Chemical Physics Impact最新文献

{"title":"Facile green synthesis of Co3O4 nanoparticles using turmeric extract: In vitro biomedical activities","authors":"Mais Mazin Al-Hamdani ,&nbsp;Basima A.A. Saleem ,&nbsp;Mohammed Ihsan Majeed ,&nbsp;Mohamed Ahmed ,&nbsp;Helal F. Hetta ,&nbsp;Mohammed S. Saddik ,&nbsp;Stefan Bräse ,&nbsp;Mostafa F. Al-Hakkani","doi":"10.1016/j.chphi.2025.100954","DOIUrl":"10.1016/j.chphi.2025.100954","url":null,"abstract":"<div><div>This research investigates the eco-friendly synthesis and comprehensive characterization of cobalt oxide nanoparticles (CoO<img>NPs) using turmeric ethanolic extract. Fourier transform infrared spectroscopy confirmed the presence of functional groups in the extract and their involvement in nanoparticle stabilization. Ultraviolet-visible spectroscopy revealed an absorption peak at 417 nm, with bandgap energies of 3.45 eV and 3.21 eV for direct and indirect transitions, respectively, as determined by Tauc's plot. X-ray diffraction analysis yielded an average crystallite size of 31.2 nm, while energy-dispersive X-ray spectroscopy verified the elemental composition. The nanoparticles displayed a zeta potential of -21.66 mV, and dynamic light scattering indicated a hydrodynamic diameter of 86.29 nm with a polydispersity index of 0.38. Transmission and scanning electron microscopy demonstrated an average particle size of 26.3 nm, featuring cubic structures and diverse surface morphologies. Antioxidant activity was evaluated using the DPPH assay, resulting in IC₅₀ values of 3.82 mg/mL for the turmeric extract and 1.171 mg/mL for the CoO<img>NPs, compared to 0.42 mg/mL for BHT. The antibacterial efficacy of the CoO<img>NPs was assessed against Gram-positive <em>Bacillus subtilis</em> and Gram-negative <em>Escherichia coli</em>, with minimum inhibitory concentrations of 25.3 mg/L and 22.8 mg/L, respectively. Furthermore, the nanoparticles exhibited substantial anti-cancer effects, with IC₅₀ values of 26.4 µg/mL against Caco-2 cells and 43.6 µg/mL against MCF-7 cells. This work advances green nanotechnology by integrating scientific innovation with environmental sustainability, thereby opening avenues for further research in materials science and biomedical applications.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"11 ","pages":"Article 100954"},"PeriodicalIF":4.3,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145358184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chitosan–PVA composite reinforced with Cu-decorated ZnO nanoparticles for photocatalytic dye degradation","authors":"Medikondu Kishore ,&nbsp;Saif Ali Mohammed Hussein ,&nbsp;Fadam M. Abdoon ,&nbsp;Galla Naga Hima Bindu ,&nbsp;Abdulsattar Abdullah Hamad ,&nbsp;Kuldeep K Saxena ,&nbsp;Gowtham Raj R ,&nbsp;Ashish Kumar ,&nbsp;T. Srinivas","doi":"10.1016/j.chphi.2025.100953","DOIUrl":"10.1016/j.chphi.2025.100953","url":null,"abstract":"<div><div>This study presents a chitosan–polyvinyl alcohol (PVA) composite reinforced with copper-decorated zinc oxide (ZnO–Cu) nanoparticles for wastewater treatment. ZnO–Cu was synthesised via photocatalytic reduction using Cu(NO₃)₂ and CuSO₄·5H₂O salts and incorporated (0.1–0.5 wt%) into a grafted chitosan–PVA matrix. Characterisation (DLS, FT-IR, SEM-EDX, TEM, XRD, thermal analysis) confirmed uniform nanoparticle decoration, crystalline stability, and homogeneous dispersion within the polymer. Photocatalytic activity was assessed by Rhodamine B (RhB) degradation under UVA and visible light. Optimal conditions (pH 5, 2.0 g/L catalyst) achieved 72.1 % RhB removal within 90 min, following pseudo-first-order kinetics (k = 0.0125 min⁻¹, R² = 0.9843), nearly double the rate of pure ZnO–Cu (0.0060 min⁻¹). The composite showed good recyclability, retaining over 80 % activity after five cycles. Antioxidant assays revealed strong DPPH radical scavenging (85 % at 100 µg/mL). Antimicrobial tests indicated moderate antifungal effects against <em>Fusarium oxysporum</em> but limited antibacterial activity, likely due to nanoparticle encapsulation. Overall, the ZnO–Cu/chitosan–PVA composite combines efficient photocatalysis, reusability, and antioxidant activity with a biodegradable support, offering a cost-effective and scalable strategy for dye and organic pollutant removal in wastewater remediation.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"11 ","pages":"Article 100953"},"PeriodicalIF":4.3,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CdTe-MSA quantum dots prepared by a green hydrothermal route as highly selective ‘turn-off’ fluorescent nanosensors for Lead(II) detection in environmental water monitoring","authors":"Faiza I.A. Abdella ,&nbsp;Mohamed Ajroud ,&nbsp;Tahani D. Alanezi ,&nbsp;Dalal Alardan ,&nbsp;Mohamed Bouzidi ,&nbsp;Sarra Boudriga","doi":"10.1016/j.chphi.2025.100952","DOIUrl":"10.1016/j.chphi.2025.100952","url":null,"abstract":"<div><div>In this study, water-dispersible CdTe quantum dots (QDs) capped with mercaptosuccinic acid (MSA) were synthesized via a green one-pot hydrothermal route and explored as efficient fluorescent probes for Pb²⁺ detection in aqueous media. The obtained QDs, with an average diameter of 3.4 nm, exhibited high colloidal stability, strong fluorescence, and a narrow emission profile. Remarkably, a selective fluorescence \"turn-off\" response was observed exclusively in the presence of Pb²⁺ ions, with no significant interference from other tested metal cations. Quantitative analysis using the Stern–Volmer model revealed a linear detection range of 0.2–4 µM (R² = 0.9948) and a low detection limit of 72 nM. Taken with the Benesi–Hildebrand analysis, results confirmed a static quenching mechanism arising from strong Pb²⁺-carboxylate binding, followed by electron transfer and formation of a non-emissive ground-state complex. Adsorption experiments demonstrated that Pb²⁺ uptake follows pseudo-first-order kinetics and fits the Langmuir isotherm model, indicating monolayer adsorption on homogeneous active sites. Recovery tests in spiked real tap water samples achieved 95–109 % recoveries with RSD &lt; 5 %, underscoring the probe's reliability under realistic conditions. These results highlight CdTe-MSA QDs as cost-effective, selective, and sensitive chemosensors with strong potential for environmental monitoring of lead contamination.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"11 ","pages":"Article 100952"},"PeriodicalIF":4.3,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revealing optical, mechanical and radiation shielding behavior of ZnO-PbO2-SiO2 Glasses","authors":"M.I. Sayyed ,&nbsp;J.S. Ashwajeet ,&nbsp;M.N. Raghavendra ,&nbsp;K.A. Mahmoud ,&nbsp;Yasser Maghrbi","doi":"10.1016/j.chphi.2025.100949","DOIUrl":"10.1016/j.chphi.2025.100949","url":null,"abstract":"<div><div>A four zinc lead silicate glass series was fabricated for the optical and radiation shielding applications. To measure the prepared glasses' density, the Archimedes method was used, whereby the measurements showed that a 39–45 mol% PbO₂ increase raises the prepared glasses' density from 5.699 to 6.106 g/cm³. Furthermore, the prepared glasses' absorption spectra were detected via a UV-visible spectrophotometer (UV-T-7200 model) within the 190–1100 nm spectral range. With increasing PbO₂ concentration, the energy band gap of the prepared glasses decreases, while the refractive index increases. Also, to investigate the prepared glasses' mechanical properties, the Makishima-Makinzie theory was applied. The investigation revealed that all the mechanical properties slightly decreased due to the increased concentration of PbO₂. Additionally, across the 0.015–15 MeV energy range, Monte Carlo simulation was applied to evaluate the prepared glasses' radiation shielding properties. Due to the increase in PbO₂ concentration, the evaluations depict the radiation shielding properties' enhancement. The 39–45 mol% PbO₂ concentration increase raises the linear attenuation coefficient (LAC) through 9.074–10.168 cm^–1 (at 0.08 MeV), 0.460–0.498 cm^–1 (at 0.8 MeV), and 0.218–0.238 cm^–1 (at 8 MeV). The LACs of the currently manufactured PbSi glasses are higher than those of commercial glasses, including RS 253, RS 253 G18, RS 323 G19, RS 360, and RS 520.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"11 ","pages":"Article 100949"},"PeriodicalIF":4.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of surface wettability on thermal conductance of Cu-water interface: A molecular dynamics study","authors":"Yanfeng Li ,&nbsp;Ming Ma ,&nbsp;Xiaohui Zhang ,&nbsp;Luyang Chen ,&nbsp;Hua Wang ,&nbsp;Rong Chen","doi":"10.1016/j.chphi.2025.100951","DOIUrl":"10.1016/j.chphi.2025.100951","url":null,"abstract":"<div><div>As micro and nano-scale devices move toward higher integration and miniaturization, efficient thermal management has become increasingly vital. Among the key factors influencing heat dissipation at the nano-scale is the regulation of solid-liquid interfaces. However, the mechanism by which surface wettability alters the interfacial water structure—and consequently affects interfacial thermal transport—remains insufficiently understood. To address this gap, molecular dynamics (MD) simulations were employed to investigate interfacial thermal transport behaviors in Cu-water nanochannels, with a specific focus on the role of wettability in modulating the dynamic characteristics of interfacial water molecules. The results demonstrate that increased wettability significantly enhances thermal boundary conductance (TBC), primarily by promoting the formation of denser and more stable H-bond networks at the interface. This study highlights the critical role of interfacial H-bonding in regulating thermal transport and provides valuable insights for optimizing thermal efficiency in nanofluidic and nanoelectronic systems.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"11 ","pages":"Article 100951"},"PeriodicalIF":4.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145262532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of pheophytin in power generation of photosynthetic fuel cells","authors":"Hitoki Semizo,&nbsp;Ichiro Horii,&nbsp;Reoto Ueda,&nbsp;Yusuke Takahashi,&nbsp;Yasumitsu Matsuo,&nbsp;Hinako Kawakami","doi":"10.1016/j.chphi.2025.100948","DOIUrl":"10.1016/j.chphi.2025.100948","url":null,"abstract":"<div><div>Photosynthetic fuel cells, which yield hydrogen energy from photosynthesis, are attracting attention as a next-generation clean energy source. However, the relationship between the power density of photosynthetic fuel cells and the wavelength of incident light has not been made clear despite being an important factor concerning light absorption. In this study, we have measured the dependence of the power generation in photosynthetic fuel cells for the wavelength of incident light and investigated the key molecules that lead to the power generation. It was found that the power density peaks around the wavelength of the light absorption of chlorophyll. These results indicate that the electron generated by the light absorption in chlorophyll <em>b</em>ecomes the trigger of power generation, the same as the electrons created by the light absorption of chlorophyll <em>b</em>ecome the trigger of the photosynthetic reaction. In addition, we observed the power density enhancement around the light’s wavelength of 520 nm. Considering that the absorption of chlorophyll cannot be observed at around 520 nm, this result indicates that in the power generation of photosynthetic fuel cells, another molecule besides chlorophyll also leads to power generation. Furthermore, we found that Photosynthetic fuel cells using the pheophytin degraded by the desorption of the Mg ion from chlorophyll can also generate power density by light irradiation. From the fact that pheophytin exhibits light absorption at 520 nm, where power density becomes enhanced, the power generation of photosynthetic fuel cells is caused by not only the light absorption of chlorophyll <em>b</em>ut also the light absorption of pheophytin is also important for the power generation.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"11 ","pages":"Article 100948"},"PeriodicalIF":4.3,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electronic structure of 1,4-Phenylenediacrylic acid on graphene and bilayer graphite: from experiments to DFT and ab initio molecular dynamics simulations","authors":"Elaheh Mohebbi ,&nbsp;Eleonora Pavoni ,&nbsp;Pierluigi Stipa ,&nbsp;Marina Petroselli ,&nbsp;Cristina Minnelli ,&nbsp;Luca Pierantoni ,&nbsp;Davide Mencarelli ,&nbsp;Martino Aldrigo ,&nbsp;Emiliano Laudadio ,&nbsp;Mir Masoud Seyyed Fakhrabadi","doi":"10.1016/j.chphi.2025.100947","DOIUrl":"10.1016/j.chphi.2025.100947","url":null,"abstract":"<div><div>In this work, density functional theory (DFT) calculations and ab initio molecular dynamics (AIMD) simulations were implemented to expand the knowledge about the interaction of graphene and bilayer graphite surface with 1,4-Phenylenediacrylic acid (C₁₂H₁₀O₄). The DFT calculations demonstrated that C₁₂H₁₀O₄ molecule has an opening band gap of 0.0062 eV at the top position over the graphene sheet higher than the cross and bridge sites with lower band gaps of 0.0050 eV and 0.0046 eV, respectively. The HOMO-LUMO splitting calculations confirmed more mixture of LUMO states of the C₁₂H₁₀O₄ and graphene in the carbon-carbon double bond in vinyl segment and the COOH functional group in the C₁₂H₁₀O₄@Graphene (top) adsorption site. Then, the increasing of the molecule units on the graphene substrate resulted in a higher electronic band gap of 0.0068 eV and LUMO energy level of 0.9528 than 0.9383 eV for the monomer ones. The AIMD calculations were used to mimic the self-assembly process of the C₁₂H₁₀O₄ molecules on the graphene layer at room temperature, remarking high adsorption capabilities of the latter one. The imaginary and real parts of dielectric constant have been evaluated and for all cases the maximum intensity of the main first peak has been found at 2.43 THz. The results of the static part of dielectric constant showed high <em>Re</em>(<em>ω</em>) for the adsorption of C₁₂H₁₀O₄ monomers on the graphene surface, while by increasing the number of C₁₂H₁₀O₄ units <em>Re</em>(<em>ω</em>) resulted remarkably reduced. The maximum value predicted is 7817 in C₁₂H₁₀O₄@Graphene (cross) along the in-plane xx polarization and 2747 for 4C₁₂H₁₀O₄@Graphene along the in-plane yy directions. Finally, the adsorption of C₁₂H₁₀O₄ layer on the AB stacking bilayer graphite has been considered to simulate the experimental scanning tunnelling microscopy (STM) image of self-assembled C₁₂H₁₀O₄ on highly oriented pyrolytic graphite (HOPG) surface. The zero-band gap has been predicted since the electronic structure of graphene near the K point varies by increasing its thickness.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"11 ","pages":"Article 100947"},"PeriodicalIF":4.3,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Immiscible liquids separation by copper ferrite coated mesh membranes: central composite statistical design-based growth optimization","authors":"Haleh Mahdavi Sabet,&nbsp;Reza Norouzbeigi","doi":"10.1016/j.chphi.2025.100946","DOIUrl":"10.1016/j.chphi.2025.100946","url":null,"abstract":"<div><div>Oil/water separation is a critical environmental and industrial challenge, as oil spills and oily wastewater discharge cause severe ecological damage and resource loss. Conventional separation methods often face limitations such as low efficiency, high operational cost, and poor reusability of separation media. In this study, a stainless steel mesh membrane with a copper oxide seed layer and a micro/nano‑structured copper ferrite coating was fabricated via a hydrothermal‑assisted growth process. The optimal synthesis parameters, determined using a central composite design (CCD), were a growth time of 11 h and 30 min, calcination temperature of 727 °C, and ammonia content of 0.54 mol. X‑ray diffraction (XRD) confirmed the formation of a cubic spinel CuFe₂O₄ phase with minor oxide impurities, while field‑emission scanning electron microscopy (FESEM) revealed a uniform nanorod morphology with enhanced surface roughness. Energy‑dispersive X‑ray spectroscopy (EDS) and elemental mapping showed a homogeneous distribution of Cu, Fe, and O with a Cu:Fe atomic ratio close to 1:2, and vibrating‑sample magnetometry (VSM) indicated ferromagnetic behavior. Surface energy analysis revealed a dominant polar component and negligible dispersive contribution, resulting in strong hydrophilicity and underwater oleophobicity. The optimized membrane achieved a water flux of 37,037 L m⁻² h⁻¹, a separation efficiency above 99.9 %, and an underwater oil contact angle of 146°±3.55° maintaining stable performance over ten reuse cycles. Mechanical abrasion and chemical exposure tests confirmed durability under acidic, alkaline, and saline conditions. Compared to previously reported membranes, the CCD‑optimized copper ferrite coating uniquely integrates mechanical resilience, chemical robustness, and long‑term reusability into a single high‑performance platform for efficient oil/water separation in demanding environments.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"11 ","pages":"Article 100946"},"PeriodicalIF":4.3,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bio-templated green synthesis of ZnO nanostructures using herbal seed Mucilages: A sustainable route for dye adsorption","authors":"Mohammadsaleh Ahmadzadeh,&nbsp;Reza Norouzbeigi","doi":"10.1016/j.chphi.2025.100945","DOIUrl":"10.1016/j.chphi.2025.100945","url":null,"abstract":"<div><div>Conventional methods for removing toxic dyes from aqueous media, often impose high costs or result in the release of secondary pollutions. So as an alternative solution, utilization and assessment of sustainable adsorbents obtained from green chemistry principles are interesting and progressive. This study investigates the synthesis, characterization, and adsorption performance of herbal-mediated zinc oxide (ZnO) nanoparticles to remove Congo red (CR) dye from aqueous solutions. The novelty of this study lies in the bio-templated green hydrothermal synthesis of ZnO nanoparticles using mucilages extracted from four herbal seeds, such as <em>Plantago ovata, Alyssum homalocarpum, Plantago major,</em> and <em>Cydonia oblonga</em> as biogenic directing agents. This approach marks the first report of such a morphologically controlled synthesis using the plant-based precursors, yielding a nanopowder with high crystallinity and mesoporous architecture (average pore size of 24.49 nm and surface area of 10.36 m²/g). Adsorption studies revealed a maximum capacity of 120.48 mg/g, following pseudo-second-order kinetics (R² = 0.9929) and the Langmuir isotherm model (R²=0.997). Thermodynamic analysis confirmed the exothermic nature of the process, with spontaneous and entropy-driven characteristics. The adsorbent exhibited pH-dependent performance, with optimal removal efficiency (98 %) at acidic conditions, attributed to electrostatic interactions between protonated ZnO surfaces and anionic CR species. Regeneration studies showed a 25 % capacity loss over five cycles, linked to mesopore occlusion and surface hydroxyl depletion. This work demonstrates the potential of plant-mediated ZnO as a sustainable adsorbent for textile wastewater treatment while providing mechanistic insights into its structure-performance relationship.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"11 ","pages":"Article 100945"},"PeriodicalIF":4.3,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photocatalytic degradation using Bi-doped SnS Quantum dots and phytotoxicity evaluation of treated effluents through seed germination","authors":"Govindhasamy Murugadoss ,&nbsp;Nachimuthu Venkatesh ,&nbsp;Pandurengan Sakthivel ,&nbsp;Govindhan Thiruppathi ,&nbsp;Palanisamy Sundararaj ,&nbsp;Lalitha Gnanasekaran","doi":"10.1016/j.chphi.2025.100944","DOIUrl":"10.1016/j.chphi.2025.100944","url":null,"abstract":"<div><div>Quantum dots (QDs) are employed in photocatalytic applications because of their distinctive optical characteristics, such as high absorption coefficients and tunable bandgaps, enabling efficient visible light absorption and charge carrier generation. This study focuses on synthesizing homogeneous bismuth-doped tin sulfide (Bi-doped SnS) QDs for environmental remediation. Bi-doped SnS QDs with varying Bi concentrations are prepared via a facile, cost-effective chemical method, and their structural, optical, and morphological characteristics are analyzed through X-ray diffraction (XRD), UV–Vis spectroscopy, and transmission electron microscopy (TEM). TEM results confirm that the catalysts are highly homogeneous and tiny (&lt;5 nm). Photocatalytic activity is assessed through the breakdown of Crystal Violet (CV) and Methylene Blue (MB) when exposed to visible light. High efficiencies of 89.0 % and 95.8 % are achieved for CV and MB, respectively, outperforming undoped SnS. Kinetic analysis reveals a pseudo-first-order reaction, providing insights into the underlying degradation kinetics. A plausible mechanism is proposed, elucidating how Bi-ion doping enhances photocatalytic performance and facilitates dye degradation. Additionally, toxicity evaluation using Vigna radiata seeds demonstrates the efficacy of the degradation process. Treated dye solutions (D-CV and D-MB) show no significant changes in intracellular ROS levels compared to untreated dye and control solutions, confirming reduced toxicity. These findings highlight the enhanced photocatalytic performance of Bi-doped SnS QDs and their potential in environmental purification, advancing the understanding of QD-based photocatalysts for sustainable applications.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"11 ","pages":"Article 100944"},"PeriodicalIF":4.3,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}