journal
https://read.qxmd.com/read/38393678/a-sensitive-lateral-flow-test-strip-sensor-for-visual-detection-of-acid-red-18-in-food-using-bicentric-emission-carbon-dots
#1
JOURNAL ARTICLE
Houwen Hu, Zewei Chen, Tingting Li, Linfan Wang, Haoming Xing, Guoqiang Guo, Gang Wang, Da Chen
Hazardous synthetic colorants have found widespread use in food production, and excessive consumption of these pigments can pose potential risks to human health. In this study, we propose an ultrasensitive fluorescence method for the analysis of Acid Red 18 (AR18) in food products. The method is based on the nitrogen-doped carbon dots (N-CDs) derived from tris and resorcinol through a hydrothermal way. The as-synthesized N-CDs exhibit two emission centers at 425 nm and 541 nm, corresponding to the excitation wavelengths of 377 nm and 465 nm, respectively...
February 23, 2024: Nanoscale
https://read.qxmd.com/read/38393670/metal-organic-framework-based-s-scheme-heterojunction-photocatalysts
#2
REVIEW
Ling Yuan, Peiyang Du, Luli Yin, Jiamin Yao, Jing Wang, Chao Liu
Photocatalysis is a promising technology to resolve energy and environmental issues, where the design of high-efficiency photocatalysts is the central task. As an emerging family of photocatalysts, semiconducting metal-organic frameworks (MOFs) with remarkable features have demonstrated great potential in various photocatalytic fields. Compared to MOF-based photocatalysts with a single component, construction of S-scheme heterojunctions can render MOFs with enhanced charge separation, redox capacity and solar energy utilization, and thus improved photocatalytic performance...
February 23, 2024: Nanoscale
https://read.qxmd.com/read/38391256/a-porous-micro-nano-structured-polyethylene-film-prepared-using-a-picosecond-laser-for-agricultural-passive-cooling
#3
JOURNAL ARTICLE
Qingwei Wang, Dongkai Chu, Qilin Wang, Xiangyue Xu, Kai Yin, Shuoshuo Qu, Peng Yao, Chuanzhen Huang
Passive cooling materials, as a promising choice for mitigating the global energy crisis, have limited use as their cooling effects are usually weakened or lost by dust contamination. In this study, a passive cooling polyethylene (PE) film with self-cleaning properties is prepared by picosecond laser ablation. Numerous root-like hierarchical porous micro/nano-structures were obtained on the double side of the PE film. The outside (toward air) shows excellent self-cleaning, corrosion resistance, and anti-friction properties...
February 23, 2024: Nanoscale
https://read.qxmd.com/read/38391246/employing-nano-enabled-artificial-intelligence-ai-based-smart-technologies-for-prediction-screening-and-detection-of-cancer
#4
REVIEW
Vibhas Chugh, Adreeja Basu, Ajeet Kaushik, Manshu, Shekhar Bhansali, Aviru Kumar Basu
Cancer has been classified as a diverse illness with a wide range of subgroups. Its early identification and prognosis, which have become a requirement of cancer research, are essential for clinical treatment. Patients have already benefited greatly from the use of artificial intelligence (AI), machine learning (ML), and deep learning (DL) algorithms in the field of healthcare. AI simulates and combines data, pre-programmed rules, and knowledge to produce predictions. Data are used to improve efficiency across several pursuits and tasks through the art of ML...
February 23, 2024: Nanoscale
https://read.qxmd.com/read/38391244/multifunctional-black-phosphorus-pressure-sensors-with-bending-angle-monitoring-and-direction-recognition-characteristics
#5
JOURNAL ARTICLE
Jiangtao Chen, Guobin Ma, Xinyi Wang, Tiancheng Song, Yirun Zhu, Shuangju Jia, Xuqiang Zhang, Yun Zhao, Jianbiao Chen, Bingjun Yang, Yan Li
Flexible pressure sensors, an important class of intelligent sensing devices, are widely explored in body-motion and medical health monitoring, artificial intelligence and human-machine interaction. As a unique layered nanomaterial, black phosphorus (BP) has excellent electrical, mechanical, and flexible characteristics, which make it a promising candidate for fabricating high-performance pressure sensors. Herein, hierarchically structured BP-based pressure sensors were constructed. The sensors exhibit high sensitivity, stability and a wide sensing range and respond to various human motions including finger pressure, swallowing, and wrist bending...
February 23, 2024: Nanoscale
https://read.qxmd.com/read/38390689/photocatalytic-antibacterial-agents-based-on-inorganic-semiconductor-nanomaterials-a-review
#6
REVIEW
Ping She, Shuming Li, Xuejing Li, Heng Rao, Xiaoju Men, Jun-Sheng Qin
Microbial contamination and antibiotic pollution have threatened public health and it is important to develop a rapid and safe sterilization strategy. Among various disinfection strategies, photocatalytic antibacterial methods have drawn increasing attention due to their efficient disinfection performances and environment-friendly properties. Although there are some reviews about bacterial disinfection, specific reviews on photocatalysis focused on inorganic semiconductor nanomaterials are rarely reported. Herein, we present a systematic summary of recent disinfection developments based on inorganic nanomaterials (including metal oxides, sulfides, phosphides, carbon materials, and corresponding heterostructures) over the past five years...
February 23, 2024: Nanoscale
https://read.qxmd.com/read/38390639/optical-spectroscopic-detection-of-schottky-barrier-height-at-a-two-dimensional-transition-metal-dichalcogenide-metal-interface
#7
JOURNAL ARTICLE
Du Chen, Surendra B Anantharaman, Jinyuan Wu, Diana Y Qiu, Deep Jariwala, Peijun Guo
Atomically thin two-dimensional transition-metal dichalcogenides (2D-TMDs) have emerged as semiconductors for next-generation nanoelectronics. As 2D-TMD-based devices typically utilize metals as the contacts, it is crucial to understand the properties of the 2D-TMD/metal interface, including the characteristics of the Schottky barriers formed at the semiconductor-metal junction. Conventional methods for investigating the Schottky barrier height (SBH) at these interfaces predominantly rely on contact-based electrical measurements with complex gating structures...
February 23, 2024: Nanoscale
https://read.qxmd.com/read/38389495/bio-inspired-carbon-electrodes-for-metal-ion-batteries
#8
REVIEW
Yihan Yang, Jiang Zhou, Apparao M Rao, Bingan Lu
Carbon has been widely used as an electrode material in commercial metal-ion batteries (MIBs) because of its desirable electrical, mechanical, and physical properties. Still, traditional carbon electrodes suffer from limited mechanical stability and electrochemical performance in MIBs. Drawing inspiration from biological species, the carbon allotropes, such as fullerenes, carbon nanotubes, and graphene, can be engineered into mechanically robust, highly conductive frameworks with enhanced ion storage and transport capabilities for MIBs...
February 23, 2024: Nanoscale
https://read.qxmd.com/read/38385907/low-platinum-loading-electrocatalyst-supported-on-a-carrier-derived-from-carbon-dots-doped-zif-67-for-the-orr-and-zinc-air-batteries
#9
JOURNAL ARTICLE
Lijing Yang, Junhong Ma, Yuemei Liu, Chaoyun Ma, Xue Yu, Zhaohui Chen
The development of economical and efficient platinum-based catalysts for the oxygen reduction reaction (ORR) is considered the most promising strategy for the widespread application of clean energy conversion devices. Herein, Co nanoparticles encapsulated in N-doped carbon carriers, CoCN(CDs- X ), were constructed by pyrolyzing carbon dots (CDs) doped ZIF-67 and further used to anchor Pt to prepare low Pt loading catalysts, PtCoCN(CDs- X ). The introduction of CDs not only improves the conductivity for efficient electron transfer, but also regulates the interaction between Pt and the CoCN(CDs- X ) support and alleviates the oxidation of Pt...
February 22, 2024: Nanoscale
https://read.qxmd.com/read/38385551/structural-and-optical-control-through-anion-and-cation-exchange-processes-for-sn-halide-perovskite-nanostructures
#10
JOURNAL ARTICLE
Kushagra Gahlot, Julius Meijer, Loredana Protesescu
Metal halide perovskite nanostructures, characterized by their ionic nature, present a compelling avenue for the tunability of dimensions and band gaps through facile compositional transformations involving both cationic and anionic exchange reactions. While post-synthetic ion-exchange processes have been extensively explored in Pb-halide perovskite nanocrystals, the inherent instability of Sn2+ has limited the exploration of such processes in Sn-halide perovskite nanostructures. In this study, we present a straightforward cation exchange process wherein 2D [R-NH3 ]2 SnX4 Ruddlesden-Popper (RP) nanostructures with n = 1 transition to 3D ASnX3 nanocrystals at room temperature with the addition of A-cation oleate...
February 22, 2024: Nanoscale
https://read.qxmd.com/read/38385242/surface-thermodynamics-of-yttrium-titanate-pyrochlore-nanomaterials
#11
JOURNAL ARTICLE
Margaret E Reece, Jiahong Li, Andrew C Strzelecki, Juan Wen, Qiang Zhang, Xiaofeng Guo
Nanocrystalline pyrochlore materials have been investigated for their enhanced radiation tolerance as ceramic nuclear waste hosts. In this work, we study the thermodynamic driving force of nano-scale materials for radiation resistance. The size dependent thermodynamic properties of a series of Y2 Ti2 O7 nanoparticles were investigated. Samples were synthesized by a sol-gel method and characterized by synchrotron X-ray diffraction, BET analysis, and thermogravimetric analysis. The surface and interface enthalpies of Y2 Ti2 O7 were determined by high temperature oxide melt drop solution calorimetry to be 4...
February 22, 2024: Nanoscale
https://read.qxmd.com/read/38381522/multivariate-regression-analysis-of-factors-regulating-the-formation-of-synthetic-aluminosilicate-nanoparticles
#12
JOURNAL ARTICLE
Faisal T Adams, McNeill Bauer, Clément Levard, F Marc Michel
Interest is growing in nanoparticles made of earth abundant materials, like alumino(silicate) minerals. Their applications are expanding to include catalysis, carbon sequestration reactions, and medical applications. It remains unclear, however, what factors control their formation and abundance during laboratory synthesis or on a larger industrial scale. This work investigates the complex system of physicochemical conditions that influence the formation of nanosized alumino(silicate) minerals. Samples were synthesized and analyzed by powder X-ray diffraction, in situ and ex situ small angle X-ray scattering, and transmission electron microscopy...
February 21, 2024: Nanoscale
https://read.qxmd.com/read/38380994/a-double-crack-structure-for-bionic-wearable-strain-sensors-with-ultra-high-sensitivity-and-a-wide-sensing-range
#13
JOURNAL ARTICLE
Di Zhu, Shengshun Duan, Jiachen Liu, Shanyan Diao, Jianlong Hong, Shengxin Xiang, Xiao Wei, Peng Xiao, Jun Xia, Wei Lei, Baoping Wang, Qiongfeng Shi, Jun Wu
Flexible strain sensors are crucial in fully monitoring human motion, and they should have a wide sensing range and ultra-high sensitivity. Herein, inspired by lyriform organs, a flexible strain sensor based on the double-crack structure is designed. An MXene layer and an Au layer with cracks are constructed on both sides of the insulated polydimethylsiloxane (PDMS) film, forming an equivalent parallel circuit that guarantees the integrity of the conductive path under a large strain. The rapid disconnection of the crack junctions causes a significant change in the resistance value...
February 21, 2024: Nanoscale
https://read.qxmd.com/read/38380646/kinetics-of-spontaneous-phase-transitions-from-w%C3%A3-stite-to-magnetite-in-superparamagnetic-core-shell-nanocubes-of-iron-oxides
#14
JOURNAL ARTICLE
Tereza Sojková, Roman Gröger, Jakub Poloprudský, Ivo Kuběna, Oldřich Schneeweiss, Martin Sojka, Zuzana Šiška, Jakub Pongrácz, Naděžda Pizúrová
Iron oxide nanoparticles with a wüstite structure have been prepared by thermal decomposition. In air, they undergo a spontaneous transition into a thermodynamically more stable magnetite structure that grows from the surface. The thickness of this magnetite shell increases with time, thereby producing a series of core-shell nanoparticles. We investigated the kinetics of this phase transition in 23 nm nanocubes using time-resolved XRD, from which the fractions of individual phases were determined by the Rietveld refinement...
February 21, 2024: Nanoscale
https://read.qxmd.com/read/38379522/potential-application-of-bismuth-oxyiodide-bioi-when-it-meets-light
#15
REVIEW
Zaichun Sun, Tahta Amrillah
Bismuth oxyiodide (BiOI) is a kind of typical two-dimensional (2D) material that has been increasingly developed alongside other 2D materials such as graphene, MXenes, and transition-metal dichalcogenide. However, its potential applications have not been widely whispered compared to those of other 2D materials. Using its distinctive properties, BiOI can be used for various applications, especially when it meets sunlight and other light-related electromagnetic waves. In this present review, we discuss the developments of BiOI and challenges in the applications for photodetector and light-assisted sensors, photovoltaic devices, optoelectronic logic devices, as well as photocatalysts...
February 21, 2024: Nanoscale
https://read.qxmd.com/read/38376949/correction-recent-advances-in-nano-fertilizers-synthesis-crop-yield-impact-and-economic-analysis
#16
Badr-Eddine Channab, Ayoub El Idrissi, Ayyoub Ammar, Othmane Dardari, Salah Eddine Marrane, Abdelouahed El Gharrak, Adil Akil, Younes Essemlali, Mohamed Zahouily
Correction for 'Recent advances in nano-fertilizers: synthesis, crop yield impact, and economic analysis' by Badr-Eddine Channab et al. , Nanoscale , 2024, https://doi.org/10.1039/d3nr05012b.
February 20, 2024: Nanoscale
https://read.qxmd.com/read/38376499/unravelling-the-atomistic-mechanisms-underpinning-the-morphological-evolution-of-al-alloyed-hematite
#17
JOURNAL ARTICLE
Jinxing Gu, Sasha Yang, Jefferson Zhe Liu, Lian Zhang
Hydrothermal synthesis based upon the use of Al3+ as the dopant and/or ethanol as the solvent is effective in promoting the growth of hematite into nanoplates rich in the (001) surface, which is highly active for a broad range of catalytic applications. However, the underpinning mechanism for the flattening of hematite crystals is still poorly comprehended. To close this knowledge gap, in this work, we have attempted intensive computational modelling to construct a binary phase diagram for Fe2 O3 -Al2 O3 under typical hydrothermal conditions, as well as to quantify the surface energy of hematite crystal upon coverage with Al3+ and ethanol molecules...
February 20, 2024: Nanoscale
https://read.qxmd.com/read/38376462/visible-light-induced-hole-transfer-in-single-nanoplate-cu-1-81-s-cds-heterostructures
#18
JOURNAL ARTICLE
Chang Wang, Zhaozhe Chen, Si Xiao, Jun He
The separation and transfer of photogenerated carriers in semiconducting materials are essential processes that determine the efficiency of optoelectronic devices and photocatalysts, and transient absorption spectroscopy provides a powerful support for exploring the diffusion and recombination of photogenerated electrons and holes. Herein, high-quality Cu1.81 S nanoplates were synthesized by a hot injection method, and were used as starting templates for the preparation of Cu1.81 S-CdS heterojunctions and CdS nanoplates by cation exchange...
February 20, 2024: Nanoscale
https://read.qxmd.com/read/38376253/coumarin-embedded-5-helicene-derivatives-synthesis-x-ray-analysis-and-photoconducting-properties
#19
JOURNAL ARTICLE
Hui Yang, Guofeng Chen, Ran Zhang, Yanjie Zhu, Jinchong Xiao
Two novel coumarin-embedded π-extended [5]helicene derivatives (3a and 6a) have been strategically synthesized and characterized, and the structure of 3a was determined via single crystal X-ray analysis. Both of them exhibit green fluorescence in dichloromethane. In addition, molecule 3a can aggregate to form a large quantity of nanowires through the re-precipitation method. More importantly, the photoelectric conversion properties of 3a nanowire-C60 based films are much better than those of the thin film of bulk 3a-C60 , indicating that the ordered nanostructures are a crucial factor for enhancing device performance...
February 20, 2024: Nanoscale
https://read.qxmd.com/read/38376225/polyoxometalate-nanocluster-infused-triple-ipn-hydrogels-for-excellent-microplastic-removal-from-contaminated-water-detection-photodegradation-and-upcycling
#20
JOURNAL ARTICLE
Soumi Dutta, Ashok Misra, Suryasarathi Bose
Microplastic (MP) pollution pervades global ecosystems, originating from improper plastic disposal and fragmentation due to factors like hydrolysis and biodegradation. These minute particles, less than 5 mm in size, have become omnipresent, impacting terrestrial, freshwater, and marine environments worldwide. Their ubiquity poses severe threats to marine life by causing physical harm and potentially transferring toxins through the food chain. Addressing this environmental crisis necessitates a sustainable strategy...
February 20, 2024: Nanoscale
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