Tin Oxide Nanoparticles Research Articles

Green Synthesis of Tin Oxide Nanoparticles using Psidium guajava Leaves Extract and its Applications in Antibacterial and Antioxidant Activities

Green Synthesis of Tin Oxide Nanoparticles using Psidium guajava Leaves Extract and its Applications in Antibacterial and Antioxidant Activities

Evaluation of Physicochemical Properties of Cadmium Oxide (CdO)-Incorporated Indium–Tin Oxide (ITO) Nanoparticles for Photocatalysis

This study investigates the structural, optical, and photocatalytic properties of cadmium oxide (CdO) nanoparticles (NPs) and indium–tin oxide (ITO)-doped CdO NPs. The synthesis of CdO NPs and ITO NPs was accomplished through the co-precipitation method. Scanning electron microscopy (SEM) analysis indicates that pure CdO NPs exhibit agglomerated structures, whereas ITO doping introduces porosity and roughness, thereby improving particle dispersion and facilitating electron transport. Energy dispersive spectroscopy (EDS) corroborates the successful incorporation of tin (Sn) and indium (In) within indium–tin oxide (ITO)-doped cadmium oxide (CdO) nanoparticles (NPs) in addition to cadmium (Cd) and oxygen (O). X-ray diffraction (XRD) analysis demonstrates that an increase in ITO doping results in a reduction of the crystallite size, decreasing from 23.43 nm for pure CdO to 18.42 nm at a 10% doping concentration, which can be attributed to lattice distortion. Simultaneously, the band gap exhibits a narrowing from 2.92 eV to 2.52 eV, achieving an optimal value at 10% ITO doping before experiencing a slight increase at higher doping concentrations. This tuneable band gap improves light absorption, which is crucial for photocatalysis. The photocatalytic degradation of rhodamine B (RhB) highlights the superior efficiency of ITO-doped CdO nanoparticles, achieving a remarkable 94.68% degradation under sunlight within 120 min, up 81.01%, significantly surpassing the performance of pure CdO. The optimal RhB concentration for achieving maximum degradation was determined to be 5 mg/L. This enhanced catalytic activity demonstrates the effectiveness of ITO-doped CdO NPs under both UV and visible light, showcasing their potential for efficient pollutant degradation in sunlight-driven applications.

Synthesis, characterization, and antibacterial activities of SnO and SnO@FeCl2 nanoparticles using Olea europaea subsp. Africana (Mill.) P.S. Green mediated green

ABSTRACT In the present study, tin oxide nanoparticles SnONPs and iron doped with tin oxide SnO@FeCl2-NPs were synthesized using extracts of Olea europaea subsp. Africana (Mill.) P.S. The bio-synthesized nanoparticles showed tremendous antibacterial and photocatalytic activities using the agar well diffusion method for antibacterial activity. Our results showed high activity of both NPs against the crystal violet dye and urinary tract caused by Bacteria. The NPs, in particular, SnO@FeCl2-NPs showed significant photocatalytic activity against crystal violet, which was very high as compared to SnONPs. In the case of SnO, the data showed that after the first 20 min of exposure, only 9.8% degradation was observed while after 160 min 79.9% degradation was observed. By using SnO@FeCl2–NP catalyst, the data shows that in initial 20 min the degradation recorded was 10% with the increase in exposure time, and the percentage of degradation reached 86.1%.

Plasmonic heating by indium tin oxide nanoparticles: spectrally enabling decoupled near-infrared theranostics.

All-optical theranostic systems are sought after in nanomedicine, since they combine in a single platform therapeutic and diagnostic capabilities. Commonly in these systems the therapeutic and diagnostic/imaging functions are accomplished with plasmonic photothermal agents and luminescent nanoparticles (NPs), respectively. For maximized performance and minimized side effects, these two modalities should be independently activated, i.e., in a decoupled way, using distinct near infrared (NIR) wavelengths: a radiation window wherein photon-tissue interaction is reduced. Yet, to date, a fully decoupled NIR theranostics system is not available. Finding plasmonic NPs working in that range and without spectral overlap with the absorption and emission of state-of-the-art NIR luminescent NPs requires the development of new materials specifically designed for this purpose. To address this limitation, we herein present water-dispersible indium tin oxide (ITO) NPs whose surface plasmon resonance was tuned for exclusive operation in the third biological window (NIR-III, 1500-1800 nm). That leaves available the first and second biological windows, in which diagnostic tools are typically working. Both the microwave-assisted synthesis and the water-transfer protocol were optimized to obtain NPs with maximum light-to-heat conversion capabilities, owing to their small size and reduced aggregation in aqueous media. Proof-of-concept experiments showed that the lack of overlap between the absorption of ITO NPs and the absorption/emission of model near infrared luminescent species (the widely used Nd3+-doped NPs) is an asset when devising an all-optical theranostics platform. The obtained results set the stage for the development of a new generation of high-performance, all-optical theranostic systems with minimized side effects.

Microemulsion synthesis of SnO2 nanoparticles and their integration in Au/n-Si/Al device structure

This study reports the synthesis of tin (IV) oxide (SnO2) nanoparticles (NPs) using the micro-emulsion method and its performance on n-type Si semiconductors under various operating conditions. The physical characteristics of SnO2 were examined using XRD, SEM, TEM, and UV–Vis analysis. XRD analysis revealed that SnO2 has a crystalline structure with an average crystallite size of 14.4 nm. The optical band gap energy of SnO2 was determined as 3.4 eV using UV–Vis analysis. Additionally, the current–voltage (I–V) characteristics of the Au/SnO2/n-Si/Al and Au/n-Si/Al devices were measured in darkness to explore the influence of SnO2 nanomaterial on their electrical parameters. From the I–V measurements, the rectification ratio, saturation current, ideality factor, and barrier height values for the SnO2/n-Si device were determined to be 4.35 × 104 (at ± 2 V), 1.96 × 10–9 A, 1.57, and 0.81 eV, respectively. For electro-optical characteristics of the SnO2/n-Si device, the I–V measurements were conducted under both visible light and UV light (365 nm) conditions. The SnO2/n-Si device, featuring a self-powered property, exhibited superior ON/OFF ratio, responsivity, and detectivity under UV light compared to white light illumination. Therefore, we can assert that the SnO2/n-Si device holds significant promise for sensitive light detection applications, particularly in UV-sensitive optoelectronic devices.

Synthesis of Tin Oxide Nanoparticles from E-Waste for Photocatalytic Mixed-Dye Degradation under Sunlight.

Electronic waste (e-waste) has become a significant environmental concern worldwide due to the rapid advancement of technology and short product lifecycles. Waste-printed electronic boards (WPCBs) contain valuable metals and semiconductors; among them, tin can be recycled and repurposed for sustainable material production. This study presents a potential ecofriendly methodology for the recovery of tin from WPCBs in the form of tin oxide nanostructured powders. The soldering points in the WPCBs are extracted and dissolved in the dilute HNO3 solution, followed by the formation of metastannic acid, which is subsequently transformed into SnO2 nanoparticles. Different characterization techniques (XRD, XPS, FE-SEM, and TEM) are employed to confirm the morphology and composition of nanoparticles. The prepared SnO2 NPs, having a size range of <50 nm, show excellent photocatalytic degradation of cationic (methylene blue, MB) and anionic (eosin Y, EY) dyes for wastewater treatment. The as-synthesized SnO2 can degrade the mixed dyes (MB+EY) under the illumination of natural sunlight at rate constants of 0.0153 and 0.1103 min-1 for MB and EY, respectively. The positive zeta potential and smaller particle size of the SnO2 NPs possess the extra advantage of the adsorption of anionic over cationic dye, resulting in faster degradation of EY, which is further supported by DFT calculation. The synthesis of SnO2 from waste-printed electronic boards offers a dual benefit: It not only provides a sustainable solution for managing electronic waste but also contributes to the production of useful photocatalysts for wastewater treatment. By converting waste into valuable resources, this approach aligns with the principles of the circular economy and mitigates the environmental impact associated with e-waste disposal.

Photocatalytic Estrogen Degradation by the Composite of Tin Oxide Fine Particles and Graphene-like Carbon Nitride.

This study investigates whether 17β-estradiol (E2), a natural estrogen and one of the endocrine-disrupting chemicals responsible for water pollution, can be oxidatively decomposed under simulated solar light using a composite of tin oxide nanoparticles and graphene-like carbon nitride (g-CN) as a photocatalyst. The composite photocatalyst was prepared by heating a mixture of urea and tin acetate. FT-IR measurements revealed that g-CN possesses structural units similar to g-C3N4, a well-studied graphite-like carbon nitride. However, unlike g-C3N4, sharp diffraction lines were not observed in the XRD diffraction pattern of g-CN, indicating lower crystallinity. Elemental analysis showed that g-CN is slightly nitrogen-rich compared to g-C3N4, and UV-vis measurements indicated that the band gap of g-CN is slightly smaller than that of g-C3N4. The presence of tin in the composite of tin oxide and g-CN was clearly confirmed by XPS, although no sharp diffraction peaks were observed in the XRD patterns, suggesting the presence of microcrystals. Furthermore, FE-SEM observations did not reveal large tin oxide crystals, although EDS mapping indicated the presence of tin oxide. It was found that the prepared tin oxide and g-CN composites function effectively as photocatalysts for degrading E2 under simulated solar light. The degradation rate constant was evaluated to be k = 3.34 (0.14) × 10-2 min-1. Peroxide ion radicals were detected in ESR measurements from the irradiated solution, suggesting that peroxide ion radicals are generated through oxygen photoreduction as the counter-reaction of the oxidative decomposition of E2.

Polymer stabilized cholesteric liquid crystals enhanced by functional nanofibers loaded with CuS NPs and ATO NPs for efficient smart windows and advanced infrared camouflage/anti-counterfeiting technologies

Polymer stabilized cholesteric liquid crystals enhanced by functional nanofibers loaded with CuS NPs and ATO NPs for efficient smart windows and advanced infrared camouflage/anti-counterfeiting technologies

Characterization of tin oxide nanoparticles synthesized by discharging the non-thermal plasma jet in liquid and their application as an antibacterial agent

Characterization of tin oxide nanoparticles synthesized by discharging the non-thermal plasma jet in liquid and their application as an antibacterial agent

Fabrication of Polymer Films with Tin Oxide Nanoparticles Synthesized in Plasma Discharge under the Effect of Ultrasound

Fabrication of Polymer Films with Tin Oxide Nanoparticles Synthesized in Plasma Discharge under the Effect of Ultrasound

Metal-free heteroatom integrated defect engineering of flexible carbon networks on tin oxide nanoparticles to enhance lithium-ion battery performance

Metal-free heteroatom integrated defect engineering of flexible carbon networks on tin oxide nanoparticles to enhance lithium-ion battery performance

Physical and Mechanical Properties of Polymer Films with Tin Oxide Nanoparticles Obtained in Plasma Discharge under the Effect of Ultrasound

Physical and Mechanical Properties of Polymer Films with Tin Oxide Nanoparticles Obtained in Plasma Discharge under the Effect of Ultrasound

Construction of ITO Nanoparticle Immobilized Substrates and Evaluation of Their Photocurrent Responses

Near-infrared (NIR) light can be used in a variety of fields, including energy conversion devices and medicines. However, there are only a limited number of compounds with NIR absorption, and research into their effective use remains unexplored. Previous research in our laboratory has reported the enhancement of visible light absorption in devices based on the combination of metal nanoparticles and functional molecules. In this study, we applied the system of the previous study to investigate the fabrication conditions of composite substrates of indium cubic tin oxide nanoparticles (ITO NPs), which have localized surface plasmon resonance (LSPR) absorption in the NIR region, and silicon naphthalocyanine derivative (SiNPc), which absorbs NIR light, and the photocurrent of the fabricated substrates.ITO NPs were synthesised by a solvothermal method using ethylene glycol. SiNPc was synthesised by mixing SiNPcCl2 with 1-octanol. The conductive substrates were sonically cleaned, ozonated and then surface treated by the immersion in a 3-Aminopropyltrimethoxysilane (3-APTMS) solution. ITO NPs immobilized substrates were constructed by spin-coating method. This substrate was immersed in a SiNPc solution to construct the conductive substrate/3-APTMS/ITO NPs/SiNPc composite substrate.The synthesized nanoparticles were confirmed to be cubic ITO NPs with high crystallinity and approximately 30 nm per side from XRD and TEM images. The UV-Vis-NIR spectrum of the fabricated substrates showed the absorption of the soret band of SiNPc at 340 nm and the LSPR absorption of ITO NPs in the NIR region, indicating that the conductive substrate/3-APTMS/ITO NPs/SiNPc composite substrate was fabricated. Photocurrent measurements were carried out using NIR light, and the cathode current was observed.

Operational energy savings in greenhouses by retrofitting covering plastics with photothermal antimony tin oxide nanocoating

Operational energy savings in greenhouses by retrofitting covering plastics with photothermal antimony tin oxide nanocoating

Thermoelectric power factor optimization in hydrothermally synthesized SnO2 nanoparticles by Cu doping

Thermoelectric power factor optimization in hydrothermally synthesized SnO2 nanoparticles by Cu doping

Tin oxide nanoparticles anchored on ordered mesoporous carbon for efficient acetone sensing

Tin oxide nanoparticles anchored on ordered mesoporous carbon for efficient acetone sensing

Biofabrication and Characterisation of Ni‐Doped SnO2 Nanoparticles With Enhanced Cytotoxicity, Antioxidant, Antimicrobial and Photocatalytic Activities

ABSTRACTThe present work focuses on Annona muricata leaf extract–mediated green synthesis of pure and nickel‐doped tin oxide nanoparticles for 3%, 5% and 7% concentrations. The properties of the obtained nanoparticles were investigated through XRD, FTIR, XPS, HRTEM–SAED, SEM–EDX and UV–visible spectroscopy techniques. The XRD pattern reveals all samples have tetragonal structures with high crystallinity. The Sn–O stretching vibration has been confirmed through FTIR spectra. The XPS results demonstrate that Sn0.93Ni0.07O2 nanoparticles have Sn3d, Ni2p and O1s oxidation states. EDX spectra contain Ni, Sn and O elements, which indicate the purity of the samples. UV–visible absorption spectrum shows decreases in optical energy bandgap with increases in nickel dopant concentration. The samples exhibit notable antibacterial activity against P. aeruginosa and S. aureus. Also, Sn0.93Ni0.07O2 nanoparticle has higher antifungal activity against A. niger than against C. albicans. Moreover, SnO2 nanoparticles have considerable antioxidant activity in DPPH scavenging compared to Sn0.93Ni0.07O2 nanoparticles. Furthermore, SnO2 nanoparticles have a better cytotoxic effect for L929 normal fibroblast cell lines with an LD50 value of 146.42 μg/mL. Additionally, the photocatalytic activity of SnO2 and Sn0.93Ni0.07O2 nanoparticles was done against methylene blue dye under direct sunlight irradiation. Overall, environmentally friendly synthetic pure and Ni‐doped SnO2 nanoparticles can be used in wastewater filter technologies as well as in medical aids due to their better cytotoxic, antioxidant and antimicrobial effects.

Optimal Dispersion of Antimony-Doped Tin Oxide (ATO NPs) in Different NMP Solvent Ratios for Maximizing Photovoltaic Efficiency of Carbon-Based Perovskite Solar Cells

Optimal Dispersion of Antimony-Doped Tin Oxide (ATO NPs) in Different NMP Solvent Ratios for Maximizing Photovoltaic Efficiency of Carbon-Based Perovskite Solar Cells

Study the Effects of Pure Tin Oxide Nanoparticles Doped with Cu, Prepared by the Biosynthesis Method, on Bacterial Activity

في هذه الدراسة ، تم تشويب جسيمات SnO2 النانوية بنسبة 2٪ بالوزن من النحاس بطريقة التخليق الحيوي. تم استخدام المواد الحيوية SnCl2.2H2O و CuCl2.2H2O و ESM كأغشية قشر البيض كمواد خام. تم تلدين العينات عند 550 درجة مئوية لمدة 3 ساعات. تم الحصول على الفعالية البكتيرية ضد سلالات المكورات العنقودية الذهبية سالبة الجرام و S. aureus إيجابية الجرام وتثبيط أعلى لتركيزات المكورات العنقودية الذهبية من E- coli. تم استخدام طريقة MIC لأدنى تركيز مثبط. أظهرت نتائج XRD أن العينات تبلورت ضمن النوع رباعي الزوايا الروتيل وأن متوسط حجم البلورة ل SnO2 النقي و SnO2: Cu كان (24.2 ، 16.6 )نانومتر على التوالي ، كذلك تم اجراء اختبارات SEM و AFM.كشفت دراسات UV-vis التحليل الطيفي للانعكاس عند فجوة الطاقة لـ SnO2 ، و SnO2: Cu 2٪ هو (4.30،4.35) الكترون فولت على التوالي ، وأظهرت نتائج AFM معدل الخشونة للعينات المحضرة حيث كان(6.34،9.13) نانومتر على التوالي. كما تم أجراء فحص ال EDX للعينات المعدة. الهدف من العمل هو إنشاء جزيئات نانوية SnO2 نقية من خلال التخليق الحيوي النشط ودراسة تأثير تعاطي المنشطات ب Cu ودراسة تاثيرها على خواصها التركيبية والبصرية وايضا في كيفية استخدامها كمضاد بكتيري.

Biodegradable photocatalytic film based on chia seed mucilage (xylose, glucose, and methyl glucuronic acid polysaccharides) containing barberry extract and SnO2 nanoparticles

Biodegradable photocatalytic film based on chia seed mucilage (xylose, glucose, and methyl glucuronic acid polysaccharides) containing barberry extract and SnO2 nanoparticles