Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Wang Lifeng,Wang Haiyan,Wu Chunxiao,Bai Jiaxin,He Tiancheng,Li Yan,Cheng Huhu,Qu Liangti
Supercapacitor is highly demanded in emerging portable electronics, however, which faces frequent charging and inevitable rapid self-discharging of huge inconvenient. Here, we present a flexible moisture-powered supercapacitor (mp-SC) that capable of spontaneously moisture-enabled self-charging and persistently voltage stabilizing. Based on the synergy effect of moisture-induced ions diffusion of inner polyelectrolyte-based moist-electric generator and charges storage ability of inner graphene electrochemical capacitor, this mp-SC demonstrates the self-charged high areal capacitance of 138.3 mF cm −2 and ~96.6% voltage maintenance for 120 h. In addition, a large-scale flexible device of 72 mp-SC units connected in series achieves a self-charged 60 V voltage in air, efficiently powering various commercial electronics in practical applications. This work will provide insight into the design self-powered and ultra-long term stable supercapacitors and other energy storage devices.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF FLUORESCENCE
·
2024
·
IF 2.6
Chen De Xing,Long Yun Fei
The copper nanoclusters (CuNCs) have been garnered significant attention owing to their low cost raw materials, outstanding optical properties, environmental friendliness and good biocompatibility. In this study, copper nanoclusters stabilized by Acid Chromic Blue K (ACBK-CuNCs) were synthesized. The optimal excitation wavelength of the synthesized ACBK-CuNCs is 344 nm and the optimal emission wavelength is 460 nm. Its fluorescence intensity can be retained for more than two weeks, which indicated that the antioxidant capacity of the synthesized ACBK-CuNCs is strong. It was noted that the fluorescence intensities of the synthesized ACBK-CuNCs significantly increased with the decrease of pH. There are good linear correlation between the fluorescence intensity ratio of the system to the fluorescence intensity of the original solution (F/F 0 ) and the pH of the medium. Based on this finding, a method for fluorescence analysis to detect the pH of solution was developed. Additionally, it was discovered that the fluorescence intensity of CuNCs could be quenched efficiently by Berberine hydrochloride (BH), and there is a favorable linear relationship between the change value of fluorescence intensity of CuNCs ((F 0 - F) / F 0 ) and the concentration of BH. This gave rise to the establishment of a fluorescence analysis method for determining the concentration of BH. Simultaneously, visual quantitative detection for BH and pH was achieved based on smartphones and colorimetric analysis software using ACBK-CuNCs as the fluorescent probes. Graphical
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2024
·Vol. 17
·期 1
·1-18
·
IF 31.6
Xiong Jinhua,Zhao Xu,Liu Zonglin,Chen He,Yan Qian,Lian Huanxin,Chen Yunxiang,Peng Qingyu,He Xiaodong
The large-scale, high-strength, super-tough, and multifunctional nacre-like heterocyclic aramid (HA)/MXene@polypyrrole (PPy) (HMP) nanocomposite papers were fabricated using the in-situ assembly of PPy onto the HA/MXene hydrogel template.
The "brick-and-mortar" layered structure and abundant hydrogen-bonding interactions among MXene, PPy, and HA respond cooperatively to external stress and effectively increase the mechanical properties of HMP nanocomposite papers.
The templating effect from HA/MXene was utilized to guide the assembly of conducting polymers, leading to high electrical conductivity and outstanding electromagnetic interference shielding performance.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Microsystems & Nanoengineering
·
2025
·Vol. 11
·期 1
·1-10
·
IF 9.9
Zhou Yexi,Zhao Yu,Zhao Dazhe,Guan Xiao,Zhang Kaijun,Pi Yucong,Zhong Junwen
Achieving autonomously responding to external stimuli and providing real-time feedback on their motion state are key challenges in soft robotics. Herein, we propose an asymmetric three-layer hydrogel muscle with integrated sensing and actuating performances. The actuating layer, made of p(NIPAm-HEMA), features an open pore structure, enabling it to achieve 58% volume shrinkage in just 8 s. The customizable heater allows for efficient programmable deformation of the actuating layer. A strain-responsive hydrogel layer, with a linear response of up to 50% strain, is designed to sense the deformation process. Leveraging these actuating and sensing capabilities, we develop an integrated hydrogel muscle that can recognize lifted objects with various weights or grasped objects of different sizes. Furthermore, we demonstrate a self-crawling robot to showcase the application potential of the hydrogel muscle for soft robots working in aquatic environments. This robot, featuring a modular distributed sensing and actuating layer, can autonomously move forward under closed-loop control based on self-detected resistance signals. The strategy of modular distributed stimuli-responsive sensing and actuating materials offers unprecedented capabilities for creating smart and multifunctional soft robotics.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food and Bioprocess Technology
·
2024
·
IF 5.3
Shi Yingkun,Niu Zijun,Chen Sichun,Wang Songlei,Yang Lingfan,Wang Yihua
Abstract Electrochemical analysis is a powerful analytical technique with extensive applications in the food industry, offers high advantages due to its high sensitivity, low operating cost, and high-speed analysis. In this study, a novel nanoenzymes high-catalytic platform based on a conductive polymer (MXene) was established for the detection of Guanosine 5′-monophosphate (GMP). The MXene/Fe 3 O 4 /β-CD nanocomposites were synthesized using a self-assembly method, exhibiting significant catalytic activity and a large specific surface area. The surface morphology, functional groups and chemical bonds of MXene/Fe 3 O 4 /β-CD were analyzed via scanning electron microscopy (SEM), Fourier Transform Infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS). Electrochemical experiments indicated a significant amplification of GMP electrical signals on the nanoenzymatic platform. The oxidation of GMP to 8-oxo-GMP involved the transfer of two electrons (−2e − ) and two protons (-2H + ) at the MXene/Fe 3 O 4 /β-CD modified glassy carbon electrode. Under optimized conditions, this electrochemical nanoenzymatic platform achieved a low detection limit of 0.0126 μM for GMP, with linear ranges from 0.05 μM to 600 μM. The sensor demonstrated excellent selectivity and stability and was successfully applied for GMP determination in chicken, fish, pork and beef samples. This study provided a new pathway for the development of sensors for GMP detection. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Liu Cong,Mei Bingbao,Shi Zhaoping,Jiang Zheng,Ge Junjie,Xing Wei,Song Ping,Xu Weilin
Heterogeneous nano-electrocatalysts doped with nonmetal atoms have been studied extensively based on the so-called dopant-based active sites, while little attention has been paid to the stability of these dopants under working conditions. In this work, we reveal significantly, when the redox working potential is too low negatively or too high positively, the active sites based on these dopants actually tend to collapse. It means that some previously observed “remarkable catalytic performance” actually originated from some unknown active sites formed in situ. Take the Bi-F for the CO 2 RR as an example, results show that the observed remarkable activity and stability were not directly from F-based active sites, but the defective Bi sites formed in situ after the dopant leaching. Such a fact is unveiled from several heteroatom-doped nanocatalysts for four typical reactions (CO 2 RR, HER, ORR, and OER). This work provides insight into the role of dopants in electrocatalysis.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
·
2024
·
IF 2.2
Sun Yining,Sun Hui,Yu Bin,Yang Xiaodong,Xu Tao
Polypropylene melt-blown nonwoven material (PP MB) was first modified by polydopamine to improve the surface hydrophilicity. Then cobalt hydroxycarbonate Co(CO 3 ) 0.5 (OH)∙0.11H 2 O(CCO) was synthesized on the surface of the modified PP MB(M-PP MB) via a simple in suit hydrothermal method, and CCO@M-PP MB was obtained. The results showed that when the ratio of Co(NO 3 ) 2 ·6H 2 O to CO(NH 2 ) 2 was 1:5 and the Co(NO 3 ) 2 ·6H 2 O concentration was 0.03 mol/L, CCO with a sea urchin-like morphology appeared on the surface of M-PP MB. Compared with PP MB, the water contact angle (WCA) of CCO@M-PP MB reduced to 0°. When n-hexane was used as the oil phase, the underwater oil contact angle (UWOCA) of CCO@M-PP MB could be over 140.63°. CCO@M-PP MB could efficiently separate various oil–water mixtures, the oil included n-hexane, petroleum ether, carbon tetrachloride, dichloromethane, peanut oil, and olive oil. When n-hexane was used as the oil phase, the oil–water separation efficiency of CCO@M-PP MB was over 98.76%. Throughout 50 cycles, the oil–water separation efficiency of CCO@M-PP MB was never lower than 97.02%.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-17
·
IF 15.7
Dai Hao,Han Ali,Wang Xijun,Zhu Peng,Wang Dingsheng,Wang Yuguang
Noninvasive phototherapy with functional preservation is considered to be a promising cancer therapeutic method. However, the clinical application of tumor phototherapy is severely restrained by the lack of appropriate multimodal phototherapy agents exhibiting an ideal tissue penetration depth to maximize the antitumor efficiency as well as to maintain important tissue functions. Herein, an innovative near-infrared ray (NIR)-triggered photodynamic-photocatalytic-photothermal therapy (PDT-PCT-PTT) agent based on an atomically dispersed cobalt single-atom enzyme (Co-SAE) anchored on hollow N-doped carbon sphere (HNCS) has been strategically developed. Reactive oxygen species (ROS) are highly activated and amplified through both the photogenerated electrons and the photothermal conversion induced by NIR irradiation, as systematically demonstrated by the experimental and density functional theory (DFT) calculation results. Mild hyperthermia is eventually achieved through apoptosis and ferroptosis caused by ROS, significantly boosting the interaction of ROS dynamic effects and thermodynamic effects in the tumor microenvironment (TME). More importantly, Co-SAEs/HNCS not only causes multimodal damage through limited TME products but also preserves important organ functions by the induction of mild local hyperthermia. This work expands the biomedical application field of SAEs and presents an innovative all-in-one, multimodal concept for the noninvasive treatment of head and neck cancer.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science China-Materials
·
2024
·Vol. 67
·期 7
·2142-2152
·
IF 6.8
Li Yaying,Yang Huijuan,Li Jili,Li Yefei,Ren Wei,Wen Jin,Xiao Qi,Xu Jingsan
Heterojunction photocatalysis has been widely studied as a means of efficiently converting solar energy to chemicals. However, the major challenge in developing high-performing heterojunction photocatalytic systems lies in achieving efficient transfer of electrons between the components. Herein, a novel S-scheme heterojunction photocatalyst was developed by combining BaTi 2 O5 nanorods with g-C 3 N 4 lamellae. The preferential deposition of Pt nanoparticles as cocatalyst via the one-step impregnation-reduction method on g-C 3 N 4 nanosheets with enhanced interfacial contact and strong electronic interaction has been proved essential for the photocatalytic performance. The developed Pti mp /20BaTi 2 O 5 /g-C 3 N 4 photocatalyst delivers the optimal hydrogen production rate of 2587 µmol g −1 h −1 with high stability after cycles. Photoelectrochemical analysis and theoretical calculation suggest that the formation of BaTi 2 O 5 /g-C 3 N 4 heterojunction results in the staggered band alignment and improved charge carrier dynamics. This work highlights the importance and feasibility of promoting photocatalysis by a new S-scheme heterojunction with viable cocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Ocean University of China
·
2024
·Vol. 23
·期 5
·1275-1286
·
IF 1.4
Yang Fan,Zhang Yan,Wu Guanyu,He Zhen,Yang Guipeng
Methyl halides are crucial trace greenhouse gases in the atmosphere, playing a significant role in global climate change and the atmospheric environment. This study investigated the photochemical production of methyl halides in an artificial seawater system using guaiacol as a precursor through laboratory simulation experiments. The influences of various environmental factors, including illumination time, radiation wavebands, illumination intensity, concentrations of guaiacol and halide ions (X − ), Fe 3+ , salinity, dissolved oxygen (DO), and pH value on the photochemical production of methyl halides were examined. We demonstrated that increased illumination intensity and duration promote the photochemical production of methyl halides, with a notable enhancement under UV-B radiation. Guaiacol and halide ions were identified as key precursors, and their high concentrations facilitated the formation of methyl halides. Additionally, different types of halide ions exhibited a competitive relationship in producing methyl halides. The study found that an increase in pH inhibited the photochemical formation of CH 3 I due to the reaction between OH − and ·CH 3 . Dissolved oxygen was found to inhibit the photochemical formation of CH 3 I while promoting the formation of CH 3 Cl. Conversely, an appropriate concentration of Fe 3+ enhanced the photochemical production of methyl halides. Field observations indicated a high photochemical production of methyl halides in the natural waters near Qingdao’s coastal area, likely due to the high concentration of dissolved organic matter (DOM), which supports photochemical reactions. Furthermore, the photochemical production of methyl halides in natural seawater was significantly higher than in dark conditions, underscoring the importance of illumination in promoting these photochemical processes in seawater.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Coatings Technology and Research
·
2024
·
IF 2.3
Cui Congcong,Chen Di,Mao Linhan,Xiao Yanwen,Huang Qiaoyu,Chen Zhaoxia,Qi Xiaoyun,Zhang Yuhong
The frequent occurrence of oil spills in recent years has led to serious contamination of water resources, and materials with superhydrophobic surface properties have attracted much attention for crude oil recovery and water contamination remediation. However, the fragile robustness of superhydrophobic materials greatly hinders their practical applications. Herein, we prepared the robust, photocatalytic superhydrophobic material of SH-ZnO-PDMS@fabric by a simple two-step immersion method. Zinc oxide nanoparticles (ZnO NPs) provided the rough surface structure, and fluorine-free dodecyltrimethoxysilane (DTMS) provided the low surface energy. Polydimethylsiloxane (PDMS) was introduced as a binder to strengthen the force between the nanoparticles and the fabric. The cotton fabric showed excellent superhydrophobicity with a water contact angle (WCA) range of 146.9–156.6°. The methylene blue (MB) in water was basically degraded after 12 h of exposure to UV lamp, manifesting that the cotton fabric had excellent photocatalytic property. The cotton fabric also showed excellent self-cleaning and antifouling properties. Importantly, SH-ZnO-PDMS@fabric maintained superhydrophobic properties after mechanical abrasion, ultrasonic washing, UV irradiation, and acid/alkali immersion. The prepared superhydrophobic materials can be repeatedly used to separate various oil–water mixtures due to their superhydrophobic and recyclable properties. This versatile, efficient, and simple strategy has good application prospects in water pollution remediation and oily wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2024
·Vol. 149
·期 23
·14449-14461
·
IF 3
Ma Qianyu,Gao Wei
Phase change materials (PCMs) exhibit a promising application as a heat storage medium in battery thermal management. However, the flammability, low thermal conductivity, and leakage problems of organic PCMs constrain the development. In this study, a novel strategy based on inorganic hydrated salt with natural nonflammability was proposed. Sodium acetate trihydrate and disodium hydrogen phosphate dodecahydrate composite materials (SAT-DSP) were synthesized without affecting the properties. The prepared SD@SiO 2 with sodium silicate as the precursor, while SAT-DSP as the core material, possessed the dual heat storage performance of phase transition and thermochemical heat storage. The SiO 2 shell with a dense surface successfully realized the encapsulation of SAT-DSP, and the combined effect of heterogeneous nucleation and mesoporous confinement effectively inhibited the phase separation of phase change materials. The optimal ratio of SD@SiO 2 was determined through a comprehensive analysis of morphology, thermal stability, and thermal storage properties. The heat storage density was up to 509.18 J g −1 with a phase transition temperature of 78.78 °C. It improved the chemical instability and leakage of hydrated salts and centralized the dehydration process of SAT-DSP to achieve rapid response. Even after continuous heating on a 120 °C heating platform for 30 min, the surface temperature of SD@SiO 2 was maintained within a safe range (< 65 °C). This inorganic phase change material exhibited considerable potential for application in battery thermal runaway protection.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）