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Vietnam Journal of Catalysis and Adsorption最新文献

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Synthesis and photocatalytic activity evaluation of Au/g-C3N4 material for hydrogen evolution reaction Au/g-C3N4析氢材料的合成及光催化活性评价
Vietnam Journal of Catalysis and Adsorption Pub Date : 2022-12-11 DOI: 10.51316/jca.2022.064
H. V. Giap, N. Steinfeldt, Mai Nguyen Thi Tuyet
{"title":"Synthesis and photocatalytic activity evaluation of Au/g-C3N4 material for hydrogen evolution reaction","authors":"H. V. Giap, N. Steinfeldt, Mai Nguyen Thi Tuyet","doi":"10.51316/jca.2022.064","DOIUrl":"https://doi.org/10.51316/jca.2022.064","url":null,"abstract":"In this research, we report on the synthesis of Au/g-C3N4 material and study the effect of Au deposition on g-C3N4to optimize its photocatalytic performance. The presence of Au significantly enhances the light absorption and reduces the recombination rate of electron-hole pairs leading to improve the H2 evolution efficiency. The highly improved efficiency is also due to the efficient transfer of photoelectrons between the g-C3N4and Au molecules. The report indicates that the chemical reduction method to deposit gold nanoparticles on g-C3N4is an appropriate method with significant photocatalytic efficiency. The results open up another path for the synthesis of Au/g-C3N4for hydrogen evolution applications.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"223 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76688840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of bimetallic Ag-Au nanoparticles for surface-enhanced Raman scattering spectroscopy 用于表面增强拉曼散射光谱的双金属Ag-Au纳米颗粒的合成
Vietnam Journal of Catalysis and Adsorption Pub Date : 2022-12-11 DOI: 10.51316/jca.2022.063
Mai Nguyen Thi Tuyet, Hoai Hoang Thi Thu, Huy Nguyen Le, Hoai Tran Thanh, Hai Phan Van
{"title":"Synthesis of bimetallic Ag-Au nanoparticles for surface-enhanced Raman scattering spectroscopy","authors":"Mai Nguyen Thi Tuyet, Hoai Hoang Thi Thu, Huy Nguyen Le, Hoai Tran Thanh, Hai Phan Van","doi":"10.51316/jca.2022.063","DOIUrl":"https://doi.org/10.51316/jca.2022.063","url":null,"abstract":"In this report, bimetallic Au-Ag nanoparticles were successfully prepared by a chemical strategy using binary reduction agents. The metal ratio in bimetallic nanoparticles can be easily tuned by controlling the metal precursor ratio. Using Rhodamine as a probe molecule, we investigated the surface-enhanced Raman scattering (SERS) activity of synthesized bimetallic Au-Ag nanoparticles. The results demonstrate that our materials allow to enhance about 2×106 times the Raman signal of Rhodamine. Hence, the combination of unique features of two plasmonic metals opens up exciting prospects for the design of an ultra-sensitive sensor based on SERS.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87063256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of inorganic polymer sodium aluminum silicate system based on sodium silicate and application as film forming agent for silicate paint 以硅酸钠为基料的无机聚合物硅酸钠铝体系的合成及其在硅酸盐涂料成膜剂中的应用
Vietnam Journal of Catalysis and Adsorption Pub Date : 2022-11-05 DOI: 10.51316/jca.2022.062
Cuong Le Manh, Nguyet Tran Thi Minh, Lan Anh Luu Thi, Khanh Bui Xuan, Than Nguyen Hoang
{"title":"Synthesis of inorganic polymer sodium aluminum silicate system based on sodium silicate and application as film forming agent for silicate paint","authors":"Cuong Le Manh, Nguyet Tran Thi Minh, Lan Anh Luu Thi, Khanh Bui Xuan, Than Nguyen Hoang","doi":"10.51316/jca.2022.062","DOIUrl":"https://doi.org/10.51316/jca.2022.062","url":null,"abstract":"In this study, sodium aluminum silicate inorganic polymer was synthesized by sol-gel method. The parameters affecting the polymer formation were also investigated. Polymers with optimal parameters have been applied to make high temperature resistant inorganic paints. Modified infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and X-ray diffraction (XRD) methods were used to investigate the characteristics of the paint film. Furthermore, the mechanical and mechanical properties of heat-resistant inorganic paints and their heat resistance were also investigated.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89941900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication of the superhydrophobic and oleophilic graphene-based sponge for the treatment of oil- and organic solvent-contaminated wastewater 超疏水亲油石墨烯基海绵处理含油及有机溶剂污染废水的制备
Vietnam Journal of Catalysis and Adsorption Pub Date : 2022-11-05 DOI: 10.51316/jca.2022.061
Luong Tran Duc, Quyen Mai Le, Mui Pham Thi Thu
{"title":"Fabrication of the superhydrophobic and oleophilic graphene-based sponge for the treatment of oil- and organic solvent-contaminated wastewater","authors":"Luong Tran Duc, Quyen Mai Le, Mui Pham Thi Thu","doi":"10.51316/jca.2022.061","DOIUrl":"https://doi.org/10.51316/jca.2022.061","url":null,"abstract":"Graphene, a 2D nanomaterial, has been extensively studied and applied in many applications including, but not limited to, energy storage, environmental treatment, additives for paints, rubber, and composite, sensors, and electronic devices. In this work, graphene-based sponge was facilely fabricated by simply immersing melamine sponge into well-dispersed graphene nanoplaletes solution. The prepared graphene sponge revealed superhydrophobic and oleophillic properties in nature. The graphene-based sponge showed remarkable adsorption performance toward oils and organic solvents with the adsorption capacity ranging from 40 to 70 folds of sponge’s weight. The sponge also exhibited high recyclability, which is considered as a promising material for the practical application.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80631167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rh-supported ionic-liquid catalysts on TiO2 for the conversion of Ethylene to propanol TiO2上铑负载离子液体催化剂催化乙烯制丙醇
Vietnam Journal of Catalysis and Adsorption Pub Date : 2022-10-16 DOI: 10.51316/jca.2022.058
Lam Vu Tung, Hung Trinh Ba, T. Le Minh
{"title":"Rh-supported ionic-liquid catalysts on TiO2 for the conversion of Ethylene to propanol","authors":"Lam Vu Tung, Hung Trinh Ba, T. Le Minh","doi":"10.51316/jca.2022.058","DOIUrl":"https://doi.org/10.51316/jca.2022.058","url":null,"abstract":"Rhodium catalyst systems for hydroformylation has been researched widely in the literature. Using ionic liquid for rhodium-supported catalyst facilitates this reaction. In this work, TiO2 support was first time used. From the FT-IR, EPR, and surface area analysis, the components of supported ionic liquid phase can be seen after the impregnation of ionic liquid into the support’s porous structure. The main product for the ethylene conversion is propan-2-ol, as a subsequent hydrogenation product after hydroformylation. Pressure and temperature difference are evaluated to understand the influence on selectivity and product formation.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78278299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A comparative study on the catalytic activities of the SrTiO3 perovskite and oxide CuO-ZnO mixed oxides for the oxidative coupling of methane SrTiO3钙钛矿与氧化CuO-ZnO混合氧化物对甲烷氧化偶联催化活性的比较研究
Vietnam Journal of Catalysis and Adsorption Pub Date : 2022-10-16 DOI: 10.51316/jca.2022.060
Hung Nguyen Thanh, Phuong Pham Thi Mai, To Dang Thi, T. Le Minh
{"title":"A comparative study on the catalytic activities of the SrTiO3 perovskite and oxide CuO-ZnO mixed oxides for the oxidative coupling of methane","authors":"Hung Nguyen Thanh, Phuong Pham Thi Mai, To Dang Thi, T. Le Minh","doi":"10.51316/jca.2022.060","DOIUrl":"https://doi.org/10.51316/jca.2022.060","url":null,"abstract":"In this study, SrTiO3 catalyst was prepared by sol-gel method and CuO-ZnO by co-precipitation for oxidative coupling of methane (OCM). The results showed that the conversion rate in the SrTiO3 sample was high (about 35%) at 850 oC, and the product C2H4 with an yield of 0.12%. Several modern analytical methods such as XRD, BET, TPx, SEM have been characterized. The XRD results showed a stable phase structure and high crystallinity with both samples. NH3-TPD recorded weak acid centers on SrTiO3, leading to coke formation on the impact surface. H2-TPR and O2-TPD express the redox of CuO-ZnO, resulting in a deep oxidation product of CO2. Factors affecting the ratio of C2H6 and C2H4 were also considered.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75749806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of some imidazolium based ionic liquids and influence of some factors on reaction yields 咪唑类离子液体的合成及其影响因素
Vietnam Journal of Catalysis and Adsorption Pub Date : 2022-10-16 DOI: 10.51316/jca.2022.059
Uong T.N. Ha, Ngoc C. Pham, Dung Hoang Thị Kim, Van Tang Ngoc Thanh, T. T. Bui
{"title":"Synthesis of some imidazolium based ionic liquids and influence of some factors on reaction yields","authors":"Uong T.N. Ha, Ngoc C. Pham, Dung Hoang Thị Kim, Van Tang Ngoc Thanh, T. T. Bui","doi":"10.51316/jca.2022.059","DOIUrl":"https://doi.org/10.51316/jca.2022.059","url":null,"abstract":"In this paper, three imidazolium ionic liquids 1-methyl -3-n-tetradecylimidazolium chloride ([C14MIM]Cl), 1-n-butyl -3-n-butylimidazolium chloride ([C4BIM]Cl), and 1-n-butyl-3-n-tetradecylimidazolium chloride ([C14BIM]Cl) with different alkyl chain lengths were synthesized and characterized by infrared, 1H-NMR and 13C-NMR NMR and nuclear magnetic resonance, and mass spectra. The effect of structure of alkyl chloride and imidazole compounds on the synthesis yield was evaluated. In addition, the effects of reaction conditions such as temperature, time, and molar ratio of reactants on the synthesis yield were also investigated to find out suitable conditions for the synthesis processes.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89059248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Synthesis of WO3/AgI photocatalysts applying for degradation of antibiotics in water 水中抗生素降解用WO3/AgI光催化剂的合成
Vietnam Journal of Catalysis and Adsorption Pub Date : 2022-10-16 DOI: 10.51316/jca.2022.054
Tung Mai Hung Thanh, The Do Minh, Hien Tran Thị Thu, Chi Nguyen Thi Phuong Le, Quoc Nguyen Tri, Binh Nguyen Thi Thanh, Mai Nguyen Vu Ngoc, Hiep Phan Phuoc Minh, Cam Nguyen Thi Dieu
{"title":"Synthesis of WO3/AgI photocatalysts applying for degradation of antibiotics in water","authors":"Tung Mai Hung Thanh, The Do Minh, Hien Tran Thị Thu, Chi Nguyen Thi Phuong Le, Quoc Nguyen Tri, Binh Nguyen Thi Thanh, Mai Nguyen Vu Ngoc, Hiep Phan Phuoc Minh, Cam Nguyen Thi Dieu","doi":"10.51316/jca.2022.054","DOIUrl":"https://doi.org/10.51316/jca.2022.054","url":null,"abstract":"In this paper, AgI was successfully synthesized in the presence of WO3 to form AgI/WO3 Z scheme hetero-junction by solid-phase heating method and by varying the WO3 mole ratio (1:0.5, 1:1, 1:2 and 1:3) with respect to the AgI. The PL spectra indicate that the introduction of WO3 to AgI can efficiently suppress the recombination of photo-generated charge carrier. The photocatalytic activity of WO3/AgI was investigated under visible light by using the Amoxicillin (AMX) antibiotic as an organic target in aqueous solution. The WO3/AgI photoactivity for AXM was greatly enhanced when both materials were coupled to form a Z-scheme system. The highest degradation percentage was reached using the WO3/AgI material ratio mole of 1/1. As compared with to the pure WO3 and AgI, the WO3/AgI hybrid material show remarkably improved visible-induced photocatalytic activities in degrading AMX for the enhanced transport ability of electrons and holes.  ","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77948485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of WO3/Ag3VO4 photocatalyst with enhanced visible light efficiency photocatalysis 增强可见光效率的WO3/Ag3VO4光催化剂的合成
Vietnam Journal of Catalysis and Adsorption Pub Date : 2022-10-16 DOI: 10.51316/jca.2022.053
Chi Nguyen Thi Phuong Le, Phuong Tran Thi Thu, The Do Minh, Quoc Nguyen Tri, Binh Nguyen Thi Thanh, Hien Tran Thị Thu, Tung Mai Hung Thanh, Mai Nguyen Vu Ngoc, Dieu Phan Thi, Cam Nguyen Thi Dieu
{"title":"Synthesis of WO3/Ag3VO4 photocatalyst with enhanced visible light efficiency photocatalysis","authors":"Chi Nguyen Thi Phuong Le, Phuong Tran Thi Thu, The Do Minh, Quoc Nguyen Tri, Binh Nguyen Thi Thanh, Hien Tran Thị Thu, Tung Mai Hung Thanh, Mai Nguyen Vu Ngoc, Dieu Phan Thi, Cam Nguyen Thi Dieu","doi":"10.51316/jca.2022.053","DOIUrl":"https://doi.org/10.51316/jca.2022.053","url":null,"abstract":"WO3/Ag3VO4photocatalyst was synthesized for benefiting the visible region of solar spectrum for degradation of antibiotic pollutant. The prepared catalyst was characterized by using scanning electron microscope (SEM), X-ray diffraction (XRD), infrared spectroscopy (IR) and energy-dispersive X-ray spectroscopy (EDX). The photocatalytic performance of material was evaluated by the photoredution of degradation of Amoxicillin (AMX) antibiotic under visible light. Results show that the obtained WO3/Ag3VO4photocatalyst can significantly enhance photocatalytic activity in comparison with the pure WO3 and Ag3VO4. The enhanced photocatalytic activity of WO3/Ag3VO4 was predominantly attributed to the synergistic effect which increased visible-light absorption and facilitated the efficient separation of photoinduced electrons and holes.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73347385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Perspective on Metal Single Atom- Based Electrocatalytsts towards Hydrogen Peroxide Production 金属单原子电催化剂在过氧化氢生产中的应用前景
Vietnam Journal of Catalysis and Adsorption Pub Date : 2022-10-16 DOI: 10.51316/jca.2022.052
Thi Hong Chuong Nguyen, Hieu Le Trung, Son Le Lam, M. T. Nguyen Dinh, Chinh-Chien Nguyen, Q. Le Van
{"title":"A Perspective on Metal Single Atom- Based Electrocatalytsts towards Hydrogen Peroxide Production","authors":"Thi Hong Chuong Nguyen, Hieu Le Trung, Son Le Lam, M. T. Nguyen Dinh, Chinh-Chien Nguyen, Q. Le Van","doi":"10.51316/jca.2022.052","DOIUrl":"https://doi.org/10.51316/jca.2022.052","url":null,"abstract":"The green production of hydrogen peroxide has attracted considerable attention owing to the urge for an alternative production method to the current production. Electrocatalytic reduction via the 2e- pathway has emerged as the brightest approach. However, the finding of catalysts with high efficiency and selectivity to provide a proper interaction between active sites and *OOH is remaining as the primary obstacle. Employing metal single-atom catalysts (SACs) offers a potential manner to address those challenges. The presented review aims to provide cutting-edge development of a single metal catalyst for electrocatalytic H2O2 production. Also, perspective is laid out to propose novel approaches for material development in the future","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78752764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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