Pub Date : 2026-01-08DOI: 10.1016/j.cattod.2026.115683
Xinxin Tian , Chenyu Lv , Qinqin Mao , Peizhu Xu , Lixin Li , Xinhu Liang , Jun Li , Lili Han
Direct formic acid fuel cells (DFAFCs) have attracted considerable attention due to their high energy density and environmental benefits; however, their commercial application is hindered by the low activity, poor stability, and CO poisoning susceptibility of conventional Pd-based anode catalysts. In this study, we develop a facile and green aqueous synthesis strategy for fabricating ultrafine α-phase palladium hydride nanoparticles supported on carbon (α-PdH/C) through a combination of sonochemical and wet chemical reduction methods. The as-prepared α-PdH/C catalyst exhibits a uniform particle size of 3.62 ± 0.17 nm and a high electrochemical surface area of 131.28 m2 g‒1. It achieves a superior mass activity of 3.68 A mg‒1 for the formic acid oxidation reaction (FAOR), which is 3.35 times higher than that of Pd/C, along with significantly enhanced durability, showing negligible activity decay after 1000 cycles. In situ spectroscopic studies reveal that the FAOR reaction follows the formate pathways with negligible CO generation, a behavior attributed to the tensile strain induced by interstitial hydrogen atoms. This work provides an efficient Pd-based catalyst with remarkable performance and offers new insights into the design of advanced anodic electrocatalysts for DFAFCs.
直接甲酸燃料电池（dafcs）因其高能量密度和环境效益而受到广泛关注；然而，传统的钯基阳极催化剂活性低、稳定性差、CO中毒易感性等问题阻碍了它们的商业应用。在这项研究中，我们开发了一种简单、绿色的水合成策略，通过声化学和湿化学还原相结合的方法，制备了碳负载的超细α-相氢化钯纳米颗粒（α-PdH/C）。制备的α-PdH/C催化剂粒径均匀，为3.62 ±0.17 nm，电化学表面积高达131.28 m2 g-1。在甲酸氧化反应（FAOR）中，它的质量活性达到3.68 a mg-1，是Pd/C的3.35倍，并且耐久性显著提高，1000次循环后活性衰减可以忽略。原位光谱研究表明，FAOR反应遵循甲酸途径，CO的产生可以忽略，这一行为归因于间隙氢原子引起的拉伸应变。本研究提供了一种高效性能优异的pd基催化剂，为dafcs的先进阳极电催化剂的设计提供了新的见解。
{"title":"A facile synthesis of α-phase palladium hydride ultrafine nanoparticles for accelerated formic acid electrooxidation","authors":"Xinxin Tian , Chenyu Lv , Qinqin Mao , Peizhu Xu , Lixin Li , Xinhu Liang , Jun Li , Lili Han","doi":"10.1016/j.cattod.2026.115683","DOIUrl":"10.1016/j.cattod.2026.115683","url":null,"abstract":"<div><div>Direct formic acid fuel cells (DFAFCs) have attracted considerable attention due to their high energy density and environmental benefits; however, their commercial application is hindered by the low activity, poor stability, and CO poisoning susceptibility of conventional Pd-based anode catalysts. In this study, we develop a facile and green aqueous synthesis strategy for fabricating ultrafine α-phase palladium hydride nanoparticles supported on carbon (α-PdH/C) through a combination of sonochemical and wet chemical reduction methods. The as-prepared α-PdH/C catalyst exhibits a uniform particle size of 3.62 ± 0.17 nm and a high electrochemical surface area of 131.28 m<sup>2</sup> g<sup>‒1</sup>. It achieves a superior mass activity of 3.68 A mg<sup>‒1</sup> for the formic acid oxidation reaction (FAOR), which is 3.35 times higher than that of Pd/C, along with significantly enhanced durability, showing negligible activity decay after 1000 cycles. <em>In situ</em> spectroscopic studies reveal that the FAOR reaction follows the formate pathways with negligible CO generation, a behavior attributed to the tensile strain induced by interstitial hydrogen atoms. This work provides an efficient Pd-based catalyst with remarkable performance and offers new insights into the design of advanced anodic electrocatalysts for DFAFCs.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"466 ","pages":"Article 115683"},"PeriodicalIF":5.3,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-08DOI: 10.1016/j.cattod.2026.115681
Lili Jiang, Minmin Yan, Jingjin Duan, Shen Chen
Electrocatalytic oxygen reduction for the production of hydrogen peroxide (H2O2) represents a highly promising decentralized and sustainable synthesis approach, offering a viable alternative to the conventional anthraquinone process. Utilizing air directly as an oxygen source has the potential to further reduce both raw material costs and operational complexity; however, significant technical challenges remain to be addressed. This review systematically summarizes recent advances in the field of electrocatalytic H2O2 synthesis via air reduction. First, based on current research, a theoretical comparison is provided between air and pure oxygen as oxygen sources. Subsequently, the article discusses various catalysts specifically designed for air-based oxygen reduction, along with progress in optimizing reaction systems. The objective of this work is to offer insights into the development of efficient electrocatalytic systems for direct air-to-H2O2 conversion, while also outlining key challenges and future research directions in this emerging field.
{"title":"Direct two-electron air electrofixation","authors":"Lili Jiang, Minmin Yan, Jingjin Duan, Shen Chen","doi":"10.1016/j.cattod.2026.115681","DOIUrl":"10.1016/j.cattod.2026.115681","url":null,"abstract":"<div><div>Electrocatalytic oxygen reduction for the production of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) represents a highly promising decentralized and sustainable synthesis approach, offering a viable alternative to the conventional anthraquinone process. Utilizing air directly as an oxygen source has the potential to further reduce both raw material costs and operational complexity; however, significant technical challenges remain to be addressed. This review systematically summarizes recent advances in the field of electrocatalytic H<sub>2</sub>O<sub>2</sub> synthesis via air reduction. First, based on current research, a theoretical comparison is provided between air and pure oxygen as oxygen sources. Subsequently, the article discusses various catalysts specifically designed for air-based oxygen reduction, along with progress in optimizing reaction systems. The objective of this work is to offer insights into the development of efficient electrocatalytic systems for direct air-to-H<sub>2</sub>O<sub>2</sub> conversion, while also outlining key challenges and future research directions in this emerging field.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"466 ","pages":"Article 115681"},"PeriodicalIF":5.3,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-08DOI: 10.1016/j.cattod.2026.115684
I. Agirrezabal-Telleria, J. Requies
{"title":"Preface for “New trends in catalysis for clean energy and sustainable chemistry”","authors":"I. Agirrezabal-Telleria, J. Requies","doi":"10.1016/j.cattod.2026.115684","DOIUrl":"10.1016/j.cattod.2026.115684","url":null,"abstract":"","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"466 ","pages":"Article 115684"},"PeriodicalIF":5.3,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-07DOI: 10.1016/j.cattod.2026.115680
Longzhou Ren , Wenjing Song , Fuhui Yang , Yeqiang Du , Liancheng Bing , Qinqin Zhang , Fang Wang , Guangjian Wang , Dezhi Han
Hydrodesulfurization (HDS) technology remains the primary industrial method for removing sulfur-containing compounds from petroleum-derived fuels, ensuring compliance with increasingly stringent environmental regulations. The catalyst support plays a critical role in determining its performance. While γ-Al2O3 is widely used as the HDS support, it suffers from issues such as low metal loading capacity, strong metal-support interaction, and low HDS efficiency. Carbon-based materials, with high surface area, tunable porosity and surface properties, relatively weak metal-support interaction, and easy recycling of active metals, offer promising alternatives. This review systematically summarizes the recent progress in HDS catalysts prepared using various carbon-based materials, including activated carbon and its derivatives, mesoporous carbon, carbon black composites, carbon nanotubes, carbon nanofibers, graphene and its derivatives, and carbon-containing composites. The relationships between support structure and catalytic performance are analyzed, along with future prospects and challenges. This review aims to guide the future design of high-efficiency HDS catalysts with carbon-based materials as supports.
{"title":"Carbon-based materials as supports for hydrodesulfurization catalysts: Recent progress and future prospects","authors":"Longzhou Ren , Wenjing Song , Fuhui Yang , Yeqiang Du , Liancheng Bing , Qinqin Zhang , Fang Wang , Guangjian Wang , Dezhi Han","doi":"10.1016/j.cattod.2026.115680","DOIUrl":"10.1016/j.cattod.2026.115680","url":null,"abstract":"<div><div>Hydrodesulfurization (HDS) technology remains the primary industrial method for removing sulfur-containing compounds from petroleum-derived fuels, ensuring compliance with increasingly stringent environmental regulations. The catalyst support plays a critical role in determining its performance. While γ-Al<sub>2</sub>O<sub>3</sub> is widely used as the HDS support, it suffers from issues such as low metal loading capacity, strong metal-support interaction, and low HDS efficiency. Carbon-based materials, with high surface area, tunable porosity and surface properties, relatively weak metal-support interaction, and easy recycling of active metals, offer promising alternatives. This review systematically summarizes the recent progress in HDS catalysts prepared using various carbon-based materials, including activated carbon and its derivatives, mesoporous carbon, carbon black composites, carbon nanotubes, carbon nanofibers, graphene and its derivatives, and carbon-containing composites. The relationships between support structure and catalytic performance are analyzed, along with future prospects and challenges. This review aims to guide the future design of high-efficiency HDS catalysts with carbon-based materials as supports.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"466 ","pages":"Article 115680"},"PeriodicalIF":5.3,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The dual crises of plastic waste accumulation and wastewater contamination by toxic dyes demand sustainable, low-cost solutions. In this study, a plastic waste-derived polymeric composite, incorporating Multani Mitti (PWPA-MM), was fabricated through a simple one-step process and evaluated against a conventional ZnO photocatalyst for the photodegradation of the toxic dye Methylene Blue (MB). The PWPA-MM achieved 99.8 % dye removal at neutral pH (7) within 105 min, outperforming ZnO (89.56 % under identical conditions), with a degradation rate constant nearly 1.5 times higher. The FESEM confirmed its porous morphology, negative surface charge (-28.1 mV zeta potential), and a reduced band gap of 2.52 eV, which together enhanced charge separation and reactive species generation. Significantly, PWPA-MM reduced COD and BOD by more than 90 %, demonstrating its real wastewater treatment potential. Unlike conventional nanomaterials, this composite provides a circular economy pathway by valorising non-biodegradable plastic waste into a functional photocatalyst support. The findings establish PWPA-MM as a cost-effective and eco-friendly alternative to metal oxide nanomaterials, offering scalability and practical applications in industrial dye effluent treatment while addressing plastic waste management challenges simultaneously.
{"title":"Upcycling plastic waste into polymeric composites with multani mitti for sustainable photodegradation of methylene blue: A comparative study with ZnO and Pzc evaluation","authors":"Agrima Singh , Megha Vijay , Deepa Sharma , Purnima Jain , Sapana Jadoun , Nirmala Kumari Jangid","doi":"10.1016/j.cattod.2026.115678","DOIUrl":"10.1016/j.cattod.2026.115678","url":null,"abstract":"<div><div>The dual crises of plastic waste accumulation and wastewater contamination by toxic dyes demand sustainable, low-cost solutions. In this study, a plastic waste-derived polymeric composite, incorporating Multani Mitti (PWPA-MM), was fabricated through a simple one-step process and evaluated against a conventional ZnO photocatalyst for the photodegradation of the toxic dye Methylene Blue (MB). The PWPA-MM achieved 99.8 % dye removal at neutral pH (7) within 105 min, outperforming ZnO (89.56 % under identical conditions), with a degradation rate constant nearly 1.5 times higher. The FESEM confirmed its porous morphology, negative surface charge (-28.1 mV zeta potential), and a reduced band gap of 2.52 eV, which together enhanced charge separation and reactive species generation. Significantly, PWPA-MM reduced COD and BOD by more than 90 %, demonstrating its real wastewater treatment potential. Unlike conventional nanomaterials, this composite provides a circular economy pathway by valorising non-biodegradable plastic waste into a functional photocatalyst support. The findings establish PWPA-MM as a cost-effective and eco-friendly alternative to metal oxide nanomaterials, offering scalability and practical applications in industrial dye effluent treatment while addressing plastic waste management challenges simultaneously.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"466 ","pages":"Article 115678"},"PeriodicalIF":5.3,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-03DOI: 10.1016/j.cattod.2026.115679
Harshita Shrivastav , Harpreet Kaur , Sanjeev Kumar , Dharmesh Sur , Shima Sadaf , Ramandeep Kaur , Chandra Kumar , Payal Patial , Mohammed Awad , Mir Waqas Alam
This study introduces a novel, sustainable approach for the synthesis of Titanium dioxide nanoparticles (TiO₂ NPs), utilizing Dracaena reflexa (DR) leaf extract as a biogenic source of reducing and capping agents, for the first time. X-ray diffraction (XRD) analysis confirmed the anatase phase with an average crystallite size of 8.89 nm. UV-Vis spectroscopy revealed a strong absorption peak at 250 nm and an optical band gap of 3.63 eV, which suggested the material’s potential for UV-driven photocatalytic applications. Gas chromatography-mass spectra (GC-MS) of DR plant extract have revealed the presence of various phytochemical compounds and their class. Fourier-transform infrared (FTIR) analysis showed interactions between the plant extract and TiO₂, with phytochemicals playing a key role in nanoparticle formation. Field emission scanning electron microscopy (FESEM) images revealed spherical nanoparticles with minimal agglomeration. Energy-dispersive X-ray spectroscopy (EDS) and elemental mapping confirmed the presence of Ti and O. Thermogravimetric analysis (TGA) showed that the mass stabilized above 550 °C, with nearly 89 wt% retained at 800 °C. Brunauer-Emmett-Teller (BET) surface area analysis indicated a high specific surface area of 250.606 m²/g, ideal for photocatalytic applications. This exceptionally high surface area of DR/TiO₂ NPs represents a remarkable achievement. The present study demonstrates an exceptional 99 % degradation of Methyl Orange (MO) dye within just 90 min under UV light using DR/TiO₂ as a photocatalyst. Additionally, the order of influence of scavengers on the photodegradation mechanism is found to be h+ > •OH > O₂⁻•. The complete degradation mechanism is elucidated by GC-MS analysis of the dye. DR/TiO₂ NPs exhibited superior antibacterial activity against S. aureus and E. coli, with clearly defined inhibition zones increasing in size at higher concentrations. Thus, the present results depicted the successful green synthesis of TiO₂ NPs, making them suitable for environmental remediation, wastewater treatment, and biomedical applications.
{"title":"A new horizon in green synthesis for metal oxides: Dracaena reflexa-derived TiO₂ nanoparticles for photocatalytic activity and antibacterial application","authors":"Harshita Shrivastav , Harpreet Kaur , Sanjeev Kumar , Dharmesh Sur , Shima Sadaf , Ramandeep Kaur , Chandra Kumar , Payal Patial , Mohammed Awad , Mir Waqas Alam","doi":"10.1016/j.cattod.2026.115679","DOIUrl":"10.1016/j.cattod.2026.115679","url":null,"abstract":"<div><div>This study introduces a novel, sustainable approach for the synthesis of Titanium dioxide nanoparticles (TiO₂ NPs), utilizing <em>Dracaena reflexa</em> (<em>DR</em>) leaf extract as a biogenic source of reducing and capping agents, for the first time. X-ray diffraction (XRD) analysis confirmed the anatase phase with an average crystallite size of 8.89 nm. UV-Vis spectroscopy revealed a strong absorption peak at 250 nm and an optical band gap of 3.63 eV, which suggested the material’s potential for UV-driven photocatalytic applications. Gas chromatography-mass spectra (GC-MS) of <em>DR</em> plant extract have revealed the presence of various phytochemical compounds and their class. Fourier-transform infrared (FTIR) analysis showed interactions between the plant extract and TiO₂, with phytochemicals playing a key role in nanoparticle formation. Field emission scanning electron microscopy (FESEM) images revealed spherical nanoparticles with minimal agglomeration. Energy-dispersive X-ray spectroscopy (EDS) and elemental mapping confirmed the presence of Ti and O. Thermogravimetric analysis (TGA) showed that the mass stabilized above 550 °C, with nearly 89 wt% retained at 800 °C. Brunauer-Emmett-Teller (BET) surface area analysis indicated a high specific surface area of 250.606 m²/g, ideal for photocatalytic applications. This exceptionally high surface area of <em>DR</em>/TiO₂ NPs represents a remarkable achievement. The present study demonstrates an exceptional 99 % degradation of Methyl Orange (MO) dye within just 90 min under UV light using <em>DR</em>/TiO₂ as a photocatalyst. Additionally, the order of influence of scavengers on the photodegradation mechanism is found to be h<sup>+</sup> > •OH > O₂⁻•. The complete degradation mechanism is elucidated by GC-MS analysis of the dye. <em>DR</em>/TiO₂ NPs exhibited superior antibacterial activity against <em>S. aureus</em> and <em>E. coli</em>, with clearly defined inhibition zones increasing in size at higher concentrations. Thus, the present results depicted the successful green synthesis of TiO₂ NPs, making them suitable for environmental remediation, wastewater treatment, and biomedical applications.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"466 ","pages":"Article 115679"},"PeriodicalIF":5.3,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-03DOI: 10.1016/j.cattod.2026.115677
Erna Frida , Syahrul Humaidi , Ferry Rahmat Astianta Bukit , Bunga Fisikanta Bukit , Agus Wedi Pratama , Firda Aulya Syamani , Nurdin Bukit , Istiqomah Rahmawati , Noureddine El Messaoudi , Salah Knani
This study investigates the synergistic influence of oil palm boiler ash (OPBA) and titanium dioxide (TiO2) fillers on the photocatalytic performance of polycaprolactone (PCL)-based nanocomposites for the degradation of methylene blue (MB) dye under UV irradiation. Nanocomposites with varying loadings of OPBA and TiO2 were fabricated and systematically characterized using SEM-EDX, XRD, and FTIR. SEM micrographs revealed a rough surface morphology with inhomogeneous dispersion and agglomeration of OPBA particles within the PCL matrix. XRD analysis showed that increasing TiO2 content reduced the crystallite size, with the highest TiO₂ loading yielding the smallest crystallite size (24.72 nm), compared to the TiO₂-free sample (37.55 nm). FTIR spectra confirmed the presence of Ti–O–Ti and Ti–O–C bonds, indicating successful incorporation of TiO2 into the composite. Photocatalytic tests demonstrated that the PCL/OPBA/TiO2 nanocomposite achieved 86.61 % MB degradation within 30 h under UV light. Notably, even the TiO2-free PCL/OPBA composite exhibited measurable photocatalytic activity, highlighting the intrinsic photocatalytic potential of waste-derived OPBA. Biodegradability assessments further indicated mass loss across all samples, confirming their environmental compatibility. These findings underscore the promising role of OPBA as a sustainable photocatalytic enhancer and reveal a synergistic effect between OPBA and TiO2 in boosting the dye degradation efficiency of PCL-based nanocomposites, offering a viable, eco-friendly approach for advanced wastewater treatment applications.
{"title":"Synergistic effect of oil palm boiler ash and TiO2 as hybrid fillers in biodegradable polycaprolactone-based nanocomposites for enhanced photocatalytic degradation of methylene blue","authors":"Erna Frida , Syahrul Humaidi , Ferry Rahmat Astianta Bukit , Bunga Fisikanta Bukit , Agus Wedi Pratama , Firda Aulya Syamani , Nurdin Bukit , Istiqomah Rahmawati , Noureddine El Messaoudi , Salah Knani","doi":"10.1016/j.cattod.2026.115677","DOIUrl":"10.1016/j.cattod.2026.115677","url":null,"abstract":"<div><div>This study investigates the synergistic influence of oil palm boiler ash (OPBA) and titanium dioxide (TiO<sub>2</sub>) fillers on the photocatalytic performance of polycaprolactone (PCL)-based nanocomposites for the degradation of methylene blue (MB) dye under UV irradiation. Nanocomposites with varying loadings of OPBA and TiO<sub>2</sub> were fabricated and systematically characterized using SEM-EDX, XRD, and FTIR. SEM micrographs revealed a rough surface morphology with inhomogeneous dispersion and agglomeration of OPBA particles within the PCL matrix. XRD analysis showed that increasing TiO<sub>2</sub> content reduced the crystallite size, with the highest TiO₂ loading yielding the smallest crystallite size (24.72 nm), compared to the TiO₂-free sample (37.55 nm). FTIR spectra confirmed the presence of Ti–O–Ti and Ti–O–C bonds, indicating successful incorporation of TiO<sub>2</sub> into the composite. Photocatalytic tests demonstrated that the PCL/OPBA/TiO<sub>2</sub> nanocomposite achieved 86.61 % MB degradation within 30 h under UV light. Notably, even the TiO<sub>2</sub>-free PCL/OPBA composite exhibited measurable photocatalytic activity, highlighting the intrinsic photocatalytic potential of waste-derived OPBA. Biodegradability assessments further indicated mass loss across all samples, confirming their environmental compatibility. These findings underscore the promising role of OPBA as a sustainable photocatalytic enhancer and reveal a synergistic effect between OPBA and TiO<sub>2</sub> in boosting the dye degradation efficiency of PCL-based nanocomposites, offering a viable, eco-friendly approach for advanced wastewater treatment applications.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"466 ","pages":"Article 115677"},"PeriodicalIF":5.3,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-29DOI: 10.1016/j.cattod.2025.115676
Guang-Rong Ding , Hua Xin , Ye Zhang , Kuan-Rong Xue , Sheng-Dong Yang , Yong-Gang Wang , Feng-Shou Xiao
Poly(ethylene naphthalate) (PEN) is a high-performance engineering polyester with critical applications in multiple fields such as precision packaging and aerospace systems. Nevertheless, its industrial-scale implementation remains constrained by the high production costs of its crucial precursor, 2,6-dimethylnaphthalene (2,6-DMN). This review has comprehensively summarized the preparation methods for 2,6-DMN, which are categorized into direct extraction and catalytic synthesis. Direct extraction achieved high-purity 2,6-DMN from coal/petroleum-derived oils via multi-stage purification cascades. Catalytic synthesis techniques are divided into four distinct pathways: (i) o-xylene alkenylation with butadiene, (ii) p-xylene/C4 olefin coupling, (iii) toluene acylation, and (iv) naphthalene (NAPH)/2-methylnaphthalene (2-MN) methylation. Among these, zeolite-catalyzed alkylation of NAPH/2-MN with methanol demonstrated compelling industrial potential due to its cost-effective feedstocks and simplified process. We further highlight mechanistic insights into alkylation pathways and reactant diffusion dynamics, which have driven intensive research into the design of zeolite catalysts, particularly the regulation of acidity and pore architecture to enhance shape-selectivity. Using representative zeolites (HZSM-5, HZSM-12, SAPO-11) as model systems, we critically evaluated structure-activity relationships in catalyst modification strategies, including acid site density modulation, mesoporosity introduction and surface passivation, along with their corresponding impact on methylation performance. Finally, four strategic research priorities are proposed to advance next-generation catalysts for scalable and economically sustainable 2,6-DMN production.
{"title":"Recent advances in the preparation of 2,6-dimethylnaphthalene","authors":"Guang-Rong Ding , Hua Xin , Ye Zhang , Kuan-Rong Xue , Sheng-Dong Yang , Yong-Gang Wang , Feng-Shou Xiao","doi":"10.1016/j.cattod.2025.115676","DOIUrl":"10.1016/j.cattod.2025.115676","url":null,"abstract":"<div><div>Poly(ethylene naphthalate) (PEN) is a high-performance engineering polyester with critical applications in multiple fields such as precision packaging and aerospace systems. Nevertheless, its industrial-scale implementation remains constrained by the high production costs of its crucial precursor, 2,6-dimethylnaphthalene (2,6-DMN). This review has comprehensively summarized the preparation methods for 2,6-DMN, which are categorized into direct extraction and catalytic synthesis. Direct extraction achieved high-purity 2,6-DMN from coal/petroleum-derived oils via multi-stage purification cascades. Catalytic synthesis techniques are divided into four distinct pathways: (i) <em>o</em>-xylene alkenylation with butadiene, (ii) <em>p</em>-xylene/C<sub>4</sub> olefin coupling, (iii) toluene acylation, and (iv) naphthalene (NAPH)/2-methylnaphthalene (2-MN) methylation. Among these, zeolite-catalyzed alkylation of NAPH/2-MN with methanol demonstrated compelling industrial potential due to its cost-effective feedstocks and simplified process. We further highlight mechanistic insights into alkylation pathways and reactant diffusion dynamics, which have driven intensive research into the design of zeolite catalysts, particularly the regulation of acidity and pore architecture to enhance shape-selectivity. Using representative zeolites (HZSM-5, HZSM-12, SAPO-11) as model systems, we critically evaluated structure-activity relationships in catalyst modification strategies, including acid site density modulation, mesoporosity introduction and surface passivation, along with their corresponding impact on methylation performance. Finally, four strategic research priorities are proposed to advance next-generation catalysts for scalable and economically sustainable 2,6-DMN production.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"466 ","pages":"Article 115676"},"PeriodicalIF":5.3,"publicationDate":"2025-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-27DOI: 10.1016/j.cattod.2025.115672
Pengfei Guo , Jinfei Lu , Meng Liu , Nanfang Tang , Zhijie Wu , Lu Lin , Wenhao Luo
The reductive amination of furfural (FUR) to furfurylamine (FAM) is one of the key reactions for the sustainable production of value-added primary amines in biomass valorization. Herein, we have constructed a series of N-doped porous carbon confined Co nanoparticles (CoNC) based on the pyrolysis of Co-containing ZIF-67 at different temperatures for the synthesis of FAM from FUR. The reductive amination activity of as-obtained CoNC catalysts shows a volcano plot as the pyrolysis temperature increases. The optimal CoNC-750, obtained by pyrolysis at 750 ℃, could afford a maximum FAM yield up to 99 % at 110 ℃, 0.3 MPa of NH3, 2 MPa of H2 in methanol, reflecting one of the excellent performances in terms of FAM yields for Co-based catalysts. Besides, no apparent deactivation of the CoNC-750 is observed after six consecutive runs, indicating an excellent stability. Through a combination of advanced characterizations, a positive linear relationship between the densities of the strong acid sites and the corresponding FAM productivities of CoNC catalysts has been revealed, indicating that the strong acid density is a key descriptor for facilitating the FUR-to-FAM transformation. This study provides an efficient approach for fabricating high-performing non-noble metal catalysts for the reductive amination of biomass-derived platform molecules, which could be of great aid for green and sustainable production of primary amines and beyond.
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