{"title":"Transfer Hydrogenation of N- and O-Heterocyclic Compounds in the Presence of Platinum-Containing Nanoparticles Formed In Situ","authors":"Yuliya Yu. Titova","doi":"10.1007/s10563-025-09455-4","DOIUrl":"10.1007/s10563-025-09455-4","url":null,"abstract":"<div><p>It is reported on the formation and functioning of platinum-containing nanoparticles generated in situ, which are active intransfer hydrogenation of model N- and O-heterocyclic compounds such as 1-methyl-1H-indole and furfural. The averagesize of the particles was determined by TEM, and their qualitative composition was established using electron diffractionand energy dispersive X-ray spectroscopy.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 4","pages":"297 - 308"},"PeriodicalIF":2.3,"publicationDate":"2025-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145537792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study of Bimetallic Catalysts Supported on CeO2 for NO Reduction Using Selective Catalytic Reduction with H2","authors":"Shyam Sunder Rao, Dhanashree Jagtap, Abhishek Anand, Sweta Sharma","doi":"10.1007/s10563-025-09459-0","DOIUrl":"10.1007/s10563-025-09459-0","url":null,"abstract":"<div><p>This research article discussed the synthesis of bimetallic Pd-Cu/CeO<sub>2</sub> catalysts for NO removal using selective catalytic reduction (SCR) and H<sub>2</sub> as a reducing agent. The CeO<sub>2</sub> support was synthesized using both hydrothermal and precipitation methods. The catalysts were characterized through several analytical techniques, including X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The catalysts consisted of 25 wt% Cu and 0.4–1.2 wt% Pd. Among the catalysts, the one supported on CeO<sub>2</sub> prepared via the hydrothermal method exhibited the highest catalytic activity for NO reduction. Incorporating Pd and Cu into the CeO<sub>2</sub> support significantly improved NO conversion and selectivity. The optimal performance was observed with the bimetallic catalyst containing 0.4 wt% Pd and 25 wt% Cu on hydrothermally synthesized CeO<sub>2</sub>, achieving a NO conversion rate of 45.64% at 250 °C. As the Pd content increased, NO conversion and N<sub>2</sub> selectivity reached 80% and 90% for the Pd-Cu/CeO<sub>2</sub> catalyst.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 4","pages":"336 - 354"},"PeriodicalIF":2.3,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145537789","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}
J. Vasantha Madhuri, Boya Venkata Swamy, M. Sudha, Ramesh Kumar Gajula, Police Vishnu Vardhan Reddy, Amrita Saha
{"title":"Synergetic Effect of Fe Decorated Mn2O3 Support in Application of Aerobic Benzyl Alcohol Oxidation Reaction","authors":"J. Vasantha Madhuri, Boya Venkata Swamy, M. Sudha, Ramesh Kumar Gajula, Police Vishnu Vardhan Reddy, Amrita Saha","doi":"10.1007/s10563-025-09458-1","DOIUrl":"10.1007/s10563-025-09458-1","url":null,"abstract":"<div><p>Developing active lower Mn −based metal oxides through the addition of non−noble metal oxides like Fe<sub>2</sub>O<sub>3</sub> as a promoter is the most cost−effective technique for generating active heterogeneous catalysts for diverse oxidation processes. In this paper, we provide Fe<sub>2</sub>O<sub>3</sub>−Mn<sub>2</sub>O<sub>3</sub> mixed oxides for the aerobic oxidation of benzyl alcohol (BA) into benzaldehyde (BZA) in the absence of a solvent, using molecular O<sub>2</sub>. The insertion of Fe<sub>2</sub>O<sub>3</sub> on Mn<sub>2</sub>O<sub>3</sub> support improves the reducibility of Mn and surface adsorbed oxygen (O<sub>ads</sub>) by forming crystal defects on the Mn<sub>2</sub>O<sub>3</sub> surface via Mn and Fe atom exchanges. Fe<sub>2</sub>O<sub>3</sub> significantly increases the Mn<sub>2</sub>O<sub>3</sub> catalytic activity of the BA catalytic oxidation process. The conversion rate of benzyl alcohol (<i>X</i><sub>BA</sub>) is 3.2 times that of bare Mn<sub>2</sub>O<sub>3</sub>. The structural development of bare Mn<sub>2</sub>O<sub>3</sub> and its varied Fe<sub>2</sub>O<sub>3</sub>−loaded catalysts has been thoroughly studied using spectroscopic techniques such as XPS, P−XRD, BET, and SEM examination. Furthermore, the effect of reaction parameters such as temperature, different wt% of Fe<sub>2</sub>O<sub>3</sub> loading, catalyst quantity, and O<sub>2</sub> flow rates on the BA oxidation reaction has been carefully examined.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 4","pages":"323 - 335"},"PeriodicalIF":2.3,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145537731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Performance, Kinetic and Thermodynamic Study of Cobalt (II) Phosphate as a Promising Catalyst for Organic Dyes Removal","authors":"Djaafar Meziani, Yasmina Roumila, Nesrine Khesrani, Djamila Ould Larbi, Faouzi Saib, Mohamed Trari","doi":"10.1007/s10563-025-09457-2","DOIUrl":"10.1007/s10563-025-09457-2","url":null,"abstract":"<div><p>Cobalt phosphate Co<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> (CoPO) was synthesized by wet chemical method in the presence of oxalate for its application as a heterogeneous Fenton-like catalyst to remove Basic Yellow 28 (BY-28) dye from water. The formation of the CoPO phase was confirmed by XRD analysis, revealing a crystallite size of 27 nm. The optimal synthesis temperature was found to be 800 °C based on thermal analysis. The modified synthesis method allows for obtaining a homogeneous distribution of spherical grains with surface area of 3.78 m<sup>2</sup> g<sup>−1</sup>. The catalytic activity is attributed to hydroxyl radicals (HO·) generated through the activation of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). The degradation rate decreased to 10% after 300 min in the presence of 500 mM tert-butyl alcohol (TBA), a well-known HO· scavenger. Several reaction parameters influencing the Fenton-like process were investigated and the highest BY-28 degradation yield was achieved under neutral pH with a CoPO dose of 1.25 g/L and H<sub>2</sub>O<sub>2</sub> concentration of 50 mM. The catalyst was successfully reused five times, maintaining a removal efficiency of 80% after 60 min with a good crystallinity revealed by XRD analysis. Moreover, other organic dyes commonly found in the textile wastewater were also degraded. The kinetic study revealed that the degradation reaction of BY-28 follows the Behnajady-Modirshahla-Ghanbery (BMG) model, while the thermodynamic analysis indicated that the process is non-spontaneous and endothermic. This study offers valuable insights into the performance, kinetics, and thermodynamics of cobalt phosphate-based Fenton-like catalysts for the degradation of organic dyes, highlighting their potential as effective candidates for such applications.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 3","pages":"284 - 296"},"PeriodicalIF":2.3,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Photocatalytic Degradation of Parcetamol and Ofloxacin by TiO2/Co0.6Cu0.25Zn0.15Fe2O4 Heterostructure Under Real Sunlight","authors":"Rostom Lakhdar, Nahla Dhen, Kais elghniji","doi":"10.1007/s10563-025-09454-5","DOIUrl":"10.1007/s10563-025-09454-5","url":null,"abstract":"<div><p>In this study, a magnetic TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> heterostructure was developed in an attempt to degrade pharmaceutical drugs and to enable separation of the catalyst from the wastewater after the process. Magnetic nanoparticles Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> are obtained by co-precipitation method using (cetyltrimethylammonium bromide, CTAB) as surfactant. Further, the Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> nanoparticles are mixed from the very beginning with the titanium precursor solution. The calcination crystallizes the TiO<sub>2</sub> and promotes the jonction of magnetic nanoparticles to the surface of titania. X-ray diffraction and Raman confirm that the TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> heterostructure consists of consists of Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> and TiO₂ phases without any additional peaks, indicating a successful integration of the two materials. The integration of Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> with TiO<sub>2</sub> leads to non-uniform distribution of spherical particles. Spectra of UV-Vis absorption of the TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> displays a notable redshift compared to pure TiO₂. The photocatalytic effect of the TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> in two applied pharmaceutical drugs was higher than in commercial Degussa P-25 and TiO<sub>2</sub> under real sunlight. It was reported that TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> had 94.2% degradation on paracetamol and complete degradation for ofloxacin within 150 min. The improvement in the photocatalytic activity can be attributed to the efficient charge carrier separation at the interface of TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> heterostructure. A possible photocatalytic mechanism for drugs degradation by TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> was proposed based on the results of trapping experiments and the energy bands of TiO<sub>2</sub> and Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub>. The recyclability of the photocatalyst was ascertained over five consecutive cycles, indicating the stability of the catalyst.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 3","pages":"268 - 283"},"PeriodicalIF":2.3,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869024","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}
Qiuyun Zhang, Yanhui Lei, Jialu Wang, Yutao Zhang, Peihua Ma
{"title":"Zeolitic Imidazolate Frameworks-Based Materials for Accelerating Sustainable Biodiesel Production: A Mini Review","authors":"Qiuyun Zhang, Yanhui Lei, Jialu Wang, Yutao Zhang, Peihua Ma","doi":"10.1007/s10563-025-09453-6","DOIUrl":"10.1007/s10563-025-09453-6","url":null,"abstract":"<div><p>The need for sustainable and eco-friendly fuel alternatives has grown due to practical considerations in recent years. Biodiesel has garnered significant interest as a promising petroleum diesel substitute due to its renewability, biodegradability, and free of sulfur. However, developing advanced and highly efficient heterogeneous catalysts is crucial in the biodiesel production. Among various heterogeneous catalysts, metal–organic frameworks (MOFs) have become the key catalytic materials because of their distinctive and fascinating characteristics. Among the currently explored MOFs, ZIFs have undergone many studies, including catalysis, separation, and sensing, owing their simple and fast preparation process, ultrahigh surface areas, and well-defined active sites. In this review article, the current advances of different types of MOF-based catalysts to accelerate biodiesel production have been discussed. More importantly, it aims to summarize critically the performance, characterization, and reusability of various ZIFs-based catalysts (single ZIFs catalysts, supported ZIFs-based catalysts, and ZIFs-derived catalysts) in catalyzing the production of sustainable biodiesel. Finally, the limitations, the challenges, and future developments of ZIFs-based hybrid catalysts are also proposed, hoping that this timely review can be useful for researchers in promoting sustainable biodiesel generation and other relevant biorefineries using ZIFs-based catalysts.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 3","pages":"195 - 214"},"PeriodicalIF":2.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868957","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}
Vitisha V. Vikhe, Amruta K. Mhaske, Vitthal K. Vikhe, Bhagwat K. Uphade, Anil G. Gadhave
{"title":"Fe3O4@HNTs-Cellulose-HClO4: New Heterogeneous Catalyst for Smooth and Effective Synthesis of 4H-Pyran and 4H-Chromene Derivatives","authors":"Vitisha V. Vikhe, Amruta K. Mhaske, Vitthal K. Vikhe, Bhagwat K. Uphade, Anil G. Gadhave","doi":"10.1007/s10563-025-09452-7","DOIUrl":"10.1007/s10563-025-09452-7","url":null,"abstract":"<div><p>This study involved the fabrication of a novel catalyst based on natural clay via straightforward co-precipitation technique. Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles and cellulose covalently grafted onto the Halloysite nanotubes (HNTs) after being functionalized with perchloric acid (Fe<sub>3</sub>O<sub>4</sub>@HNTs-Cellulose-HClO<sub>4</sub>). It was characterized by using different analytical techniques to confirm its formation, including Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD) pattern, Energy dispersive X-ray (EDAX) analysis, Thermogravimetric analysis (TGA), and Scanning electron microscopy (SEM). This novel heterogeneous catalyst was effectively applied in the synthesis of 4-aryl-4H-pyran-3-carboxylate using an aromatic aldehyde, ethyl acetoacetate and malononitrile and Tetrahydro-4H-chromene using an aromatic aldehyde, dimedone and ethyl cyanoacetate. Gentle reaction parameters, minimal catalyst costs, environmental friendliness, and excellent product yields (97 & 96% respectively) are some of the primary advantages of this approach. The catalyst is easily separated and can be recycled five times without experiencing a noticeable decrease in activity and the hot filtration test demonstrated the catalyst’s heterogeneity. With mild reaction conditions and room temperature, easy purification, simple workup, and excellent yields this heterogeneous catalyst demonstrated high efficiency in green media.</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 3","pages":"249 - 267"},"PeriodicalIF":2.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868922","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}
Huanjin Jiang, Jie Yang, Wenhao Wang, Hailong Fang, Jixiang Chen
{"title":"Resorcinol–Formaldehyde Resin and Sodium Dodecyl Sulfate Co-assisted Mesoporous TiO2 Supported Ni3Sn2 Intermetallic Compound Catalysts for In-Situ Hydrodeoxygenation of Methyl Palmitate with Methanol as the Hydrogen Donor in Water","authors":"Huanjin Jiang, Jie Yang, Wenhao Wang, Hailong Fang, Jixiang Chen","doi":"10.1007/s10563-025-09451-8","DOIUrl":"10.1007/s10563-025-09451-8","url":null,"abstract":"<div><p>TiO<sub>2</sub> supported Ni<sub>3</sub>Sn<sub>2</sub> intermetallic compound (IMC) catalysts were prepared by the coprecipitation method using resorcinol–formaldehyde resin (RF) and sodium dodecyl sulfate (SDS) as templates, and they were tested for in situ hydrodeoxygenation (HDO) of methyl palmitate using methanol as the hydrogen donor in the aqueous phase. It has been found that introducing SDS and RF enhances specific surface area, pore volume and pore diameter and reduces the Ni<sub>3</sub>Sn<sub>2</sub> IMC particles and their electronic interaction with TiO<sub>2</sub>. In in situ HDO of methyl palmitate, the catalysts prepared with co-introducing RF and SDS exhibit higher activity than that without templates and those separately introducing RF and SDS. The catalyst activity is mainly related to the Ni<sub>3</sub>Sn<sub>2</sub> IMCs particles size and the degree of the electronic interaction between Ni<sub>3</sub>Sn<sub>2</sub> and TiO<sub>2</sub>. The catalyst with introducing a suitable amount of RF and SDS gives the n-pentadecane yield of 87.3% at 330 °C, and it is slightly deactivated after reaction for five times due to carbon deposition and the sintering of Ni<sub>3</sub>Sn<sub>2</sub> IMC particles.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 3","pages":"236 - 248"},"PeriodicalIF":2.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868887","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}
Abdull Hafidz Hassan, Muzakkir Mohammad Zainol, Mohd Asmadi
{"title":"Experimental and Comparative Analysis on Properties and Performance of SO₃H-Functionalized Carbon Catalyst in Ethyl Levulinate Synthesis from Levulinic Acid","authors":"Abdull Hafidz Hassan, Muzakkir Mohammad Zainol, Mohd Asmadi","doi":"10.1007/s10563-025-09449-2","DOIUrl":"10.1007/s10563-025-09449-2","url":null,"abstract":"<div><p>Hydrothermal sulfonation is a method that introduces sulfonic acid groups as active sites onto suitable support materials under autogenous pressure conditions. In this work, the effectiveness of hydrothermal sulfonation was studied on various lignin-carbons prepared at different thermal conditions of 400–600 °C for 1 and 2 h. The sulfonated lignin-carbon catalysts produced were characterized and evaluated for their catalytic performance in levulinic acid (LA) esterification under selected reaction conditions to synthesize ethyl levulinate (EL). The catalyst with the highest EL yield and LA conversion was selected for extended reaction time (1–6 h) to study the time-dependent performance in LA esterification. The influence of catalyst acidity and the surface area of the prepared catalysts on the reaction behavior was assessed and further analyzed through an extensive comparative study with related literature. The results indicated that all lignin-carbon catalysts exhibited enhanced porous structures and surface areas of 193–368 m²/g, along with amorphous characteristics. Additionally, a reduction in catalyst acidity was observed, decreasing from 1.3 to 0.5 mmol/g as the thermal conditions of lignin-carbon preparation increased. The catalytic activity was found to decrease for lignin-carbon prepared at higher thermal conditions. The catalyst performance achieved 75.9 mol% EL yield (TOF of 0.02 s⁻¹) with 76.5% LA conversion, and the EL yield increased to 81.1 mol% when the reaction time was extended to 5 h. The carbon catalyst can be reused over five reaction cycles with a decrease in EL yield from 81.1 mol% to 62.2 mol%. In comparative study, catalyst acidity plays an important role in catalyzing the esterification reaction of levulinic acid to ethyl levulinate, serving as a key design indicator for carbon-based catalysts. Catalyst acidity showed a positive correlation with reaction performance, and further increases in surface area (> 200 m²/ g) did not significantly enhance reaction performance. Besides, hydrothermal sulfonation demonstrated potential as a catalyst modification method and could be recommended for carbon-based catalyst preparation.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 3","pages":"215 - 235"},"PeriodicalIF":2.3,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"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}