ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Fei Hu,Kaihui Liu,Yunyun Zhang,Shuhao Zhao,Tianyi Zhang,Cuiping Yao,Xing Lv,Jing Wang,Xiaolong Liu,Niancai Peng
Infectious diseases, especially respiratory infections, have been significant threats to human health. Therefore, it is essential to develop rapid, portable, and highly sensitive diagnostic methods for their control. Herein, a short-time preamplified, one-pot clustered regularly interspaced short palindromic repeats (CRISPR) nucleic acid detection method (SPOC) is developed by combining the rapid recombinase polymerase amplification (RPA) with CRISPR-Cas12a to reduce the mutual interference and achieve facile and rapid molecular diagnosis. SPOC can reduce the detection time and stably detect up to 1 copy/μL of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA without affecting the detection sensitivity. A highly sensitive one-pot assay integrated with reverse transcription RPA is achieved by wrapping paraffin with a specific melting point on the lyophilized CRISPR reagent surface. A self-heating pack is designed based on thermodynamic principles to melt the paraffin and release CRISPR reagents, enabling low-cost and time-saving detection. Notably, the designed system, coupled with RNA extraction-free technology, can achieve “sample-in-answer-out” detection of the SARS-CoV-2 Orf1ab gene within 22 min using smartphone imaging. The developed assay is validated on 12 clinical samples, and the results 100% correlate with real-time polymerase chain reaction. SPOC is time-saving, is easy to operate, and can eliminate centrifugal and complex hardware devices, satisfying the demand for point-of-care diagnostics in resource-constrained settings.
研究领域:
分子诊断学
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传染病学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2024
·
IF 6.7
Lunhong Ai,Yao Tian,Tanyang Xiao,Jiayi Zhang,Chenghui Zhang,Jing Jiang
Renewable electricity driven water splitting is a promising way for clean hydrogen production, but the practical application of this technology is greatly impeded by the sluggish kinetics of the anodic oxygen evolution reaction (OER). Considering a typical endothermic nature of water splitting that is highly sensitive to temperature, herein, we introduce a simple, convenient and non-contact in situ self-heating mode to combine with OER-active electrocatalysts, enabling the reduced reaction energy barrier and the enhanced electrocatalytic performances. The RuNiFeO x /FeNi 3 heterostructures are designed and grown on iron foam (IF) substrate using a facile redox corrosion strategy followed by the controllable heat treatment. The RuNiFeO x /FeNi 3 heterostructures with the narrow bandgap characteristic can generate a distinctive photothermal effect. The local temperature of electrode surface can immediately increase under NIR light irradiation, offering an impressive self-heating platform to promote OER catalysis. The RuNiFeO x /FeNi 3 /IF significantly reduces the OER overpotential by the combination with photothermal effect. Meanwhile, the RuNiFeO x /FeNi 3 /IF demonstrates the stable and reproducible photothermal-electrocatalytic behaviors. This research offers a new vision for the rational design of advanced electrocatalytic systems coupled with photothermal effect to lower activation energy barriers and promote electrocatalysis of water splitting.
研究领域:
材料科学
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能源化学
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光电催化
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Sheng Zhang,Junyin Cheng,Bo Song,Shun Linghu,Yijun Tang,Qing Li,Lei Chen
Winter sports have gained popularity in recent years. These sports and activities, however, come with some health concerns, particularly in harsh and extremely cold conditions. A self-heating, flexible, and smart conductive material that can monitor body health in extreme conditions would thus be highly desirable. Inspired by the structure of a spider-web, a flexible pressure sensor was developed by depositing a CNTs/CuS composite coating on a fabric surface with a cellulose-entangled structure constructed by hydroxypropyl methyl cellulose (HPMC). The obtained flexible pressure sensor demonstrated stable physiological signal detection and temperature insensitivity during photothermal heating, attributed to the water-retention capacity of HPMC. In addition, it exhibited excellent electrical conductivity (resistance of 10 Ω cm−1), deicing (181s), sterilization (≈99.99%), UV resistance (UPF ≈ 13 926), environmental adaptability (−78 °C to 50 °C) and high sensitivity (13.25 ± 0.123 kPa−1). This coating process can be applied to various garments, offering new possibilities for designing and preparing wearable multifunctional sensors.
研究领域:
材料科学
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生物医学工程
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智能纺织品
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Jiabo Tang,Xinghong Liu,Xiaolin Chang,Xiang Ji,Wei Zhou
Geopolymers are an economical, durable and environmentally friendly building material that achieves ultimate strength superior to concrete within hours and can withstand extreme high temperatures without degradation, but they lack elasticity and have poor flexural strength . To tackle these challenges, this paper presents a novel nanotechnological and affordable method to produce an elastic geopolymer that can be used as a construction material. Specifically, we report a simple and straightforward strategy that combines electrospinning and the sol-gel process to construct geopolymer nanofibers with superelasticity , extreme durability, and fire resistance. In order to improve the safety level of building construction sites that experience extreme conditions, such as freeze-thaw deterioration, the geopolymer nanofibers can be further functionalized by incorporating various functional components. In this study, Fe 3 O 4 nanoparticles (NPs) adsorbed by an electric double layer structure were dispersed in a geopolymer sol (SAPOs). Elastic geopolymer nanofibers embedded with Fe 3 O 4 nanoparticles were then prepared (Fe 3 O 4 /SAPOs) by an electrospinning method . Nanofibers constructed by such a compound method could have superparamagnetic behaviors and stable chemical properties. When Fe 3 O 4 /SAPOs are exposed to an alternating magnetic field , eddy currents are generated that cause the geopolymer nanofibers to heat up. This self-heating behavior is a powerful feature that enhances the freeze-thaw resistance of building materials at high altitudes. The nanotechnological route of this study could provide novel insights into the development of advanced construction materials.
研究领域:
材料科学
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纳米技术
✓ 已验证
DOI
高影响因子
Russian Journal of Physical Chemistry A
·
2025
·Vol. 99
·期 2
·327-337
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IF 0.8
Liping Zhao,Zhao Ye,Zhao Lihe,Du Juan,Deng Xia,Wu Xueyan,Subinuer,Liu Gang,Yao Cen,Shen Lu,Xie Haiming
An internal resistance heating method was proposed to control the operating temperature of Li-ion batteries to address rapid performance degradation under low temperature conditions. Main research content: (a) Preparation and process optimization of PTC (positive temperature coefficient) effects materials: Using micrometer nickel powder as the conductive material and polypropylene/polyvinylidene fluoride (PP/PVDF) as the polymer matrix. The polymer matrix was mixed with the conductive material using high-temperature melting method. The PTC materials with a transition temperature below 40°C were prepared through controlling the preparation process repeatedly and meticulously, and the optimal preparation process was determined. (b) Performance testing and analysis of PTC materials: The thermal analysis, volume change analysis, structure and micro-structure analysis were conducted through resistivity temperature curve, tensile performance, SEM and thermal expansion testing, respectively. The influence of conductive material content, heat treatment temperature, heat treatment time on the performance of PTC materials was systematically studied. (c) “Self heating Battery” assembly and performance study: A self heating Li-ion battery was assembled and its electrochemical performance was tested systematically. The results showed that the low-temperature discharge performance of the battery was significantly improved. This work can help improve the low-temperature performance of Li-ion batteries and expand its application areas.
研究领域:
材料科学
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电化学
·
能源技术
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Chuanshuai Dong,Weiquan Lin,Zipai Li,Lei Chen,Zhixian Tang,Fenglian Lu,Ronghui Qi,Lin Lu,Lizhi Zhang
Thermally driven membrane distillation (TDMD) has emerged as a promising seawater desalination technology to address the freshwater shortage and energy crisis. However, the conventional “bulk-heating” technologies results in serious temperature polarization phenomenon, hindering efficient utilization of the energy. Here, an innovative hydroxylated CNTs-engineered polyvinylidene fluoride (H-CNT@PVDF) membrane is proposed which imparts an efficient, localized photo-/electro-thermal self-heating effect. To prevent the heat loss from the self-heating layer to bulk water, a transparent silica aerogel microspheres (SAM) layer is deposited on the H-CNT layer, achieving excellent self-insulating effect. The innovative SAM@H-CNT@PVDF Janus membrane achieves a 486% increase in MD flux compared with the conventional membrane. Although SAM layer only account for 3.8% of the membrane, the thermal resistance increases, unexpectedly, by more than 600%, which allows most of the heat to be concentrated at the H-CNT layer and used for seawater evaporation. The overall energy-to-water efficiency reach 94.5%, outperforming state-of-the-art MD devices. Additionally, the SAM layer demonstrates excellent anti-electrooxidation effect with the current degradation decreasing from 75.6% to 21.1%, ensuring long-term working for the membrane. The membrane represents a significant advancement in MD technology and holds substantial promise for ultra-low energy seawater desalination, offering a promising solution to water-energy nexus.
研究领域:
材料科学
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环境工程
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
THERMOCHIMICA ACTA
·
2024
·
IF 3.1
Desheng Chen,Ke Liu,Zixin Ye,Gao Zhang,Jinxin Xu,Dongfang Hu,Jiong Ding
The accelerating rate calorimeter is a commonly used tool for evaluating thermal hazards. Due to the thermal inertia, the heat dissipation between the reaction system and the furnace, the pure adiabatic condition cannot be achieved. This leads to inaccurate thermodynamic and kinetic results. To systematically study and correct this heat dissipation, numerical simulations and experiments were carried out to investigate the main heat dissipation path and the factors. The results show that convection is the main heat dissipation pathway. The dynamic characteristics of the thermocouple and sidewall have different effects on reactions with different self-heating rates. In addition, a heat dissipation correction method based on the heat transfer model is proposed and validated by simulations and experiments. The simulation and experimental results both show the effectiveness of this correction method. These mean it has a certain significance for the improvement of the accelerating rate calorimeter experimental data processes.
研究领域:
化学工程
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热力学
·
安全科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Shi Chen,Libin Wang,Xianluo Hu
Electrode materials are the key to electrochemical energy storage devices like supercapacitors. However, current materials can hardly meet the charge-storage capacity and/or operability requirements of practical scenarios in harsh low-temperature conditions. Here we report the advancement in photothermal-assisted supercapacitors operable at −40 °C using an electrochemically active and photothermal electrode material of commercially available TiN nanocrystals. Bifunctional TiN shows broad light absorption (>98%) in the whole solar spectrum and high photothermal conversion efficiency (62.5%). Even in an open atmospheric environment, the photochemical effect boosts the device with a considerable temperature rise from −36.6 °C to −10.8 °C under 1 solar illumination. Meanwhile, the as-fabricated device exhibits highly stable and reversible charge-storage capability. Its capacitance is enhanced by 38.0% at 5 mV s −1 at −40 °C, achieving 70.9% of the capacitance at 25 °C. The energy density is improved by 81.1% at 140 mW cm −2 at −40 °C, reaching 59.3% of the capacitance at 25 °C. The route for preparing TiN inks and fabricating screen-printed devices is simple and cheap, which is suitable for industrial mass production. The self-heating integration approach provides a promising strategy for designing new functionalized energy-storage devices with low temperature resistant features.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Peng Du,Yixiao Zhang,Zhen Li,Xian He,Zhichuan Zheng,Xinyu Xie,Yang Qin,Ru Zhang,Ming Lei,Kai Huang
The fabrication processes of self-supported OER electrode with enhanced flexibility and universality hold great significance for meeting the practical requirements on high throughput and compatibility in industrial scenarios. The electro-thermal conversion under non-stationary equilibrium conditions is expected to achieve surface composition and morphological modulation of metallic nanostructured catalysts. Herein, a programmable self-heating strategy is reported to fabricate carbon-based ultrafine amorphous RuMn-oxide nanoclusters supported on nickel foam substrate, in which rapid surface conduction and non-equilibrium thermal treatment facilitated efficient chemical immobilization and oxidation . The obtained RuMn/XC-30W sample displays a superior electrocatalytic performance toward oxygen evolution, reaching current densities of 10 and 100 mA cm −2 at an extraordinarily low overpotential of 194 and 270 mV in 1 M KOH, along with a small Tafel slope of 67.17 mV dec −1 . The long-term stability could also be certified by the minimal activity degradation under 24 h of operation. The excellent electrocatalytic performance are attributed to the strong electronic interactions and increased exposure of electrochemically active sites generated by rapid self-heating thermal process. This strategy presents a novel avenue for the design of self-supported electrodes in water electrocatalysis and various sustainable energy applications.
研究领域:
材料科学
·
电化学
·
能源技术
✓ 已验证
DOI
高影响因子
CARBON
·
2013
·
IF 5.868
Hetao Chu,Zhichun Zhang,Yanju Liu,Jinsong Leng
A meso/macropore carbon nanotube paper (CNP) and a self-heating fiber reinforced polymer composite of CNP/glassfiber/epoxy (CGE) based on the meso/macropore CNP were fabricated in this article. The pore diameters mainly distribute from 30 to 90 nm characterized using nitrogen adsorption isotherms at 77 K. The electric conductivities of the CNP and CGE composite are 77.8 and 64.9 S cm −1 . Electric heating performance of CGE was investigated at different heat flux densities , wind speed and ambient temperature. A uniform temperature distributed was observed on the surface of CGE detected by an infrared temperature camera. The electric heating performance was verified by deicing a certain amount of ice at different heat flux densities under two kinds of ambient conditions: −22 °C without wind and −22 °C with 14 m/s of the wind speed. The deicing time under the two conditions were less than 220 and 450 s, respectively. The feasibility of the deicing performance was demonstrated through a series of experiments and the results indicate this material is a promising candidate as an electric heating material for deicing.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sensors
·
2023
·
IF 8.9
Meng Li,Chanunthorn Chananonnawathorn,Ning Pan,Saksorn Limwichean,Zanhong Deng,Mati Horprathum,Junqing Chang,Shimao Wang,Hideki Nakajima,Annop Klamchuen,Liang Li,Gang Meng
Though considerable progress has been achieved on gas molecule recognition by electronic nose (e-nose) comprised of nonselective (metal oxide) semiconductor chemiresistors, extracting adequate molecular features within short time (<1 s) remains a big obstacle, which hinders the emerging e-nose applications in lethal or explosive gas warning. Herein, by virtue of the ultrafast (∼20 μs) thermal relaxation time of self-heated WO3-based chemiresistors fabricated via oblique angle deposition, instead of external heating, self-heating temperature modulation has been proposed to generate sufficient electrical response features. Accurate discrimination of 12 gases (including 3 xylene isomers with the same function group and molecular weight) has been readily achieved within 0.5–1 s, which is one order faster than the state-of-the-art e-noses. A smart wireless e-nose, capable of instantaneously discriminating target gas in ambient air background, has been developed, paving the way for the practical applications of e-nose in the area of homeland security and public health.
研究领域:
材料科学
·
传感技术
·
公共安全
✓ 已验证
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2020
·
IF 7.216
Libin Wang,Ting Shu,Songtao Guo,Shi Chen,Yingjun Jiang,Xianluo Hu
ABSTRACT Owing to sluggish ionic mobility at low temperatures, supercapacitors , as well as other energy-storage devices, always suffer from severe capacity decay and even failure under extreme low-temperature circumstances. Solar-thermal-enabled self-heating promises an attractive approach to overcome this issue. Here, we report a unique H-bonding charge-transfer complex with a high photothermal conversion efficiency of 79.5% at 405 nm based on chloranilic acid and albendazole . Integrated with a microsupercapacitor, the chloranilic acid-albendazole complex (CAC) film prompts an apparent temperature increase of 22.7 °C under 1 sun illumination at −32.6 °C, effectively elevating the working temperature of devices. As a result, the rate capability of the microsupercapacitor has been significantly improved with a 17-fold increase in capacitance at a current density of 60 μA cm −2 , leading to outstanding low-temperature performances. Importantly, the integrated device is capable of working at a low temperature of −30 °C in the open air, which demonstrates the potential of CAC in practical applications for low-temperature ultracapacitive energy-storage devices.
研究领域:
材料科学
·
能源存储技术
·
光电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）