Applied Catalysis A: General最新文献_第3页

Efficient desulfurization of model diesel fuel using an amphiphilic bimetallic synergistic catalyst Mo/Zn-EG-K 两亲性双金属催化剂Mo/Zn-EG-K对模型柴油的高效脱硫研究

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-14 DOI: 10.1016/j.apcata.2025.120445

Mingyan Chen , Haiqiong Wang , Dehua Zhang , Yucheng Liu

{"title":"Efficient desulfurization of model diesel fuel using an amphiphilic bimetallic synergistic catalyst Mo/Zn-EG-K","authors":"Mingyan Chen , Haiqiong Wang , Dehua Zhang , Yucheng Liu","doi":"10.1016/j.apcata.2025.120445","DOIUrl":"10.1016/j.apcata.2025.120445","url":null,"abstract":"<div><div>Carbon-based materials, particularly expanded graphite (EG), serve as excellent catalyst supports due to their high surface area, mechanical stability, and defect-rich structure. This study developed an amphiphilic Mo/Zn-EG-K catalyst by anchoring Zn/Mo oxides on EG and modifying it with KH550 silane, balancing lipophilic (methoxy) and hydrophilic (amino) properties to enhance oxidative desulfurization (ODS) efficiency. Characterization (TEM, Py-IR, etc.) confirmed the catalyst’s structure and amphiphilicity. Under optimized conditions (60 °C, O/S=10, 60 min), 99.12 % dibenzothiophene (DBT) conversion was achieved, reducing sulfur content below 10 ppm—outperforming most Mo-based catalysts. The reaction followed first-order kinetics, and the catalyst retained 95 % activity after five cycles. Mechanistic studies revealed that Zn enhances surface electrophilicity, promoting H₂O₂ activation to generate •O₂⁻ radicals, which form reactive Mo(O₂) species. These intermediates selectively oxidize DBT into polar sulfoxides/sulfones, subsequently extracted by acetonitrile. The catalyst demonstrated strong performance in real diesel and continuous-flow systems, highlighting its industrial potential for ultra-deep desulfurization.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120445"},"PeriodicalIF":4.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702300","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}

引用次数: 0

Superb three-dimensional porous-structured metal foam-supported Ni/Ce/Al-CF ensemble as an active structured catalyst for hydrogen production via methanol decomposition 极好的三维多孔结构金属泡沫支撑Ni/Ce/Al-CF系综作为甲醇分解制氢的活性结构催化剂

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-13 DOI: 10.1016/j.apcata.2025.120450

Lijie Fu , Yong Men , Shuya Wu , Shuyi Xu , Guohong Wang , Chongchong Kong , Jinguo Wang , Feng Shi , Zhenrong Yan , Xuelong Miao

{"title":"Superb three-dimensional porous-structured metal foam-supported Ni/Ce/Al-CF ensemble as an active structured catalyst for hydrogen production via methanol decomposition","authors":"Lijie Fu , Yong Men , Shuya Wu , Shuyi Xu , Guohong Wang , Chongchong Kong , Jinguo Wang , Feng Shi , Zhenrong Yan , Xuelong Miao","doi":"10.1016/j.apcata.2025.120450","DOIUrl":"10.1016/j.apcata.2025.120450","url":null,"abstract":"<div><div>A series of metal foam-supported Ni-based catalysts-monometallic Ni-CF, bimetallic Ni/Ce-CF, Ni/Al-CF and trimetallic Ni/Ce/Al-CF-were prepared by modified wet chemical etching (MWCE) and employed for hydrogen production via methanol decomposition (MD) in the temperature range of 200–325 ℃. Among those catalysts, the 2Ni/3Ce/3Al-Cu foam (CF) catalyst shows the superior catalytic performance for hydrogen production, achieving a remarkable activity of almost complete methanol conversion (99.3 %) and high H<sub>2</sub> selectivity of 91.8 % at 300 ℃. Moreover, the performance of 2Ni/3Ce/3Al-CF catalyst remained stable during the stability test for up to 40 h at 275 ℃. SEM and BET characterization show that etched copper foam can remarkably enlarge the specific surface area of the structured catalyst, provide more active sites, and enhance its catalytic activity. The strong interaction among Ni, Ce and Al induce the synergistic effect by creating abundant oxygen vacancies in the trimetallic system as evidenced by XPS. H<sub>2</sub>-TPR and XPS further revealed a crucial balance between reducibility and metal-support interactions: Al-containing catalysts like 2Ni/3Ce/3Al-CF exhibit higher reduction thresholds and confirming the role of Al in stabilizing oxidized Ni species via strong metal-support interactions. And CH<sub>3</sub>OH-TPD analysis indicated the catalyst had much higher low-temperature hydrogen production than other catalysts because of the synergistic effect of three metals, consistent with the catalyst activity test results. The developed strategy may provide insights into the development of the design principles for high-performance structured catalysts for hydrogen production via methanol decomposition.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120450"},"PeriodicalIF":4.7,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632318","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}

引用次数: 0

Ce3+-incorporated HZSM-5 as efficient catalysts with rich-strong Brønsted acid sites for cyclohexene hydration Ce3+-掺入HZSM-5作为环己烯水化的高效催化剂，具有丰富的强Brønsted酸位

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-13 DOI: 10.1016/j.apcata.2025.120451

Hefang Wang , Shijiao Hao , Hui Jiang, Xiaofei Ma, Hashim Khan, Jingwei Liu, Weiqian Qi

{"title":"Ce3+-incorporated HZSM-5 as efficient catalysts with rich-strong Brønsted acid sites for cyclohexene hydration","authors":"Hefang Wang , Shijiao Hao , Hui Jiang, Xiaofei Ma, Hashim Khan, Jingwei Liu, Weiqian Qi","doi":"10.1016/j.apcata.2025.120451","DOIUrl":"10.1016/j.apcata.2025.120451","url":null,"abstract":"<div><div>A series of Ce<sup>3+</sup> incorporated HZSM-5 catalysts were prepared by wet impregnation method for cyclohexene hydration. XRD, Vacuum-IR, XPS, and <sup>29</sup>Si NMR confirmed the successful incorporation of Ce<sup>3+</sup> into the HZSM-5. NH<sub>3</sub>-TPD and Py-IR analyses revealed that Ce-HZSM-5 catalyst significantly increased strong Brønsted acid density compared to HZSM-5. Further, the strong Brønsted/Lewis acid ratio of 3.0Ce-HZSM-5 is 4-fold higher than that of HZSM-5 (9.2 vs 2.3). As a result, the catalyst exhibited excellent activity with 12.7 % conversion of cyclohexene and 99.9 % selectivity to cyclohexanol and maintained high catalytic performance after five cycles. In situ FTIR was used to investigate the cyclohexene hydration reaction mechanism. The results showed that Ce<sup>3+</sup> interacts with Si–OH to form a new strong Bronsted acid site (Si–OH–Ce). This site can effectively promote the activation of cyclohexene and significantly enhance the catalytic hydration performance.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120451"},"PeriodicalIF":4.7,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663186","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}

引用次数: 0

Solvent-induced one-pot catalytic conversion of xylose to high yield γ-valerolactone over Zr-Beta zeolite 溶剂诱导木糖在Zr-Beta沸石上一锅催化转化为高产γ-戊内酯

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-12 DOI: 10.1016/j.apcata.2025.120449

Tinghao Han , Zhongdi Liu , Lincai Peng , Weipeng Song , Huai Liu , Wenlong Jia , Rui Zhang

{"title":"Solvent-induced one-pot catalytic conversion of xylose to high yield γ-valerolactone over Zr-Beta zeolite","authors":"Tinghao Han , Zhongdi Liu , Lincai Peng , Weipeng Song , Huai Liu , Wenlong Jia , Rui Zhang","doi":"10.1016/j.apcata.2025.120449","DOIUrl":"10.1016/j.apcata.2025.120449","url":null,"abstract":"<div><div>The efficient production of γ-valerolactone (GVL) with high yield directly from xylose is of particular interest but remains a great challenge due to the long reaction path. We herein developed a facile catalytic system to directly convert xylose to GVL with a record-high yield of 54.3 %, employing β-zeolite supported Zr-based catalyst in 1,4-dioxane/isopropanol co-solvent. Using Zr(NO<sub>3</sub>)<sub>4</sub>·5 H<sub>2</sub>O as the Zr sources resulting in well-retained β-zeolite structure, larger surface area and pore volume and better dispersion of Zr species, as well as balanced acidic sites where higher amount of Brønsted acid sites promoted the ring-opening of furfural alcohol for this cascade reaction. Notably, the introduction of 1,4-dioxane facilitated the <em>in situ</em> formation of furfural (i.e. yield-determining step) by diluting the competitive adsorption behavior between isopropanol and xylose, allowing more xylose molecules to access the active center, thus promoting the sequential production of GVL with unexpectedly high yield. The present work provides a efficient and straightforward preparation of GVL from xylose, paving the pathway towards higher atom economy.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120449"},"PeriodicalIF":4.7,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632368","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}

引用次数: 0

Two-dimensional MOF derived NiFe-VOx with high catalytic activity and corrosion resistance for seawater splitting 二维MOF衍生NiFe-VOx具有高催化活性和耐腐蚀性能

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-12 DOI: 10.1016/j.apcata.2025.120448

Yingying Yao, Siru Chen, Yufei Feng, Yanjie Wang, Jiabin Xiong, Yaomin Zhao

{"title":"Two-dimensional MOF derived NiFe-VOx with high catalytic activity and corrosion resistance for seawater splitting","authors":"Yingying Yao, Siru Chen, Yufei Feng, Yanjie Wang, Jiabin Xiong, Yaomin Zhao","doi":"10.1016/j.apcata.2025.120448","DOIUrl":"10.1016/j.apcata.2025.120448","url":null,"abstract":"<div><div>Developing highly efficient and corrosion resistance electrocatalysts for seawater splitting can produce H<sub>2</sub> as well as alleviate the shortage of freshwater. In this work, two-dimensional Ni-Fe metal-organic framework on Ni foam (NF) is in situ transferred into NiFe-VO<sub>x</sub>/NF. Electrochemical measurements demonstrate that the optimized NiFe<sub>4</sub>-VO<sub>x</sub>/NF only requires 285 mV of overpotential to achieve a current density of 100 mA cm<sup>−2</sup> in alkaline natural seawater. In addition, the catalyst can run stably for at least 100 h at high current density in alkaline natural seawater. The post analysis indicates that during the electrochemical reaction process, NiFe<sub>4</sub>-VO<sub>x</sub> can transfer into high active Fe(Ni)OOH, therefore improving the catalytic activity of oxygen evolution reaction (OER). What is exciting is that the metavanadate ions formed on the catalyst surface can act as a corrosion resistant layer, effectively avoiding the corrosion of chloride ions. This work not only provide a new catalyst for seawater splitting, but also reveals the mechanisms for the improved catalytic activity and resistance to corrosion, which can inspire the development of electrocatalysts for seawater splitting.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120448"},"PeriodicalIF":4.7,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623340","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}

引用次数: 0

Catalytic oxidation of toluene promoted by Mn-Ce solid solutions with multiple active sites and high oxygen mobility 具有多活性位点和高氧迁移率的锰铈固溶体对甲苯的催化氧化作用

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-11 DOI: 10.1016/j.apcata.2025.120446

Zedong Chen , Jiabin Zhou , Xianjie Liu , Dan Liu , Quanjun Xiang

{"title":"Catalytic oxidation of toluene promoted by Mn-Ce solid solutions with multiple active sites and high oxygen mobility","authors":"Zedong Chen , Jiabin Zhou , Xianjie Liu , Dan Liu , Quanjun Xiang","doi":"10.1016/j.apcata.2025.120446","DOIUrl":"10.1016/j.apcata.2025.120446","url":null,"abstract":"<div><div>In this study, the active site density and lattice oxygen mobility on the surface of (MnCe)O<sub>x</sub> solid solution catalysts were synchronously optimized by controlling the ratio and sequence of the addition of tetrapropylammonium hydroxide and dextran. This led to the exceptional performance of co-modified Mn-Ce solid solution catalysts in efficiently degrading toluene. The best catalytic performance of toluene oxidation was achieved after applying 0.1 mol/L tetrapropylammonium hydroxide followed by 2 % dextran modified (MnCe)O<sub>x</sub> (0.1T-2 % D-MC). The toluene conversion rate reached 90 % at 211 °C. As observed by scanning electron microscopy (SEM) and Raman spectroscopy (Raman), tetrapropylammonium hydroxide tends to interact with CeO<sub>2</sub>, thus generating oxygen vacancies. Meanwhile, the porous structure on the catalyst surface was induced to form, the specific surface area was increased, the active component grain size was reduced, and the active site density was increased. Oxygen temperature programmed desorption (O<sub>2</sub>-TPD) and X-ray photoelectron spectroscopy (XPS) results showed that dextran interacted with MnO<sub>x</sub> to produce lattice defects, and complexed with metal ions, thus the rate of cycling of lattice oxygen species was increased. The Mn-CeO<sub>2</sub> (111)-O<sub>v</sub>-OH model exhibits excellent adsorption capacity for toluene and oxygen molecules (-0.9025 eV, −5.9739 eV). A new approach to utilize organic substances and auxiliary agents with targeting properties as modifiers is proposed in this paper. The limitations of MnCe binary catalysts in practical applications were successfully broken through. A new idea and method for solving related scientific problems are provided by the research results.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120446"},"PeriodicalIF":4.7,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623339","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}

引用次数: 0

Rational design of MoS2-supported single-atom catalysts for enhancing phenol deoxygenation: Unveiling synergistic electronic-geometric effects and a universal structure-activity descriptor 合理设计二硫化钼负载单原子催化剂促进苯酚脱氧：揭示协同电子几何效应和通用结构活性描述符

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-11 DOI: 10.1016/j.apcata.2025.120447

Jiehang Wei, Xin Wang, Tao Ma, Shouqin Mu, Yingtao Liu

引用次数: 0

Polyoxometalates modified g-C3N4 promotes efficient photocatalytic cleavage of C−C bond in lignin model compounds 多金属氧酸酯修饰g-C3N4促进木质素模型化合物中C−C键的有效光催化裂解

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-11 DOI: 10.1016/j.apcata.2025.120443

Chang Liu , Da Xu , Ningxin Wei , Junyou Shi

{"title":"Polyoxometalates modified g-C3N4 promotes efficient photocatalytic cleavage of C−C bond in lignin model compounds","authors":"Chang Liu , Da Xu , Ningxin Wei , Junyou Shi","doi":"10.1016/j.apcata.2025.120443","DOIUrl":"10.1016/j.apcata.2025.120443","url":null,"abstract":"<div><div>Lignin stands out as the largest natural reservoir of renewable aromatic compounds, positioning it as a highly potential substitute for fossil fuels. However, due to the complex structure of lignin, achieving lignin depolymerization under mild conditions is still challenging. Phosphomolybdic acid (PMo<sub>12</sub>) was introduced as an electron acceptor, and phosphomolybdic acid/carbon nitride (PMo<sub>12</sub>/g-C<sub>3</sub>N<sub>4</sub>) composite photocatalysts with varying phosphomolybdic acid loadings were synthesized by a straightforward hydrothermal process. PMo<sub>12</sub>/g-C<sub>3</sub>N<sub>4</sub> composite photocatalysts efficiently cleave C−C bonds in the β−O−4 lignin model compounds at room temperature and pressure under simulated sunlight irradiation. The 15 % PMo<sub>12</sub>/g-C<sub>3</sub>N<sub>4</sub> composite photocatalyst has far higher catalytic efficiency than pure g-C<sub>3</sub>N<sub>4</sub>, with optimal yields of benzaldehyde and phenyl formate of 81 % and 66 %, respectively, and the selectivity of C−C cleavage could reach 94 %. The results demonstrate that loading PMo<sub>12</sub> greatly enhances the separation of photoinduced carriers within the 15 % PMo<sub>12</sub>/g-C<sub>3</sub>N<sub>4</sub> composite photocatalyst, which substantially increases its photocatalytic performance. This research introduces a novel method to efficiently cleave C−C bonds in lignin, which could have important implications for its high-value utilization.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120443"},"PeriodicalIF":4.7,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702299","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}

引用次数: 0

Palladium-loaded lanthanum metal organic framework for vanillin hydrodeoxygenation 香草醛氢脱氧负载钯金属镧有机骨架

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-10 DOI: 10.1016/j.apcata.2025.120442

Kavya Pradeepan , Shun Nishimura

{"title":"Palladium-loaded lanthanum metal organic framework for vanillin hydrodeoxygenation","authors":"Kavya Pradeepan , Shun Nishimura","doi":"10.1016/j.apcata.2025.120442","DOIUrl":"10.1016/j.apcata.2025.120442","url":null,"abstract":"<div><div>Metal organic frameworks (MOFs) as effective supports have attracted interest in heterogeneous catalysis, especially for stabilizing metal species on the porous structure. Herein, we synthesize palladium-loaded lanthanum-based MOF (Pd/La-MOF) as an efficient catalyst for vanillin hydrodeoxygenation (HDO). The successful incorporation of Pd nanoparticles onto the La-MOF support was confirmed by a transmission electron microscopy (TEM), while the structural integrity of the La-MOF post-metal loading was verified through X-ray diffraction (XRD) analysis. Thermogravimetric analysis (TGA) demonstrated the thermal stability of the catalyst under reaction conditions. Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and N<sub>2</sub> adsorption–desorption isotherms were employed to evaluate the functional groups, oxidation state, metal support interaction and specific surface area of the material. Catalytic performance of as-prepared Pd/La-MOF catalysts was evaluated for vanillin HDO. Among the different Pd loadings (0.5, 1.0, and 2.0 wt%), the 1.0 wt% Pd/La-MOF exhibited the highest creosol yield of 93 % within 6 h at 160°C under 1.0 MPa H₂ pressure. The reaction mechanism was proposed based on time-profile analysis. Comparative analysis with other Pd-loaded supports demonstrated the superior catalytic efficiency of La-MOF. Additionally, poisoning and leaching studies confirmed the role of acidic sites in creosol formation and the absence of Pd leaching during the reaction. Recyclability tests, along with post-reaction XRD and TEM analyses, confirmed the structural stability of the catalyst and uniform dispersion of Pd nanoparticles after multiple cycles. These results highlight the potential of La-MOF as a thermally stable and effective support for metal-based catalysts, particularly in the Pd-catalyzed HDO reactions.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120442"},"PeriodicalIF":4.7,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596172","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}

引用次数: 0

Promotion in styrene removal through visible light driven photocatalytic oxidation over Ni coated g-C3N4 Ni包覆g-C3N4上可见光催化氧化对苯乙烯脱除的促进作用

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-10 DOI: 10.1016/j.apcata.2025.120444

Birgitta Narindri Rara Winayu , Yu-Lin Chen , Hsin Chu

{"title":"Promotion in styrene removal through visible light driven photocatalytic oxidation over Ni coated g-C3N4","authors":"Birgitta Narindri Rara Winayu , Yu-Lin Chen , Hsin Chu","doi":"10.1016/j.apcata.2025.120444","DOIUrl":"10.1016/j.apcata.2025.120444","url":null,"abstract":"<div><div>A type of harmful volatile organic compounds (VOCs), styrene, is crucial to be removed from the indoor environment. Implementation of g-C<sub>3</sub>N<sub>4</sub> for photocatalytic oxidation of VOCs has the limitation for its operation under visible light due to its wide band gap but can be modified by doping with metal oxides. In this study, the improvement in photocatalytic oxidation of styrene over g-C<sub>3</sub>N<sub>4</sub> was tested under various ratios of Ni coating. 0.1 wt%Ni/g-C<sub>3</sub>N<sub>4</sub> achieved the highest styrene conversion of 49.6 ± 0.5 % and further applied in the examination under various operating conditions (temperature, relative humidity, retention time, and inlet concentration of styrene). The presence of water vapor molecules at more than 1 % relative humidity declined the photocatalytic activity of 0.1 wt%Ni/g-C<sub>3</sub>N<sub>4</sub> due to the competitive adsorption on the active site. Following assessment were conducted for radical scavengers examination, exhausted gas compositions with intermediates, building of proposed reaction mechanism, and development of reaction kinetics.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120444"},"PeriodicalIF":4.7,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596171","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}

引用次数: 0