Bulletin of Chemical Reaction Engineering & Catalysis最新文献_第4页

Predicting Photocatalytic Properties of Metal Coupled Mn-TiO2 Particle Using Response Surface Methodology (RSM) as a Potential Filler in LED’s Encapsulant 用响应面法(RSM)预测金属偶联Mn-TiO2粒子作为LED封装剂潜在填料的光催化性能

Bulletin of Chemical Reaction Engineering & Catalysis Pub Date : 2023-05-30 DOI: 10.9767/bcrec.18020

A. J. Kadem, Yin Xin Teo, S. Pung, S. Sreekantan, S. Ramakrishnan

{"title":"Predicting Photocatalytic Properties of Metal Coupled Mn-TiO2 Particle Using Response Surface Methodology (RSM) as a Potential Filler in LED’s Encapsulant","authors":"A. J. Kadem, Yin Xin Teo, S. Pung, S. Sreekantan, S. Ramakrishnan","doi":"10.9767/bcrec.18020","DOIUrl":"https://doi.org/10.9767/bcrec.18020","url":null,"abstract":"This study addresses yellowing discoloration in LEDs caused by TiO2 particle degradation in encapsulants. The commonly added TiO2 particles will enhance light reflectance, and accelerate photodegradation but will decrease LED lifespan by lowering lumen quality and causing chromaticity change. To mitigate these effects, Mn particles were coupled with TiO2 particles using photo-reduction. This research examined three parameters Mn2+ ions concentration, UV irradiation duration, and annealing temperature, and the successful Mn-TiO2 coupling achieved. The resulting Mn-TiO2 particles, synthesized at 20 ppm Mn2+ ions and 200 °C annealing temperature, exhibited superior dispersibility and minimal agglomeration compared to TiO2 particles. Next, the photocatalytic performance of Mn-TiO2 particles was optimized using Response Surface Methodology (RSM). These particles exhibited the lowest photodegradation with a rate constant of 0.03092 min−1 and achieved a photodegradation efficiency of 79.92% at 60 min, amongst the others. Photodegradation of methylene blue followed a 1st-order kinetic model. Despite a slightly higher refractive index (RI), epoxy thin films with Mn-TiO2 particles displayed higher transmittance. Mn-TiO2 particles can thus serve as fillers in LED encapsulants to increase RI, reduce photodegradation, and enhance TiO2 particle dispersion. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). ","PeriodicalId":9366,"journal":{"name":"Bulletin of Chemical Reaction Engineering & Catalysis","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76292891","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

High Acidity and Low Carbon-Coke Formation Affinity of Co-Ni/ZSM-5 Catalyst for Renewable Liquid Fuels Production through Simultaneous Cracking-Deoxygenation of Palm Oil 棕榈油同时裂解-脱氧生产可再生液体燃料的Co-Ni/ZSM-5催化剂的高酸性和低碳结焦亲和性

Bulletin of Chemical Reaction Engineering & Catalysis Pub Date : 2023-05-18 DOI: 10.9767/bcrec.17974

I. Istadi, Teguh Riyanto, D. Anggoro, Cokorda Satrya Pramana, Amalia Rizqi Ramadhani

{"title":"High Acidity and Low Carbon-Coke Formation Affinity of Co-Ni/ZSM-5 Catalyst for Renewable Liquid Fuels Production through Simultaneous Cracking-Deoxygenation of Palm Oil","authors":"I. Istadi, Teguh Riyanto, D. Anggoro, Cokorda Satrya Pramana, Amalia Rizqi Ramadhani","doi":"10.9767/bcrec.17974","DOIUrl":"https://doi.org/10.9767/bcrec.17974","url":null,"abstract":"This study investigates the effect of chemically doped Co and Ni metals on ZSM-5 catalyst with respect to the catalysts’ characteristics and performance for palm oil cracking. Some characterization methods have been conducted to identify the physicochemical properties of the synthesized catalysts, including X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), N2-physisorption, NH3- and CO2-probed Temperature Programmed Desorption (NH3-TPD and CO2-TPD) methods. The deposited carbon-coke on the spent catalysts is analysed using simultaneous thermal gravimetric – differential scanning calorimetry (TG-DTG-DSC) analysis. The performance of catalysts was evaluated on palm oil cracking process in a continuous fixed-bed catalytic reactor at 450 °C. To determine the liquid product composition functional group and components, we used Attenuated Total Reflectance Fourier-transform Infrared Spectroscopy (ATR-FTIR) and batch distillation methods, respectively. We found that the Co metal chemically-doped on Ni/SM-5 catalyst, resulting the increase in the catalysts acidity and the decrease in catalysts basicity. The conversion of palm oil increases as the increase of the ratio of catalysts’ acidity to basicity. The highest triglyceride conversion (76.5%) was obtained on the 3Co-Ni/ZSM-5 with the yield of gasoline, kerosene, and diesel of 2.61%, 4.38%, and 61.75%, respectively. It was also found that the chemically doping Co metal on Ni/ZSM-5 catalyst decreased carbon-coke formation due to the low catalysts’ basicity. Overall, it is proven that the combination of Co and Ni, which chemically doped, on ZSM-5 catalyst has a good activity in palm oil conversion with low carbon-coke formation affinity and high acidity of catalyst.","PeriodicalId":9366,"journal":{"name":"Bulletin of Chemical Reaction Engineering & Catalysis","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72808964","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

Polyoxometalate Intercalated M2+/Al (M2+=Ni, Mg) Layered Double Hydroxide for Degradation of Methylene Blue 多金属氧酸嵌入M2+/Al (M2+=Ni, Mg)层状双氢氧化物降解亚甲基蓝

Bulletin of Chemical Reaction Engineering & Catalysis Pub Date : 2023-05-15 DOI: 10.9767/bcrec.17789

Yuliza Hanifah, R. Mohadi, M. Mardiyanto, N. Ahmad, S. Suheryanto, A. Lesbani

{"title":"Polyoxometalate Intercalated M2+/Al (M2+=Ni, Mg) Layered Double Hydroxide for Degradation of Methylene Blue","authors":"Yuliza Hanifah, R. Mohadi, M. Mardiyanto, N. Ahmad, S. Suheryanto, A. Lesbani","doi":"10.9767/bcrec.17789","DOIUrl":"https://doi.org/10.9767/bcrec.17789","url":null,"abstract":"The synthesis and characterization of M2+/Al (M2+=Ni, Mg) layered double hydroxide (LDH) and intercalated polyoxometalate is presented. We have reported the growth of polyoxometalate on Ni/Mg layered double hydroxide for degradation methylene blue (MB). By considering variables such as pH of dye solution, dye concentration, and time as degradation variables, the efficiency of organic dye degradation and degradation parameters of M2+/Al (M2+ = Ni, Mg) LDH and both composite LDH-polyoxometalate has been identified. X-Ray Diffraction (XRD), Fourier Transform Infra Red (FTIR), Scanning Electron Microscope (SEM), and Ultra Violet Diffuse Reflectance Spectroscopy (UV-DRS) spectroscopy confirmed the layered double hydroxide structure. XRD and FTIR analysis confirmed the single-phase of the as-made and polyoxometalate intercalated LDH. SEM images show the formation of aggregates of small various sizes. The material’s photodegradation was assessed through methylene blue (MB) degradation process. The result showed that NiAl-Si has a good degradation capacity for MB as compared to NiAl-Pw, MgAl-Si, and MgAl-PW. The result shows that LDH composite presents stability and has good photocatalytic activities toward the reduction of methylene blue. The FTIR measurement confirming the LDH composite structure reveals the materials used in the fifth regeneration. The activity of MB photodegradation pristine were NiAl (45%), MgAl (43%), NiAl-Pw (78%), NiAl-Si (85%), MgAl-Pw (58%), and MgAl-Si (75%), respectively. The LDH-polyoxometalate composite material’s capacity to successfully photodegrade, as measured by the percentage of degradation, revealed an increase in photodegradation catalysis and the ability of the LDH to regenerate. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). ","PeriodicalId":9366,"journal":{"name":"Bulletin of Chemical Reaction Engineering & Catalysis","volume":"167 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87936990","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, Structural Characterization，DFT，Hirschfeld Surface and Catalytic Activity of a New Zn (II) Complex of 4-Acetylbenzoic Acid 新型4-乙酰苯甲酸锌(II)配合物的合成、结构表征、DFT、Hirschfeld表面及催化活性

Bulletin of Chemical Reaction Engineering & Catalysis Pub Date : 2023-05-08 DOI: 10.9767/bcrec.17747

Lihua Wang, Hao-Wen Tai

{"title":"Synthesis, Structural Characterization，DFT，Hirschfeld Surface and Catalytic Activity of a New Zn (II) Complex of 4-Acetylbenzoic Acid","authors":"Lihua Wang, Hao-Wen Tai","doi":"10.9767/bcrec.17747","DOIUrl":"https://doi.org/10.9767/bcrec.17747","url":null,"abstract":"A new Zn(II) complex of 4-acetylbenzoic acid, namely [ZnL2(H2O)2] (1) (HL = 4-acetylbenzoic acid) has been synthesized in water-ethanol (v:v = 1:2) solution using zinc acetate dihydrate, 4-acetylbenzoic acid, and NaOH as reactants. The structure of complex (1) has been characterized by IR and X-ray single-crystal diffraction. X-ray diffraction analysis of complex (1) reveals that the Zn(II) ion is six-coordinated in a distorted octahedral coordination geometry with four carboxylic O atoms from two different bidentate 4-acetylbenzoic acid ligands (O1, O2, O1a, O2a) and two O atoms from two coordinated water molecules (O4 and O4a). Complex (1) forms 1D chained structure by the intermolecular and intramolecular O-H···O hydrogen bonds, and further forms a three-dimensional network structure by the π-π interaction of benzene rings and intermolecular O-H···O hydrogen bonds. The singlet ground-state geometry of the complex (1) were optimized using the PBE0 functional. The intermolecular interactions of complex (1) were quantitatively analysed by 3D Hirschfeld surface analysis and associated 2D fingerprint plots. The catalytic activity of complex (1) has been tested for the oxidation of benzyl alcohol under O2 atmosphere. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). ","PeriodicalId":9366,"journal":{"name":"Bulletin of Chemical Reaction Engineering & Catalysis","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83802429","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

Studies of the Solvent-Free Knoevenagel Condensation over Commercial NiO compared with NiO Drived from Hydrotalcites 商用NiO与水滑石驱动NiO的无溶剂Knoevenagel缩合研究

Bulletin of Chemical Reaction Engineering & Catalysis Pub Date : 2023-05-04 DOI: 10.9767/bcrec.17598

N. Aider, B. Djebarri, F. Touahra, H. Layeb, D. Halliche

{"title":"Studies of the Solvent-Free Knoevenagel Condensation over Commercial NiO compared with NiO Drived from Hydrotalcites","authors":"N. Aider, B. Djebarri, F. Touahra, H. Layeb, D. Halliche","doi":"10.9767/bcrec.17598","DOIUrl":"https://doi.org/10.9767/bcrec.17598","url":null,"abstract":"In this study, we compared the effect of the commercial NiO, synthesis NiAl-HT and NiO-HT drived from hydrotalcite in Knoevenagel condensation reaction. The NiAl-HT sample was synthesized by the coprecipitation method with a molar ratio M2+/M3+ = 2 at constant basic pH. X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR) were utilized to identify crystalline phases present in NiAl-HT, NiO-HT and commercial NiO. The chemical composition of the obtained solids was determined by Atomic Absorption Spectroscopy (AAS). Other techniques, such as Thermogravimetric Thermal Analyzer (TGA), Scanning Electron Microscopy (SEM) and Brunauere Emmette Teller Method (BET) were also used. As well as the BET showed the increase of the specific surface for the solid NiO-HT. The performance of the catalysts were studied in Knoevenagel condensation of benzaldehyde with ethyl acetoacetate without solvent to synthesis of organic compounds such as intermediates of dihydropyridines derivatives. The influence of different parameters, such as catalyst amount, reaction temperature and reaction time were optimized for studied the activity, the selectivity and the stability of the solids. Catalytic activity was in its lowest in the presence of NiAl-HT (26% of benzaldehyde conversion) whereas the benzaldehyde conversion increased to 77% in case of NiO-HT which can be explained by the presence of the basic sites of the NiO-HT oxides, a high surface area and a small crystallite size. Therefore, the lower increase in benzaldehyde conversion was noticed using commercial NiO (84%), perhaps owing to its high purity. A reaction mechanism is proposed by using density functional method (DFT). Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0)","PeriodicalId":9366,"journal":{"name":"Bulletin of Chemical Reaction Engineering & Catalysis","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79527239","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

Bismuth Oxychloride as an Efficient Heterogeneous Catalyst for Aldol Condensation Reaction between Aldehydes and Ketones 氯氧铋作为醛酮缩合反应的高效非均相催化剂

Bulletin of Chemical Reaction Engineering & Catalysis Pub Date : 2023-04-26 DOI: 10.9767/bcrec.17658

N. Oanh, Nguyen Vinh Huu, L. Nong

{"title":"Bismuth Oxychloride as an Efficient Heterogeneous Catalyst for Aldol Condensation Reaction between Aldehydes and Ketones","authors":"N. Oanh, Nguyen Vinh Huu, L. Nong","doi":"10.9767/bcrec.17658","DOIUrl":"https://doi.org/10.9767/bcrec.17658","url":null,"abstract":"The aldol reaction is a cornerstone of modern synthetic organic chemistry in which the β-hydroxyketone was formed by the reaction of an enol or an enolate and a carbonyl compound. Benzalacetone is one of the fundamental building blocks of benzalacetone synthase structure that play an important role for construction of a variety of medicinally crucial phenylbutanoids, such as anti-inflammatory glucoside lindleyin in rhubarb and gingerol. The non-transition metal material attracted much attention from research groups on the world, such a potential catalyst as BiOCl for organic reaction due to its remarkably chemical and physical properties as relative stability, resistance of air and moisture, low toxicity. The BiOCl material was synthesized by the solvothermal method. The structure features of material were defined by modern analytic methods such as X-ray diffraction (XRD), Fourier Transform infrared spectroscopy (FT-IR), Scaning Electron Microscope (SEM), and Nitrogen Adsorption-Desorption Isotherms. The BiOCl material was successfully utilized as a catalyst for the aldol condensation reaction of benzaldehyde and acetone. The reaction was performed in the mild condition with the presence of 10 mol% catalyst and 2 equivalent of Cs2CO3 as base without by-product in very short reaction times and good yields. The benzalacetone product obtained around 85% yield at 120 °C for 24 h. The BiOCl material after reaction was recovered and reused many times without significant reducing of catalytic activity. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). ","PeriodicalId":9366,"journal":{"name":"Bulletin of Chemical Reaction Engineering & Catalysis","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88056457","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

Effect of Additional Polyethylene Glycol and Citric Acid on Characteristics of NiMo/g-Al2O3 Catalyst in Light Cycle Gas Oil Hydrodesulfurisation 添加聚乙二醇和柠檬酸对轻循环油气加氢脱硫催化剂NiMo/g-Al2O3性能的影响

Bulletin of Chemical Reaction Engineering & Catalysis Pub Date : 2023-04-17 DOI: 10.9767/bcrec.17036

D. Sukandar, Laila Badriyah, Wawan Rustyawan, A. Adawiah

{"title":"Effect of Additional Polyethylene Glycol and Citric Acid on Characteristics of NiMo/g-Al2O3 Catalyst in Light Cycle Gas Oil Hydrodesulfurisation","authors":"D. Sukandar, Laila Badriyah, Wawan Rustyawan, A. Adawiah","doi":"10.9767/bcrec.17036","DOIUrl":"https://doi.org/10.9767/bcrec.17036","url":null,"abstract":"Sulfur is an impurity in diesel that causes low product quality and environmental pollution. Therefore, a catalyst is needed in the profound hydrodesulfurization (HDS) reaction to produce diesel fuel with low sulfur content. The catalyst synthesized in this work was NiMo/g-Al2O3 with the addition of PEG (2%, 4%, 6%) (w/w) and CA (1%, 2%, and 4%) (w/w). The catalyst was synthesized using the dry impregnation method with a metal concentration of 3% NiO and 15% MoO3. The obtained catalysts were characterized using X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), and Surface Area Analyzer (SAA). This work acquired the best catalyst characteristics for the HDS process by adding 2% PEG and 1% CA with a concentration of 3.19% NiO and 13.98% MoO3. The surface area, pore volume, and diameter are 181.655 m2/g, 0.50 cm3/g, and 110.51 Å, respectively. The catalyst activity satisfies Euro V standards at 345 ℃ with a sulfur content of 9.55 ppm, and the sulfur conversion (HDS) is 98.75%. The density and cetane index of the obtained diesel fuel was 0.798 g/mL and 53.6, respectively. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). ","PeriodicalId":9366,"journal":{"name":"Bulletin of Chemical Reaction Engineering & Catalysis","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79210072","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

Investigate the Function and Structure of (Fe,Cr) La2Ti2O7 Photocatalyst Calcined under the Nitrogen Atmosphere 氮气氛下煅烧(Fe,Cr) La2Ti2O7光催化剂的结构与功能研究

Bulletin of Chemical Reaction Engineering & Catalysis Pub Date : 2023-04-12 DOI: 10.9767/bcrec.17634

Hussanai Luangthanarak, R. Supruangnet, W. Tanthanuch, Sukasem Watcharamaisakul

{"title":"Investigate the Function and Structure of (Fe,Cr) La2Ti2O7 Photocatalyst Calcined under the Nitrogen Atmosphere","authors":"Hussanai Luangthanarak, R. Supruangnet, W. Tanthanuch, Sukasem Watcharamaisakul","doi":"10.9767/bcrec.17634","DOIUrl":"https://doi.org/10.9767/bcrec.17634","url":null,"abstract":"Extensive research has been conducted on enhancing the photocatalytic activity of Lanthanum titanium oxide (La2Ti2O7) based photocatalysts. However, these photocatalysts were found to be inactive under visible light. To address this limitation, a modification was developed by co-doping Fe and Cr on La2Ti2O7 to enable visible light driven photocatalytic response. The calcination of (Fe,Cr) La2Ti2O7 was carried out under nitrogen atmosphere at various temperatures for 24 h. The results showed that the (Fe,Cr)-La2Ti2O7 calcined at 1250 °C for 24 h exhibited the highest methylene blue degradation under visible light. Synchrotron X-ray absorption spectroscopy indicated that Fe and Cr were substitutionally located adjacent to the Ti atom within the La2Ti2O7 structure. This metal substitutionally facilitated electron transfer and perturbed the p-d hybridization by modifying the local electronic structure of the surrounding oxygen atoms and transition metal ions, thereby reducing the band gap energy and enhancing the photocatalytic capability. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). ","PeriodicalId":9366,"journal":{"name":"Bulletin of Chemical Reaction Engineering & Catalysis","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81418330","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

Study on Method of Doping Au Nanoparticles on ZnO Stratified Microstructure to Enhance Photocatalytic Ability and Antibacterial Activity 在ZnO层状结构上掺杂金纳米粒子增强光催化能力和抗菌活性的方法研究

Bulletin of Chemical Reaction Engineering & Catalysis Pub Date : 2023-04-10 DOI: 10.9767/bcrec.17566

Anh-Tuan Vu, Thi Anh Tuyet Pham

{"title":"Study on Method of Doping Au Nanoparticles on ZnO Stratified Microstructure to Enhance Photocatalytic Ability and Antibacterial Activity","authors":"Anh-Tuan Vu, Thi Anh Tuyet Pham","doi":"10.9767/bcrec.17566","DOIUrl":"https://doi.org/10.9767/bcrec.17566","url":null,"abstract":"In this study, stratified microstructure gold/zinc oxide (Au/ZnO) composites were successfully prepared by the method of dispersing Au nanoparticles (Au NPs) on the surface of the hierarchical flower ZnO via HAuCl4 reduction in the presence of different reducing agents such as sodium citrate (SC), sodium borohydride (SB), sodium hydroxide and ethanol (SE), and Hg lamp 250W. Au-doped samples were named Au/ZnO-SC, Au/ZnO-SB, Au/ZnO-SE, and Au/ZnO-Hg lamp, respectively. Au/ZnO-SC and Au/ZnO-SB revealed the uniform distribution of Au nanoparticles on the ZnO substrate, meanwhile, Au nanoparticles were very densely distributed in Au/ZnO-SE and Au/ZnO-Hg lamp samples. The pure ZnO only showed an absorption peak in the ultraviolet (UV) region, Au/ZnO samples indicated additional absorption peaks in the visible light region (500-600 nm), which were characteristic of the surface plasmon resonance (SPR) effect of Au NPs in composites. Therefore, their bandgap energy was reduced compared to ZnO (3.202 eV), leading to increased photocatalytic efficiency under visible light irradiation. Among the doped samples, Au/ZnO-SC (with Au content as 5 wt%) had the largest surface area (26.23 m2/g) and the highest pore volume (0.263 cm3/g) and average pore width (33.2 nm). As a result, it showed the highest catalytic efficiency through complete degradation of tartrazine (TA) within 30 min with a reaction rate of 0.124 min−1 under Hg lamp 250 irradiation. In addition, both pure ZnO and Au/ZnO nanocomposites exhibited high antimicrobial activity in killing Escherichia coli (E. coli), and their enhancing effect of them was reliant on the weight ratio of Au on ZnO and the concentration of tested samples. These results indicated that Au/ZnO material has prominent potential for applications in water environment treatment. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). ","PeriodicalId":9366,"journal":{"name":"Bulletin of Chemical Reaction Engineering & Catalysis","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76809463","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 Bimetallic Metal-Organic Frameworks (MOFs) La-Y-PTC for Enhanced Dyes Photocatalytic Degradation 用于增强染料光催化降解的双金属金属有机骨架La-Y-PTC的合成

Bulletin of Chemical Reaction Engineering & Catalysis Pub Date : 2023-03-20 DOI: 10.9767/bcrec.16130

A. Adawiah, Muhammad Shofyan Gunawan, I. Aziz, Wulandari Oktavia

{"title":"Synthesis of Bimetallic Metal-Organic Frameworks (MOFs) La-Y-PTC for Enhanced Dyes Photocatalytic Degradation","authors":"A. Adawiah, Muhammad Shofyan Gunawan, I. Aziz, Wulandari Oktavia","doi":"10.9767/bcrec.16130","DOIUrl":"https://doi.org/10.9767/bcrec.16130","url":null,"abstract":"Metal-Organic Frameworks (MOFs) is widely utilized as photocatalysts in dye photocatalytic degradation. This study successfully synthesized bimetallic MOFs La-Y-PTC by the solvothermal method. The synthesized La-Y-PTC has a diffractogram pattern with a value of 2θ = 5.69°; 9.57°; 16.8°; 20.05°; 24.8°; 26.15°; 29.77° and 41.93° with a crystal size of 21.45 nm. The La-Y-PTC has symmetric and asymmetric (COO−) at 1591 and 1433 cm−1, La−O and Y−O groups at 596 and 659 cm−1 and a band gap energy of 2.16 eV. Scanning Electron Microscope analysis showed that the morphology of La-Y-PTC is spherical with a particle size of 354.307 nm. La-Y-PTC degrades methylene blue and methyl orange at pH 2 with a degradation efficiency of 69.57% and 93.63%, respectively, under 250 watts of mercury lamp irradiation for 180 min with hydroxyl radical species as a dominant species that play a role in methylene blue and methyl orange degradations. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).","PeriodicalId":9366,"journal":{"name":"Bulletin of Chemical Reaction Engineering & Catalysis","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74910442","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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Bulletin of Chemical Reaction Engineering &amp; Catalysis最新文献

Bulletin of Chemical Reaction Engineering & Catalysis最新文献