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I-doped BiOCl Boosting Photocatalytic CO2 Methanation Activity of TiO2 Nanotube Arrays i掺杂BiOCl增强TiO2纳米管阵列光催化CO2甲烷化活性
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-09-12 DOI: 10.1007/s10562-025-05165-8
Jun Deng, Xin-Er Tang, Jiajun Du, Chang-An Zhou, Lin Xia, Xuemei Zhou
{"title":"I-doped BiOCl Boosting Photocatalytic CO2 Methanation Activity of TiO2 Nanotube Arrays","authors":"Jun Deng,&nbsp;Xin-Er Tang,&nbsp;Jiajun Du,&nbsp;Chang-An Zhou,&nbsp;Lin Xia,&nbsp;Xuemei Zhou","doi":"10.1007/s10562-025-05165-8","DOIUrl":"10.1007/s10562-025-05165-8","url":null,"abstract":"<div><p>Photocatalytic CO<sub>2</sub> methanation provides a sustainable approach for massive CO<sub>2</sub> conversion, where the protonation of carbon intermediates and electron transfer (eight electrons and four protons required from CO<sub>2</sub> to CH<sub>4</sub>) kinetics are essential. In this work, I-doped BiOCl on TiO<sub>2</sub> nanotube arrays (BiOCl-I/TNTs) are prepared, which gives a methane production rate of 2.8 × 10<sup>−3</sup> µmol·cm<sup>−2</sup>·h<sup>−1</sup>, that is nearly 5 times higher than TiO<sub>2</sub> (5.5 × 10<sup>−4</sup> µmol·cm<sup>−2</sup>·h<sup>−1</sup>). The selectivity towards methane production is 84.4% for BiOCl-I/TNTs, competing with hydrogen evolution reaction, showing nearly twice the increase compared to TiO<sub>2</sub>. The enhancement on the activity and selectivity is ascribed to high solar light absorption, and excited energetic band of I-BiOCl (-1.75 eV vs. NHE) that offers high reductive potential of electrons for CO<sub>2</sub> activation and reduction thermodynamically. Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) analysis demonstrates a Mixed pathway for methanation is favored on I-BiOCl with *COOH as activated states of CO<sub>2</sub>, where the reaction barrier is lower compared to conversion of CO<sub>2</sub> to bidentate adsorbed CO<sub>2</sub> (b-CO<sub>3</sub><sup>2−</sup>) or monodentate adsorbed CO<sub>2</sub> (m-CO<sub>3</sub><sup>2−</sup>) on bare TiO<sub>2</sub>, that can be stemmed from the water dissociation and oxidation ability of I-BiOCl, providing high density of protons to react with carbon intermediates. This work thus provides new insights on the methanation of CO<sub>2</sub> using BiOX heterojunctions.</p><h3>Graphical Abstract</h3><p>I-BiOCl/TNTs significantly enhances CO<sub>2</sub> methanation activity by high solar light absorption and excited virtual states under illumination that offers high reductive potential of electrons for CO<sub>2</sub> activation. The lowered energy barrier for CO<sub>2</sub> reduction pathway via *COOH intermediates, leading to high CH<sub>4</sub> selectivity and yield.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037141","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}
引用次数: 0
Synthesis and Characterization of Magnetic Cobalt-Doped Copper-Iron Nanoparticles for Hydrogen Gas Generation by Catalytic Hydrolysis of NaBH4 NaBH4催化水解制氢用磁性钴掺杂铜铁纳米颗粒的合成与表征
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-09-12 DOI: 10.1007/s10562-025-05168-5
Deniz Uzunoğlu Doğruyol, Mahmut Tuna Seçilmiş, Güllü Kaplan, Berfin Başak Aktaş, Ayla Özer
{"title":"Synthesis and Characterization of Magnetic Cobalt-Doped Copper-Iron Nanoparticles for Hydrogen Gas Generation by Catalytic Hydrolysis of NaBH4","authors":"Deniz Uzunoğlu Doğruyol,&nbsp;Mahmut Tuna Seçilmiş,&nbsp;Güllü Kaplan,&nbsp;Berfin Başak Aktaş,&nbsp;Ayla Özer","doi":"10.1007/s10562-025-05168-5","DOIUrl":"10.1007/s10562-025-05168-5","url":null,"abstract":"<div><p>The growing demand for sustainable energy has increased interest in hydrogen as an alternative fuel. Among the various hydrogen generation methods, the catalytic hydrolysis of sodium borohydride (NaBH<sub>4</sub>) is promising due to its high hydrogen yield and mild conditions. In this study, cobalt-doped copper-iron nanoparticles (Co@Cu-Fe NPs) were synthesized via a wet impregnation method and utilized as catalysts for NaBH<sub>4</sub> hydrolysis. The structural and physicochemical characterizations were performed using SEM, EDX, XRD, XPS, FT-IR, VSM, TGA, and BET. Under optimized conditions (8 wt% Co, 2.1 M NaBH<sub>4</sub>, 0.025 g catalyst, 25 °C), a high hydrogen generation rate of 1033 mL/min·g<sub>cat</sub> was achieved. Kinetic and thermodynamic analyses showed a 1.17th-order reaction with an activation energy of 59.75 kJ/mol. The mechanism followed the Langmuir–Hinshelwood model, involving stepwise hydroxyl substitution of BH<sub>4</sub>⁻. Co@Cu-Fe NPs exhibited competitive performance and magnetic recyclability, making them efficient and cost-effective catalysts for hydrogen production.</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 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037142","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}
引用次数: 0
Synthesis of Novel BiOBr Photocatalyst with Three Distinct Morphologies for the Photodegradation of Rhodamine B Dye 三种不同形态新型生物obr光催化剂的合成及其光降解罗丹明B染料的研究
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-09-11 DOI: 10.1007/s10562-025-05160-z
Shehbaz Ahmed, Liping Feng, Ruotong Ban, Zhilin Chen
{"title":"Synthesis of Novel BiOBr Photocatalyst with Three Distinct Morphologies for the Photodegradation of Rhodamine B Dye","authors":"Shehbaz Ahmed,&nbsp;Liping Feng,&nbsp;Ruotong Ban,&nbsp;Zhilin Chen","doi":"10.1007/s10562-025-05160-z","DOIUrl":"10.1007/s10562-025-05160-z","url":null,"abstract":"<div><p>Photocatalysis is a promising alternative to conventional wastewater treatment technologies. BiOBr materials have been extensively investigated for photocatalytic degradation of Rhodamine B (RhB), yet research on morphology regulation and corresponding catalytic performance remains insufficient. In this study, BiOBr with distinct morphologies, including nanoflowers, nanosheets, and nanocoral-like nanostructures, was successfully synthesized through pH adjustment during solvothermal synthesis under identical experimental conditions. This morphology regulation simultaneously modified the thickness of BiOBr nanomaterials. Experimental results demonstrate that BiOBr nanosheets synthesized under weakly acidic conditions exhibit superior light absorption range and charge carrier separation efficiency compared to nanoflower and nanocoral-like counterparts. The BiOBr nanosheets synthesized at pH 6, with a rate constant 0.04977 min⁻<sup>1</sup> exhibit excellent photocatalytic activity in the degradation of rhodamine B dye under visible light, higher than BiOBr nanoflowers and coral-like structures. This work provides fundamental insights into morphology-dependent photocatalytic mechanisms and proposes a practical strategy for developing efficient BiOBr-based photocatalytic degradation materials.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div><p>Photocatalytic mechanism of BiOBr nanoflowers under sunlight, showing charge separation, redox potentials, and pollutant degradation.</p></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037136","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}
引用次数: 0
Au Cluster-Decorated CeO2 for High-Efficiency Photothermal Catalytic Reduction of CO2 to CH4 金簇修饰CeO2高效光热催化还原CO2制CH4
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-09-09 DOI: 10.1007/s10562-025-05155-w
Changjun You, Junhai Wang, Yuan Yin, Boyi Yang, Yitao Si, Jiancheng Zhou
{"title":"Au Cluster-Decorated CeO2 for High-Efficiency Photothermal Catalytic Reduction of CO2 to CH4","authors":"Changjun You,&nbsp;Junhai Wang,&nbsp;Yuan Yin,&nbsp;Boyi Yang,&nbsp;Yitao Si,&nbsp;Jiancheng Zhou","doi":"10.1007/s10562-025-05155-w","DOIUrl":"10.1007/s10562-025-05155-w","url":null,"abstract":"<div><p>Photothermal catalytic CO<sub>2</sub> conversion into chemical fuels is of economic value, yet it faces the challenges of low efficiency and instability. To address these issues, this study developed a solar-light-driven catalysis system using Au<sub>8</sub>/CeO<sub>2</sub> and concentrated irradiation to enhance CO<sub>2</sub> conversion performance. This system contributes to a significant solar-to-chemical energy conversion efficiency improvement from 0.12 to 0.35‰. Simultaneously, the CH<sub>4</sub> production rate was improved by 21.7-fold (from 12.9 to 280.2 μmol g<sup>−1</sup> h<sup>−1</sup>) compared to the benchmark CeO<sub>2</sub> photocatalyst. During the reaction, Au clusters demonstrated enhanced light absorption capacity and elevated surface temperature of the photocatalyst, which increased charge carrier concentration, up-shifted the Fermi level, and reduced apparent activation energy. These effects synergistically promoted reaction efficiency. This catalysis system offers an efficient and sustainable approach for solar-driven CO<sub>2</sub> conversion, presenting promising potential for practical applications in renewable energy utilization.</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 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011909","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}
引用次数: 0
Synergistic Effect of Iron Doping and Oxide Hybridization Enables Enhanced Low-Temperature NH3-SCR Performance of Manganese Oxide Catalyst 铁掺杂和氧化物杂化的协同作用增强了锰氧化物催化剂的低温NH3-SCR性能
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-09-05 DOI: 10.1007/s10562-025-05146-x
Xuewen Li, Yaru Li, Menglin Wang, Can Wang, Wenxian Jing, Lisheng Fang, Yonghua Hu, Yundong Liang, Xianbiao Wang
{"title":"Synergistic Effect of Iron Doping and Oxide Hybridization Enables Enhanced Low-Temperature NH3-SCR Performance of Manganese Oxide Catalyst","authors":"Xuewen Li,&nbsp;Yaru Li,&nbsp;Menglin Wang,&nbsp;Can Wang,&nbsp;Wenxian Jing,&nbsp;Lisheng Fang,&nbsp;Yonghua Hu,&nbsp;Yundong Liang,&nbsp;Xianbiao Wang","doi":"10.1007/s10562-025-05146-x","DOIUrl":"10.1007/s10562-025-05146-x","url":null,"abstract":"<div><p>Manganese oxides (MnO<sub>x</sub>) catalysts are promising for low-temperature ammonia-selective catalytic reduction (NH₃-SCR), however, the limited N₂ selectivity and the narrow operational temperature range remain challenges. To address these issues, we developed a method involving impregnation doping and high-temperature calcination to hybridize Mn₂O₃ with iron lattice and oxide. This hybrid catalyst maintains a NO<sub>x</sub> conversion rate above 90% within the broad temperature window of 175–300 °C, while achieving N₂ selectivity above 99%. The as prepared Fe-Mn (0.15) exhibits spherical morphology with Fe and Mn uniformly distributed. Through XPS, XAFS, H₂-TPR, NH₃-TPD and catalytic activity tests, we verified that lattice iron doping slightly reduces the reducibility of the catalyst and enhances low-temperature activity (100–200 °C) by increasing Lewis acid sites. Meanwhile, the Fe₂O₃ domains promote high-temperature performance (200–300 °C) by enriching surface oxygen species and Bronsted acid sites. These synergistic effect regulates both the acidic and redox properties of the catalyst, facilitating NH<sub>3</sub> activation while suppressing over-oxidation, leading to superior NH<sub>3</sub>-SCR performance. Furthermore, in situ DRIFTS measurements confirmed that the reaction proceeds predominantly via a Langmuir-Hinshelwood (L-H) mechanism. This work reveals the synergistic effects of Fe lattice doping and Fe₂O₃ composite on MnO<sub>x</sub>, offering new insights for developing advanced low-temperature catalysts.</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 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990496","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}
引用次数: 0
Study on the Influence of Ni2+ Doping on the Photocatalytic Performance of ZnGa2O4 Ni2+掺杂对ZnGa2O4光催化性能影响的研究
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-09-05 DOI: 10.1007/s10562-025-05139-w
Yue Zu, Jiahao Ye, Zixuan Shi, Hongna Cheng, Zihan Wang, Ziyue Zhang, Diao Zhang, Zuotao Liu, Yi Shen, Fengfeng Li
{"title":"Study on the Influence of Ni2+ Doping on the Photocatalytic Performance of ZnGa2O4","authors":"Yue Zu,&nbsp;Jiahao Ye,&nbsp;Zixuan Shi,&nbsp;Hongna Cheng,&nbsp;Zihan Wang,&nbsp;Ziyue Zhang,&nbsp;Diao Zhang,&nbsp;Zuotao Liu,&nbsp;Yi Shen,&nbsp;Fengfeng Li","doi":"10.1007/s10562-025-05139-w","DOIUrl":"10.1007/s10562-025-05139-w","url":null,"abstract":"<div><p>The pursuit of photocatalysts is a crucial endeavor in the field of green chemistry with the growing environmental hazards caused by pollutants and organic dyes. Photocatalytic process serves as a cornerstone in addressing urgent environmental challenges, encompassing tasks such as hydrogen generation through water splitting, the reduction of pollutants, and the decomposition of organic dyes. Since d<sup>10</sup> electronic configuration semiconductors allow higher mobility of photoexcited electrons, among them Zinc gallate has become a research hotspot because it is a typical spinel compound with two d<sup>10</sup> configuration cations. This study specifically investigates the photocatalytic activity of ZnGa<sub>2</sub>O<sub>4</sub> in the decomposition of Rhodamine B and the photolysis of water, which are critical for environmental remediation. Despite the promising potential of ZnGa<sub>2</sub>O<sub>4</sub> in photocatalysis, its wide bandgap presents limitations to light absorption efficiency. In order to solve the above problems, doping Nickel ion with a + 2 charge into ZnGa<sub>2</sub>O<sub>4</sub> to modify it becomes a key strategy, as it can bring additional energy levels to enhance the separation of photogenerated electron-hole pairs, which achieves the result of improving the photocatalytic efficiency, and may also lead to a wider spectral response range and improve the photocatalytic performance of the material in the visible region. Although the relevant research reports on ZnGa<sub>2</sub>O<sub>4</sub> are beginning to take shape, further exploration is still needed, especially regarding the shortening of the ZnGa<sub>2</sub>O<sub>4</sub> bandgap width, with detailed mechanistic insights presented. This study addresses this issue by providing a comprehensive analysis. Ni<sup>2+</sup>-doped ZnGa<sub>2</sub>O<sub>4</sub> photocatalytic materials were prepared hydrothermally. The characterization technique to confirm the enhanced inherent photocatalytic properties of ZnGa<sub>2</sub>O<sub>4</sub> is then further explained. Finally, an overview of the main challenges facing the field is given and potential directions for future research are highlighted.</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 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990497","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}
引用次数: 0
The Effect of Iron Additive Incorporation Mode on the Fischer–Tropsch Synthesis Performance of Alumina-Supported Cobalt Catalysts 铁添加剂掺入方式对铝负载钴催化剂费托合成性能的影响
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-09-03 DOI: 10.1007/s10562-025-05159-6
Yixuan Li, Yuanli Xiang, Xinyan Ai, Yuhua Zhang, Yanxi Zhao, Chengchao Liu, Jinlin Li
{"title":"The Effect of Iron Additive Incorporation Mode on the Fischer–Tropsch Synthesis Performance of Alumina-Supported Cobalt Catalysts","authors":"Yixuan Li,&nbsp;Yuanli Xiang,&nbsp;Xinyan Ai,&nbsp;Yuhua Zhang,&nbsp;Yanxi Zhao,&nbsp;Chengchao Liu,&nbsp;Jinlin Li","doi":"10.1007/s10562-025-05159-6","DOIUrl":"10.1007/s10562-025-05159-6","url":null,"abstract":"<div><p>Co-Fe bimetallic catalysts have attracted increasing attention in the field of Fischer–Tropsch synthesis (FTS). In this study, cobalt was supplied in the form of Co<sub>3</sub>O<sub>4</sub> nanoparticles, and three different methods of iron (Fe) incorporation were employed: (1) Fe modification of the Al<sub>2</sub>O<sub>3</sub> support prior to Co<sub>3</sub>O<sub>4</sub> loading (Co/Fe-Al<sub>2</sub>O<sub>3</sub>), (2) co-loading of Fe and Co<sub>3</sub>O<sub>4</sub> (CoFe/Al<sub>2</sub>O<sub>3</sub>), and (3) Fe modification of Co<sub>3</sub>O<sub>4</sub> prior to loading (Co-Fe/Al<sub>2</sub>O<sub>3</sub>). These model catalysts were used to investigate the interactions between Co, Fe and the support and their impact on the catalytic activity and product selectivity of FTS. The results showed that the addition of Fe promotes cobalt reduction, modifies H<sub>2</sub> and CO adsorption properties and regulates catalytic performance. Compared with Co/Al<sub>2</sub>O<sub>3</sub>, Co/Fe-Al<sub>2</sub>O<sub>3</sub> exhibited the best reducibility and significantly reduced CH<sub>4</sub> selectivity from 19.2 to 11.2%. However, its CO adsorption weakened, decreasing CO conversion from 25.3 to 21.4%. Co-Fe/Al<sub>2</sub>O<sub>3</sub> showed enhanced H<sub>2</sub> and CO adsorption, increasing CO conversion by 18.9%. These findings demonstrate that the location of Fe affects the metal-support interaction, reducibility and adsorption activation abilities of the Co catalyst, ultimately altering FTS activity and selectivity.</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 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144929357","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}
引用次数: 0
Mo2N Enhanced Fenton-Like Process: Role of Mo Reducibility and N Adsorption Mo2N增强类fenton工艺:Mo还原性和N吸附的作用
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-09-03 DOI: 10.1007/s10562-025-05150-1
Shiqi Chen, Zhixuan Huang, Wentao He, Xinyu Wang, Zhiwei Yang, Jing Zhang
{"title":"Mo2N Enhanced Fenton-Like Process: Role of Mo Reducibility and N Adsorption","authors":"Shiqi Chen,&nbsp;Zhixuan Huang,&nbsp;Wentao He,&nbsp;Xinyu Wang,&nbsp;Zhiwei Yang,&nbsp;Jing Zhang","doi":"10.1007/s10562-025-05150-1","DOIUrl":"10.1007/s10562-025-05150-1","url":null,"abstract":"<div><p>Molybdenum nitride, because of the strong metal-support interaction between nitrogen and the metal, exhibits activity superior to that of bare metals, demonstrating its effectiveness as a co-catalyst to address the slow kinetics of the iron reduction in the Fenton process. Here, we introduced Mo<sub>2</sub>N as a co-catalyst to accelerate the cycles of Fe<sup>3+</sup>/Fe<sup>2+</sup> within a Fenton-like system consisting of Fe<sup>3+</sup> and H<sub>2</sub>O<sub>2</sub>, thereby enhancing the activation of hydrogen peroxide to generate reactive oxygen species (ROS). The system demonstrates excellent recyclability and stability. XPS spectroscopic analyses reveal that Mo(III) and Mo(IV) species on the Mo<sub>2</sub>N surface are capable of reducing free Fe(III), while FTIR analyses show nitrogen (N) and nitrogen oxide (NO<sub>x</sub>) facilitate the adsorption and coordination of iron. Both homogeneous and heterogeneous reduced iron species are active in the activation of H<sub>2</sub>O<sub>2</sub>. EPR spectroscopy further confirms that the primary ROS generated are hydroxyl radicals (·OH) and superoxide anions (·O<sub>2</sub><sup>−</sup>). This study not only underscores the feasibility of Mo<sub>2</sub>N-based Fenton-like systems but also provides a new strategy for promoting the practical application of Fenton chemistry.</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 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144929358","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}
引用次数: 0
Selective Catalytic Oxidation of Methanol on Pt-modified Cu/SSZ-13 Zeolites: A Strategy to Change the Catalytic Performance by Impregnation Sequential pt改性Cu/SSZ-13沸石选择性催化氧化甲醇:通过浸渍顺序改变催化性能的策略
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-09-03 DOI: 10.1007/s10562-025-05162-x
Qingliang Zeng, Zhitao Han, Tingjun Liu, Shoujun Zhang, Shaoqin Sheng, Liangzheng Lin, Junhao Jing, Sihan Yin
{"title":"Selective Catalytic Oxidation of Methanol on Pt-modified Cu/SSZ-13 Zeolites: A Strategy to Change the Catalytic Performance by Impregnation Sequential","authors":"Qingliang Zeng,&nbsp;Zhitao Han,&nbsp;Tingjun Liu,&nbsp;Shoujun Zhang,&nbsp;Shaoqin Sheng,&nbsp;Liangzheng Lin,&nbsp;Junhao Jing,&nbsp;Sihan Yin","doi":"10.1007/s10562-025-05162-x","DOIUrl":"10.1007/s10562-025-05162-x","url":null,"abstract":"<div><p>The use of methanol as an alternative fuel for marine diesel engines increases unregulated CH<sub>3</sub>OH emissions. A series of Pt-modified Cu/SSZ-13 catalysts were prepared using different impregnation method, which selectively catalyzed oxidation of CH<sub>3</sub>OH (CH<sub>3</sub>OH-SCO) to CO<sub>2</sub> and H<sub>2</sub>O. Activity tests showed that Cu/Pt/SSZ-13 catalyst (Pt impregnated first, followed by Cu) displayed exceptional CH<sub>3</sub>OH-SCO performance, achieving 100% methanol conversion at 150 °C with negligible CO and HCHO byproduct formation (&lt; 5 ppm) across the tested temperature range. Additionally, Cu/Pt/SSZ-13 catalyst exhibited excellent SO<sub>2</sub> resistance and high synergistic activity for simultaneous CH<sub>3</sub>OH and NO<sub><i>x</i></sub> removal. Characterization results demonstrated that Cu/Pt/SSZ-13 catalyst exhibited larger pore size, higher specific surface area, abundant strong alkaline site density and elevated surface-adsorbed oxygen (O<sub><i>ads</i></sub>) proportion. It was originated from the preferential introduction of Pt and subsequent doping of Cu enhanced the synergistic interaction at the interface of PtO<sub><i>x</i></sub> and CuO species, which facilitated the rapid migration of reactive oxygen species, thus accelerating the methanol dehydrogenation and deep oxidation. In-situ DRIFTS results indicated that Cu/Pt/SSZ-13 inhibited the deposition of formate while promoting the rapid conversion of intermediates such as formaldehyde and formic acid to CO<sub>2</sub>.</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 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144929356","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}
引用次数: 0
Low-Cost Microalgae-Templated CdS Composite for CO2 Utilization: Dye Sensitization of Phycobiliproteins and Carbon Dioxide Reduction 用于CO2利用的低成本微藻模板CdS复合材料:藻胆蛋白的染料敏化和二氧化碳还原
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-08-30 DOI: 10.1007/s10562-025-05138-x
Wenke Zhang, Yuantao Chen, Wei Zhang, Yu Xiao, Haibo Mao
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