Catalysis Surveys from Asia最新文献

Enhanced Photocatalytic Activation of Peroxymonosulfate Using Ag-TiO2/SiO2 Monolith for Phenol Degradation Ag-TiO2/SiO2单体增强过氧单硫酸盐光催化降解苯酚

IF 2.1 4区化学

Catalysis Surveys from Asia Pub Date : 2025-02-28 DOI: 10.1007/s10563-025-09448-3

Thi-Ngoc-Suong Ho

{"title":"Enhanced Photocatalytic Activation of Peroxymonosulfate Using Ag-TiO2/SiO2 Monolith for Phenol Degradation","authors":"Thi-Ngoc-Suong Ho","doi":"10.1007/s10563-025-09448-3","DOIUrl":"10.1007/s10563-025-09448-3","url":null,"abstract":"<div><p>Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith photocatalyst was synthesized by a simple sol-gel and dip-coating method with AgNO<sub>3</sub> as Ag source, titanium <i>n</i>-butoxide and tetraethoxysilane as Si source. Photocatalytic activities of the synthesized Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith were evaluated through phenol degradation under UVA light irradiations. EDX-mapping verified that the Ag nanoparticles were successfully incorporated into the photocatalyst and evenly deposited on the surface of TiO<sub>2</sub>/SiO<sub>2</sub>. The surface and cross-sectional SEM images of the monolith material confirmed the successful coating of Ag(3%)-TiO<sub>2</sub>/ SiO<sub>2</sub> catalyst on the monolith surface (Ag(3%)-TS05/S/M). The study showed that the peroxymonosulfate (PMS)/Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith with appropriate Ag doping exhibited excellent activity under UVA light irradiation, was easy to separate from contaminants, and had good reusability. After four rounds of recycling, about 92% of the phenol was removed within. 240 min by the PMS/Ag(3%)-TiO<sub>2</sub>/SiO<sub>2</sub> monolith system with a sulfate radical as the main oxidation species. A new bond between SiO<sub>2</sub> and TiO<sub>2</sub> was formed to prevent TiO<sub>2</sub> removal during wastewater treatment. The performance of our Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith with the presence of PMS makes it highly suitable for practical application in treating wastewater contaminated with phenol pollutants.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 2","pages":"185 - 193"},"PeriodicalIF":2.1,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879596","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

Enhanced Degradation of Oxytetracycline Hydrochloride: A Comparative Study of Adsorption and Catalytic Wet Air Oxidation Using Cuttlefish Bone/CuFe2O4 Ferrite Composites 墨鱼骨/CuFe2O4铁氧体复合材料对盐酸土霉素的吸附和催化湿式空气氧化的比较研究

IF 2.1 4区化学

Catalysis Surveys from Asia Pub Date : 2025-02-17 DOI: 10.1007/s10563-025-09447-4

İlayda Özarabacı, Gülin Ersöz

{"title":"Enhanced Degradation of Oxytetracycline Hydrochloride: A Comparative Study of Adsorption and Catalytic Wet Air Oxidation Using Cuttlefish Bone/CuFe2O4 Ferrite Composites","authors":"İlayda Özarabacı, Gülin Ersöz","doi":"10.1007/s10563-025-09447-4","DOIUrl":"10.1007/s10563-025-09447-4","url":null,"abstract":"<div><p>The direct and sequential application of adsorption and catalytic wet air oxidation (CWAO) methods was evaluated for the removal of the veterinary antibiotic oxytetracycline hydrochloride (OTC-HCl) from wastewater. Cuttlefish bone (CFB), a natural marine material, was employed as both an adsorbent and a catalyst support to synthesize the composite CuFe₂O₄/CFB material. The optimal conditions for OTC-HCl adsorption were found to be 0.09 g/L CFB, pH 7.6, and 282 rpm, resulting in a 24% removal efficiency. The Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherm models were evaluated, with the Temkin isotherm identified as the most suitable. The adsorption kinetics followed a second-order kinetic model. The Weber–Morris intraparticle diffusion model suggested that both liquid film and intraparticle diffusion processes govern the adsorption kinetics. In the catalytic wet air oxidation process, a 75% removal efficiency was achieved at 0.5 g/L CuFe₂O₄/CFB, pH 4, and 100 °C. The most suitable kinetic model for describing the CWAO of OTC-HCl was found to be a two-step first-order reaction rate model. In the hybrid treatment process, CWAO was applied following adsorption, and toxicity tests indicated that no toxic by-products were generated during the sequential treatment.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 2","pages":"167 - 184"},"PeriodicalIF":2.1,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879628","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

Spatial Configurational Construction of Pt-ZSM-5 Bifunctional Catalysts for Hydroisomerization of n-Heptane 正庚烷加氢异构Pt-ZSM-5双功能催化剂的空间构型构建

IF 2.1 4区化学

Catalysis Surveys from Asia Pub Date : 2025-01-27 DOI: 10.1007/s10563-025-09446-5

Mengxuan Zhu, Hongqing Li, Xin Wang, Longyang Wang, Rui Wang, Heng Jiang, Changzi Jin

{"title":"Spatial Configurational Construction of Pt-ZSM-5 Bifunctional Catalysts for Hydroisomerization of n-Heptane","authors":"Mengxuan Zhu, Hongqing Li, Xin Wang, Longyang Wang, Rui Wang, Heng Jiang, Changzi Jin","doi":"10.1007/s10563-025-09446-5","DOIUrl":"10.1007/s10563-025-09446-5","url":null,"abstract":"<div><p>Design of efficient metal-acid bifunction catalysts is of significance for development of hydroisomerization of linear alkanes. In this study, the spatial configurational construction of Pt-ZSM-5 catalytic system was achieved by fabrication of acidic ZSM-5 zeolite and mesoporous silica core-shell composites equipped with controlled location of Pt sites, which aim to explore the effect of functional sites proximity on isomerization reactivity. A series of characterization techniques such as X-ray diffraction, transmission electronic microscopy, N<sub>2</sub> physical adsorption, NH<sub>3</sub> temperature programmed desorption, X-ray photoelectron spectroscopy and so on had confirmed that the synthesized core-shell bifunctional catalysts with different Pt location possessing similar textural, acid and metal properties. In the catalytic hydroisomerization of <i>n</i>-heptane, however, the catalyst with Pt sites locating at acid zeolite exhibits superior <i>n</i>-heptane conversion and isomerization selectivity, which indicates that proximity of active sites at atomic scale may be more conducive to their synergistic effect when the diffusional limitation from zeolitic channel is minimized. These results had presented new direction for the preparation of efficient bifunctional catalysts in hydroisomerization of linear alkanes.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 2","pages":"155 - 166"},"PeriodicalIF":2.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879624","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

Thermo-Responsive Poly (N-isopropyl acrylamide-b-vinylimidazole)/Pd Catalyst: Catalytic Application of Suzuki–Miyaura Coupling Reaction in Water 热响应型聚（n -异丙基丙烯酰胺-b-乙烯基咪唑）/钯催化剂：水中Suzuki-Miyaura偶联反应的催化应用

IF 2.1 4区化学

Catalysis Surveys from Asia Pub Date : 2025-01-05 DOI: 10.1007/s10563-024-09445-y

Soheila Ghasemi, Najme Zare, Milad Ghezelsofloo, Abdulhamid Dehghani, Hadieh Rahbar Kafshboran

{"title":"Thermo-Responsive Poly (N-isopropyl acrylamide-b-vinylimidazole)/Pd Catalyst: Catalytic Application of Suzuki–Miyaura Coupling Reaction in Water","authors":"Soheila Ghasemi, Najme Zare, Milad Ghezelsofloo, Abdulhamid Dehghani, Hadieh Rahbar Kafshboran","doi":"10.1007/s10563-024-09445-y","DOIUrl":"10.1007/s10563-024-09445-y","url":null,"abstract":"<div><p>This study reports a facile procedure for synthesizing and characterizing a novel catalyst based on thermo-responsive poly (<i>N</i>-isopropyl acrylamide-<i>b</i>-vinylimidazole)/Pd catalyst (PNIPAM-<i>b</i>-PVIm/Pd). A well-structured diblock copolymer was prepared using RAFT-controlled strategy. Initially, PNIPAM was fabricated with a lower critical solution temperature (LCST) at around 32 °C. Within another step, PNIPAM as a macro-RAFT agent and vinylimidazole as a monomer were utilized for synthesizing PNIPAM-<i>b</i>-PVIm. The reaction of PNIPAM-<i>b</i>-PVIm with Pd(OAc)<sub>2</sub> for one day, taken after applying NaBH<sub>4</sub> as a reducing agent, led to the synthesizing of PNIPAM-<i>b</i>-PVIm supported Pd. This new catalyst was characterized by different methods, <i>i.e.</i>, ICP, FT-IR, NMR, UV–Vis spectrophotometer, TGA, DLS, SEM, EDX, and SEC. This catalytic system was utilized to deliver an assortment of substituted biaryl compounds in water with good to excellent yields through the Suzuki coupling reaction. The greatest advantage of this catalytic platform is related to the reusability of the catalyst up to 7 times and non-use of organic solvent in coupling reactions. Simple purification of the coupling products due to the effortless recyclability of the catalysts is another characteristic of the method. This important characteristic is achieved by just adding diethyl ether to the reaction mixture to extract the biphenyls. The catalyst remains intact in aqueous phase and reused in other reaction runs without considerable loss of efficiency.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 2","pages":"139 - 154"},"PeriodicalIF":2.1,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879620","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

Green Synthesis of Iron Oxide-Based Superacid Catalysts Modified with Graphene Oxide for Efficient Esterification Reactions 氧化石墨烯改性氧化铁基超强酸催化剂的绿色合成及高效酯化反应

IF 2.1 4区化学

Catalysis Surveys from Asia Pub Date : 2024-12-23 DOI: 10.1007/s10563-024-09443-0

Abeer A. Elssawy, Mohsen M. T. El-Tahawy, Hussein A. Khalaf

{"title":"Green Synthesis of Iron Oxide-Based Superacid Catalysts Modified with Graphene Oxide for Efficient Esterification Reactions","authors":"Abeer A. Elssawy, Mohsen M. T. El-Tahawy, Hussein A. Khalaf","doi":"10.1007/s10563-024-09443-0","DOIUrl":"10.1007/s10563-024-09443-0","url":null,"abstract":"<div><p>Iron oxide-based superacid catalysts were successfully prepared using impregnation method. Graphene oxide was prepared from sugarcane bagasse, the biowaste of sugar factories, modified Hummer’s method. Fe<sub>2</sub>O<sub>3</sub> prepared by precipitation method followed by impregnation with ammonium persulfate and doped with graphene oxide. These catalysts were applied to the esterification of oleic acid with methanol at various conditions such as temperature, reaction time, and catalyst dosage. The highest yield of 96% was achieved using 0.2 g of S₂/Fe₂O₃ at 100 °C for 3 h, indicating a high density of Brønsted and Lewis acid sites on its surface. Catalyst characterization (XRD, SEM, FTIR, N₂ adsorption-desorption analysis, and TGA) confirmed good nanoparticle crystallinity, effective intercalation of metal oxides with persulfate and graphene oxide, and a predominantly mesoporous structure. Sulfation with ammonium persulfate significantly enhanced the acidity of iron oxide, while the addition of graphene oxide provided a moderate acidity increase. This increase in acidity positively impacted the conversion rate of oleic acid with methanol. All three catalysts (GF, SF, GSF) demonstrated strong reusability for oleic acid esterification, maintaining conversion efficiency above 50% after six cycles, indicating economic feasibility with minimal efficiency loss. Overall, this solid superacid catalyst presents a promising green pathway for ester synthesis and biodiesel production.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 2","pages":"111 - 126"},"PeriodicalIF":2.1,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879658","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

Catalytic Production of Glycerol Carbonate from Glycerol Using Sunflower Stalk-Derived Biochars: Fabrication, Characterization, and Performance Evaluation 用向日葵茎衍生的生物炭催化甘油生产碳酸甘油：制备、表征和性能评价

IF 2.1 4区化学

Catalysis Surveys from Asia Pub Date : 2024-12-16 DOI: 10.1007/s10563-024-09444-z

Emine Sert, Esra Yılmaz Mertsoy, Murat Sert

{"title":"Catalytic Production of Glycerol Carbonate from Glycerol Using Sunflower Stalk-Derived Biochars: Fabrication, Characterization, and Performance Evaluation","authors":"Emine Sert, Esra Yılmaz Mertsoy, Murat Sert","doi":"10.1007/s10563-024-09444-z","DOIUrl":"10.1007/s10563-024-09444-z","url":null,"abstract":"<div><p>This study investigates the fabrication, characterization, and catalytic performance of innovative biochars derived from sunflower stalk cellulose, emphasizing their potential as sustainable catalysts in green chemistry applications. Biochars were produced via pyrolysis at 450, 550, and 650 °C, yielding samples labeled SSB1, SSB2, and SSB3, respectively. The production of glycerol carbonate through the transesterification of glycerol and dimethyl carbonate (DMC) was selected as a model reaction to evaluate the catalytic efficacy of these biochars. This approach aligns with the principles of green chemistry, addressing the effective utilization of biomass waste and excess glycerol while contributing to a circular economy. Characterization using FTIR, XRD, TGA, N₂ adsorption, and SEM-EDX analyses revealed significant effects of pyrolysis temperature on the physicochemical properties of the biochars, including yield, pH, surface area, and mineral content. Higher pyrolysis temperatures led to increased porosity, surface area, and mineral content, which enhanced catalytic performance. Under optimized conditions, the catalytic activity of SSB1, SSB2, and SSB3 was evaluated at a reaction temperature of 110 °C, a catalyst loading of 5 wt%, a reaction period of 20 min, and a DMC-to-glycerol molar ratio of 5:1. Among the biochars, SSB3 demonstrated the highest catalytic activity, achieving a glycerol conversion rate of 65.3% and glycerol carbonate selectivity of 53.4%. By linking the structure-performance relationship, this paper highlights the innovation and logic of utilizing biochars as effective catalysts in heterogeneous processes. The findings demonstrate the potential of biochars derived from sunflower stalk residues as sustainable alternatives to conventional catalysts, offering valuable insights into the development of functional materials for environmentally friendly chemical processes.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 2","pages":"127 - 138"},"PeriodicalIF":2.1,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879612","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

Tungstic Acid-Functionalized Natural Zeolite as a Solid Acid Catalyst for Levulinic Acid Esterification 钨酸功能化天然沸石作为乙酰丙酸酯化固体酸催化剂

IF 2.1 4区化学

Catalysis Surveys from Asia Pub Date : 2024-11-09 DOI: 10.1007/s10563-024-09442-1

Latifah Hauli, Febriana, Isalmi Aziz, Muhammad Safaat, Hendris Hendarsyah Kurniawan, Resta Adelia, Mohammad Jihad Madiabu, Muflikhah, Dicky Annas, Silvester Tursiloadi

{"title":"Tungstic Acid-Functionalized Natural Zeolite as a Solid Acid Catalyst for Levulinic Acid Esterification","authors":"Latifah Hauli,  Febriana, Isalmi Aziz, Muhammad Safaat, Hendris Hendarsyah Kurniawan, Resta Adelia, Mohammad Jihad Madiabu,  Muflikhah, Dicky Annas, Silvester Tursiloadi","doi":"10.1007/s10563-024-09442-1","DOIUrl":"10.1007/s10563-024-09442-1","url":null,"abstract":"<div><p>The investigation of the process of converting levulinic acid (LA) into ethyl levulinate (EL) using tungstic acid (TA)-functionalized activated natural zeolite (AZ) was systematically conducted. The aims of this work were to synthesize and characterize the activated zeolite modified by tungstic acid (TA-AZ) and also evaluate its performance in LA esterification. We employed the wet impregnation approach and ultrasonication-assisted method to produce TA-AZ catalyst with different concentrations of TA (15, 20, and 25 wt%). Fourier transform infrared (FTIR), ammonia-temperature programmed desorption (NH<sub>3</sub>-TPD), X-ray diffraction (XRD), scanning electron microscope with an energy dispersive X-ray spectrometer (SEM-EDX), transmission electron microscope (TEM), and surface area analyzer (SAA) were among the analytical methods used to investigate the chemical and physical characteristics of AZ and TA-AZ catalysts. The liquid yields from LA esterification were analyzed by GC-FID. The findings indicated that the 25TA-AZ catalyst exhibited the highest acidity, reaching 3.65 mmol/g. The presence of TA in AZ resulted in an enhancement of LA conversion and an increase in EL yield. The LA esterification process, employing a 25TA-AZ catalyst with a reaction temperature of 150 °C and a weight% of 0.5 wt%, produced 91.72% for LA conversion and 82.65% for EL yield.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 1","pages":"97 - 109"},"PeriodicalIF":2.1,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362081","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

Iron Nanoparticle-Catalyzed Enantioselective Electro-Organic Carboxylation of Styrenes with CO2 Using Graphene Oxide Modified with PyrCO-cyclo@Fe in the Presence of Deep Eutectic Electrolyte and Solvent 在深度共晶电解质和溶剂存在下，纳米铁颗粒催化PyrCO-cyclo@Fe改性氧化石墨烯与CO2对映选择性苯乙烯电有机羧基化

IF 2.1 4区化学

Catalysis Surveys from Asia Pub Date : 2024-11-08 DOI: 10.1007/s10563-024-09439-w

Amer Alhaj Zen, Majid S. Jabir, Zaman Abdalhussein Ibadi Alaridhee, Rafid Kamal Jameel, Morug Salih Mahdi, Aseel Salah Mansoor, Usama Kadem Radi, Ameer Hassan Idan, Hala Bahair, Elyor Berdimurodov, Hasan Majdi, Abdulrahman A. Almehizia

{"title":"Iron Nanoparticle-Catalyzed Enantioselective Electro-Organic Carboxylation of Styrenes with CO2 Using Graphene Oxide Modified with PyrCO-cyclo@Fe in the Presence of Deep Eutectic Electrolyte and Solvent","authors":"Amer Alhaj Zen, Majid S. Jabir, Zaman Abdalhussein Ibadi Alaridhee, Rafid Kamal Jameel, Morug Salih Mahdi, Aseel Salah Mansoor, Usama Kadem Radi, Ameer Hassan Idan, Hala Bahair, Elyor Berdimurodov, Hasan Majdi, Abdulrahman A. Almehizia","doi":"10.1007/s10563-024-09439-w","DOIUrl":"10.1007/s10563-024-09439-w","url":null,"abstract":"<div><p>This study explores the use of graphene oxide (GO) modified with PyrCO-cyclo@Fe as an efficient and selective catalyst. The modification of GO with PyrCO-cyclo@Fe provides a robust platform for the synthesis of (S)-2-phenylpropanoic acid derivatives <b>4(a–l)</b>, facilitated by the presence of choline chloride ethylene glycol (ChCl/EGC) as the electrolyte in good to excellent yields (89–97%). The experimental results demonstrate that this catalytic system not only enhances the enantioselectivity of the carboxylation process but also improves the overall yield and efficiency. This method presents a promising approach for the production of valuable enantioenriched carboxylic acids, contributing to the development of green and sustainable catalytic processes in organic synthesis. The synthesized GO-PyrCO-cyclo@Fe electrode was examined utilizing various analytical methods, including FT-IR, CV, SEM, EDS, BET, TGA, and XPS The synthesized (S)-2-phenylpropanoic acid derivatives <b>4(a–l)</b> were identified and characterized through melting point determination, FT-IR, <sup>1</sup>HNMR, and CHN analyses.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 1","pages":"37 - 57"},"PeriodicalIF":2.1,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362156","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

CdS/MoS2 Heterojunctions: Facile Synthesis and Photocatalytic Reduction of the Toxic Cr(VI) to Cr(III) Micronutrient CdS/MoS2 异质结：易合成和光催化将有毒的六价铬还原为三价铬微量元素

IF 2.1 4区化学

Catalysis Surveys from Asia Pub Date : 2024-11-01 DOI: 10.1007/s10563-024-09440-3

Haseeb Ullah, Rizwana Ghazi, Shili Gai, Abeer A. AlObaid, Nabil Al-Zaqri, Ziaur Rehman

{"title":"CdS/MoS2 Heterojunctions: Facile Synthesis and Photocatalytic Reduction of the Toxic Cr(VI) to Cr(III) Micronutrient","authors":"Haseeb Ullah, Rizwana Ghazi, Shili Gai, Abeer A. AlObaid, Nabil Al-Zaqri, Ziaur Rehman","doi":"10.1007/s10563-024-09440-3","DOIUrl":"10.1007/s10563-024-09440-3","url":null,"abstract":"<div><p>Among the aquatic pollutant remediation reactions, the reduction of toxic Cr(VI) to a benign Cr(III) is of significant interest. Among the avrious remediation methods, photocatalysis is considered optimal due to its efficiency and eco-friendly nature. Therefore, the development of highly active, visible-light-responsive, and noble-metal-free photocatalysts for the elimination of toxic heavy metal ions from wastewater is highly desirable. In this study, a facile two-step method, comprising solvothermal and hydrothermal, was used to synthesize visible-light-responsive CdS/MoS<sub>2</sub> heterojunctions (CM-HJs). Extensive structural characterization was performed to assess the crystal structure (XRD and XPS), morphology (SEM and BET), and optical (UV-Vis) properties of the as-synthesized photocatalysts. Aquatic Cr(VI) photoreduction was conducted on these photocatalysts under visible light irradiation. The results revealed the high photocatalytic activity and photostability of CM-HJs for Cr(VI) reduction compared to the bare CdS. Among the heterojunctions, CM-10 (10 wt % MoS<sub>2</sub>) exhibted the highest acvtivty, reducing 99.04% of Cr(VI) within 60 min. The enhanced photocatalytic activity can be attributed to its high light harvesting capability and efficient separation and transportation of the produced electron-hole pairs due to the intimate contact interfaces and matching band potentials of CdS with MoS<sub>2</sub>. Based on the literature and experimental evidence, a photocatalytic mechanism for the photoreduction of Cr(VI) is discussed in detail. The effect of different parameters; like the amount of photocatalyst, amount of Cr(VI), and pH were also evaluated. Like other good photocatalysts, CM-10 owes good photostability and recyclability.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 1","pages":"58 - 70"},"PeriodicalIF":2.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361820","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

Catalytic Activity of MnWO4@g-C3N4 and CuWO4@g-C3N4 Nano-Composites for Green Fuel Production 用于绿色燃料生产的 MnWO4@g-C3N4 和 CuWO4@g-C3N4 纳米复合材料的催化活性

IF 2.1 4区化学

Catalysis Surveys from Asia Pub Date : 2024-11-01 DOI: 10.1007/s10563-024-09437-y

Muhammad Saeed, Amir Waseem, Azeem Intisar

{"title":"Catalytic Activity of MnWO4@g-C3N4 and CuWO4@g-C3N4 Nano-Composites for Green Fuel Production","authors":"Muhammad Saeed, Amir Waseem, Azeem Intisar","doi":"10.1007/s10563-024-09437-y","DOIUrl":"10.1007/s10563-024-09437-y","url":null,"abstract":"<div><p>The present study successfully synthesized MnWO<sub>4</sub>@g-C<sub>3</sub>N<sub>4</sub> and CuWO<sub>4</sub>@g-C<sub>3</sub>N<sub>4</sub> nanocomposites which demonstrated high efficiency and recoverability as a robust catalyst for ODS of model (DBT) and real fuel oil (kerosene and diesel). The manufactured composites were thoroughly characterized using XRD, TGA, FTIR, SEM and EDX confirming its physicochemical properties. The SEM results revealed that MnWO<sub>4</sub> and CuWO<sub>4 </sub>nanoparticles were well organized on the exterior of g-C<sub>3</sub>N<sub>4</sub> forming interesting spherical particle morphology. Under optimized conditions, the nanocomposites MnWO<sub>4</sub>@g-C<sub>3</sub>N<sub>4</sub> and CuWO<sub>4</sub>@g-C<sub>3</sub>N<sub>4</sub> exhibited an impressive 98 and 98.5% removal of DBT, respectively from the model fuel (100 mg/L) within 180 min at a temperature of 45 °C using 1 mL of oxidant and 0.1 g of catalyst amount. Furthermore, the catalytic activity of composites was investigated for real fuel desulfurization and promising results were achieved. Moreover, the fuel properties were in accordance with ASTM specifications. The study found that the desulfurization reaction followed the pseudo 1st order kinetic models and the negative ∆G indicated a spontaneous method. The nanocomposites exhibited promising reusability as it could be used up to five times without significantly reducing their ability to desulfurize fuel oil. The study highlights its potential for practical applications in reducing sulfur content in fuel oils contributing to cleaner and environment friendly energy production and utilization.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 1","pages":"11 - 25"},"PeriodicalIF":2.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361821","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