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Pioneering nucleation for stable ultraviolet-to-deep-blue illuminating two-dimensional perovskite nanoplates by using saturated salt solution 利用饱和盐溶液制备稳定的紫外-深蓝二维钙钛矿纳米板
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-05-27 DOI: 10.1039/d5nr01488c
Anupriya Singh, Yi-Chia Chen, Kuan-Chang Wu, Yu-Ying Shih, Tzu-Chi Huang, Wei-Lon Wei, Yu-Dian Chen, Priyadarshini H. Nagaraju, Jou-Chun Lin, Bi-Hsuan Lin, Mau-Tsu Tang, Di-Yan Wang
{"title":"Pioneering nucleation for stable ultraviolet-to-deep-blue illuminating two-dimensional perovskite nanoplates by using saturated salt solution","authors":"Anupriya Singh, Yi-Chia Chen, Kuan-Chang Wu, Yu-Ying Shih, Tzu-Chi Huang, Wei-Lon Wei, Yu-Dian Chen, Priyadarshini H. Nagaraju, Jou-Chun Lin, Bi-Hsuan Lin, Mau-Tsu Tang, Di-Yan Wang","doi":"10.1039/d5nr01488c","DOIUrl":"https://doi.org/10.1039/d5nr01488c","url":null,"abstract":"Two-dimensional (2D) metal halide perovskites are promising materials for efficient ultraviolet-to-blue light emission. However, synthesizing stable, phase-pure, and highly fluorescent 2D perovskite nanomaterials remains challenging. Here, a unique nucleation strategy is used for stabilizing the nucleation of the 2D phase in perovskite stock solution, increasing the luminance and stability of the resulting nanoplates. To kinetically control the formation of 2D perovskite nanoplates with specific <em>n</em> values, this strategy is mainly executed by using a saturated solution of PbX<small><sub>2</sub></small> (X = Br or Cl), an optimized amount of CsX and PbX<small><sub>2</sub></small> solution and small amounts of oleylamine (OLM) for adjusting the ratio of [Pb<small><sub><em>x</em></sub></small>Br<small><sub><em>y</em></sub></small>]<small><sup>2<em>x</em>–<em>y</em></sup></small>/Cs<small><sup>+</sup></small> in the stock solution. The saturated PbX<small><sub>2</sub></small> solution plays a role in the formation of the [Pb<small><sub><em>x</em></sub></small>Br<small><sub><em>y</em></sub></small>]<small><sup>2<em>x</em>–<em>y</em></sup></small> complex, resulting in the nucleation of 2D (OLM)<small><sub>2</sub></small>Cs<small><sub><em>n</em>−1</sub></small>Pb<small><sub><em>n</em></sub></small>X<small><sub>3<em>n</em>+1</sub></small> perovskite nanoplates and inhibition of 3D nanocrystal formation. The resulting 2D perovskite nanoplates with specific <em>n</em> values exhibited high photoluminescence (PL) from the ultraviolet to deep-blue region. Most importantly, this is the first report to demonstrate 2D (OLM)<small><sub>2</sub></small>PbCl<small><sub>4</sub></small> perovskite nanoplates with <em>n</em> = 1, yielding unique ultraviolet emission. The 2D (OLM)<small><sub>2</sub></small>Cs<small><sub><em>n</em>−1</sub></small>Pb<small><sub><em>n</em></sub></small>Br<small><sub>3<em>n</em>+1</sub></small> perovskite nanoplates with <em>n</em> = 1, 2, and 3 demonstrated high emission from violet to deep-blue color. X-ray diffraction (XRD) and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) patterns indicate complexation of PbBr<small><sub>2</sub></small> and halide in the DMF solution, forming species of the Pb–halide complex ([Pb<small><sub><em>x</em></sub></small>Br<small><sub><em>y</em></sub></small>]<small><sup>2<em>x</em>–<em>y</em></sup></small>, such as PbBr<small><sub>3</sub></small><small><sup>–</sup></small> and PbBr<small><sub>4</sub></small><small><sup>2–</sup></small>). The Pb–halide complex facilitates the 2D arrangement of PbBr<small><sub>6</sub></small><small><sup>4–</sup></small> octahedra, resulting in phase-pure and stable 2D perovskite nanoplates. Improved luminance and stability are attributed to reduced defects as calculated with the help of Urbach energy. This study provides insights into the formation of 2D perovskite nanoplates controlled by manipulating nucleation in the saturated salt ","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"26 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Self-patterning of Liquid Field’s Metal for Enhanced Performance of Two-dimensional Semiconductors 液体场金属自图像化增强二维半导体性能
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-05-27 DOI: 10.1039/d4nr03845b
Kwanghee ‍Han, Heeyeon Lee, Minseong Kwon, Vinod M. Menon, Chaun Jang, Youngduck Kim
{"title":"Self-patterning of Liquid Field’s Metal for Enhanced Performance of Two-dimensional Semiconductors","authors":"Kwanghee ‍Han, Heeyeon Lee, Minseong Kwon, Vinod M. Menon, Chaun Jang, Youngduck Kim","doi":"10.1039/d4nr03845b","DOIUrl":"https://doi.org/10.1039/d4nr03845b","url":null,"abstract":"Two-dimensional (2D) van der Waals semiconductors show promise for atomically thin, flexible, and transparent optoelectronic devices in future technologies. However, developing high-performance field-effect transistors (FETs) based on 2D materials is impeded by two key challenges, the high contact resistance at the 2D semiconductors-metal interface and the limited effective doping strategies. Here, we present a novel approach to overcome these challenges using self-propagating liquid Field’s metal, a eutectic alloy with a low melting point of approximately 62°C. By modifying pre-patterned electrodes on WSe2 FETs through the deposition of Field’s metal onto contact pad edges followed by vacuum annealing, we create new semimetal electrodes that seamlessly incorporate the liquid metal into 2D semiconductors. This integration preserves the original electrode architecture while transforming to semimetal compositions of Field’s metal such as Bi, In, and Sn modifies the work functions to 2D semiconductors, resulting in reduced contact resistance without inducing Fermi-level pinning and charge carrier mobilities. Our method enhances the electrical performance of 2D devices and opens new avenues for designing high-resolution liquid metal circuits suitable for stretchable, flexible, and wearable 2D semiconductor applications.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"84 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Operando Characterization of Lithium Battery Internal Temperatures via Upconverting Nanoparticle Thermometry 锂电池内部温度的上转换纳米粒子测温操作表征
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-05-27 DOI: 10.1039/d5nr01160d
Fei Hu, Ziyang Ye, Andrea D Pickel, Wyatt E Tenhaeff
{"title":"Operando Characterization of Lithium Battery Internal Temperatures via Upconverting Nanoparticle Thermometry","authors":"Fei Hu, Ziyang Ye, Andrea D Pickel, Wyatt E Tenhaeff","doi":"10.1039/d5nr01160d","DOIUrl":"https://doi.org/10.1039/d5nr01160d","url":null,"abstract":"Charging lithium batteries at high rates requires reliable, accurate temperature characterization for battery safety. Monitoring the external temperature of battery packaging does not provide satisfactory insight into thermal processes within the cell, especially at high rates when significant temperature gradients can develop. For operando characterization of the internal temperatures of Li batteries, a novel thermometry technique based on the luminescence of upconverting nanoparticles (UCNPs) was demonstrated. NaYF<small><sub>4</sub></small>:Yb<small><sup>3+</sup></small>,Er<small><sup>3+</sup></small> UCNPs with an average diameter of 27 nm were introduced onto the surface of battery cell components (anode, cathode, and separator) and shown to have negligible adverse effects on the cell’s performance, while enabling operando measurement of all three component temperatures in a single cell. With application of discharge current of 65 mA in a commercial primary coin cell (CR2032), a maximum temperature difference of 7.9 °C was measured between the cell separator and external packaging. It is envisioned that this technique can be extended to larger format lithium-ion battery cells, revealing non-uniform internal temperature distribution within the cells to better understand critical thermal processes.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"83 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Self-regulated photoresponsive heterogeneous PNIPAM hydrogel actuators 自我调节光响应异质PNIPAM水凝胶致动器
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-05-27 DOI: 10.1039/d4nr05257a
Jingxuan Li, Jiaqi Miao, Alan Cheng Hou Tsang
{"title":"Self-regulated photoresponsive heterogeneous PNIPAM hydrogel actuators","authors":"Jingxuan Li, Jiaqi Miao, Alan Cheng Hou Tsang","doi":"10.1039/d4nr05257a","DOIUrl":"https://doi.org/10.1039/d4nr05257a","url":null,"abstract":"Self-regulated actuators harness material intelligence to enable complex deformations and dynamics, representing a significant advancement in automated soft robotics. However, investigations on self-regulated soft actuators, particularly those using simplified actuation modules such as unidirectional light beam, remain limited. Here, we present a design paradigm for self-regulated actuators based on Poly(N-isopropylacrylamide) (PNIPAM) heterogeneous hydrogel, where self-regulated deformations are actuated by a fixed near-infrared laser. By utilizing the different responsiveness of PNIPAM hydrogels and those integrated with reduced graphene oxide (rGO), we develop three heterogeneous hydrogel configurations: up-down, side-by-side, and hybrid. These designs enable complex biomimetic deformations in soft hydrogel actuators, resembling a bending finger or a flexible industrial manipulator, all actuated by a single fixed laser source. These proposed heterogeneous designs and actuation strategies leverage material intelligence to create soft actuators with enhanced autonomy, paving the way for soft automation, adaptive systems, and biomedical applications.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"6 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A parametric study on CoFe-based ferrite and alloy nanoparticle synthesis cofe基铁氧体及其合金纳米颗粒合成的参数化研究
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-05-27 DOI: 10.1039/d5nr01089f
Andreas Sergides, Catherine Amiens, Sergio Gomez, Antonis Makridis, Liudmyla Storozhuk, Stefanos Mourdikoudis, Nguyen Thi Kim Thanh
{"title":"A parametric study on CoFe-based ferrite and alloy nanoparticle synthesis","authors":"Andreas Sergides, Catherine Amiens, Sergio Gomez, Antonis Makridis, Liudmyla Storozhuk, Stefanos Mourdikoudis, Nguyen Thi Kim Thanh","doi":"10.1039/d5nr01089f","DOIUrl":"https://doi.org/10.1039/d5nr01089f","url":null,"abstract":"Magnetic nanoparticles (MNPs) have received great attention during the last two decades thanks to their potential uses in various application fields such as high-density recording media, magnetic separation and biomedical domains. In this work we focus on the exploratory synthesis of cobalt ferrite and iron-cobalt nanoparticles through thermal decomposition wet-chemical pathways. Several parameters were examined in order to elucidate their impact on the composition, morphology and magnetic behavior of the produced nanomaterials. A range of metallic precursor types is first investigated, with a subsequent focus on the case of acetylacetonate salts. In addition, the reduction of CoFe2O4 to FeCo by employing a salt-matrix annealing stage is explored. Polyol and H2-mediated methods are utilized to prepare FeCo alloy NPs in a direct manner. Multi-core nanostructures were also synthesized, which are very promising for magnetic resonance imaging and magnetic hyperthermia (MH) applications. The post-synthesis thermal treatment helped to convert ferrites to iron-cobalt alloy, with the expense of significant particle size increase and aggregation. Alloy particles formed in one-pot way by polyol routes had &gt; 100 nm size and hexagonal shape, while hydrogen-assisted reduction led to monodisperse ~ 30 nm NPs with remarkable MH activity.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"80 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strong blue-light emission in the flexible branched nanowire-on-nanowire pristine ZnO organizations constructed by a tandem multiprong growth nanoarchitectures 由串联多尖头生长纳米结构构建的柔性分支纳米线-纳米线原始ZnO组织具有强蓝光发射
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-05-27 DOI: 10.1039/d5nr01604e
Jianmin Li
{"title":"Strong blue-light emission in the flexible branched nanowire-on-nanowire pristine ZnO organizations constructed by a tandem multiprong growth nanoarchitectures","authors":"Jianmin Li","doi":"10.1039/d5nr01604e","DOIUrl":"https://doi.org/10.1039/d5nr01604e","url":null,"abstract":"Zinc oxide (ZnO) exhibits an outstanding ability to form a wide range of nano/microstructures. At enhanced environmental temperature (TE = 33.1 C), flexible branched single-crystalline (SC) nanowire-on-nanowire (NW-on-NW) pristine ZnO nanoarchitectures (NAs) have been synthesized for the first time through a simple ambient pressure vapor-phase transport (VPT) process. We proposed that the construction of the spider plant-like ZnO NAs is via a tandem multiprong vapor-solid-solid growth mode using larger gold catalysts instead of the conventional single-prong vapor-liquid-solid growth mechanism. Notably, unlike the previous results of single-component SC ZnO NWs, unexpectedly, the Oxygen-deficient SC NW-on-NW pristine ZnO NAs exhibit a very strong blue-light (BL) solitary emission peak at 494 nm where a self-activated multiphoton process called hierarchical photonic chain reaction (HPCR) mechanism was suggested. Our work enriches the VPT-grown flexible branched SC NW-on-NW pristine ZnO NAs with BL photoluminescence, and provides the first evidence for the multiprong growth that was predicted many years ago.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"26 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genetic algorithm optimization of tree-based models to predict cargo- and carrier-related factors affecting drug release from liposomes† 基于树模型的遗传算法优化预测影响脂质体药物释放的货物和载体相关因素
IF 5.8 3区 材料科学
Nanoscale Pub Date : 2025-05-27 DOI: 10.1039/D5NR00016E
Fatemeh Taghizadeh, Ali Hashemi Baghi, Fatemeh Khodadadi, Yasamin Shahbazi, Masoumeh Salehi, Seyed Mohammad Ayyoubzadeh and Azadeh Haeri
{"title":"Genetic algorithm optimization of tree-based models to predict cargo- and carrier-related factors affecting drug release from liposomes†","authors":"Fatemeh Taghizadeh, Ali Hashemi Baghi, Fatemeh Khodadadi, Yasamin Shahbazi, Masoumeh Salehi, Seyed Mohammad Ayyoubzadeh and Azadeh Haeri","doi":"10.1039/D5NR00016E","DOIUrl":"10.1039/D5NR00016E","url":null,"abstract":"<p >Liposomal drug delivery systems have shown promising potential to improve drug delivery in several aspects. Precise <em>in vitro</em> characterization of formulated liposomes is vital to achieve proper <em>in vivo</em> function. In particular, <em>in vitro</em> release testing of liposomes offers crucial insights for predicting <em>in vivo</em> drug release behavior, guiding the development of more effective liposomal formulations. Herein, random forest (RF)- and XGboost-genetic algorithms were implemented to establish a model to predict release profiles of liposomes based on critical characteristics of carriers, cargoes, and release media. The models were trained with a dataset consisting of release parameters of 203 different liposomal formulations extracted from the literature, divided into three categories: all cargoes, therapeutics with log <em>P</em> &lt; 1, and log <em>P</em> &gt; 1. The SHapley additive exPlanations (SHAP) approach was used to determine how data contributes to the model prediction. A mean squared error of 1.648 highlighted the capability of the genetic algorithm to optimize the hyperparameters of the tree-based models. Furthermore, the developed models demonstrated high accuracy as evidenced by loss functions and statistical metrics such as root mean squared error, mean absolute error, and R-squared. Our results shed light on the distinct influence of phase transition temperature, drug concentration, log <em>P</em>, water solubility, molecular weight, vesicle size, cholesterol to phospholipid molar ratio, and surfactant concentration in the release medium on drug release at different phases of the release profiles. The predictive models developed in this study can facilitate the design of an ideal liposomal formulation for any desired release profile.</p>","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":" 23","pages":" 14301-14318"},"PeriodicalIF":5.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electronic structure tunability of carbon-based 1D-polymers combining cross-conjugation and nitrogen doping 碳基一维聚合物结合交叉共轭和氮掺杂的电子结构可调性
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-05-27 DOI: 10.1039/d5nr01235j
Adriana Elizabeth Candia, Manuel Vilas-Varela, Myriam Haydee Aguirre, Celia Rogero, David Serrate, Diego Peña, Jorge Lobo-Checa
{"title":"Electronic structure tunability of carbon-based 1D-polymers combining cross-conjugation and nitrogen doping","authors":"Adriana Elizabeth Candia, Manuel Vilas-Varela, Myriam Haydee Aguirre, Celia Rogero, David Serrate, Diego Peña, Jorge Lobo-Checa","doi":"10.1039/d5nr01235j","DOIUrl":"https://doi.org/10.1039/d5nr01235j","url":null,"abstract":"Quasi-one-dimensional polymer structures with extended π-electron systems stand out due to their remarkable application in light-emitting diodes and devices. Upon smart choice of their building units, such carbon-based organic nanoarchitectures provide excellent optoelectronic properties by tuning their dimensionality, atomic structure or intrinsic doping. Here, we generate and study three canonical cross-conjugated quasi one-dimensional chains with controlled nitrogen intrinsic doping, which is selectively introduced into their poly-phenylene backbones. By means of scanning tunneling microscopy and spectroscopy we corroborate that the cross-conjugation that break the chain linearity is exclusively responsible of the electronic confinement in the straight segments. Moreover, we demonstrate that the LUMO state exhibits similar spatial distribution for the cross-conjugated polymers independently of the pyridine content of the initial precursor. Despite this coincidence, the semiconducting character and other relevant electronic properties of the polymers are found to depend both on the chain morphology and on the precise position and number of doping nitrogen atoms synthetically introduced into the molecular precursors. We compare these results to related previous studies, which allows us to unambiguously validate the opto-electronic tunability upon the choice of the polymers’ building units.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"45 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Regenerated and reformed gold and titanium dioxide quantum dots from waste for sustainable and efficient environmental monitoring† 从废物中再生和改造金和二氧化钛量子点,用于可持续和高效的环境监测
IF 5.8 3区 材料科学
Nanoscale Pub Date : 2025-05-27 DOI: 10.1039/D4NR04726E
Zain Ul Abideen, Rasoul Khayyam Nekouei, Mohsen Hajian Foroushani, Samane Maroufi, Farshid Pahlevani and Veena Sahajwalla
{"title":"Regenerated and reformed gold and titanium dioxide quantum dots from waste for sustainable and efficient environmental monitoring†","authors":"Zain Ul Abideen, Rasoul Khayyam Nekouei, Mohsen Hajian Foroushani, Samane Maroufi, Farshid Pahlevani and Veena Sahajwalla","doi":"10.1039/D4NR04726E","DOIUrl":"10.1039/D4NR04726E","url":null,"abstract":"<p >Driven by the urgent need for sustainable materials in advanced technologies, this study investigates the potential of regenerated and reformed waste materials containing Au and TiO<small><sub>2</sub></small> quantum dots (R-Au–TiO<small><sub>2</sub></small> QDs), derived from industrial waste, as a viable alternative to commercial TiO<small><sub>2</sub></small> (C-TiO<small><sub>2</sub></small>) for photocatalytic applications. The R-Au–TiO<small><sub>2</sub></small> QDs demonstrate a high purity of 99.8 wt% and a particle size of less than 10 nm. The presence of Au (0.24 wt%) further enhances the photocatalytic performance of R-Au–TiO<small><sub>2</sub></small> QDs through localized surface plasmon resonance (LSPR), leading to superior degradation rates of methylene blue (MB) when deposited on flexible aluminum foil substrates under UV and solar light. R-Au–TiO<small><sub>2</sub></small> QDs achieve a degradation rate of 82.5% with a rate constant of 0.029 min<small><sup>−1</sup></small> under UV light, representing a 28% increase in degradation rate and a 70% increase in the rate constant compared to 64.5% and 0.017 min<small><sup>−1</sup></small>, respectively, for C-TiO<small><sub>2</sub></small>. Under the solar simulator, R-Au–TiO<small><sub>2</sub></small> QDs also outperform C-TiO<small><sub>2</sub></small>, achieving a degradation rate of 68%, further highlighting their effectiveness. These results are attributed to smaller particle size, higher surface area, enhanced light absorption and improved charge separation in the R-Au–TiO<small><sub>2</sub></small> hybrid material. This study demonstrates that R-Au–TiO<small><sub>2</sub></small> QDs not only match, but often surpass, the performance of commercial TiO<small><sub>2</sub></small>, offering a cost-effective and environmentally friendly solution for UV sensing, environmental monitoring, and water purification systems. These findings advocate for the strategic utilization of waste resources containing valuable elements to regenerate high-performance materials, thereby contributing to the development of a circular and sustainable economy.</p>","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":" 23","pages":" 14368-14380"},"PeriodicalIF":5.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/nr/d4nr04726e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145442","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}
引用次数: 0
Exploring Interfacial Magnetism in All-Spinel Fe3O4/MgCr2O4/Fe3O4 Epitaxial Heterostructures 全尖晶石Fe3O4/MgCr2O4/Fe3O4外延异质结构的界面磁性研究
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-05-27 DOI: 10.1039/d5nr00971e
Francesco Offi, FRANCESCO BORGATTI, Pasquale Orgiani, Vincent Polewczyk, Sandeep Kumar Chaluvadi, Shyni Punathum Chalil, Aleksandr Petrov, Federico Motti, Gian Marco Pierantozzi, Giancarlo Panaccione, Bogdan Rutkowski, Paolo Mengucci, Gianni Barucca, Deepnarayan Biswas, Tien-Lin Lee, Emiliano Marchetti, Alberto Martinelli, Davide Peddis, Gaspare Varvaro
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