CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zongjie Li,Yihan Lu,Xiaoyu Wang,Tengfei Li,Yongyao Xiao,Yang Li,Weimin Kang
Triboelectric nanogenerators (TENGs) efficiently convert low-frequency mechanical energy into electrical energy and are extensively utilized in wearable electronic products. However, when exposed to a wide temperature range environment (10–65 °C) or humid environments, TENGs are confronted with problems such as the temperature drift effect and charge dissipation, which not only compromise human thermal comfort but also restrict their practical application. For this purpose, a multifunctional TENG was designed in this study, featuring both bidirectional thermal regulation and hydrophobic protection. The device employs a thermoplastic polyurethane/tetrabutylammonium hexafluorophosphate (TPU/TBAHP) tree-like nanofiber membrane (TLNM) loaded with polypyrrole (PPy) (PPy@TPU/TBAHP TLNM) as the positive electrodes to enable efficient photothermal conversion. The fluorosilane-modified ZnO nanorods-modified polyvinylidene fluoride (PVDF)/TBAHP TLNM (P-ZnO@PVDF/TBAHP TLNM) were utilized as the negative electrodes to facilitate passive radiative cooling. This TENG can switch flexibly between thermal regulation modes (cooling and heating) in response to ambient temperature, suppressing temperature drift and maintaining human thermal comfort. Meanwhile, it has excellent hydrophobicity (contact angle of 139.2°), which helps to alleviate the problem of charge dissipation in a humid environment. The optimized TENG achieved an output voltage of 98 V and a current of 18.7 μA. Moreover, this TENG demonstrates excellent durability and reliable human motion monitoring capabilities, thus offering a new solution for wearable electronics.
研究领域:
纳米技术
·
能量收集
·
材料科学
·
可穿戴电子设备
·
传感器
·
环境适应
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Ting Lin,Lei Hu,Jie Chen,Qinghui Chen,Renhui Qiu,Jie Pang,Shuyi Wu
Photothermal therapy based on photothermal conversion has received increasing attention due to its non-invasiveness and low side effects. In this study, a 3D-printed biomass photothermal therapy device was prepared for accurate control of photothermal conversion and molecular release. The prepared black phosphorus nanosheets (BPNSs) showed excellent photothermal performance and antibacterial activity. A temperature-regulated sol-gel reversible system was prepared with konjac glucomannan (KGM), tara gum (TG), BPNSs, and manganese dioxide (MnO 2 ) nanoparticles. The sol-gel transition was attributed to the change of interactions of hydrogen bond, and molecular entanglement. Photothermal conversion films with accurate multi-layer and array structures were prepared by 3D printing using the biomass sol-gel conversion system. The photothermal conversion efficiency was regulated by the concentration of BPNSs and MnO 2 . Under infrared radiation (808 nm, 1 W/cm 2 ) for 5 min, the temperatures of hydrogel films with a MnO 2 concentration of 0, 0.5, and 1 % were raised from 25 to 29.3, 61.8, and 90.8 °C, respectively. The accurate temperature distribution induced the controlled release of small active molecules such as epigallocatechin gallate (EGCG) loaded in hydrogels, which was resulted from the changes in the hydrogel structure and the decrease in adsorption energy between polysaccharide and EGCG at high temperatures. This study provides a biomass 3D-printed multifunctional photothermal therapy device and more understanding of the molecular release during photothermal conversion.
研究领域:
生物医学工程
·
材料科学
·
纳米技术
·
治疗学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Wei Fan,Yao Zhang,Yanli Sun,Shujuan Wang,Cong Zhang,Xichen Yu,Weiting Wang,Kai Dong
Antibacterial textiles play an important role in preventing the spread of infectious diseases. However, the development of their application is limited due to the lack of controlled release of antibacterial agents, low antibacterial efficiency and poor antibacterial durability under high temperature environment. The preparation of antimicrobial nanofibers by heating-controlled release and electrospinning may be an effective solution. In this paper, we prepared twisted composite yarns with high abrasion resistance, excellent electrothermal properties, light properties, antibacterial properties and slow-release properties using the technique of conjugate electrospinning combined with the conventional twisting process. With an applied voltage of 2 V, the temperature of the composite twisted fabric can reach 45 ℃, which obviously promotes the release of antibacterial agent in the nanofiber compared with the normal temperature. The photo thermoelectric properties of the yarn also enable body temperature management, with heating to high temperatures at low voltages. In addition, the twisted composite yarn inhibited S. aureus , E. coli and C. albicans up to 99.6 %, 95.7 % and 72.5 %, respectively, and the inhibition rate was almost unchanged after 20 times of water washing. The twisted composite yarn reported in the present article would provide a new methodology for to multi-functional textiles.
研究领域:
纺织科学
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ENERGY AND BUILDINGS
·
2025
·
IF 7.1
Dongmei Lei,Yu Li,V.H. Giang Phan,Ngoc-Thuy Huynh,Yi Li
Many studies have shown that buildings account for 30–40 % of total energy consumption worldwide. Due to the high thermal diffusion coefficient of ordinary windows, energy consumption of traditional buildings is relatively high. Therefore, it is very important and necessary to develop building energy-saving technologies to solve these problems. In this work, an anionic surfactant (sodium dodecyl sulfate) with adjustable critical solution temperature is introduced into polyvinyl alcohol (PVA)-based hydrogels to render the hydrogels phase-transition ability. By adding binary solvents of water and glycerol (GL), the prepared hydrogels show outstanding anti-freezing and anti-drying properties as well as high transparency. In addition, the hydrogels have excellent mechanical and flame-retardant properties. As smart curtains, the hydrogel reported in this work can protect privacy at night, allowing the sunlight to pass through during the day (without consuming additional energy) and effectively reducing indoor temperatures (up to 4.9 °C). This hydrogel not only reduces indoor temperature and saves energy, but also has the potential for large-scale industrialization because of the simple preparation process and the use of cost-effective raw materials. This allows the hydrogel to be used in applications such as building facades, energy saving, and privacy protection.
研究领域:
材料科学
·
高分子科学
·
建筑技术
·
能源效率
·
软物质物理
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Muyang Gu,Yaoqi Huang,Kaidi Bao,Liuyi Wang,Ting Huang,Yuanyuan Li,Xiaomin Cheng
Hydrated salt phase change materials have great application value in passive thermoregulation fields due to their low phase change temperature . However, their practical applications are limited by problems such as leakage and phase separation, which require urgent attention. To solve these problems, in this study, a W/O emulsion system was constructed by sol-gel method, and microencapsulated composites with graphene oxide (GO) as the thermally conductive reinforcing phase, silica as the shell material, and calcium chloride hexahydrate (CaCl 2 ·6H 2 O, CCH) as the core material was prepared. The regular spherical SiO 2 shell layer effectively reduces the possibility of leakage of the core material. The excellent thermal conductivity of GO increases the thermal conductivity of the composites by about 41.14 % compared with that of pure CCH and maintains a latent heat of >114.1 J/g. The encapsulation of SiO 2 and the introduction of GO improve the thermal cycling stability of the composites. After 150 thermal cycles, the composites still had 96.5 % (110.1 J/g) latent heat and 99.6 % (0.708 W·m −1 ·K −1 ) thermal conductivity. The GO/SiO 2 @CCH microencapsulated composites had good temperature regulation. This study provides a promising solution for preparing hydrated salt-based shape-stabilized composites and expands their applications in construction and other fields.
研究领域:
材料科学
·
热能工程
·
能源存储
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 40
·20970-20978
·
IF 11.301
Chao Chang,Xiao Nie,Xiaoxiang Li,Peng Tao,Benwei Fu,Zhongyong Wang,Jiale Xu,Qinxian Ye,Jingyi Zhang,Chengyi Song,Wen Shang,Tao Deng
Converting solar energy into storable thermal energy within organic phase change materials has emerged as a promising way to overcome solar intermittency and continuously harness solar-thermal energy for many heating-related applications. The low thermal conductivity and leakage issue of the phase change materials, however, limit scalable solar-thermal energy storage and their practical applications. Inspired by the dynamic thermoregulation behavior of butterfly wings, here we demonstrate rapid roll-to-roll solar-thermal energy harvesting within flexible form-stable composite phase change materials. Instead of static charging the bulk materials, the thin composite sheets are exposed to solar radiation for rapid charging while being continuously rolled. Due to shortened heat-diffusion distance and rollability of the composites, it achieves fast uniform solar-thermal energy storage within the bulk storage media. The flexibility of charged composites also enables broad tuning of the discharging behavior, and offers the possibility to explore wearable thermotherapy and other flexible solar-thermal applications.
研究领域:
材料科学
·
可再生能源
·
太阳能
·
热能存储
·
复合材料
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2021
·Vol. 8
·期 5
·055304
·
IF 1.62
Jingyi Liu,Shifang Jia,Xianxian Lin,Huimin Cao,Wenbin Wang,Xi Guo,Weisheng Sun
In this work, a novel phase change energy storage wood (PCESW) was fabricated by impregnating solid-solid phase change materials (SSPCM) into delignified wood. The SSPCM was prepared by using polyethylene glycol (PEG) 1500 as the thermal energy storage ingredient, hexamethylene diisocyanate (HDI) as the cross-linking agent and castor oil (CO) as the skeleton material. The chemical composition and structure of SSPCM and PCESW were confirmed by fourier transform infrared spectroscopy (FTIR); the crystalline structure of PEG and SSPCM were tested by x-ray diffraction (XRD); the microstructure of PCESW was observed by scanning electron microscopy (SEM); thermal properties and durability of SSPCM and PCESW were investigated by differential scanning calorimetry (DSC) and thermogravimetric analysis (TG). The results showed that: (1) the porosity of wood was improved obviously after delignification and SSPCM mainly distributed in wood vessels; (2) PCESW-15 exhibited superior temperature-regulating performance and thermal stability; (3) PCESW-15 presented outstanding shape stability and no liquid leakage occurred during the phase transition. The great thermal performance of PCESWs suggested that it can be used as energy-saving building materials for indoor temperature regulating.
研究领域:
材料科学
·
储能技术
·
建筑材料
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
Chao Shu,Hao-Yu Zhao,Sai Zhao,Wenchao Deng,Peng Min,Xiao-Hang Lu,Xiaofeng Li,Zhong-Zhen Yu
With the increasing concerns about the shortage of fossil fuels and the environmental pollution, it is imperative to utilize clean and renewable solar energy. Although organic phase change materials have great potentials in storing and releasing thermal energy , the poor solar light absorption and low thermal conductivity limit their efficiencies in absorbing solar energy and converting it to thermal and electrical energies. Herein, highly thermally conductive phase change composites with enhanced thermal energy storage capabilities are prepared by constructing vertically aligned graphene/cellulose nanofiber aerogels (GCAs) followed by vacuum-assisted impregnation of paraffin for efficient temperature regulation and solar-thermal-electric energy conversion applications. An optimal GCA/paraffin phase change composite exhibits an exceptional thermal conductivity of 15.9 W m −1 K −1 at the low graphene loading of 3.35 wt%, a high latent heat retention of 98%, and a greatly enhanced shape stability. Furthermore, the phase change composite is efficient in the temperature regulation of a greenhouse and the solar-thermal-electric energy conversion. A high output voltage of 823.2 mV is achieved under the solar light irradiation of 5 kW m −2 . This work demonstrates a promising strategy for efficiently absorbing and converting solar energy, and storing and utilizing thermal energy for applications in energy-related devices and systems.
研究领域:
材料科学
·
能源工程
·
太阳能
·
热管理
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2020
·
IF 6.306
Huihuang Xiong,Lan Guo,Xuejin Mao,Ting Tan,Hao Wan,Yiqun Wan
A magnetic hydrophilic molecularly imprinted material (MIM) with multiple stimuli-responses was prepared for efficient recognition of bisphenol A (BPA). MIM consisted of a magnetic core, an inner silica dioxide shell and an outer hydrophilic polymer shell, responsive for rapid magnetic separation, protection of the magnetic core and pH-/thermo-sensitivity to BPA, respectively. Controlled adsorption and release of BPA by pH/temperature regulation were realized through the reversible components of poly[N-isopropylacrylamide- co -2-(dimethylamino)ethyl methacrylate (NIPAM-DMAEMA)] (PND). The resultant MIM possessed superior affinity, selectivity and kinetics to BPA in aqueous solution. MIM was successfully applied to detect BPA in beverages via dispersive solid-phase extraction (d-SPE) coupled with high performance liquid chromatography (HPLC), exhibiting satisfactory recoveries of 80.70–108.18% with relative standard deviations (RSD) below 6.08%. The limit of detection of BPA was obtained as low as 3.75 nmol/L. The versatile MIM could be a promising alternative for extraction/removal of BPA in complicated samples by multiple-stimuli regulations.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Jingjing Li,Jinghua Yu,Zhao Sun,Huan Liu,Xiaodong Wang
This work focuses on an interdisciplinary issue in energy management and biosensing techniques. Aiming at enhancing the biosensing detection of dopamine at high ambient temperatures, we developed an innovative integration of phase-change microcapsules with a metal–organic framework (MOF) based on zeolitic imidazolate framework-8 to develop an intelligent electrochemical biosensing system with a thermal self-regulation function. We first fabricated a type of electroactive microcapsules containing a MOF-anchored polypyrrole/SiO2 double-layered shell and a phase-change material (PCM) core. The resultant microcapsules not only exhibit a regular spherical morphology with a layer-by-layer core–shell microstructure but also display an effective temperature-regulation capability to enhance enzymatic bioactivity under phase-change enthalpies of around 124.0 J·g–1 along with good thermal impact resistance and excellent thermal cycling stability for long-term use in thermal energy management. These electroactive microcapsules were then used to modify a working electrode together with laccase as a biocatalyst to construct a thermal self-regulatory biosensor. With a high sensitivity of 3.541 μA·L·μmol–1·cm–2 and a low detection limit of 0.0069 μmol·L–1 at 50 °C, this biosensor exhibits much better determination effectiveness toward dopamine at higher temperatures than conventional biosensors thanks to in situ thermal management derived from its PCM core in the electroactive microcapsules. This study offers a promising approach for development of intelligent thermal self-regulatory biosensors with an enhanced detection capability to identify various chemicals accurately in a wide range of applicable temperatures.
研究领域:
材料科学
·
生物传感技术
·
能源管理
·
电化学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Comparative Biochemistry and Physiology D-Genomics & Proteomics
·
2023
·
IF 3
Cheng Zhao,Sijin Wang,Yuxi Liu,Peng Chu,Bing Han,Xianhui Ning,Tao Wang,Shaowu Yin
Temperature is a critical factor that regulates the reproduction processes in teleost. However, the gonadal response mechanism to cold stress in fish remains largely unknown. In the present study, female zebrafish were exposed to different extents of low temperatures at 18 °C and 10 °C for 48 h. The ovarian histology was remarkably damaged after cold stress exposure. Integrated analysis of miRNA-mRNA was used to investigate the ovarian response to acute cold stress. A large number of mRNAs and miRNAs were altered by cold stress, which are involved in extensive biological processes . It is indicated that the signal transduction of MAPK and Calcium signaling pathway is highly engaged in zebrafish ovary to adapt to cold stress. The immune system was dysregulated by cold stress while the ovarian autophagy was activated. Remarkably increased gene number related to reproductive functions was identified in the cold stress at 10 °C compared to the control. The cold stress-induced dysregulated reproductive genes include star , hsd3b1 , hsd17b1 , inha , insl3 , amh , nanos1 and foxl2 . Combined with the dysregulated insulin, IGF and progesterone signaling, it is suggested that cold stress affects ovarian function in multiple aspects, including oocyte meiosis, folliculogenesis , final maturation and ovarian maintenance. On the other hand, the ovarian miRNA-mRNA regulatory network response to cold stress was also constructed. Overall, our result revealed the ovarian response to cold stress in zebrafish and provided insight into the fish adaptation mechanism to acute temperature change.
研究领域:
水生生物学
·
生殖生物学
·
分子生物学
·
基因组学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 14
·8097-8103
·
IF 3.119
Wenbin Wang,Huimin Cao,Jingyi Liu,Shifang Jia,Lin Ma,Xi Guo,Weisheng Sun
Phase change energy storage wood (PCESW) was prepared by using microencapsulated phase change materials (MicroPCM) as thermal energy storage (TES) materials and wood as the matrix. The incorporation of MicroPCM and wood was realized using a vacuum impregnation method. The morphology and microstructure of MicroPCM, delignified wood (DLW) and PCESW were observed by scanning electron microscopy (SEM); the thermal properties including phase change temperature, enthalpy, thermal stability, thermal conductivity of MicroPCM and PCESW were characterized by differential scanning calorimetry (DSC), thermogravimetric analysis (TG) and laser flash analysis (LFA). The results showed that: (1) delignification improved the porosity of wood and enhanced the impregnation effect, MicroPCM got into the delignified wood successfully and mainly distributed in the vessels; (2) PCESW had excellent energy storage capacity and suitable phase transition temperature for regulating indoor temperature; (3) PCESW had prior thermal stability at room temperature and great durability after 100 heating–cooling cycles; (4) addition of graphene greatly improved the thermal conductivity of PCESW. The TES composite can be used as an indoor temperature regulating material for building energy conservation.
研究领域:
材料科学
·
热能工程
·
建筑科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）