ACS Applied Nano Materials最新文献

{"title":"Smartphone-Based Bimetallic Single-Atom Nanozyme Sensor Array Integrated with Deep Learning for Rapid Biothiol Detection","authors":"Jiawei Wang,&nbsp;Zhuohang Huang,&nbsp;Xiaomeng Yu,&nbsp;Bin Zhou,&nbsp;Wenjie Xu,&nbsp;Xi Zhou* and Zhiwei Chen*,&nbsp;","doi":"10.1021/acsanm.4c0719710.1021/acsanm.4c07197","DOIUrl":"https://doi.org/10.1021/acsanm.4c07197https://doi.org/10.1021/acsanm.4c07197","url":null,"abstract":"<p >Rapid and sensitive biothiol detection is critical for domains spanning food safety, environmental monitoring, and clinical diagnostics. Here, we report the development of a portable and highly sensitive point-of-care testing (POCT) platform that integrates bimetallic single-atom nanozymes (CuZn-N) with smartphone technology and deep learning algorithms. We synthesized CuZn-N bimetallic single-atom nanozymes exhibiting superior peroxidase-like activity and constructed a dual-channel colorimetric sensor array. The array detects biothiols via distinct colorimetric responses generated by analyte-specific inhibition of single-atom nanozymes (SAzyme) activity. By leveraging the high-resolution capabilities of smartphones and the advanced YOLO v5 deep learning algorithm, we developed a smartphone application, “ThiolSense”, which analyzes color changes in images to achieve sensitive and selective detection of cysteine (Cys), glutathione (GSH), and homocysteine (Hcy). The application employs image segmentation and feature extraction to process RGB color channel data, assisted with principal component analysis (PCA) and hierarchical clustering analysis (HCA) for enhanced accuracy. We demonstrated the platform’s potential in real-sample testing by quantifying biothiols in fetal bovine serum (FBS) and human serum (HS). The smartphone-equipped CuZn-N bimetallic single-atom nanozyme sensor array offers high sensitivity, portability, and user-friendly operation, facilitating rapid and accurate on-site detection. This innovative integration of nanomaterials, smartphone technology, and artificial intelligence presents a powerful tool for biosensing applications, with broad implications for critical fields requiring efficient biothiol detection.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 11","pages":"5481–5493 5481–5493"},"PeriodicalIF":5.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-Pressure Annealing and Surface Passivation of Self-Powered Wide-Bandgap CsPbCl3 Nanostructure-Based Ultraviolet Photodetectors","authors":"Xingsheng Wang,&nbsp;Guojun Wen,&nbsp;Siyi Cheng,&nbsp;Xianhua Tan and Xingyue Liu*,&nbsp;","doi":"10.1021/acsanm.4c0735410.1021/acsanm.4c07354","DOIUrl":"https://doi.org/10.1021/acsanm.4c07354https://doi.org/10.1021/acsanm.4c07354","url":null,"abstract":"<p >The all-inorganic wide-bandgap CsPbCl₃ perovskite is drawing increasing attention in the ultraviolet detection field due to its salient optoelectronic property and ultraviolet durability. However, the abundant intrinsic defects in polycrystalline CsPbCl₃ nanofilms limit the UV detection performance of self-powered CsPbCl₃ photodetectors. In this study, an efficient low-pressure annealing technique and a 4-chlorobenzoic acid (ClBA) modification strategy are proposed to suppress both the bulk and surface defects of evaporated CsPbCl₃ nanofilms. It is found that low-pressure annealing can effectively ameliorate the crystallization dynamics of the CsPbCl₃ nanocrystal, yielding a more homogeneous film with higher crystallinity and UV absorption capability as well as larger grain sizes and lower trap density. These are favorable for the photoelectric conversion process, thus contributing to a much enhanced UV detection performance. The multifunctional ClBA is further introduced to passivate the surface defects of the CsPbCl₃ nanofilm. The electron-accepting end group of carboxyl in ClBA can effectively coordinate with the positively charged Pb²⁺, helping to suppress the Cl^– vacancy defect and trap-assisted nonradiative carrier recombination. The ClBA passivation can also alleviate the interfacial energy barrier and enhance the charge transfer driving force, which is beneficial for improving the sensitivity and reducing the dark current level of the device. The best-performing photodetector achieves an excellent on/off ratio of 1.33 × 10⁶, a responsivity <i>R</i> of 0.26 A/W, and a detectivity <i>D*</i> of 1.14 × 10¹³ Jones at 0 V bias, more superior than those of the previously reported self-powered CsPbCl₃ counterparts. Additionally, our photodetector exhibits salient operational and ambient stability, conducive to their practical applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 11","pages":"5568–5578 5568–5578"},"PeriodicalIF":5.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Janus-Structured Silver Nanowires/Cellulose Nanofiller/Fe3O4 Nanocomposite Films for EMI Shielding and Thermal Management","authors":"Jiayi Li,&nbsp;Xinxin Cai,&nbsp;Ruixiang Zhou,&nbsp;Jiwen Hu,&nbsp;Bin Wang*,&nbsp;Xinqi Wang and Shudong Lin*,&nbsp;","doi":"10.1021/acsanm.5c0029310.1021/acsanm.5c00293","DOIUrl":"https://doi.org/10.1021/acsanm.5c00293https://doi.org/10.1021/acsanm.5c00293","url":null,"abstract":"<p >With the rapid development of aerospace, smart wearable electronic devices, and 5G technology, the issue of electromagnetic radiation has gained significant prominence, necessitating the urgent development of efficient electromagnetic shielding materials. In this study, a Janus-structured AgNWs/CNF/Fe₃O₄ nanocomposite film was successfully prepared using nanomaterials through vacuum filtration and hot-pressing methods. The Janus-structured nanocomposite film exhibited excellent electrical conductivity of 196,078 S/m and efficient electromagnetic interference (EMI) shielding performance of 76.0 dB (AgNW side). Additionally, it demonstrated a remarkable tensile strength of 67.8 MPa and favorable temperature-voltage response characteristics (high Joule heating temperature at low supply voltage (1.2 V, 147.4 °C) and fast response time (7 s)). These superior properties were attributed to the synergistic coupling between AgNWs and Fe₃O₄. Therefore, this flexible and multifunctional Janus-structured nanocomposite film, which combined efficient EMI shielding and thermal management performance, holds significant application potential in the aerospace, smart wearable electronics, and 5G communication fields.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 11","pages":"5784–5794 5784–5794"},"PeriodicalIF":5.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143666816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insight into the Effect of h-BN Modification on the Performance of MoS2 Phototransistors with van der Waals Contacts","authors":"Fobao Huang*,&nbsp;Qingyuan Yang,&nbsp;Yiyao Sun,&nbsp;Jianghua Chen,&nbsp;Chunxiao Liu,&nbsp;Yong Chao,&nbsp;Junjun Hu,&nbsp;Gongwei Hu* and Wei Huang*,&nbsp;","doi":"10.1021/acsanm.5c0054010.1021/acsanm.5c00540","DOIUrl":"https://doi.org/10.1021/acsanm.5c00540https://doi.org/10.1021/acsanm.5c00540","url":null,"abstract":"<p >To adapt to future applications in traditional silicon-based integrated circuits, most of the research on MoS₂ phototransistors is currently conducted on Si/SiO₂ substrates. However, the SiO₂ surface contains a large number of dangling bonds, defects, and impurities, which serve as charge traps that severely affect the performance of MoS₂ phototransistors. In this paper, we fabricated MoS₂ and h-BN/MoS₂ phototransistors with van der Waals contacts using an all-dry transfer technique. Compared to MoS₂ devices, the h-BN/MoS₂ devices exhibit a higher on/off ratio, larger carrier mobility, faster response speed, larger photoelectric fitting index (α), and smaller hysteresis, while there is a certain extent reduction in responsivity and external quantum efficiency. These results are attributed to the introduction of the h-BN substrate modification layer, which isolates the influence of dangling bonds, defects, and impurities of the SiO₂ substrate surface, significantly reducing hole traps at the interface. At the same time, this also weakens the photogating effect in the devices. This work comprehensively explains the interconnected effect and mechanisms of h-BN modification on various aspects of device performance in MoS₂ phototransistors fabricated using the all-dry transfer technique, paving the way for designing van der Waals optoelectronic devices with different functionalities and performance in the future.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 11","pages":"5805–5814 5805–5814"},"PeriodicalIF":5.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143666817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three-Dimensional-Nanostructured Superhydrophilic Mesh Membrane for Oil/Water Separation via a Corrosion-Mediated Self-Assembly Strategy","authors":"Kai Sun*,&nbsp;Xin Hong,&nbsp;Tianlu Yu* and Zhecun Wang*,&nbsp;","doi":"10.1021/acsanm.5c0015010.1021/acsanm.5c00150","DOIUrl":"https://doi.org/10.1021/acsanm.5c00150https://doi.org/10.1021/acsanm.5c00150","url":null,"abstract":"<p >Superhydrophilic surface materials featuring underwater superoleophobicity are highly useful for oil/water separation. However, the limited interfacial stability and anti-oil-fouling properties seriously hinder their practical applications. Here, a mesh membrane covered with metal phosphate nanoflowers is designed using a simple and effective in situ solution corrosion-mediated self-assembly (CMSA) strategy. This simple and rapid method uses a 10% phosphoric acid solution under controlled conditions for 6–18 h to directly generate three-dimensional (3D) nanostructures on the surface through electrochemical dissolution and regeneration. Additionally, the in situ reaction enhances the homogeneity and stability of the nanostructures on the surface, inducing excellent interfacial stability. The unique 3D nanoflower structure and phosphate groups endow the mesh membrane with excellent superwettability and oil-fouling resistance. Compared with existing technologies, this mesh membrane, benefiting from its remarkable anti-oil-fouling properties and superior stability, demonstrates enhanced performance in the continuous and long-term separation of oil from various oily wastewaters, including immiscible oil/water mixtures, oil/water emulsions, and floating oils. Its exceptional anti-oil-fouling property, high separation capacity, and excellent long-term durability highlight its practical potential for cleaning oily effluents.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 11","pages":"5653–5662 5653–5662"},"PeriodicalIF":5.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lab-Scale Synthesis of Hollow Iron Oxide Nanocapsules with a Metastable Magnetic Maghemite Phase","authors":"Rose H. Pham,&nbsp;Ireshika Wickramasuriya,&nbsp;Maxwell Wright,&nbsp;Valentin Taufour,&nbsp;Saeed Kamali* and Beth S. Guiton*,&nbsp;","doi":"10.1021/acsanm.4c0653510.1021/acsanm.4c06535","DOIUrl":"https://doi.org/10.1021/acsanm.4c06535https://doi.org/10.1021/acsanm.4c06535","url":null,"abstract":"<p >Iron oxide particles are of interest due to their potential to deliver functionality through their magnetic properties and their potential biocompatibility. Similarly, hollow particles are of interest for their potential to provide a chamber for a chemical reaction or delivery. In previous work, we used high-vacuum and high-resolution in situ transmission electron microscopy (TEM) to determine the compositional, structural, and morphological changes accompanying the dehydration of an iron oxyhydroxide nanorod as it formed a series of metastable iron oxide nanocapsule phases. Though in situ TEM of individual particles has the potential (as in this case) to reveal pathways to achieve metastable phases for new materials and applications, a means must be found to translate the findings from individual particle observations to lab-scale synthesis. Such scaling up can be nontrivial due to complexities such as interfacial interactions, diffusion pathways, density, and so on introduced when moving to a bench-scale sample. Here, we report the production of scalable, phase-pure, spinel-structured, hollow iron oxide nanocapsules of the maghemite (γ-Fe₂O₃) phase. The structure and size of the nanocapsules were controlled through the synthesis of the initial iron oxyhydroxide phase (β-FeOOH). The phase isolation and hollowing processes were performed through thermal treatments under specific external conditions. Nanocapsule morphology and size for all iron oxide phases were confirmed through scanning and transmission electron microscopy, while the crystal structure and phases were verified through X-ray diffraction, fast Fourier transform diffraction analysis, and Mössbauer spectroscopy. Energy-dispersive X-ray spectroscopy spectra and elemental mapping were utilized to obtain compositional data, and superconducting quantum interference device (SQUID) magnetometer measurements were used to characterize the paramagnetic, ferrimagnetic, and potential superparamagnetic behavior of the ensemble. We anticipate that the ability to produce anisotropic hollow nanoparticles with spontaneous magnetization and potentially complex magnetic characteristics will greatly increase the versatility and applicability of iron oxide nanoparticles.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 11","pages":"5315–5325 5315–5325"},"PeriodicalIF":5.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrospun Nanofibers with Antibacterial and Antioxidant Activities for Air Purification","authors":"Renu Devi,&nbsp;Manish Kumar,&nbsp;Jagdish Singh,&nbsp;Jaspreet Kaur Randhawa*,&nbsp;Navneet Kaur* and Narinder Singh*,&nbsp;","doi":"10.1021/acsanm.4c0722210.1021/acsanm.4c07222","DOIUrl":"https://doi.org/10.1021/acsanm.4c07222https://doi.org/10.1021/acsanm.4c07222","url":null,"abstract":"<p >The demand for air filtration products has surged as air pollution worsens daily, particularly during the pandemic wave. Traditional air filters frequently require replacement because of the rapid dispersion of electrostatic charge and the buildup of harmful microorganisms. According to the World Health Organization, the majority of deaths related to air pollution are caused by noncommunicable diseases. To tackle these challenges, we have performed a centrifugal spinning experiment under controlled conditions, maintaining a temperature of 21 ± 5 °C and humidity below 36 ± 5%, with the nozzle positioned 10 cm from the collector. Nanofibrous membranes <b>PZCR</b> and <b>PCCR</b> were fabricated using an electrospinning method that offers strong antibacterial properties, effective air filtration, and the ability to be reused. These membranes consist of PAN nanofibers doped with ZnO and Cu nanoparticles and coated with a chitosan solution containing the antibacterial compound. Further, characterization was done by using FESEM, AFM, FTIR, and EDX spectroscopy. The average diameter of the PAN nanofiber before doping was 153 to 184 nm, and after doping, ZnO and Cu NPs were 225 ± 5 nm and 455 ± 5 nm, respectively. There is nearly no impact on the filtering efficiency and percentage of air resistance of the nanofiber mats, even after being treated with isopropyl alcohol, confirming compliance with ISO 16890. The membranes demonstrated a 99.9% bactericidal rate against <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> bacteria, as confirmed by the ruptured bacterial cell membranes. The significant surface area relative to their volume, customizable porous structure, and ease of preparation, electrospun nanofibers make the material an ideal candidate for filtration materials, attracting significant interest in air filtration applications. Furthermore, the straining potential of these sheets remains nearly at the initial level after simple washing, outperforming commercial-grade filters.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 11","pages":"5513–5526 5513–5526"},"PeriodicalIF":5.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Albumin/Magnetite/Hematoporphyrin Composite Nanoparticles as Drug Carriers for the Photodynamic Therapy of Oral Squamous Cell Carcinoma","authors":"Andong Liu,&nbsp;Haining Xia,&nbsp;Hao Yang,&nbsp;Xinyi Xu,&nbsp;Chengjing Li,&nbsp;Xiaowen Li,&nbsp;Ruiguo Chen,&nbsp;Kun Ma*,&nbsp;Jun Hou* and Lei Sun*,&nbsp;","doi":"10.1021/acsanm.5c0120610.1021/acsanm.5c01206","DOIUrl":"https://doi.org/10.1021/acsanm.5c01206https://doi.org/10.1021/acsanm.5c01206","url":null,"abstract":"<p >Hematoporphyrin, a photosensitizer, has substantial potential for photodynamic therapy (PDT) in oral squamous cell carcinoma (OSCC). However, the strong hydrophobic interactions between hematoporphyrin molecules cause them to easily aggregate, leading to poor solubility in water and suppression of active photoreactive sites. To address these challenges, a biomimetic synthesis strategy was employed to organically integrate ferroferric oxide (Fe₃O₄) nanoparticles with hematoporphyrin, resulting in the construction of highly hydrophilic and efficient Fe₃O₄/Haematoporphyrin@BSA (BMH) nanoparticles. This delivery system effectively improved the solubility, bioavailability, and PDT efficiency of hematoporphyrin. Compared with free hematoporphyrin, the BMH nanoparticles exhibited a smaller average hydrated particle size with excellent dispersion in the PBS solution. Additionally, BMH nanoparticles demonstrated efficient cellular uptake by CAL27 tumor cells in a shorter time frame. PDT experiments on CAL27 tumor cells revealed that under the same light exposure, the BMH nanoparticles resulted in a 58% increase in ROS generation, leading to a 57% increase in cell death compared to the hematoporphyrin group. Notably, the electron spin resonance spectrometer (ESR) results and structural analysis of the protein cages suggested that the organic integration of Fe₃O₄ nanoparticles with hematoporphyrin enhanced electron transfer and increased free radical production, thereby improving overall PDT efficiency. This study demonstrated that highly biocompatible BMH protein-cage nanoparticles significantly enhanced the therapeutic potential of hematoporphyrin for PDT in OSCC.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 11","pages":"5885–5893 5885–5893"},"PeriodicalIF":5.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multifunctional CeO2/Graphene Nanoribbon Nanozyme for Synergistic Photothermal and Chemodynamic Therapy of Tumor","authors":"Lixing Lin,&nbsp;Tianliang Li,&nbsp;Yitong Wang,&nbsp;Yingying Chen,&nbsp;Zhenzhen Li and Lingyan Feng*,&nbsp;","doi":"10.1021/acsanm.4c0663510.1021/acsanm.4c06635","DOIUrl":"https://doi.org/10.1021/acsanm.4c06635https://doi.org/10.1021/acsanm.4c06635","url":null,"abstract":"<p >Nanozymes, simulating natural enzymatic actions, have shown substantial promise in catalytic tumor therapy. Nevertheless, developing nanozymes with multiple catalytic functions for multimodal nanodiagnosis remains a challenging task. Here, we report a type of quasi-one-dimensional graphene nanoribbons (GNRs) can firmly anchor and disperse CeO₂ nanoparticles by modifying polyethylene glycol (PEG) modification to form a stable CeO₂/GNRs-PEG nanocomposite. This material possesses multiple enzymatic activities, facilitating the transformation of H₂O₂ into hydroxyl radicals within the tumor environment, degrading H₂O₂ to produce O₂, and continuously converting O₂ into O₂^·– to increase oxidative stress in the tumor microenvironment. Notably, the good photothermal effect of CeO₂/GNRs-PEG can enhance the generation of ·OH and O₂^·–, increasing the level of oxidative stress within cells and thereby killing tumor cells. The ability of photothermal effects to enhance the generation of oxygen from hydrogen peroxide also leads to the production of more O₂^·– which can promote tumor ablation. Overall, multifunctional nanozymes loaded with GNRs present excellent promise as a catalytic therapy material in many fields.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 11","pages":"5326–5336 5326–5336"},"PeriodicalIF":5.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine Vision-Assisted Selective Adsorption and Photothermal Catalytic Activity from Tunable Built-in Electric Field of Ti3+, N, S-Codoped Hollow TiO2 Nanostructures","authors":"Shiqi Xia,&nbsp;Xuan Zhao,&nbsp;Chengjiang Zhang,&nbsp;Lianqing Chen*,&nbsp;Shiwei Jin,&nbsp;Dingguo Tang*,&nbsp;Benjun Xi,&nbsp;Hua Zhou* and Yu Cai,&nbsp;","doi":"10.1021/acsanm.5c0036410.1021/acsanm.5c00364","DOIUrl":"https://doi.org/10.1021/acsanm.5c00364https://doi.org/10.1021/acsanm.5c00364","url":null,"abstract":"<p >To modulate an electric field and oxygen vacancies within the same semiconductor instead of different heterojunctions, using hollow inlaid TiO₂ magic dices as a model, metal ions Ti³⁺ and nonmetal elements N and S were simultaneously doped into the sole semiconductor through the one-pot ultrasonic solvothermal method. By adjusting the reaction conditions, including the selection of alcohols, the ratio of ethylene glycol to acetic acid, and the content of methionine, a large-surface-area and mesoporous hollow inlaid magic dices structure was successfully constructed and fully characterized. <b>On the catalyst surface</b>, due to the uneven charge distribution caused by cationic and anion species and multihierarchical mesoporous morphology, it was found that there was great adsorption capacity and selective adsorption properties for different types of dyes with assisted machine vision monitoring after thousands of machine learning. Mechanism and kinetic investigations indicated that the selective adsorption of RhB on <b>0.25TNS</b> obeyed the Langmuir isothermal adsorption model with the pseudo-second-order equation. <b>Inside the catalyst lattice</b>, codoping of cation and anion ions accompanied by abundant oxygen vacancies led to the formation of a tunable internal built-in electric field with the doping amounts and a Ti–S–Ti–N-Ti electronic bridge, accelerating the separation of charge carriers and significantly enhancing the photothermal catalytic activity. This study provides important insights and a method for the simultaneous doping of anions and cations into the same substance to form a tunable built-in electric field.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 11","pages":"5748–5762 5748–5762"},"PeriodicalIF":5.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}