Microscopy Research and Technique最新文献

{"title":"Enhanced Electrochemical Performance of Highly Porous CeO₂-Doped Zr Nanoparticles for Supercapacitor Applications.","authors":"M V Arularasu, T V Rajendran, Bassim Arkook, Moussab Harb, K Kaviyarasu","doi":"10.1002/jemt.24728","DOIUrl":"https://doi.org/10.1002/jemt.24728","url":null,"abstract":"<p><p>The aim of this work was to develop an ultrasonic-assisted synthesis method for the fabrication of CeO₂-doped Zr nanoparticles that would improve the performance of supercapacitor electrodes. This method, which eliminates the need for high-temperature calcination, involves embedding CeO₂ into Zr nanoparticles through 1 hr (CeO₂-Zr-1) and 2 hrs (CeO₂-Zr-2) of ultrasonic irradiation, resulting in the formation of nanostructures with significant improvements in their electrochemical properties. Through physicochemical analysis, we observed that the CeO₂-doped Zr nanoparticles, particularly those treated for 2 hrs (CeO₂-Zr-2), exhibit superior crystalline phase purity, optimal chemical surface composition, minimal agglomeration with particle sizes below 50 nm, and an impressive average surface area of 178 m²/g. Compared to the 1 hr irradiation samples (CeO₂-Zr-1) and undoped CeO₂ nanoparticles, the (CeO₂-Zr-2) electrodes demonstrated a remarkable capacitance of 198 Fg^-1 at a current density of 1 A/g while maintaining ~94.9% of their capacity after 3750 cycles. This indicates not only good reversibility but also exceptional stability. In (CeO₂-Zr-2) samples, the nanospherical structure achieved through ultrasonic synthesis is responsible for the enhanced capacitive behavior and stability, along with the synergistic effects caused by Zr doping, which improves the CeO₂ nanoparticle conductivity to a significant extent. Surface areas of the electrodes are larger due to the combination of these two materials, which contribute to their superior performance.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142604759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Anatomical, Histochemical, and Phytochemical Characterization of Species of the Genus Cucumis L.","authors":"Elizandra Maria da Silva, Cledson Dos Santos Magalhães, Karina Perrelli Randau","doi":"10.1002/jemt.24731","DOIUrl":"https://doi.org/10.1002/jemt.24731","url":null,"abstract":"<p><p>Cucumis anguria L. and Cucumis dipsaceus Ehrenb. ex Spach belong to the Cucurbitaceae family and are popularly known as \"maxixe.\" In folk medicine, they are used to treat pneumonia, hyperglycemia, wounds, and malaria. This study aims to characterize the anatomy, histochemistry, and phytochemistry of C. anguria and C. dipsaceus. Conventional methods in plant anatomy and microscopy were used to prepare and analyze semi-permanent slides containing cross-sections of the stem, petiole, leaves, and paradermal sections of the leaf blade. For the histochemical analysis, different reagents were used according to the target metabolite. Phytochemical tests of methanolic extracts of leaves were performed by thin-layer chromatography. The microscopic analysis allowed obtaining the differentiation of plant cells, the presence of tector and glandular trichomes, in addition to showing anatomical traits such as stem shape, petiole shape, and organization of the mesophyll. Histochemistry showed the presence of alkaloids, starch, phenolic compounds, lipophilic compounds, lignin, and tannins. Phytochemical prospection identified monoterpenes, sesquiterpenes, triterpenes, steroids, alkaloids, and reducing sugars. The obtained results provide important information for quality control and species differentiation since there are few studies in the literature on these species.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142604826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Taxonomic Identification of Ligustrum foliosum Nakai: A Comprehensive Study of Macro- and Micromorphology","authors":"Wajid Zaman,&nbsp;Eun Mi Lee,&nbsp;SeonJoo Park","doi":"10.1002/jemt.24723","DOIUrl":"10.1002/jemt.24723","url":null,"abstract":"<div>\u0000 \u0000 <p>\u0000 <i>Ligustrum foliosum</i> Nakai, a species endemic to South Korea, is a member of the Oleaceae family. This study provides a comprehensive taxonomic identification of <i>L. foliosum</i> based on its macro- and micromorphological characteristics, particularly focusing on the leaf foliar epidermal taxonomy. Scanning electron microscopy (SEM) was used to analyze the leaf structures of <i>L. foliosum</i> collected from various populations on Ulleungdo Island, its primary habitat. Macromorphological assessment revealed that <i>L. foliosum</i> exhibits ovate to elliptical leaves with pointed apices, rounded bases, and entire, smooth margins. The leaves measured 3–10 cm in length and 1.5–4 cm in width, with a pinnate venation pattern and prominent secondary veins. The adaxial surface was dark green and glabrous, while the adaxial surface was lighter green and slightly pubescent. Micromorphological analysis using SEM provided detailed insights into the leaf epidermal characteristics. The epidermal cells were polygonal in shape with straight to slightly curved anticlinal walls. Anomocytic stomata that were not surrounded by specialized cells are the predominant type, with a density ranging from 100 to 150/mm². Epidermal cells measured approximately 10–20 μm in length and 5–10 μm in width, while the stomata typically measured approximately 20–30 μm in length and 10–15 μm in width. Thick-walled bundle sheath cells were evident around the vascular bundles, with a density of 1–3 bundles/mm. The cuticle was moderately thick, providing protection against desiccation, and trichomes were elongated single cell on the leaf both surface. This study contributes to the understanding of <i>L. foliosum</i>'s taxonomic position within the Oleaceae family by providing a detailed description of its macro- and micromorphological characteristics. These findings can aid in the identification and conservation of this endemic species, which is crucial for preserving the unique biodiversity of Ulleungdo Island and South Korea.</p>\u0000 </div>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":"88 2","pages":"611-617"},"PeriodicalIF":2.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142604798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physio-Mechanic and Microscopic Analyses of Bioactive Glass-Based Resin Infiltrants","authors":"Syed Zubairuddin Ahmed,&nbsp;Abdul Samad Khan,&nbsp;Wejdan Waleed Nasser,&nbsp;Methayel Abdulrahman Alrushaid,&nbsp;Zahrah Mohammed Alfaraj,&nbsp;Moayad Mohammed Aljeshi,&nbsp;Asma Tufail Shah,&nbsp;Budi Aslinie Md Sabri,&nbsp;Sultan Akhtar,&nbsp;Mohamed Ibrahim Abu Hassan","doi":"10.1002/jemt.24725","DOIUrl":"10.1002/jemt.24725","url":null,"abstract":"<div>\u0000 \u0000 <p>This study aimed to investigate the efficacy and durability of bioactive glass-based dental resin infiltrants. Resin infiltrants were formulated by combining photoinitiated dimethacrylate monomers with three variations of bioactive glass: 45S5 Bioglass (RIS), boron-substituted (RIB), fluoride-substituted (RIF), and pure resins (PR), whereby TOOTH group (TH) and ICON (CN) served as commercial control groups. Teeth samples were prepared, and experimental and control infiltrants were applied on demineralized human-extracted teeth. All the samples were subjected to immersion in artificial saliva and pH cycling for 30 days. The samples from another group underwent tooth brushing simulation for 9600 cycles. Following artificial saliva immersion, the samples' hardness values showed that RIB had the highest values (318.44 ± 3.83) while PR (212.52 ± 9.02) had the lowest values. After immersing into the pH cycling solution, the RIF showed the highest hardness (286.86 ± 5.11), while the lowest values for the CN (143.76 ± 3.50). After the tooth brushing simulation, the teeth samples with RIB showed maximum microhardness values (312.06 ± 16.30) and the weakest for the TH (189.60 ± 6.43). The commercial and experimental enamel resin infiltrants showed almost similar results overall, with RIB demonstrating better microhardness and comparable surface roughness. In contrast, RIF proved more resistant to pH cycling, exhibited higher microhardness, and performed better in surface roughness analysis. These findings suggest that resin infiltrant materials, especially RIF, have promising potential for effectively and esthetically managing white spot lesions.</p>\u0000 </div>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":"88 2","pages":"595-610"},"PeriodicalIF":2.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142583203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pollen and Leaf Micromorphological Characteristics of Spiny Almonds (Prunus subgenus Amygdalus) in Iran","authors":"Nastaran Bayat,&nbsp;Farideh Attar,&nbsp;Arash Sotoodeh","doi":"10.1002/jemt.24717","DOIUrl":"10.1002/jemt.24717","url":null,"abstract":"<div>\u0000 \u0000 <p>This study investigates the micromorphological characteristics of pollen grains and leaf epidermal cells from 20 accessions across four species of spiny almonds using scanning electron microscopy. Thirteen quantitative traits of pollen grains, including exine sculpturing, were analyzed alongside qualitative features such as shape, exine sculpture type, and aperture type. Additionally, four quantitative and five qualitative features of the leaf epidermis were examined, focusing on cuticular ornamentation patterns, types of epicuticular wax, and stomatal measurements. The pollen grains were found to be isopolar monads, radially symmetric, medium-sized, varying from prolate spheroidal to prolate, and exhibiting 3-colporate to 3-colpate structures. The exine sculpturing was generally striate with short and long ridges, with or without perforations, and could be classified into three types. Notably, in the Isfahan population of <i>Prunus lycioides</i> and the North Khorasan population of <i>Prunus spinosissima</i>, the exine sculpture types were distinctly different, being rugulate and reticulate, respectively. Multivariate statistical analysis identified equatorial diameter, colpus length and width, and ridge width as key diagnostic markers for species identification within spiny almonds. Principal component analysis and hierarchical clustering further highlighted the significance of stomatal length, cuticular ornamentation patterns, and epicuticular wax types in differentiating among taxa. We conclude that groupings recognized in recent classifications of the subgenus <i>Amygdalus (spiny almonds)</i> remain challenging to delineate solely based on palynological data, as diverse pollen types are present across different clades and subclades. Furthermore, micromorphological leaf traits proved valuable in distinguishing certain spiny almond taxa, and the traits of epidermal cells may reflect the ecological adaptations of spiny almond species.</p>\u0000 </div>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":"88 2","pages":"575-594"},"PeriodicalIF":2.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142576585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"E. coli-Assisted Eco-Friendly Production of Biogenic Silver Cobalt Oxide (AgCoO2) Nanoparticles: Methanolysis-Based Hydrogen Production, Wastewater Remediation, and Pathogen Control","authors":"Aisha Irshad,&nbsp;Sajid Mahmood,&nbsp;Tanzeela Fazal,&nbsp;Shahid Iqbal,&nbsp;Mujaddad-ur- Rehman,&nbsp;Ammar Zidan,&nbsp;Mazloom Shah,&nbsp;Ali Bahadur,&nbsp;Azam Hayat,&nbsp;Asma Khan,&nbsp;Attiya Abdul Malik,&nbsp;Nasser S. Awwad,&nbsp;Hala A. Ibrahium","doi":"10.1002/jemt.24718","DOIUrl":"10.1002/jemt.24718","url":null,"abstract":"<div>\u0000 \u0000 <p>Herein, bacterial-assisted synthesis of AgCoO₂ is carried out. In the first step, <i>E. coli</i> was separated from soil samples via the “serial dilution method.” Ten milliliters of bacterial supernatant was mixed with cobalt chloride and silver nitrate hatched at 38°C for 24 h to get AgCoO₂ nanoparticles (NPs). XRD results confirm the synthesis of AgCoO₂ NPs while EDX results confirm the absence of any other elements than Ag, Co, and O. An average NP size of 12-26 nm was determined by TEM examination, and the surface of the particles was seen rough, irregularly shaped borders. The antibacterial activity of the constructed NPs was checked against <i>S. aureus, E. coli, Bacillus subtilus,</i> and <i>Pseudomanas areguinosa</i> using agar well diffusion method. The maximum zone of inhibition was 27 mm at 40 mg/mL against <i>Bacillus subtilus</i>. The performance of the synthesized NPs as photocatalysts was also assessed, and several operational parameters that control the photodegradation of the harmful dyes were tried to tune as well, and 85% degrading efficiency was obtained at 60^oC for 240 min for 30 mg of catalyst dose These NPs were also used to produce hydrogen by methanolysis.</p>\u0000 </div>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":"88 2","pages":"564-574"},"PeriodicalIF":2.0,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142567291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coinciding Diabetic Retinopathy and Diabetic Macular Edema Grading With Rat Swarm Optimization Algorithm for Enhanced Capsule Generation Adversarial Network","authors":"N. Ramshankar,&nbsp;S. Murugesan,&nbsp;Praveen K. V.,&nbsp;P. M. Joe Prathap","doi":"10.1002/jemt.24709","DOIUrl":"10.1002/jemt.24709","url":null,"abstract":"<div>\u0000 \u0000 <p>In the worldwide working-age population, visual disability and blindness are common conditions caused by diabetic retinopathy (DR) and diabetic macular edema (DME). Nowadays, due to diabetes, many people are affected by eye-related issues. Among these, DR and DME are the two foremost eye diseases, the severity of which may lead to some eye-related problems and blindness. Early detection of DR and DME is essential to preventing vision loss. Therefore, an enhanced capsule generation adversarial network (ECGAN) optimized with the rat swarm optimization (RSO) approach is proposed in this article to coincide with DR and DME grading (DR-DME-ECGAN-RSO-ISBI 2018 IDRiD). The input images are obtained from the ISBI 2018 unbalanced DR grading data set. Then, the input fundus images are preprocessed using the Savitzky–Golay (SG) filter filtering technique, which reduces noise from the input image. The preprocessed image is fed to the discrete shearlet transform (DST) for feature extraction. The extracting features of DR-DME are given to the ECGAN-RSO algorithm to categorize the grading of DR and DME disorders. The proposed approach is implemented in Python and achieves better accuracy by 7.94%, 36.66%, and 4.88% compared to the existing models, such as the combined DR with DME grading for the cross-disease attention network (DR-DME-CANet-ISBI 2018 IDRiD), category attention block for unbalanced grading of DR (DR-DME-HDLCNN-MGMO-ISBI 2018 IDRiD), combined DR-DME classification with a deep learning-convolutional neural network-based modified gray-wolf optimizer with variable weights (DR-DME-ANN-ISBI 2018 IDRiD).</p>\u0000 </div>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":"88 2","pages":"555-563"},"PeriodicalIF":2.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142564681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic Phytochemical and Nanotechnological Exploration of Melia azedarach With Silver Nitrate: Elucidating Multifaceted Antimicrobial, Antioxidant, Antidiabetic, and Insecticidal Potentials","authors":"Asad Husain Shah,&nbsp;Ameena Khan,&nbsp;Neelam Khan,&nbsp;Sammyia Jannat,&nbsp;Khaloud Mohammed Alarjan,&nbsp;Mohamed S. Elshikh,&nbsp;Afshan Afareen,&nbsp;Hajra Hameed","doi":"10.1002/jemt.24721","DOIUrl":"10.1002/jemt.24721","url":null,"abstract":"<div>\u0000 \u0000 <p>Plants are a rich source of bioactive compounds with significant pharmaceutical and health applications. This study explores the phytochemical, therapeutic, and phytotoxic properties of <i>Melia azedarach</i> by analyzing extracts from its bark, flowers, leaves, and fruits using six solvents: ethanol, methanol, acetone, hexane, chloroform, and distilled water. Twenty-one phytochemical tests were conducted, revealing significantly positive results for various tests. However, the ethanolic and methanolic flower extracts yielded no significant results in other tests. The highest total phenolic content was found in the chloroform extract of the leaves (96 ± 0.01 mg/100 g), and the highest antioxidant activity was observed in the ethanolic and hexane leaf extracts, with a 98% DPPH scavenging rate. Antibacterial testing showed significant efficacy against <i>Serratia marcescens</i>, <i>Bacillus subtilis</i>, <i>Kluyvera</i> spp., and <i>Pseudomonas</i> spp., with <i>p</i> values &lt; 0.0001. The fruit chloroform extract demonstrated the highest alpha-amylase inhibition (93 ± 0.05), while the ethanolic leaf extract had the greatest tumor inhibition (85.6 ± 0.5). Insecticidal assays revealed that the acetone bark extract had the highest control values (56% and 57%). Due to their higher reducing potential, the leaves were used to biosynthesize silver nanoparticles (AgNPs), characterized by UV–Vis spectroscopy, EDX, and SEM, revealing an average particle size of 20–30 nm and spherical morphology. The AgNPs exhibited excellent antibacterial, antioxidant, antidiabetic, and insecticidal activities. These findings highlight the potential of <i>M</i>. <i>azedarach</i> and its AgNPs for developing novel therapeutic agents.</p>\u0000 </div>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":"88 2","pages":"542-554"},"PeriodicalIF":2.0,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142546404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical Applications Reveal Enhanced Photocatalytic Performance of TiO2-Doped ZnS Nanocomposites","authors":"S. Synthiya,&nbsp;T. Thilagavathi,&nbsp;R. Uthrakumar,&nbsp;R. Renuka,&nbsp;C. Inmozhi,&nbsp;K. Kaviyarasu","doi":"10.1002/jemt.24722","DOIUrl":"10.1002/jemt.24722","url":null,"abstract":"<p>The titanium dioxide (TiO₂) nanoparticles were prepared by hydrothermal methods at ambient temperature. Based on XRD analysis, the average crystallite size of pure TiO₂ nanoparticles and those doped with ZnS was calculated to be 58 and 54 nm, respectively. At an angle of 25.4°, the prominent peak observed at the (101) plane of TiO₂ was confirmed. As can be seen from the collection of peaks, the TiO₂ formed has an anatase-type tetragonal crystal structure. A strain of −6.4541 × 10⁻⁴ and a grain size of 33 nm can be seen in the W–H plot for TiO₂ nanoparticles. For doped ZnS nanoparticles, on the other hand, the values are 1.9448 × 10⁻⁴ and 47 nm. In our study, we found that doped nanoparticles were average grain size 134 nm, while pure nanoparticles were average grain size 146 nm. Doping reduces the size of the nanomaterial, which means that the TiO₂ molecules form nanoclusters on their surfaces, which can lead to a larger grain size for a pure nanoparticle than for a doped nanoparticle. A wide range of functional groups and their associated bonds were investigated using FTIR spectra in synthesized nanomaterials. Ti<span></span>O<span></span>Ti bonds are subjected to a strong stretching vibration, which is confirmed by the absorption peaks from 450 cm⁻¹ to 800 cm⁻¹. The PL spectra for pure TiO₂- and ZnS-doped TiO₂ containing nanocomposites of ZnS emit ultraviolet light at wavelengths of 362 and 379 nm in the UV region. Pure and doped samples with optical bandgap energies of ~3.04 and ~3.8 eV corresponding to anatase phases were near ~3.18 eV in <i>Tauc plots</i>. Since the TiO₂-doped ZnS heterojunction migrates photoexcited holes toward the interface, while electrons migrate toward the bulk, this results in photoexcited holes migrating toward the interface. To calculate the specific capacitance of the synthesized materials, cyclic voltammetry with pure ZnS and those with ZnS-doped had specific capacitance values of 144.91 F/g and 120.11 F/g, respectively. The catalysts used were ZnS nanocomposite doped with TiO₂ in addition to pure TiO₂ nanoparticles. The degradation of dye within 80 min after sunlight exposure was monitored with a UV–Vis spectrophotometer at 20-min intervals. ZnS nanoparticles doped with TiO₂ display 87.8% greater efficiency than pure nanoparticles. Doped TiO₂ nanocomposite degrades at an 87.8% rate, whereas pure TiO₂ degrades at ~54%, indicating that the dopants enhance photocatalysis.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":"88 2","pages":"532-541"},"PeriodicalIF":2.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11739545/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142546403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of BaTiO3 nanoparticles as photocatalysts in the synthesis and characterization of novel fruit dyes is investigated","authors":"N. N. Shafeera,&nbsp;D. Saravanakkumar,&nbsp;K. Mohamed Rafi,&nbsp;A. Ayeshamariam,&nbsp;K. Kaviyarasu","doi":"10.1002/jemt.24678","DOIUrl":"10.1002/jemt.24678","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;p&gt;In the present work, the photocatalytic activity against the natural dye extracted from the novel fruits has been studied by the BaTiO&lt;sub&gt;3&lt;/sub&gt; nanoparticles (NPs) under a ultra-violet (UV) light source. The large concentrations of an essential phenolic agent present in this phytochemical extract superimposed with cloths fibers make strong stain and degrade into another form of toxic, which is excluded from the many textiles industries as the colorful waste waters without recycling and removal of that dye pigments have been investigated using both photodegradation and photoluminescence techniques. The entitled nanoparticles (NPs) were prepared using the soft chemical root-modified solvothermal synthesis combo method and exposure to heat treatment such that the annealing process has been done for different temperatures ranging from 100°C to 250°C. As for as concern the characterization, as a start, structural and morphology studies have been reported here that highly crystalline oriented peaks data using powder x-ray diffraction techniques (PXRD) as well as the surface morphology including the size, shape, and mass distribution using the field emission scanning electron microscopy (FESEM) techniques, which purely belong to rutile tetragonal structure of the crystal system and circular and noncircular flakes like rough surface morphology materials respectively. The lattice dissociation constant ‘&lt;i&gt;ε&lt;/i&gt;’ value of the BaTiO&lt;sub&gt;3&lt;/sub&gt; NPs has determined to be ~2.71 × 10&lt;sup&gt;−3&lt;/sup&gt; using the Williamson–Hall (W–H plot) analysis of crystallographic data. In the UV visible spectroscopy findings, since the extreme quantum confinement of BaTiO&lt;sub&gt;3&lt;/sub&gt; nanoflakes/nanodisc, the optical energy bandgap has been estimated to be a range of 1.98 to 2.67 eV (~2.48 eV) found from the &lt;i&gt;Tauc plot&lt;/i&gt; analysis, which contributes to the significantly owing to the enhanced photocatalytic efficiency with excellent performance along exciton formation, superoxide ions, and hydroxyl free radicals generations under UV–vis light irradiation resulting in efficient degradation of typical novel fruit organic dye. Photoluminescence spectra observed at room temperature and low temperature have been observed for the BaTiO&lt;sub&gt;3&lt;/sub&gt; nanoflakes, which exhibit the blue emission due to the crystalline defects such as the appearance of Ba vacancies leads to the conceivable beginning of &lt;i&gt;p&lt;/i&gt;-type conductivity and the origination of free exciton emission reveals the direct bandgap transition nature of nanoflakes.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Research Highlights&lt;/h3&gt;\u0000 \u0000 &lt;div&gt;\u0000 \u0000 &lt;ul&gt;\u0000 \u0000 &lt;li&gt;According to our findings, 89.71% of the natural syzygium cumin is degraded by photocatalysis reaction.&lt;/li&gt;\u0000 ","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":"88 2","pages":"523-531"},"PeriodicalIF":2.0,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11739539/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}