Arabian Journal for Science and Engineering最新文献

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Photovoltaic-Based Dual Output DC–DC Converter Using Gravitational Search Algorithm-Tuned PI and Sliding Mode Controllers 使用重力搜索算法调整 PI 和滑动模式控制器的光伏双输出 DC-DC 转换器
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-04-02 DOI: 10.1007/s13369-024-08962-2
M. P. E. Rajamani, Murugappan Murugappan, N. B. Prakash, Gomesh Nair, Mohamed Trabelsi
{"title":"Photovoltaic-Based Dual Output DC–DC Converter Using Gravitational Search Algorithm-Tuned PI and Sliding Mode Controllers","authors":"M. P. E. Rajamani,&nbsp;Murugappan Murugappan,&nbsp;N. B. Prakash,&nbsp;Gomesh Nair,&nbsp;Mohamed Trabelsi","doi":"10.1007/s13369-024-08962-2","DOIUrl":"10.1007/s13369-024-08962-2","url":null,"abstract":"<div><p>This paper proposes a dual-output DC–DC power conversion system based on Photovoltaic (PV) technology. PV panels are connected to a series compensated Buck-Boost Converter (SCBBC) to harvest solar energy, while a sliding mode controller (SMC) ensures maximum power point tracking (MPPT). During the intermediate phase, a synchronized Buck-Boost Converter (SBBC) topology is used to ensure effective charging and discharging of batteries. Additionally, a PI-SMC hybrid control strategy is applied at the back end to the Super Lift Luo Converter (SLLC) to maintain the load voltage at a desired value. A Gravitational Search Algorithm (GSA)-based PI controller controls the input current, while the output voltage is controlled by the outer loop (SMC). We use a single-loop SMC approach to validate the performance of the proposed dual-loop control scheme. According to the presented results, the dual-loop control scheme demonstrated higher dynamic performance in controlling input current and output voltage.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"49 12","pages":"16299 - 16317"},"PeriodicalIF":2.6,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140574814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Construction of Ag/Bi7O9I3 Catalyst for Photocatalytic Degradation of Rhodamine B 构建用于光催化降解罗丹明 B 的 Ag/Bi7O9I3 催化剂
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-04-02 DOI: 10.1007/s13369-024-08931-9
Pooja Dhiman, Jayati Sharma, Amit Kumar, Gaurav Sharma, Elmuez A. Dawi
{"title":"Construction of Ag/Bi7O9I3 Catalyst for Photocatalytic Degradation of Rhodamine B","authors":"Pooja Dhiman,&nbsp;Jayati Sharma,&nbsp;Amit Kumar,&nbsp;Gaurav Sharma,&nbsp;Elmuez A. Dawi","doi":"10.1007/s13369-024-08931-9","DOIUrl":"10.1007/s13369-024-08931-9","url":null,"abstract":"<div><p>In this work, we fabricated an Ag/Bi<sub>7</sub>O<sub>9</sub>I<sub>3</sub> composite and tested the composite for the photodegradation of Rhodamine B (RhB) dye under UV–vis light irradiation. XRD, FESEM, TEM, UV–visible absorbance, XPS studies, ESR, and electrochemical analysis were used to characterize the synthesized photocatalysts. The synthesized catalyst displayed a maximum degradation efficiency of 98.45% in the 150-min experiment, which is nearly 1.56 times higher than Bi<sub>7</sub>O<sub>9</sub>I<sub>3</sub>. The enhanced photocatalytic activity of Ag/Bi<sub>7</sub>O<sub>9</sub>I<sub>3</sub> is attributed to the acceleration of charge separation and transfer of charge carriers with the inclusion of Ag. The improvement in photocatalytic efficiency of Ag/Bi<sub>7</sub>O<sub>9</sub>I<sub>3</sub> can be attributed to Ag deposition, which acts as an electron sink to avoid recombination of photogenerated electrons and holes. Additionally, Ag nanoparticles may show plasmonic resonance producing more electron–hole pairs in Bi<sub>7</sub>O<sub>9</sub>I<sub>3</sub>. Furthermore, a variety of tests were carried out on Ag/Bi<sub>7</sub>O<sub>9</sub>I<sub>3</sub> in order to clarify how different factors affect the photodegradation efficiency. The medium with pH = 3, catalyst loading = 35 mg, and Rhodamine B concentration = 10 ppm resulted in highest activity. Using a radical scavenging experiment and ESR studies, the effective radicals in promoting dye degradation have been identified, and ·O<sub>2</sub><sup>−</sup> radicals turned out to be the main radicals in promoting photocatalysis. Additionally, the reusability and degradation mechanisms of the enhanced photodegradation on the specified photocatalyst were examined.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"49 6","pages":"8443 - 8457"},"PeriodicalIF":2.6,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140574819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-Speed Coding Unit Depth Identifications Using CU-VGG Deep Learning Architectures 使用 CU-VGG 深度学习架构进行高速编码单元深度识别
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-04-01 DOI: 10.1007/s13369-024-08928-4
Hari Pattimi, B. K. N. Srinivasarao
{"title":"High-Speed Coding Unit Depth Identifications Using CU-VGG Deep Learning Architectures","authors":"Hari Pattimi,&nbsp;B. K. N. Srinivasarao","doi":"10.1007/s13369-024-08928-4","DOIUrl":"10.1007/s13369-024-08928-4","url":null,"abstract":"<div><p>The quadtree partition process involves major complexity in high-efficiency video coding (HEVC/H.265). It divides the coding tree units (CTUs) recursively into coding units (CUs). Determining the coding unit partition depth based on rate-distortion optimisation is computationally difficult in HEVC. This article proposes a system based on a deep learning architecture for determining the coding unit partition depth with less time in HEVC intra-prediction. The proposed system minimises computing complexity by removing the rate-distortion optimisation. The proposed system comprises two main blocks: the pre-processing block and the deep learning block. During the pre-processing phase, the spatial resolution of the input data is drastically reduced, enabling the neural network model to quickly adapt to the input sample and extract more meaningful feature data. This paper proposes two distinct deep learning architectures, CU-VGG16 and CU-VGG19. Pre-processed coding units (16 <span>(times )</span> 16) are the input for the deep learning architecture, and the corresponding coding units’ depths (0, 1, 2, 3) are the output. To compare the accuracy of coding unit depth prediction in the two proposed models, we have created a database with varying resolutions. The performance of the proposed models was observed by replacing the CU partition block of traditional HEVC with the proposed systems and comparing the bit rate and encoding time with traditional HEVC. The results demonstrated that the proposed architecture with CU-VGG16 and CU-VGG19 designs speeds up coding unit partitioning by 87.15% and 87.70%, respectively, as compared to standard HEVC.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"49 12","pages":"16287 - 16298"},"PeriodicalIF":2.6,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140771053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Extensible Non-isolated Enhanced Gain DC–DC Converter Integrating Switched Capacitor Cell for FCEV 用于 FCEV 的集成开关电容电池的可扩展非隔离增强增益 DC-DC 转换器
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-04-01 DOI: 10.1007/s13369-024-08907-9
Sovit Kumar Pradhan, Sreejith Sekaran, Indrojeet Chakraborty
{"title":"An Extensible Non-isolated Enhanced Gain DC–DC Converter Integrating Switched Capacitor Cell for FCEV","authors":"Sovit Kumar Pradhan,&nbsp;Sreejith Sekaran,&nbsp;Indrojeet Chakraborty","doi":"10.1007/s13369-024-08907-9","DOIUrl":"10.1007/s13369-024-08907-9","url":null,"abstract":"<div><p>In this study, three different Switched-Capacitor Enhanced boost quasi Z source (SCEq-Zs) DC–DC converters are presented, out of which the converter having a switched capacitor network positioned in series with the enhanced boost q-Zs network (SCEq-Zs-3) provides the common ground path and less output capacitor stress. This converter has a high voltage conversion ratio with low voltage stress on active and passive devices like capacitors, diodes, and the power semiconductor switch in comparison to other converters. This unidirectional hybrid switched-capacitor with a quasi Z source combination provides continuous and ripple-free source current mostly suitable for fuel cell applications. This leads to reduced voltage fluctuations at the input, providing a steady source of power to the converter. The converter is comprehensively analyzed and the operating principle along with waveforms is presented in this paper. A systematic comparison with other DC–DC boost converters is brought to view. A scaled-down 200V/200W prototype for the suggested converter is developed to verify the results of the theoretical study. A maximum efficiency of 95.85 % is measured. To demonstrate the effectiveness of the suggested converter, detailed experimental findings are presented.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"49 12","pages":"16271 - 16285"},"PeriodicalIF":2.6,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142409234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development and Evaluation of Ultrasound-Assisted Solvent Extraction of Polycyclic Aromatic Hydrocarbons from Membrane-Packed Biota Samples Followed by GC–MS/MS Analysis 开发和评估超声辅助溶剂萃取膜包生物群样本中的多环芳香烃并进行 GC-MS/MS 分析的方法
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-03-30 DOI: 10.1007/s13369-024-08763-7
Adeola Akeem Akinpelu, Muhammad Sajid, Mazen Khaled Nazal
{"title":"Development and Evaluation of Ultrasound-Assisted Solvent Extraction of Polycyclic Aromatic Hydrocarbons from Membrane-Packed Biota Samples Followed by GC–MS/MS Analysis","authors":"Adeola Akeem Akinpelu,&nbsp;Muhammad Sajid,&nbsp;Mazen Khaled Nazal","doi":"10.1007/s13369-024-08763-7","DOIUrl":"10.1007/s13369-024-08763-7","url":null,"abstract":"<div><p>In this study, a new method was developed for extraction and determination of polycyclic aromatic hydrocarbons (PAHs) in biota samples. The biota samples were packed inside a porous membrane bag and subjected to ultrasonication-assisted solvent extraction. This method showed good applicability to both low and high sample weights. The effect of various parameters such as type and volume of extraction solvent, ultrasonication time, sample weight, and dimensions of extraction device on extraction performance was evaluated. The developed method showed a good linear range from 12.5 to 100 ng/g for all the selected analytes with correlation coefficients ranging from 0.9907 to 0.9999. The limits of detection ranged from 0.97 to 3.47 ng/g. The method’s precision was assessed based on relative standard deviations, which were below 13.5% indicating an acceptable precision. The developed procedure used for determination of PAHs in biota samples is characterized by many positive features. The packing of dried biota samples inside the membrane bag is advantageous because it eliminates several steps such as filtration or centrifugation and further extract purification. As the samples are protected inside the membrane bag, they can be easily separated from the solvent extract after the completion of the extraction process by simply removing the membrane bag. Moreover, the membrane may hinder the transportation of macromolecules to the extract, thus resulting in a relatively cleaner extract. Due to its simplicity and excellent figures of merit, this method presents a better potential for routine analysis of polycyclic aromatic hydrocarbons in biota samples.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"49 7","pages":"9569 - 9576"},"PeriodicalIF":2.6,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140364660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Injectable In Situ Forming Collagen/Alginate/CaSO4 Composite Hydrogel for Tissue Engineering Applications: Optimization, Characterization and In Vitro Assessments 用于组织工程应用的可注射原位成型胶原/海藻酸盐/CaSO4 复合水凝胶:优化、表征和体外评估
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-03-30 DOI: 10.1007/s13369-024-08922-w
Hamsa Ashraf, Samar A. Salim, Shahira H. EL-Moslamy, Samah A. Loutfy, Elbadawy A. Kamoun
{"title":"An Injectable In Situ Forming Collagen/Alginate/CaSO4 Composite Hydrogel for Tissue Engineering Applications: Optimization, Characterization and In Vitro Assessments","authors":"Hamsa Ashraf,&nbsp;Samar A. Salim,&nbsp;Shahira H. EL-Moslamy,&nbsp;Samah A. Loutfy,&nbsp;Elbadawy A. Kamoun","doi":"10.1007/s13369-024-08922-w","DOIUrl":"10.1007/s13369-024-08922-w","url":null,"abstract":"<div><p><i>In situ</i> injectable hydrogels are effectively employed to fill irregular cavitary bone defects with initiating bone growth in targeted areas. Herein, an injectable composited hydrogel composed of collagen and alginate cross-linked <i>in situ</i> using different concentrations of calcium sulfate (0.15, 0.3 and 0.6%, wt./v) was synthesized. Recently, CaSO<sub>4</sub> is frequently supported as a bone graft material for bone regeneration, owing to its biocompatibility and osteoconductive properties. Moreover, hydroxyapatite (Hap) after salinization-step by (3-Aminopropyl) triethoxysilane (APTES) was incorporated for further enhancing the osteoconductive property of injected hydrogels. All fabricated hydrogels were characterized by SEM, FTIR and XRD analyses. While physiochemical characteristics of hydrogels were assessed through swelling index, hydrolytic degradability and thermal stability measurements. <i>In vitro</i> bio-assessments, <i>e.g.,</i> antimicrobial activity, cytotoxicity and cell adhesion tests using osteoblast-like cells (<i>MG-63</i>) were investigated. Results showed that addition of Hap offered better control of gelation time and formed uniform hydrogels, additionally improved significantly thermal stability, which leads to hindering of swelling index, prolonging hydrolytic degradability rates and significantly enhanced the antimicrobial activity of hydrogel; compared to hydrogel free-Hap. Hap-loaded Col–Alg–CaSO<sub>4</sub> hydrogel with the highest concentration of CaSO<sub>4</sub> recorded an enrichment of cell viability among all hydrogel samples. Notably, <i>In vitro</i> cell adhesion test showed that <i>MG-63</i> cells adhered adequately with all hydrogels. The results support the approach of using an injectable Hap-loaded Col/Alg hydrogel cross-linked with CaSO<sub>4</sub> as an alter and novel technique to enhance bone tissue regeneration, host–implant integration, quick/simple technique and easier for clinical handling.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"49 7","pages":"9577 - 9591"},"PeriodicalIF":2.6,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140361660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
WEDM Characteristics of Stir-Cast Al-TiB2 Metal Matrix Composites 搅拌铸造 Al-TiB2 金属基复合材料的线切割加工特性
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-03-30 DOI: 10.1007/s13369-024-08885-y
Siraj Ali Khan, Suswagata Poria, Prasanta Sahoo
{"title":"WEDM Characteristics of Stir-Cast Al-TiB2 Metal Matrix Composites","authors":"Siraj Ali Khan,&nbsp;Suswagata Poria,&nbsp;Prasanta Sahoo","doi":"10.1007/s13369-024-08885-y","DOIUrl":"10.1007/s13369-024-08885-y","url":null,"abstract":"<div><p>This article presents an experimental investigation of the WEDM (Wire Electrical Discharge Machining) performance of Al-TiB<sub>2</sub> composites fabricated using ultrasonic vibration-assisted stir casting and containing four different weight percentages (1%, 2.5%, 4%, and 5.5%) of TiB<sub>2</sub> particles. Key machining parameters, namely pulse-on time, wire feed rate, and pulse-off time, are varied at three levels suitable for machining aluminium base material while minimizing wire breakage. Cutting speed, material removal rate, and kerf width are observed individually for each selected level of these process parameters. Surface features are assessed using SEM (Scanning Electron Microscope), EDAX (Energy Dispersive X-ray Spectroscopy), 3D optical surface profilometer, and optical microscopy. Notably, the roughness values are lower in the 4% and 5.5% TiB<sub>2</sub> composites compared to the base matrix. This reduction in roughness is due to the protective role of the particles, which shield the surface from melting during the WEDM process. Melting and re-welding phenomena were observed throughout the machining process. It is observed that higher pulse-on time generates harsh sparks, leading to rougher surfaces that include melted zones and pits. The WEDM operations performed on the 5.5 wt% reinforced composite surface result in a significant reduction in roughness, decreasing from around 5 µm to approximately 2.7 µm.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"49 11","pages":"15037 - 15057"},"PeriodicalIF":2.6,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140364771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diagnosing Faults in Suspension System Using Machine Learning and Feature Fusion Strategy 利用机器学习和特征融合策略诊断悬挂系统故障
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-03-30 DOI: 10.1007/s13369-024-08924-8
H. Leela Karthikeyan, Naveen Venkatesh Sridharan, P. Arun Balaji, Sugumaran Vaithiyanathan
{"title":"Diagnosing Faults in Suspension System Using Machine Learning and Feature Fusion Strategy","authors":"H. Leela Karthikeyan,&nbsp;Naveen Venkatesh Sridharan,&nbsp;P. Arun Balaji,&nbsp;Sugumaran Vaithiyanathan","doi":"10.1007/s13369-024-08924-8","DOIUrl":"10.1007/s13369-024-08924-8","url":null,"abstract":"<div><p>Comfort and safety in automobiles can be enhanced with predictive maintenance by means of early problem detection and isolation, collectively referred to as fault diagnosis. To maintain a lead position in automotive industry, fleet managers are turning to predictive analysis. In this study, an attempt was made involving feature fusion to determine most significant features required to determine the suspension faults using vibration signals and machine learning approach. Three different features extraction techniques such as statistical, histogram and autoregressive moving average model (ARMA) were extracted from the acquired vibration signals for different fault conditions at the three different loads by means of a specially fabricated experimental setup. Feature selection was done for individual features using J48 decision tree algorithm. The performance of tree-based classifiers was assessed on the chosen individual features. Additionally, each individual feature was paired with others in four distinct combinations: statistical-histogram, statistical-ARMA, ARMA-histogram and ARMA-histogram-statistical, across three different loads. These combined features were then input into tree-based algorithms to identify the optimal classification algorithm, regardless of the load conditions. The results obtained in this study indicate that the combination of the ARMA-histogram-statistical feature with a random forest classifier yields optimal classification accuracy, regardless of load conditions, with values of 98.125%, 99.375% and 96.250%, respectively, and an average computational time of 0.10 s.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"49 11","pages":"15059 - 15083"},"PeriodicalIF":2.6,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140363451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Production and Optimization of Hydroxy and Methyl Phenolic Compounds Through Microwave-Assisted Catalytic Hydrogenolysis from Lignin Valorization 通过微波辅助催化水解木质素中的羟基和甲基酚类化合物的生产与优化
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-03-29 DOI: 10.1007/s13369-024-08897-8
Muhammad Arif Darmawan, Muhammad Yusuf Arya Ramadhan, Hens Saputra, Sri Djangkung Sumbogo Murti, Herman Hidayat, Heri Heriyanto,  Muryanto, Nizar Amir, Tania Surya Utami, Misri Gozan
{"title":"Production and Optimization of Hydroxy and Methyl Phenolic Compounds Through Microwave-Assisted Catalytic Hydrogenolysis from Lignin Valorization","authors":"Muhammad Arif Darmawan,&nbsp;Muhammad Yusuf Arya Ramadhan,&nbsp;Hens Saputra,&nbsp;Sri Djangkung Sumbogo Murti,&nbsp;Herman Hidayat,&nbsp;Heri Heriyanto,&nbsp; Muryanto,&nbsp;Nizar Amir,&nbsp;Tania Surya Utami,&nbsp;Misri Gozan","doi":"10.1007/s13369-024-08897-8","DOIUrl":"10.1007/s13369-024-08897-8","url":null,"abstract":"<div><p>The phenol-based antioxidants as free radical scavengers are expected to continue increasing as additives in industries. As an antioxidant, lignin has low oxidative stability in pure solid form, so stabilization is needed to produce lignin-based antioxidants. This research focuses on the valorization of alkaline lignin by hydrogenolysis using a Pt/C catalyst and formic acid as a hydrogen donor. Three treatment variables, namely the amount of formic acid (FA), the amount of ethanol (EtOH), and radiation time (<i>T</i>), were observed for their contribution to the three responses, namely the total phenol content (TPC), the degree of depolymerization (DD), and the IC<sub>50</sub> value of DPPH as an antioxidants activity. This study found that the best results were obtained at operating conditions FA, EtOH, and T 5 mL, 100 mL, 3 min in sequence, producing TPC, DD, and IC<sub>50</sub> worth 4792,055 mg/ L, 23.650%, and 35.860 mg/L, respectively. The results were optimized using the response surface methodology with the Design Expert 11 program with the optimized result being FA, EtOH, and T 10 mL, 100 mL, 3 min consecutively and resulted in TPC, DD, and IC<sub>50</sub> of 4987.12 mg/L, 26.451%, and 33.865 mg/L, respectively. The results of this study indicate that OPFEB is a source of lignin that has the potential to produce phenolic compounds, which are sources of renewable fine chemicals based on biomass.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"49 6","pages":"8425 - 8441"},"PeriodicalIF":2.6,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Facile Synthesis of Benzene Tricarboxylate-Modified Cerium, Cobalt and Zinc Nanoparticles: Structural and Electrochemical Characterization 苯三羧酸盐修饰的铈、钴和锌纳米粒子的简便合成:结构和电化学特性分析
IF 2.6 4区 综合性期刊
Arabian Journal for Science and Engineering Pub Date : 2024-03-28 DOI: 10.1007/s13369-024-08902-0
Sabah Haider, Maria Zaib, Umar Farooq
{"title":"Facile Synthesis of Benzene Tricarboxylate-Modified Cerium, Cobalt and Zinc Nanoparticles: Structural and Electrochemical Characterization","authors":"Sabah Haider,&nbsp;Maria Zaib,&nbsp;Umar Farooq","doi":"10.1007/s13369-024-08902-0","DOIUrl":"10.1007/s13369-024-08902-0","url":null,"abstract":"<div><p>The research on metal oxide nanoparticles (MONs) has witnessed incredible growth in recent decades as they are promising electrode materials for multiple applications. This work presents the hydrothermal synthesis of morphologically different MONs based on zinc, cobalt and cerium metals and their modifications with benzene tricarboxylic acid (BTC) using layer-by-layer assembly method. The simple and modified nanoparticles were structurally characterized by FTIR, XRD, SEM–EDX and TGA. Modified carbon paste electrodes (1% w/w) were fabricated using each of the ZnO, ZnO–Cu–BTC, Co<sub>3</sub>O<sub>4</sub>, Co<sub>3</sub>O<sub>4</sub>–Cu–BTC, CeO<sub>2</sub> and CeO<sub>2</sub>–Cu–BTC materials separately with graphite powder in paraffin oil using 3 cc portable plastic syringe. The XRD results showed 35.5, 10.8, 14.1, 11.6, 10.2 and 8.6 nm average crystal size for ZnO, ZnO–Cu–BTC, Co<sub>3</sub>O<sub>4</sub>, Co<sub>3</sub>O<sub>4</sub>–Cu–BTC, CeO<sub>2</sub> and CeO<sub>2</sub>–Cu–BTC, respectively. The electrochemical characterizations of each electrode were performed by EIS as well as CV. The electrochemical surface area of electrodes fabricated from ZnO, ZnO–Cu–BTC, Co<sub>3</sub>O<sub>4</sub>, Co<sub>3</sub>O<sub>4</sub>–Cu–BTC, CeO<sub>2</sub> and CeO<sub>2</sub>–Cu–BTC materials was calculated to be 153.4<i>,</i> 610.4<i>,</i> 746.1<i>,</i> 951.5<i>,</i> 161.7<i>,</i> and 951.8 cm<sup>2</sup>, respectively. The results from EIS plots indicated that electrodes based on modified metal oxide nanoparticles experienced lesser charge transfer resistance as compared to that in simple metal oxide-based electrodes. All the results indicated that electrodes based on modified MONs provide better surface area, surface coverage, charge transfer coefficients and rate constants as compared to those for simple MON-based electrodes. It is concluded that modification of simple MONs with BTC provided smaller particles size, better structural morphology and redox reactions assistance, making them suitable for better electrochemical applications.</p></div>","PeriodicalId":54354,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"49 7","pages":"9535 - 9556"},"PeriodicalIF":2.6,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140311733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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