen evolution reaction (OER) performance of IrO_x in acidic electrolytes was significantly enhanced by constructing a double intermediate layer of titanium dioxide nanotube array (TNT) and SnO₂. The overpotential of TNT/SnO₂/IrO_x at a current density of 10 mA cm^− 2 was 220 mV, which is 69 mV and 93 mV lower than that of directly loaded TNT/IrO_x (289 mV) and TNT/IrO₂ (313 mV), respectively. Additionally, the introduction of SnO₂ significantly improved the stability of the catalyst. After a 100 h static chronopotentiometry (CP) test at a current density of 10 mA cm^− 2, the potential change was only 18 mV, much lower than that of TNT/IrO₂ (175 mV) and TNT/IrO_x (50 mV). Through in-depth surface morphology and structure analysis, it was found that IrO_x is anchored on the SnO₂ mesolayer and uniformly dispersed. Furthermore, the TNT array has exhibits a strong interaction with IrOₓ, and the addition of the intermediate layer SnO₂ effectively stabilizes Ir, preventing its reduction. The results demonstrated that the synergistic effect of SnO₂ and TNT significantly enhanced the catalytic activity of IrO_x. In summary, this study successfully developed an efficient and stable acidic OER catalyst through multistage interface engineering design, providing a new solution for the industrial application of low-iridium supported catalysts.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>The SEM Diagram Shows the Actual Appearance cross-section of the Catalyst, that Is, the SnO₂/IrO_x Catalyst Is Directly Loaded on TNT</p></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-Pot Synthesis of N Doping Al2O3 Catalyst for Efficient Hydrolysis of COS","authors":"Jun Han,&nbsp;Xinyu Yang,&nbsp;Linbo Qin,&nbsp;Mufang Hu,&nbsp;Bo Zhao","doi":"10.1007/s10562-025-05021-9","DOIUrl":"10.1007/s10562-025-05021-9","url":null,"abstract":"<div><p>Catalytic hydrolysis was regarded as the most feasible technology of removing carbonyl sulfide (COS) from blast furnace gas (BFG) or coke oven gas (COG). However, the current hydrolysis catalysts were deactivated due to sulfur species deposition. In this paper, N doping Al₂O₃ catalysts were successfully synthesized by one-pot method, which could achieve 98% COS conversion efficiency and 90% H₂S selectivity under 70 °C after 24 h reaction. The characterization revealed that nitrogen doping could increase the specific surface area, pore size and pore volume of Al₂O₃ catalysts. Especially, the average pore diameter of N doping Al₂O₃ catalysts was broaden from 2 to 13 nm to 2–17 nm. Moreover, N doping was beneficial to pyridine nitrogen formation, which promoted Lewis basic sites and the number of hydroxyl groups. Thus, the active oxygen in the catalysts were consumed and sulfur species deposition was suppressed. COS conversion efficiency and lifetime of N doping Al₂O₃ catalysts were increased. This study provides a new COS hydrolysis catalyst with higher activity and stability, offering promising potential for the commercial application.</p></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Schottky Heterojunction of Core–Shell Cu/CuO/Cu2O for Efficient Photocatalytic Degradation","authors":"Ke Yang,&nbsp;Bo Zhou,&nbsp;Kun Dong,&nbsp;Yan Wu,&nbsp;Qu Huang,&nbsp;Jingbo Lv,&nbsp;Ziyi Wan,&nbsp;Mingzhu Yang","doi":"10.1007/s10562-025-05038-0","DOIUrl":"10.1007/s10562-025-05038-0","url":null,"abstract":"<div><p>With the acceleration of industrialization and urbanization, the treatment of organic pollutants in water bodies has become a global problem. Photocatalytic technology is regarded as an ideal solution due to its green and efficient characteristics. However, traditional powder catalysts have the problem of difficult recovery. Using copper foam as the substrate to load photocatalysts is a feasible solution. Cu/CuO/Cu₂O with a core–shell structure was prepared by a simple solvothermal method based on copper foam. Under visible light irradiation, the Cu/CuO/Cu₂O catalyst has a high catalytic efficiency for Congo red (95% within 180 min) and a significant adsorption and degradation ability for tetracycline hydrochloride. The results of the density functional theory calculation and electrochemical tests reveal that a Schottky heterojunction forms between Cu₂O and CuO, the band gap of Cu₂O is 0.57 eV, and the free energy of Cu/CuO/Cu₂O is 0.24 eV, close to 0 eV, revealing the ternary composite’s possibility to evolve hydrogen. The heterojunction generated by Cu₂O and CuO improves the material’s charge transport efficiency. Furthermore, this ternary composite based on copper foam easy to recycle and reuse, and can maintain nearly 90% degradation efficiency after 8 cycles. This concept offers a method for planning and building interfaces in nanocomposite structures.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabricating Zr-Al and Zr-Mn Supports for Fe-based Catalysts To Regulate CNTs Growth from Plastic Wastes","authors":"Jialiang Qi,&nbsp;Xu Hou,&nbsp;Xinyao Sun,&nbsp;Jing Huang,&nbsp;Li Yin,&nbsp;Tingting Cui","doi":"10.1007/s10562-025-05036-2","DOIUrl":"10.1007/s10562-025-05036-2","url":null,"abstract":"<div><p>Upgrading plastic wastes into high-value carbon materials such as carbon nanotubes (CNTs) is an efficient strategy for the sustainable development. Herein, Zr-Al and Zr-Mn supports with an atom ratio of 7:3 and 5:5 were prepared via the co-precipitation method using citric acid as the precipitant, and used to fabricate Fe-based catalysts (Fe/Zr7Al3, Fe/Zr5Al5, Fe/Zr7Mn3 and Fe/Zr5Mn5) via the impregnation method. Then, the Fe-based catalysts were used in CNTs synthesis from PE (polyethylene) via the thermo-catalytic process on a two-stage fixed reactor. The supports as well as the fresh and spent catalysts were characterized in detail by SEM, XRD, N₂ physisorption, H₂-TPR, TG-DSC, Raman, etc. It was found that CNTs yield was in an order of Fe/Zr5Al5 (451.0 mg/g) &gt; Fe/Zr7Al3 (367.8 mg/g) &gt; Fe/Zr7Mn3 (284.3 mg/g) &gt; Fe/Zr5Mn5 (51.6 mg/g). Compared with Fe/Zr5Al5 and Fe/Zr5Mn5, the CNTs obtained by Fe/Zr7Al3 and Fe/Zr7Mn3 exhibited the well-grown structure: The CNTs on Fe/Zr7Al3 was in an elongated and waved shape with smooth external surface and an average diameter of 30.5 nm; the CNTs on Fe/Zr7Mn3 was longer and straighter than that of Fe/Zr7Al3, and had a smoother external surface and a larger average diameter of 55.5 nm. In addition, the unique capability of Fe/Zr7Al3 and Fe/Zr7Mn3 was effective in regulating the morphology, quality and quantity of CNTs synthesis from n-hexane. This can be attributed to different crystal structure and reducibility of Zr-Al and Zr-Mn supports that tailored the metal-support interaction of Fe-based catalysts, which regulated the reaction pathways for hydrocarbon transformation, and thus CNTs growth with different morphology, quality and quantity.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrocatalytic Organic Dye Pollutants Degradation with Green Hydrogen Recovery using Nanoscale NiSe Catalysts","authors":"Michael Walsh,&nbsp;Jeannie Ziang Yie Tan,&nbsp;Sudhagar Pitchaimuthu","doi":"10.1007/s10562-025-05025-5","DOIUrl":"10.1007/s10562-025-05025-5","url":null,"abstract":"<div><p>This work investigates the potential for simultaneous water pollutant treatment and green H₂ generation through the use of a highly active catalyst material in the water electrolysis process. We synthesised nanoscale Ni₂Se₃ through a solvothermal method, analysing the crystallite structure through X-ray diffraction analysis. The electrochemical properties of as-synthesised Ni₂Se₃ nanoscale catalysts were studied by using both a freshwater and dyewater electrolyte. Interestingly, the dyewater displayed an increased electrocatalytic activity as a result of the organic pollutants oxidising. We demonstrated the feasibility of benchmarking the Ni₂Se₃ catalyst in methyl orange (model pollutant) dye pollutant degradation whilst simultaneously recovering hydrogen gas. The Ni₂Se₃-coated stainless steel anode resulted in 71.9% dye degradation over 180 min at 1.67 V vs RHE. Feasibility of hydrogen recovery during dye degradation process was examined. Interestingly, protons produced from dye degradation process at Ni₂Se₃ anode, further reduced at cathode which generated approximately 0.81 L cm⁻² of green hydrogen gas per day. This work explores an interesting investigation into the utilisation of a less expensive electrocatalyst to address the environmental clean-up and energy demand issues concurrently. Furthermore, it opens a circular economy pathway of recovering hydrogen gas from wastewater treatment.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10562-025-05025-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of a Novel Z-Scheme Ternary Photocatalyst of α-Fe2O3 Nanorods Decorated on MgO@g-C3N4 for Air Toluene Removal Under Visible Light by Studying its Antibacterial Properties","authors":"Rezvan Abedinloo,&nbsp;Abdulrahman Bahrami,&nbsp;Saeid Azizian,&nbsp;Majid Habibi Mohraz,&nbsp;Maryam Farhadian,&nbsp;Farshid Ghorbani Shahna,&nbsp;Farshid Ghorbani","doi":"10.1007/s10562-025-05028-2","DOIUrl":"10.1007/s10562-025-05028-2","url":null,"abstract":"&lt;div&gt;&lt;p&gt;The objective of this study is to synthesize a ternary α-Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/MgO@g-C&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt; nanocomposite and to utilize it for the removal of toluene from air flow under visible light irradiation. A new ternary α-Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/MgO@g-C&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt; catalyst Utilizing α-Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; Nanorod was synthesized via the impregnation–hydrothermal method. The synthesized catalysts were used for the photocatalytic removal of the toluene vapor in a reactor in visible light irradiation. The catalysts were characterized using FTIR, XRD, FE-SEM, EDS, UV-visible DRS, and BET techniques. The effects of inlet toluene concentration, airflow rate, relative humidity, and their interactions on the efficiency of toluene removal were examined using a Central Composite Design method. In addition, the antibacterial properties of the synthesized samples were also investigated. Compared to pristine and binary catalysts, the ternary of α-Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/MgO@g-C&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt; photocatalyst exhibited higher efficiency in toluene degradation. The highest removal efficiency rate was 40.2% at an airflow rate of 15 mL/min, a toluene concentration of 10 ppm and relative humidity of 43%, which is approximately 1.95 and 1.57 times better than pure g-C&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt; and α-Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;, respectively. The increased efficacy is probably related to the Z-scheme mechanism and the remarkable special surface area of the three catalysts. The inlet concentration of toluene had the greatest effect on removal efficiency, while relative RH had the least. CO&lt;sub&gt;2&lt;/sub&gt; selectivity for this composite was M = 98.6%, indicating that toluene is entirely oxidized to CO&lt;sub&gt;2&lt;/sub&gt; and water. This study shows that the α-Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/MgO@g-C&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt; photocatalyst demonstrates effective performance under visible light at low concentration and low airflow rate for removing toluene from air. In microbial tests, only MgO exhibited notable antibacterial properties, while none of the other catalysts demonstrated significant antibacterial effects. &lt;i&gt;The α-Fe&lt;/i&gt;&lt;sub&gt;&lt;i&gt;2&lt;/i&gt;&lt;/sub&gt;&lt;i&gt;O&lt;/i&gt;&lt;sub&gt;&lt;i&gt;3&lt;/i&gt;&lt;/sub&gt;&lt;i&gt;/MgO@g-C&lt;/i&gt;&lt;sub&gt;&lt;i&gt;3&lt;/i&gt;&lt;/sub&gt;&lt;i&gt;N&lt;/i&gt;&lt;sub&gt;&lt;i&gt;4&lt;/i&gt;&lt;/sub&gt;&lt;i&gt;composite is an efficient&lt;/i&gt;,&lt;i&gt; non-toxic&lt;/i&gt;,&lt;i&gt; and stable photocatalyst for toluene degradation at low concentrations and flow rates under visible light irradiation&lt;/i&gt;.&lt;/p&gt;&lt;h3&gt;Graphical abstract&lt;/h3&gt;&lt;div&gt;&lt;figure&gt;&lt;div&gt;&lt;div&gt;&lt;picture&gt;&lt;source&gt;&lt;img&gt;&lt;/source&gt;&lt;/picture&gt;&lt;/div&gt;&lt;div&gt;&lt;p&gt;Herein, we synthesized a ternary α-Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/MgO@g-C&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt; composite and utilized it for the removal of toluene from airflow under visible light in a continuous flow system. The ternary composite exhibited superior performance compared to the binary α-Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/g-C&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt; composite and pure α-Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; and g-C&lt;sub&gt;3&lt;/sub&gt;N&lt;","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10562-025-05028-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of Photocatalytic Performance of Ga2O3 Films with Different Thicknesses Under UVC Light","authors":"Ebru Şenadım Tüzemen","doi":"10.1007/s10562-025-05032-6","DOIUrl":"10.1007/s10562-025-05032-6","url":null,"abstract":"<div><p>Photocatalytic oxidation is a promising green technology for the degradation of toxic organic pollutants in water, offering an eco-friendly alternative that primarily generates harmless by-products such as CO₂ and H₂O. In this study, gallium oxide (Ga₂O₃) thin films with varying thicknesses were synthesized using RF magnetron sputtering to optimize their photocatalytic efficiency for environmental remediation. The films were structurally and optically characterized, revealing a clear correlation between film thickness and optical band gap. Notably, the band gap narrowed with increasing thickness, ranging from 5.13 to 4.95 eV for unannealed films, and from 5.03 to 4.91 eV for films annealed at 500 °C. According to the XRD results, diffraction peaks were observed at 35.9° and 63.78° in the 342.4 nm Ga₂O₃ film produced at 500 °C. These peaks correspond to the (111) and (403) planes of the β-Ga₂O₃ phase. Photocatalytic activity, evaluated through the degradation of organic pollutants under UVC illumination, reached its peak in the unannealed 126.1 nm film and the annealed 342.4 nm film. These results indicate that precise control of film thickness and thermal treatment can significantly enhance photocatalytic performance. The study confirms that Ga₂O₃ is a highly stable and effective photocatalyst, with strong potential for sustainable water purification and advanced optoelectronic applications such as UV photodetectors and solar-assisted catalytic systems.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of Quinoline-Dihydropyrimidines: A Synergistic Green Approach Using Magnetically Recoverable Catalysts in Aqueous Medium","authors":"Anirudh Sharma,&nbsp;Qudsiya Y. Tamboli,&nbsp;Nagesh Dhanaji Chavan,&nbsp;L. Jyothish Kumar,&nbsp;Sundaramoorthy Sarveswari,&nbsp;Kranti R. Zakde,&nbsp;Vijayaparthasarathi Vijayakumar","doi":"10.1007/s10562-025-05024-6","DOIUrl":"10.1007/s10562-025-05024-6","url":null,"abstract":"<div><p>The advancement of magnetic nanoparticles (MNPs) as catalyst and the exploration of their applications in aqueous medium signify a crucial aspect of green chemistry, facilitating environmentally friendly and sustainable catalytic processes. The 2-chloroquinoline based dihydropyrimidines (DHPMs) were synthesized using magnetically recoverable silver substituted zinc ferrite in water under green conditions with excellent yields. The advantages of the presently developed protocol are excellent yield, easy work-up procedure, lesser reaction duration, and dual-effect approach (water as green solvent, recyclable and reusable ferrite catalyst) to green synthesis.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><img></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}