In this work we report the synthesis of ZnO-ZrO2 and vanadium doped ZnO-ZrO2 (V/ZnO-ZrO2) nanocomposite materials by a sol–gel processing technique. The molar ratio between ZnO and ZrO2 is 3 : 4, the molar percentage of vanadium doped (relative to ZrO2) varies from 3% to 9%. The obtained materials were characterized by XRD, SEM, UV-Vis, BET, EDX. XRD data identified phase of the ZnO and phase of ZrO2 in all obtained samples. The average crystallite size of the samples was between 18 to 20 nm. UV-Vis spectra showed that the band gap energy decreased by the doping of Vanadium. The EDX result of ZZV347S indicated doping efficiency equal 91,29%. The photocatalytic activities of nanocompsite materials were evaluated by the photocatalytic degradation of phenol under UV light. The highest photocatalytic efficiency for phenol degradation was achieved through ZZV343S catalyst after 180 minutes.
{"title":"Synthesis, characterization, and photocatalytic application of V/ZnO-ZrO2","authors":"Thao Pham Thi Minh, Huong Do Thi, Hai Le Thi Hong","doi":"10.51316/jca.2022.036","DOIUrl":"https://doi.org/10.51316/jca.2022.036","url":null,"abstract":"In this work we report the synthesis of ZnO-ZrO2 and vanadium doped ZnO-ZrO2 (V/ZnO-ZrO2) nanocomposite materials by a sol–gel processing technique. The molar ratio between ZnO and ZrO2 is 3 : 4, the molar percentage of vanadium doped (relative to ZrO2) varies from 3% to 9%. The obtained materials were characterized by XRD, SEM, UV-Vis, BET, EDX. XRD data identified phase of the ZnO and phase of ZrO2 in all obtained samples. The average crystallite size of the samples was between 18 to 20 nm. UV-Vis spectra showed that the band gap energy decreased by the doping of Vanadium. The EDX result of ZZV347S indicated doping efficiency equal 91,29%. The photocatalytic activities of nanocompsite materials were evaluated by the photocatalytic degradation of phenol under UV light. The highest photocatalytic efficiency for phenol degradation was achieved through ZZV343S catalyst after 180 minutes.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"102 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79516255","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}
Thuy Mai Thi Thanh, Van Anh Nguyen Thi, Xuan Mai Thi, Binh Phan Thi
This research aims to synthesize MoS2 thin film for the hydrogen evolution reaction (HER) by the electrochemical way. We investigated various electrochemical conditions, including the pH of electrolyte, the applied current density, and electrolysis time to find optimal synthesis mode. The obtained samples were characterized by scanning electron microscopy (SEM) images and X-ray diffraction (XRD) patterns to determine the morphology and crystal structure. The polarization curve confirmed the HER activity of MoS2 thin film. The results indicated that the synthesized MoS2 film had a perfect catalytic activity, as shown by the overpotential value at 10 mA/cm2 and Tafel slope reached 144 mV and 56.2 mV/dec, respectively.
{"title":"Synthesis of molybdenum disulfide for the hydrogen evolution reaction electrocatalysts activity by electrochemical method","authors":"Thuy Mai Thi Thanh, Van Anh Nguyen Thi, Xuan Mai Thi, Binh Phan Thi","doi":"10.51316/jca.2022.037","DOIUrl":"https://doi.org/10.51316/jca.2022.037","url":null,"abstract":"This research aims to synthesize MoS2 thin film for the hydrogen evolution reaction (HER) by the electrochemical way. We investigated various electrochemical conditions, including the pH of electrolyte, the applied current density, and electrolysis time to find optimal synthesis mode. The obtained samples were characterized by scanning electron microscopy (SEM) images and X-ray diffraction (XRD) patterns to determine the morphology and crystal structure. The polarization curve confirmed the HER activity of MoS2 thin film. The results indicated that the synthesized MoS2 film had a perfect catalytic activity, as shown by the overpotential value at 10 mA/cm2 and Tafel slope reached 144 mV and 56.2 mV/dec, respectively.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74740779","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}
The high durability, re-collectable and low-cost materials with tertiary (reduced graphene-TiO2-Fe3O4, denoted as GrTiFe) components for degradation of toxic organic compounds have been prepared from different precursors by coprecipitation and hydrothermal methods. By this procedure, TiO2 and Fe3O4 nanoparticles have been growing on the reduced graphene oxide. The as-synthesized nanocomposites have been characterized with X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope and magnetic hysteresis, and studied on the photo-degradation reaction of Moderacid Black (MDB). The result shows that the photocatalytic activity of as-synthesized composites is much higher than that of pure TiO2 nanoparticles and the composites can be easily collected from water using a magnet for reusing. In addition, the GrTiFe is also able to degrade the organic compounds under modeling sunlight radiation.
{"title":"Synthesis of the high durability photocatalytic materials with tertiary components","authors":"Hung Hoang Van, Thoa Tran Thi","doi":"10.51316/jca.2022.038","DOIUrl":"https://doi.org/10.51316/jca.2022.038","url":null,"abstract":"The high durability, re-collectable and low-cost materials with tertiary (reduced graphene-TiO2-Fe3O4, denoted as GrTiFe) components for degradation of toxic organic compounds have been prepared from different precursors by coprecipitation and hydrothermal methods. By this procedure, TiO2 and Fe3O4 nanoparticles have been growing on the reduced graphene oxide. The as-synthesized nanocomposites have been characterized with X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope and magnetic hysteresis, and studied on the photo-degradation reaction of Moderacid Black (MDB). The result shows that the photocatalytic activity of as-synthesized composites is much higher than that of pure TiO2 nanoparticles and the composites can be easily collected from water using a magnet for reusing. In addition, the GrTiFe is also able to degrade the organic compounds under modeling sunlight radiation.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87852726","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}
This paper presents the results of research and fabrication of a layer of material that adsorbs some toxic gases that stimulate acidic respiration and the smoke and dust generated by the fire. Methods used: SEM- EDS; determining the BET surface area; the protection time with benzene and HCl vapor on the dynamic adsorption device DPC5... The results showed that the additively impregnated activated carbon cloth filter material has a specific surface area in BET of 697 m2 /g, has a protection time against benzene vapor of 34 minutes; protection time with HCl acid vapor is 33 minutes and the ability to filter smoke particles reached 94%. The filter material made from coconut shell activated carbon has a surface area calculated according to BET being 664 m2/g, has a protection time with benzene vapor (L= 5 cm, Co = 18 mg/L) of 56 minutes; protection time with HCl acid vapor (L= 5 cm, Co= 1.1 mg/L) is 280 minutes. Construction of Xylop curve determines the ability to filter benzene vapor and the ability to filter HCl acid vapor shows. This material has potential for the use in the manufacture of personal respiratory protection and environmental remediation.
本文介绍了一种吸附一些刺激酸性呼吸的有毒气体和火灾产生的烟尘的材料层的研究和制造结果。方法:SEM- EDS;确定BET表面积;动态吸附装置DPC5对苯和盐酸蒸气的保护时间。结果表明:添加剂浸渍活性炭布滤料在BET中的比表面积为697 m2 /g，对苯蒸气的保护时间为34 min;对HCl酸蒸汽的保护时间为33分钟，对烟雾颗粒的过滤能力达到94%。椰壳活性炭滤料按BET计算表面积为664 m2/g，对苯蒸气(L= 5 cm, Co = 18 mg/L)的保护时间为56分钟;HCl酸蒸气(L= 5 cm, Co= 1.1 mg/L)保护时间为280分钟。Xylop曲线的构造决定了对苯蒸气的过滤能力和对HCl酸蒸气的过滤能力。该材料在制造个人呼吸防护和环境修复方面具有潜在的应用价值。
{"title":"Research and manufacture toxic gas filter materials on the basis of activated carbon impregnated with additives used in the manufacture of fire escape masks","authors":"Tai Bui Van, Chung Tran Van, Tai Phung Chi","doi":"10.51316/jca.2022.039","DOIUrl":"https://doi.org/10.51316/jca.2022.039","url":null,"abstract":"This paper presents the results of research and fabrication of a layer of material that adsorbs some toxic gases that stimulate acidic respiration and the smoke and dust generated by the fire. Methods used: SEM- EDS; determining the BET surface area; the protection time with benzene and HCl vapor on the dynamic adsorption device DPC5... The results showed that the additively impregnated activated carbon cloth filter material has a specific surface area in BET of 697 m2 /g, has a protection time against benzene vapor of 34 minutes; protection time with HCl acid vapor is 33 minutes and the ability to filter smoke particles reached 94%. The filter material made from coconut shell activated carbon has a surface area calculated according to BET being 664 m2/g, has a protection time with benzene vapor (L= 5 cm, Co = 18 mg/L) of 56 minutes; protection time with HCl acid vapor (L= 5 cm, Co= 1.1 mg/L) is 280 minutes. Construction of Xylop curve determines the ability to filter benzene vapor and the ability to filter HCl acid vapor shows. This material has potential for the use in the manufacture of personal respiratory protection and environmental remediation.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"230 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80249870","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}
The novel composite nanomaterials were synthesized via a simple method from two natural clay mineral sources, graphite and halloysite. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR), Brunauer-Emmet-Teller (BET) methods. The results showed that halloysite nanotubes are successfully intercalated between the graphene oxide layers. The adsorption capacity of the material with RY-145, a typical dye in textile wastewater, was evaluated. Also, the effects of adsorption time, initial concentration of pollutant, adsorbent dosage, speed of agitation and temperature were investigated. The adsorption efficiency of the material for RY-145 dye is about 99% after 4 hours with the high initial concentration of pollutant of 50ppm. Adsorption kinetics of the material for RY-145 match the pseudo-second order kinetic of Langmuir adsorption model. The outstanding performance of the nanocomposite as an adsorbent highlight the promising applications of the novel material in was water treatment processes.
{"title":"Highly efficient adsorption of dye with novel reduced graphene oxide/halloysite nanocomposite","authors":"Ngo Ha-Son, Linh Nguyen Thi","doi":"10.51316/jca.2022.040","DOIUrl":"https://doi.org/10.51316/jca.2022.040","url":null,"abstract":"The novel composite nanomaterials were synthesized via a simple method from two natural clay mineral sources, graphite and halloysite. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR), Brunauer-Emmet-Teller (BET) methods. The results showed that halloysite nanotubes are successfully intercalated between the graphene oxide layers. The adsorption capacity of the material with RY-145, a typical dye in textile wastewater, was evaluated. Also, the effects of adsorption time, initial concentration of pollutant, adsorbent dosage, speed of agitation and temperature were investigated. The adsorption efficiency of the material for RY-145 dye is about 99% after 4 hours with the high initial concentration of pollutant of 50ppm. Adsorption kinetics of the material for RY-145 match the pseudo-second order kinetic of Langmuir adsorption model. The outstanding performance of the nanocomposite as an adsorbent highlight the promising applications of the novel material in was water treatment processes.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74807807","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}
T. Nguyen Duy, Vinh Nguyen Huu, Le Pham Hoang Ai, Trang Pham Quynh, Huy Tran Huu, Quang Tran Huu, Tuyến Nguyễn Văn
In this study, the photocatalytic degradation of rhodamine b (RhB) is investigated over metal-organic framework materials based on bismuth and trimesic acid (Bi-BTC) with different metal-to-ligand molar ratios. All obtained products are characterized by using powder X-ray diffraction, scanning electron microscopy, and UV–vis diffuse reflectance spectroscopy. It is found that decreasing the metal-to-ligand ratio below 1:1 produces high crystallinity and long rod-like crystals of Bi-BTC. For the metal-to-ligand molar ratios 5:1 and 1:1, we obtain low crystallinity of Bi-BTC. Additionally, a lower metal-to-ligand ratio in the Bi-BTC photocatalyst leads to the higher efficiency compared to other Bi-BTC photocatalysts. The metal-to-ligand ratio of 1:20 (Bi-BTC-0.05) favors the highest efficiency, in which 97.81% rhodamine B (RhB) is removed after 150 min of irradiation. The results should open a new approach to optimize the desired Bi-BTC structure for a target application.
在本研究中，研究了基于铋和三聚酸(Bi-BTC)的不同金属与配体摩尔比的金属-有机骨架材料对罗丹明b (RhB)的光催化降解。所有得到的产品都用粉末x射线衍射，扫描电子显微镜和紫外-可见漫反射光谱进行了表征。研究发现，当金属与配体的比例低于1:1时，Bi-BTC的结晶度较高，晶体呈长棒状。当金属与配体的摩尔比为5:1和1:1时，Bi-BTC的结晶度较低。此外，与其他Bi-BTC光催化剂相比，Bi-BTC光催化剂中金属与配体的比例较低，因此效率更高。金属与配体的比例为1:20 (Bi-BTC-0.05)时效率最高，辐照150 min后，rhodamine B (RhB)的去除率为97.81%。结果将为优化目标应用程序所需的Bi-BTC结构开辟一种新方法。
{"title":"Effect of metal–ligand ratio on the rhodamine B photodegradation activity of metal-organic framework materials based on bismuth and trimesic acid","authors":"T. Nguyen Duy, Vinh Nguyen Huu, Le Pham Hoang Ai, Trang Pham Quynh, Huy Tran Huu, Quang Tran Huu, Tuyến Nguyễn Văn","doi":"10.51316/jca.2022.033","DOIUrl":"https://doi.org/10.51316/jca.2022.033","url":null,"abstract":"In this study, the photocatalytic degradation of rhodamine b (RhB) is investigated over metal-organic framework materials based on bismuth and trimesic acid (Bi-BTC) with different metal-to-ligand molar ratios. All obtained products are characterized by using powder X-ray diffraction, scanning electron microscopy, and UV–vis diffuse reflectance spectroscopy. It is found that decreasing the metal-to-ligand ratio below 1:1 produces high crystallinity and long rod-like crystals of Bi-BTC. For the metal-to-ligand molar ratios 5:1 and 1:1, we obtain low crystallinity of Bi-BTC. Additionally, a lower metal-to-ligand ratio in the Bi-BTC photocatalyst leads to the higher efficiency compared to other Bi-BTC photocatalysts. The metal-to-ligand ratio of 1:20 (Bi-BTC-0.05) favors the highest efficiency, in which 97.81% rhodamine B (RhB) is removed after 150 min of irradiation. The results should open a new approach to optimize the desired Bi-BTC structure for a target application.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81184958","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}
This study describes the results of synthesizing MIL-100(Fe) materials by hydrothermal method. The results show that the material has an octahedral structure, with a large BET surface area (1820 m2/g). The synthesized materials were capable of adsorption more than 53 % of NOx gas and over 84 % of acetone vapor by mass. The crystalline structure and octahedral shape of material were not changed after adsorption. The investigation of re-adsorption show that the material retains its adsorption capacity after many uses.
{"title":"Study on the adsorption capacity of NOx gas and acetone vapor of MIL-100(Fe) synthesized by hydrothermal method","authors":"B. Le Thanh, Phương Nguyễn Thị Hoài, Duong La Duc","doi":"10.51316/jca.2022.029","DOIUrl":"https://doi.org/10.51316/jca.2022.029","url":null,"abstract":"This study describes the results of synthesizing MIL-100(Fe) materials by hydrothermal method. The results show that the material has an octahedral structure, with a large BET surface area (1820 m2/g). The synthesized materials were capable of adsorption more than 53 % of NOx gas and over 84 % of acetone vapor by mass. The crystalline structure and octahedral shape of material were not changed after adsorption. The investigation of re-adsorption show that the material retains its adsorption capacity after many uses.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73361831","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}
Han Vo Thi, Duyen Le Thi, Thao Nguyen Thi Thanh, Hai Do Thi, Ha Nguyen Manh, Hong Vu Thi Minh, Bac Bui Hoang
Sericite sample from Son Binh, Huong Son, Ha Tinh was used to remove Pb2+ ion from aqueous solution. The effects of factors including pH, contact time, mass of serisite and Pb2+ initial concentration on the adsorption Pb2+ efficiency and capacity were investigated. The results showed that the adsorption capacity and removal efficiency of Pb2+ reached 2,54 mg/g and 89 % at the suitable conditions: 0.7g sericite, Pb2+ intinal concentration of 40 mg/L and contact time 60 minutes at room temperature (25°C) and pH0 5,3. The adsorption process follows the Langmuir adsorption isotherm model with the maximum monolayer adsorption capacity of 5.52 mg/g and follows the pseudosecond-order kinetic equation.
{"title":"Removal of Pb2+ from aqueous solution using sericite from Son Binh, Ha Tinh","authors":"Han Vo Thi, Duyen Le Thi, Thao Nguyen Thi Thanh, Hai Do Thi, Ha Nguyen Manh, Hong Vu Thi Minh, Bac Bui Hoang","doi":"10.51316/jca.2022.032","DOIUrl":"https://doi.org/10.51316/jca.2022.032","url":null,"abstract":"Sericite sample from Son Binh, Huong Son, Ha Tinh was used to remove Pb2+ ion from aqueous solution. The effects of factors including pH, contact time, mass of serisite and Pb2+ initial concentration on the adsorption Pb2+ efficiency and capacity were investigated. The results showed that the adsorption capacity and removal efficiency of Pb2+ reached 2,54 mg/g and 89 % at the suitable conditions: 0.7g sericite, Pb2+ intinal concentration of 40 mg/L and contact time 60 minutes at room temperature (25°C) and pH0 5,3. The adsorption process follows the Langmuir adsorption isotherm model with the maximum monolayer adsorption capacity of 5.52 mg/g and follows the pseudosecond-order kinetic equation.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88983918","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}
In this study, the effect of hydrothermal temperature of glass cullet (GC) and Ca(OH)2 was study. The batch-mixed sample with the Ca/Si 1.0 were hydrothermal reacted at different temperature such as 100, 150 and 180oC for 48 hour to find the suitable temperture to form the xonotlite. The data indicate that at 180oC for 48 hour, the peak of xonotlite at 2theta of 30 degree is highest, thus suggest for further study on the effect of hydrothermal reaction time to form the xonotlite.
{"title":"The effect of hydrothermal treatment time on the synthesized of Xonotlite using glass cullet (GC) and Calcium hydroxide","authors":"Kien Pham Trung, Quan Tran Ngo, Minh Do Quang","doi":"10.51316/jca.2022.030","DOIUrl":"https://doi.org/10.51316/jca.2022.030","url":null,"abstract":"In this study, the effect of hydrothermal temperature of glass cullet (GC) and Ca(OH)2 was study. The batch-mixed sample with the Ca/Si 1.0 were hydrothermal reacted at different temperature such as 100, 150 and 180oC for 48 hour to find the suitable temperture to form the xonotlite. The data indicate that at 180oC for 48 hour, the peak of xonotlite at 2theta of 30 degree is highest, thus suggest for further study on the effect of hydrothermal reaction time to form the xonotlite.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83067160","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}
In this study, the g-C3N4/CoFe2O4/Reduced graphene oxide composites were successfully synthesized by the co-precipitation method combined with mixed phase mixture. The obtained results from characterization methods such as XRD, SEM, FT-IR, EDX,… showed that the composite has a high structure and crystallinity, and spinel ferrite particles were dispersed fairly evenly onto reduced graphene oxide sheets as well as layers of g-C3N4. The existence of Co/Fe-O and Co-O-C bonds in materials was determined. The photocatalytic activity of g-C3N4/CoFe2O4/Reduced graphene oxide (GCN/CF-rGO) was estimated through the degradation of Tetracycline (TC) in aqueous solution. TC decomposition efficiency is up to 95% after 240 minutes of reaction and is higher than that of each component material. GCN/CF-rGO is a potential catalyst for effective application in TC decomposition reaction under visible light and has the ability to implement treatment in practice.
{"title":"Study on the synthesis of g-C3N4/CoFe2O4/Reduced graphene oxide material and its application as photocatalyst","authors":"Tram Pham Thi Le, Ha Nguyen Thi, Hoang Do Thi Phuong, Huy Nguyen Minh, Minh Nguyen Ngoc, Phuong Diep Thi Lan, Phuong Tran Thi Thu, Nghia Nguyen Thi, Thanh Huynh Thi Minh, Linh Bui Thi Ngoc, Thien Nguyen Duc, Hoan Nguyen Thi Vuong","doi":"10.51316/jca.2022.034","DOIUrl":"https://doi.org/10.51316/jca.2022.034","url":null,"abstract":"In this study, the g-C3N4/CoFe2O4/Reduced graphene oxide composites were successfully synthesized by the co-precipitation method combined with mixed phase mixture. The obtained results from characterization methods such as XRD, SEM, FT-IR, EDX,… showed that the composite has a high structure and crystallinity, and spinel ferrite particles were dispersed fairly evenly onto reduced graphene oxide sheets as well as layers of g-C3N4. The existence of Co/Fe-O and Co-O-C bonds in materials was determined. The photocatalytic activity of g-C3N4/CoFe2O4/Reduced graphene oxide (GCN/CF-rGO) was estimated through the degradation of Tetracycline (TC) in aqueous solution. TC decomposition efficiency is up to 95% after 240 minutes of reaction and is higher than that of each component material. GCN/CF-rGO is a potential catalyst for effective application in TC decomposition reaction under visible light and has the ability to implement treatment in practice.","PeriodicalId":23507,"journal":{"name":"Vietnam Journal of Catalysis and Adsorption","volume":"143 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89041021","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}
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