{"title":"Green synthesis and characterization of <i>Blumea sinuata</i> silver nanoparticles: antibacterial, antifungal, and antioxidant properties.","authors":"Umakant Pradhan, Jagdish Prasad Prajapati, Purusottam Majhi, Dibyasha Sahu, Rajesh Kumar Singh, Sadhucharan Mallick, Awadhesh Kumar Shukla","doi":"10.1039/d4na01063a","DOIUrl":"10.1039/d4na01063a","url":null,"abstract":"<p><p>The plant <i>Blumea sinuata</i> (Lour.) Merr. harbours high amounts of phytoconstituents, some of which have strong reduction and capping potential. Eco-friendly and nontoxic silver nanoparticles have been synthesized using the plant extract of <i>B. sinuata</i>. The formation of <i>B. sinuata</i> silver nanoparticles (BS-Ag<sub>2</sub>O NPs) was confirmed through various techniques. UV-visible spectroscopy revealed an absorbance band at 408 nm, Fourier transform infrared spectroscopy (FTIR spectroscopy) identified functional groups serving as stabilizing and capping agents, essential for the formation of silver nanoparticles, dynamic light scattering (DLS) measurement indicated that the nanoparticles had a mean hydrodynamic diameter of 102.50 nm, and the evaluated zeta potential for surface charge analysis of BS-Ag<sub>2</sub>O NPs was found to be -16.4 mV. High-resolution transmission electron microscopy (HRTEM) showed an average particle size of 7.98 nm, and X-ray diffraction (XRD) analysis confirmed the face-centred cubic (FCC) structure of Ag<sub>2</sub>O NPs. The antibacterial activity of BS-Ag<sub>2</sub>O NPs against phytopathogenic bacteria <i>Erwinia carotovora</i>, <i>Ralstonia solanacearum</i>, and <i>Xanthomonas oryzae</i> was assessed by the agar-well diffusion method. At 400 μg concentration of BS Ag<sub>2</sub>O NPs, the maximum zones of inhibition were 20.66 mm and 20.33 mm against <i>E. carotovora</i> and <i>R. solanacearum</i>, respectively. While a zone of inhibition of 14.33 mm was observed against <i>X. oryzae</i>. Biogenic BS-Ag<sub>2</sub>O NPs exhibited remarkable antifungal activity against phytopathogenic fungi, namely <i>Alternaria alternata</i>, <i>Aspergillus niger</i>, <i>Aspergillus flavus</i>, and <i>Fusarium oxysporum</i>. At a concentration of 1.5 mg mL<sup>-1</sup> BS-Ag<sub>2</sub>O NPs, the percentage of inhibition was 91.70, 62.65, 58.96, and 50.45 on the growth of <i>A. alternata</i>, <i>A. flavus</i>, <i>A. niger</i>, and <i>F. oxysporum</i>, respectively. The antioxidant activity of BS-Ag<sub>2</sub>O NPs was evaluated by 2,2-diphenyl-1-picrylhydrazyl hydrate (DPPH) as well as 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) methods. The reported DPPH free radical scavenging activity was 25.85 ± 0.36% at 80 μg mL<sup>-1</sup> concentration of BS-Ag<sub>2</sub>O NPs, and in the case of ABTS, it was found to be 40.28% at 80 μg mL<sup>-1</sup> concentration of BS-Ag<sub>2</sub>O NPs.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12067295/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144063896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Magnetically recoverable Fe<sub>3</sub>O<sub>4</sub>@chitosan@Ni<sub>2</sub>B: a bio-based catalyst for one-pot green and efficient synthesis of tetrahydrobenzo[<i>b</i>]pyrans.","authors":"Bashir Mashhourzad, Behzad Zeynizadeh","doi":"10.1039/d4na01020e","DOIUrl":"https://doi.org/10.1039/d4na01020e","url":null,"abstract":"<p><p>This study investigates the development of a novel and environmentally friendly catalyst, Fe<sub>3</sub>O<sub>4</sub>@chitosan@Ni<sub>2</sub>B nanocomposite, for multicomponent reactions (MCRs). Chitosan (CS), a biopolymer, is used because it is biocompatible, abundant, and has functional groups that can be complexed with metals. Nickel boride (Ni<sub>2</sub>B) is used in hydrogenation reactions due to its catalytic properties. The magnetic properties of Fe<sub>3</sub>O<sub>4</sub> nanoparticles enable easy separation. Herein, we describe the successful synthesis of the Fe<sub>3</sub>O<sub>4</sub>@CS@Ni<sub>2</sub>B nanocomposite and its use in MCRs for the green synthesis of tetrahydrobenzo[<i>b</i>]pyran derivatives. These heterocyclic compounds impress with their diverse biological activities. The research has several advantages, including the implementation of environmentally friendly catalyst protocols, the simplification and cost-effectiveness of the synthesis process, the use of an easily accessible biopolymer, the successful performance of efficient one-pot reactions without additional waste generation, and the easy recycling of the catalyst. This research demonstrates the potential of Fe<sub>3</sub>O<sub>4</sub>@CS@Ni<sub>2</sub>B as a promising catalyst for sustainable and selective MCRs.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12062835/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144001983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alen Sam Thomas, Philip Nathaniel Immanuel, Neena Prasad, Achiad Goldreich, Jonathan Prilusky, Raanan Carmieli, Lena Yadgarov
{"title":"Synthesis of CsPbBr<sub>3</sub> decorated ZIF-8 nanocomposite for enhanced photocatalytic performance.","authors":"Alen Sam Thomas, Philip Nathaniel Immanuel, Neena Prasad, Achiad Goldreich, Jonathan Prilusky, Raanan Carmieli, Lena Yadgarov","doi":"10.1039/d5na00217f","DOIUrl":"https://doi.org/10.1039/d5na00217f","url":null,"abstract":"<p><p>CsPbBr<sub>3</sub> (CPB) perovskite nanocrystals (NCs) have attracted considerable interest due to their outstanding charge carrier mobility, long diffusion lengths, and efficient visible light absorption, making them ideal candidates for photocatalysis, light-emitting diodes (LEDs), solar cells, and photodetectors. However, their practical applications are limited by poor environmental stability. To address this challenge, we employ a zeolitic imidazolate framework (ZIF), specifically ZIF-8, as a stabilizing matrix for its exceptional thermal and chemical stability, high surface area, and versatile synthesis routes. The CPB/ZIF-8 nanocomposite was synthesized by integrating hot-injection-produced CPB NCs with ZIF-8 using an optimized mixing approach, ensuring a uniform NCs distribution. Electron microscopy (EM) analysis confirmed the well-controlled and uniform distribution of the NCs on the surface of the ZIF-8. Moreover, the Fourier-transform infrared spectroscopy (FTIR) revealed ligand exchange, where the imidazole linkers of the ZIF-8 structure replace the NCs ligands. The process advances almost epitaxial attachment of the latter, thus promoting effective charge interactions in the integration process. Indeed, we observe that upon formation of the composite, there is a 92% quenching in the photoluminescence (PL) of the NCs. This finding further indicates efficient charge separation and reduced electron-hole recombination. To gain deeper insight into the charge transfer mechanisms, we conducted electron paramagnetic resonance (EPR) measurements to compare the radical generation capabilities of CPB and ZIF with those of the CPB/ZIF composite. The composite exhibited superior radical generation capabilities, particularly hydroxyl radicals (˙OH), indicating enhanced charge transfer. These findings suggest that the composite is a highly promising candidate for photocatalysis. Building on these findings, we explored the photocatalytic abilities of the composite through dye degradation experiments, using methyl orange (MO) and bromocresol green (BCG) as model dyes. The CPB/ZIF nanocomposite demonstrated significantly enhanced photocatalytic performance compared to pristine ZIF and CPB NCs. Specifically, its degradation rates were 1.48× and 1.75× higher for MO and BCG, respectively, than those of CPB NCs. This improvement highlights the effective interaction between CPB NCs and ZIF, establishing the CPB/ZIF nanocomposite as a promising material for photocatalysis and optoelectronic applications.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12076080/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144078661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Andrei Luferau, Alexej Pashkin, Stephan Winnerl, Maximilian Obst, Susanne C Kehr, Emmanouil Dimakis, Thales V A G de Oliveira, Lukas M Eng, Manfred Helm
{"title":"Time-resolved nanospectroscopy of III-V semiconductor nanowires.","authors":"Andrei Luferau, Alexej Pashkin, Stephan Winnerl, Maximilian Obst, Susanne C Kehr, Emmanouil Dimakis, Thales V A G de Oliveira, Lukas M Eng, Manfred Helm","doi":"10.1039/d5na00307e","DOIUrl":"https://doi.org/10.1039/d5na00307e","url":null,"abstract":"<p><p>We investigate ultrafast electron dynamics in individual GaAs/InGaAs core-shell nanowires using near-infrared pump-mid-infrared probe nanospectroscopy based on a scattering-type scanning near-field technique. Our results reveal a distinct blue shift in plasmon resonance frequency induced by photodoping. By extracting time-dependent electron densities and scattering rates, we gain insights into the effects of chemical doping and nanowire surface states on recombination dynamics and carrier mobility. Varying the pump power over two orders of magnitude reveals carrier recombination times in the range from a few ps at high power to 100 ps at low power, dominated by bimolecular recombination. Our findings highlight the potential of time-resolved nanoscopy for contactless probing of free carrier mobility and recombination dynamics on a local scale in individual semiconductor nanostructures or nanodevices.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12060794/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144033482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Muhammad Sarfraz, Gautam Behl, Sweta Rani, Niall O'Reilly, Peter McLoughlin, Orla O'Donovan, Alison L. Reynolds, John Lynch and Laurence Fitzhenry
{"title":"Correction: Development and in vitro and ex vivo characterization of a twin nanoparticulate system to enhance ocular absorption and prolong retention of dexamethasone in the eye: from lab to pilot scale optimization","authors":"Muhammad Sarfraz, Gautam Behl, Sweta Rani, Niall O'Reilly, Peter McLoughlin, Orla O'Donovan, Alison L. Reynolds, John Lynch and Laurence Fitzhenry","doi":"10.1039/D5NA90032H","DOIUrl":"https://doi.org/10.1039/D5NA90032H","url":null,"abstract":"<p >Correction for ‘Development and <em>in vitro</em> and <em>ex vivo</em> characterization of a twin nanoparticulate system to enhance ocular absorption and prolong retention of dexamethasone in the eye: from lab to pilot scale optimization’ by Muhammad Sarfraz <em>et al.</em>, <em>Nanoscale Adv.</em>, 2025, https://doi.org/10.1039/d4na01086h.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 10","pages":" 3143-3143"},"PeriodicalIF":4.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/na/d5na90032h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis, characterization, and evaluation of low molecular weight poly(β-amino ester) nanocarriers for enhanced T cell transfection and gene delivery in cancer immunotherapy.","authors":"Alireza Gharatape, Ali Sayadmanesh, Hamid Sadeghi-Abandansari, Hossein Ghanbari, Mohsen Basiri, Reza Faridi-Majidi","doi":"10.1039/d5na00169b","DOIUrl":"https://doi.org/10.1039/d5na00169b","url":null,"abstract":"<p><p>Cancer immunotherapy represents a revolutionary approach in cancer treatment by leveraging the body's immune system to target and eliminate cancer cells. An emerging strategy within this field is gene delivery, which can enhance the efficacy of immune cells. Nanocarrier-based gene delivery methods have gained prominence due to their ability to protect and transport genetic material into cells efficiently. Polymeric nanocarriers, in particular, offer significant advantages, such as customizable physical and chemical properties, biocompatibility, and the potential for targeted delivery. Among polymeric nanocarriers, poly(β-amino ester) (PBAE) polymers are notable for their biodegradability, low cytotoxicity, and high gene transfection efficiency. This study investigates the synthesis and characterization of low molecular weight PBAE nanocarriers, assessing their potential in gene delivery applications for Jurkat and primary T cells-both crucial in cancer immunotherapy. Our research involved synthesizing PBAE polymer and creating nanocarriers at various DNA-to-polymer ratios. We characterized these nanocarriers in terms of size, zeta potential, and encapsulation efficiency. Confocal microscopy and flow cytometry were utilized to evaluate cellular uptake and transfection efficiency. The results demonstrated appropriate transfection efficiency and significant gene expression in both hard-to-transfect cell types (jurkat up to 37% and primary T cell 5%), with optimized DNA-to-polymer ratios showing minimal cytotoxicity. This study highlights the potential of PBAE nanocarriers in enhancing gene delivery for cancer immunotherapy. By effectively transfecting T cells, these nanocarriers could improve the therapeutic outcomes of immunotherapy, offering a promising pathway for developing more effective cancer treatments.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12057721/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144018341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The electronic properties of functionalized MXene M<sub>2</sub>XT<sub>2</sub> (M = Ti, Zr, Sc; X = C; T = O, F) nanoribbon/striped borophene nanoribbon heterojunctions.","authors":"Mahdi Shirazinia, Edris Faizabadi","doi":"10.1039/d4na00629a","DOIUrl":"https://doi.org/10.1039/d4na00629a","url":null,"abstract":"<p><p>The van der Waals heterojunctions and heterostructures developed from diverse materials demonstrate unparalleled potential by combining the favorable properties of their structural layers. In this investigation, we initially showcase the findings and evaluations derived from Density Functional Theory (DFT) of selected functionalized MXene nanoribbons (Ti<sub>2</sub>CO<sub>2</sub>, Zr<sub>2</sub>CO<sub>2</sub>, and Sc<sub>2</sub>CF<sub>2</sub>), along with four types of striped borophene nanoribbons. Nanoribbons come in two forms (armchair and zigzag) and have a variety of widths. Except for 9-, 12-, and 15-MZNRs, there are no band gaps on MXene nanoribbons arranged in a zigzag pattern. Contrastingly, band gaps emerge in MXene nanoribbons with armchair-shaped edges. It is also discovered that every selected SBNR is metallic in nature. Lastly, we carried out a computational analysis of the electronic characteristics of the MNR/SBNR heterojunctions. The significant thermodynamic stability of MNR/SBNR heterojunctions is suggested by the small lattice mismatch in the periodic direction and the negative formation energies. Our research demonstrates that all heterojunction samples exhibit metallic behavior. Additionally, we observed significant changes in total magnetization when applying electric fields of different directions and amplitudes to the heterojunction samples. These findings present promising avenues for enhancing and controlling multiferroics or electrically controllable antiferromagnets, as well as advancing spintronic devices. Moreover, they hold potential for memory devices and sensors.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12047261/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144063965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhao Chen, Feifeng Huang, Biao Wang, Qiancheng Wang, Hongbin Chen, Qiu Shao, Bo Feng, Ming Ji, Huigao Duan
{"title":"Atomic layer deposition of Ru in nanoTSV with high coverage and low resistivity.","authors":"Zhao Chen, Feifeng Huang, Biao Wang, Qiancheng Wang, Hongbin Chen, Qiu Shao, Bo Feng, Ming Ji, Huigao Duan","doi":"10.1039/d5na00051c","DOIUrl":"https://doi.org/10.1039/d5na00051c","url":null,"abstract":"<p><p>With the advancement of Moore's Law, the metal linewidth has gradually reduced and Cu interconnection has lost its advantages. This paper explores the advantage of ruthenium (Ru) as a next-generation interconnection material. An Ru film with a resistivity of 15 μΩ cm and roughness of 0.8 nm was fabricated <i>via</i> atomic layer deposition (ALD) using the metal-organic precursor (bis(ethylcyclopentadienyl)ruthenium [Ru(EtCp)<sub>2</sub>]) and oxygen as the reactant. Excellent step coverage and filling in nanoTSV arrays with a critical dimension (CD) of 30 nm and an aspect ratio (AR) of approximately 15 demonstrate that the reported process is highly promising for fabricating Ru as a replacement for Cu interconnects in advanced integrated circuits (ICs).</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12076079/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144078226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Morphology and property tuning in ZnO-Ni hybrid metamaterials in vertically aligned nanocomposite (VAN) form.","authors":"Nirali A Bhatt, Lizabeth Quigley, Shiyu Zhou, Anirutha Gnanasabai, Abhijeet Choudhury, Yizhi Zhang, Jianan Shen, Juanjuan Lu, Aleem Siddiqui, Raktim Sarma, Haiyan Wang","doi":"10.1039/d5na00207a","DOIUrl":"https://doi.org/10.1039/d5na00207a","url":null,"abstract":"<p><p>ZnO thin films have attracted significant interest in the past decades owing to their unique wide band gap properties, piezoelectric properties, non-linearity and plasmonic properties. Recent efforts have been made in coupling ZnO with secondary phases to enhance its functionalities, such as Au-ZnO nanocomposite thin films with tunable optical and plasmonic properties. In this work, magnetic nanostructures of Ni are incorporated in ZnO thin films in a vertically aligned nanocomposite (VAN) form to couple magnetic and plasmonic response in a complex hybrid metamaterial system. Nickel (Ni) is of interest due to its ferromagnetic and plasmonic properties along with gold (Au) which is also plasmonic. Therefore, two approaches, namely, tuning of the deposition pressure and use of a ZnO-Au seeding layer have been attempted to achieve unique Ni nanostructures in addition to tuning of the microstructure. Together, both approaches demonstrate a range of microstructures such as core-shell, nanodisk, nanocup, and nanocube-like morphologies not previously attempted. Additionally, there is effective tuning of properties. Specifically, the seeding layer thickness causes hyperbolic behavior as well as redshift in the surface plasmon resonance (SPR) wavelength. The addition of the ZnO-Au seeding layer directly influences the optical properties. Plus, regardless of the different approaches, the films demonstrate magnetic anisotropy based on the composition and microstructure of the film which impacted the saturation magnetization and coercivity. This study demonstrates the potential of ZnO-based complex hybrid metamaterials with coupled electro-magneto-optical properties for integrated photonic devices.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12044420/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144010126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ngoan Thi Thao Nguyen, Anh Nguyen Quynh Phan, Thuan Van Tran, Thuy Thi Thanh Nguyen
{"title":"Antibacterial and photocatalytic activities of fruit-extract-mediated synthesized ZnO nanoparticles.","authors":"Ngoan Thi Thao Nguyen, Anh Nguyen Quynh Phan, Thuan Van Tran, Thuy Thi Thanh Nguyen","doi":"10.1039/d5na00211g","DOIUrl":"https://doi.org/10.1039/d5na00211g","url":null,"abstract":"<p><p>ZnO nanoparticles were produced using <i>Morinda citrifolia</i> fruit extract and evaluated for their performance in the removal of Congo red (CR) dye under visible light, as well as their antibacterial activity against different pathogenic strains. The ZnO photocatalyst was characterized according to crystallinity, surface elements and morphology. Various factors related to photocatalytic activity, namely contact time, photocatalyst dosage, initial CR concentration, and pH, were investigated. Under optimal conditions, a moderate ZnO loading achieved a high CR degradation efficiency of 95.23% within 60 min of light irradiation, as determined using response surface methodology (RSM) coupled with face-centered design (CCF). Additionally, a scavenger study confirmed that superoxide radicals (˙O<sub>2</sub> <sup>-</sup>) and holes (h<sup>+</sup>) were major reactive species in the photodegradation of CR. Furthermore, the antibacterial activity was remarkable, with the highest inhibition zone measuring 20.7 mm against <i>Salmonella typhimurium</i>. This study provides a promising approach for developing highly efficient photocatalysts with strong adsorption capabilities whilst also broadening their application as antibacterial agents.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12041882/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144003247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}