Small
·
2023
·Vol. 19
·期 40
·2301723
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IF 13.3
Chongjia Lin,Wei Ma,Yinglun Zhang,Man-Kwan LAW,Cruz Y. Li,Yang Li,Zengshun Chen,Keqiao Li,Meng Li,Jiongzhi Zheng,Yunfei Fu,Xiao Yan,Cheng Chi,Jinglei Yang,Weihong Li,Shuhuai Yao,Baoling Huang
A photo- and electro-thermal film can convert sunlight and electricity into heat to solve icing problems. Combination of them provides an efficient strategy for all-day anti-/de-icing. However, only opaque surfaces have been reported, due to the mutual exclusiveness between photon absorption and transmission. Herein, a highly transparent and scalable solution-processed photo-electro-thermal film is reported, which exhibits an ultra-broadband selective spectrum to separate the visible light from sunlight and a countertrend suppress of emission in longer wavelength. It absorbs ≈ 85% of invisible sunlight (ultraviolet and near-infrared) for light-heat conversion, meanwhile maintains luminous transmittance > 70%. The reflection of mid-infrared leads to low emissivity (0.41), which further preserves heat on the surface for anti-/de-icing purpose. This ultra-broadband selectivity enables temperature elevation > 40 °C under 1-sun illumination and the mutual support between photo-thermal and electro-thermal effects contributes to > 50% saving of electrical consumption under weak solar exposure (0.4-sun) for maintaining unfrozen surfaces at −35 °C environment. The reverberation from photo-electro-thermal and super-hydrophobic effects illustrates a lubricating removal of grown ice in short time (< 120 s). The self-cleaning ability and the durability under mechanical, electrical, optical, and thermal stresses render the film stable for long-term usage in all-day anti-/de-icing applications.
研究领域:
材料科学
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能源技术
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光学工程
✓ 已验证
产品关联
DOI
PubMed
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
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2020
·
IF 16.683
Haifeng Yuan,Fan Liu,Guobin Xue,Hui Liu,Yijie Wang,Yiwei Zhao,Xiaoyan Liu,Xiaoli Zhang,Lili Zhao,Zhen Liu,Hong Liu,Weijia Zhou
For efficient conversion from solar energy to hydrogen energy, the integrated system between light absorbing unit and water splitting unit is in the spotlight. Herein, we presented a bifunctional Ni@NCNTs/NF-L as both photothermal conversion layer integrated with thermoelectric generator (TE) and efficient hydrogen evolution reaction (HER) electrocatalyst to reducing the potential, realizing the integration system for overall water splitting. The Ni nanoparticles embedded into N -doped carbon nanotubes (Ni@NCNTs/NF-L) with various patterns are prepared by controllable laser processing and gas-solid calcination reaction. Furthermore, iron nickel oxides nanoparticles on NiFe alloys foil (NiFe-L) are obtained by laser ablation, which are applied for the oxygen evolution reaction (OER) electrode to establish two electrode electrolyzer of (−) Ni@NCNTs/NF-L/TE // NiFe-L (+) for overall water splitting. Integrating with one TE, the voltage of water splitting at the current-density of 50 mA cm −2 reduced from 1.947 V to 1.213 V under the standard AM 1.5 G illumination. The integrated thermoelectric device plays a doubtless role to realize solar energy driving overall water splitting with integration and patterning fabrication in large-scale.
研究领域:
材料科学
·
能源工程
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Wenhao Yang,Bin Yao,Liang Chai,Guang Yang,Longjiang Deng
Flexible porous conductive composites have been widely applied for wearable sensing devices and there is continuous exploration towards multi-functionalization of porous conductive composites. In this work, through sugar template method and following immersion assisted reduction, polydimethylsiloxane (PDMS) sponge embedded with carbonyl iron (CI) was successfully anchored with silver nanoparticles (AgNPs) binded with block copolymer polystyrene- block -poly(ethylene- co -butylene)- block -polystyrene (SEBS). A superhydrophobic multifunctional sponge type conductive composites (SCC) was prepared (CI-PDMS/AgNPs-SEBS Sponge, abbreviated as CP/AgE Sponge). CP/AgE sponge had excellent superhydrophobic properties (water contact angle≈153°), efficient Joule heating (1.6 V, 101 °C within 180 s) and photothermal conversion capabilities (250 mW/cm 2 , 102 °C within 40 s). The CP/AgE sponge pressure sensor had excellent piezoresistive properties, including high sensitivity (3.8 kPa −1 ), wide detection range (160 kPa) and robust stability when subjected to 1000 compression-release cycles, which could be further utilized to accurately and reliably monitor the changing biophysical signals. Besides, CP/AgE sponge had high oil/water separation efficiency as well as magnetically guided waste oil adsorption ability. This work provides a new strategy for preparing a conductive sponge with superhydrophobicity and enriched functionality, which has broad applications in the fields of next generation multifunctional flexible electronics, effective oil/water separation and smart protective skins.
研究领域:
材料科学
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柔性电子
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Songnan Zhang,Xi Wang,Guolong Li,Kaiying Zhao,Gengchen Liu,Zheng Li,Changsheng Qiao,Zhenxue Liu,Zhibin Zhang
Solar energy, as a clean and renewable resource, can be converted into thermal energy and utilized for freshwater production, holding the potential to address the freshwater shortage. Despite numerous studies focused on the development of high-efficiency solar evaporators, the challenge of achieving efficient and continuous water evaporation in low-light or dark environments still requires further investigation. Here, we design a solar evaporator system that combines photothermal and electrothermal water evaporation capabilities, using a conductive raised fabric as the matrix. The system features a PVA/MXene hydrogel-modified photothermal layer, PVA water transport layer, and polystyrene insulation. Results demonstrate that the PVA/MXene evaporator system exhibits outstanding photothermal and electrothermal conversion capabilities. Under 1 sun/10 V conditions, the surface temperature rapidly increases to 102.9 °C, significantly enhances the water evaporation rate. Meanwhile, the PVA/MXene@RF evaporator also demonstrate exceptional photoelectric water evaporation performance (3.37 kg·m −2 ·h −1 , 1 sun/10 V), high conversion efficiency (97.2 %), and effective self-desalting capabilities. This solar evaporator system, enables high-efficiency continuous water evaporation and collection even in dark or low-light conditions, making it a promising solution for addressing freshwater shortage.
研究领域:
能源科学
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材料工程
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2021
·
IF 9.078
Yanli Li,Bing Zhou,Yong Shen,Chengen He,Bo Wang,Chuntai Liu,Yuezhan Feng,Changyu Shen
The durability and large-scale production of Ti 3 C 2 T x MXene-based composites are the main obstacles in industrialized application. Herein, a scalable blade coating method is demonstrated for fabricating the flexible and durable polyvinylidene fluoride (PVDF)/Ti 3 C 2 T x MXene layered films with compact hierarchical brick-and-mortar structure. The highly aligned MXene nanosheets make the obtained PVDF/MXene films with high electrical conductivity from 21.1 to 214.6 S cm −1 . In combination to the multiple wave reflection in hierarchical layered structure and the interfacial polarization between dielectric matrix and MXene, PVDF/MXene films reveal excellent electromagnetic interference (EMI) performance with an optimal specific EMI shielding effectiveness (SSE/t) of 19504.8 dB cm 2 g −1 at only 17 μm thickness. More importantly, the PVDF/MXene film can withstand the damages from mechanical deformation , hot/cold attack and chemical corrosion, meanwhile maintain a stable EMI shielding performance within floating of 5%. Besides, arising from the surface plasmon resonance effect and high electrical conductivity, the PVDF/MXene film reveals photo/electro-thermal heating abilities with rapid response time, high stability and controllability, which ensure their reliable EMI shielding performance under extremely cold conditions.
研究领域:
材料科学
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电子工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Science China-Chemistry
·
2025
·
IF 9.7
Liu Zijian,Chen Chengzhi,Liu Junda,Sun Qi,Huo Bingchen,Du Chunyu,Chen Guangming
Thermoelectric materials hold promises for direct conversion of heat into electricity, making them viable power sources for electronic devices. However, their practical applications in diverse outdoor environment are hindered by limited and discontinuous electricity output. In this study, we propose an all-day solar power generator to achieve highly efficient and continuous electricity generation by harnessing the synergistic effects of photoelectric-thermoelectric conversion and latent thermal energy storage. The all-day solar power generator exhibits an average open-circuit voltage of 6.8 mV during daylight and a remaining 0.9 mV during nighttime. Importantly, the all-day solar power generator achieves dependable outdoor power supply for communication transmission in diverse environmental scenarios. Our research opens a new way for highly efficient and sustainable power generation.
研究领域:
能源科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Qin Wang,Yu-long Liu,Zi-jie Huang,Zi-cheng Tang,De-xiang Sun,Jing-hui Yang,Xiao-dong Qi,Yong Wang
The high viscosity and low fluidity of crude oil impede its adsorption by porous sorbents, making the effective cleanup of crude oil a significant challenge. Herein, inspired by the nano-structure of moth eyes, we developed a hierarchical adsorbent material via electrochemically polymerizing polypyrrole nanowire arrays (PPy NWAs) onto melamine foam (MF), where 1D ordered PPy NWAs were vertically grown on the 3D MF skeleton. The aligned PPy NWAs enhanced hydrophobicity (water contact angle of 151.0°) and served as numerous capillary tubes, thereby achieving 81.0 g g−1 oil adsorption. Due to the continuous PPy network, the MF@PPy foams exhibited a remarkable light-trapping effect with a high light absorption ratio of 98.8% and good electrical conductivity of 201 S m−1. The surface temperature could quickly reach 85.5 °C under simulated illumination (1 sun) and 88.1 °C with a power input (2 V). Interestingly, the photothermal and superhydrophobic effects induced Marangoni flow, leading to controllable light-driven motion. Furthermore, the MF@PPy foams could be remotely operated, allowing for the sustained removal of crude oil from water surfaces via light-activated and pump-assisted systems. This work provides new insights for developing oil adsorption materials by constructing moth-eye structured PPy NWAs, demonstrating great potential for all-weather crude oil adsorption.
研究领域:
材料科学
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环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Hui Zhao,Tong Gao,Jin Yun,Lixin Chen
MXene-based composite films are regarded as up-and-coming multifunctional electromagnetic interference (EMI) shielding materials. However, the conflict between strong mechanical properties and high electrical conductivity hinders their application in modern integrated electronics. Herein, in virtue of density-induced sedimentation, robust and multifunctional liquid metals-reinforced cellulose nanofibers (CNF)/MXene (LMs-CNF/MXene) composite films with Janus structure are fabricated by one-step vacuum-assisted filtration method. Not only does the nacre-like structure of the CNF/MXene layer not destroy, but the deposited liquid metals (LMs) layer can serve as conductive potentiation. Due to the special Janus structure, an “absorption-reflection-reabsorption” shielding process is created in LMs-CNF/MXene composite film to strengthen EMI shielding performance. Its shielding effectiveness can reach 51.9 dB at ∼27 µm, and the reflection coefficient falls to 0.89, below those of reported MXene-based shielding films. Meanwhile, the CNF/MXene layer can endow composite films with excellent mechanical properties with a super tensile strength of 110.3 MPa. Notably, the LMs-CNF/MXene EMI shielding composite films also integrate outstanding photo-/electrothermal conversion performances, which can effectively deice outdoors. The robust LMs-CNF/MXene EMI shielding composite films with satisfying photo-/electrothermal performances have extensive application prospects, such as aerospace, wearable electronics, and portable electronics.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Jiehui Li,Yaxin Wu,Jinmei He,Qinghua Liu,Xiaofeng Liu,Hui Liu,Yuyu Xue,Leihuan Mu,Mengnan Qu
Developing functional adsorption materials that efficiently adsorb high viscosity oil is crucial for solving oil spill accidents. Herein, low-density three-dimensional porous melamine sponge was used as the modified substrate. First, phytic acid is selected for modification to make it flame retardant. Then, polypyrrole (PPy) and hexadecyltrimethoxysilane (HDTMS) are modified on its surface through low-temperature polymerization and impregnation, ultimately obtaining a multifunctional durable superhydrophobic PA/PPy/HDTMS@MF (melamine foam) sponges with photo/electro-thermal effects and flame retardant. When the applied voltage is 10 V, the core temperature on the PA/PPy/HDTMS@MF sponge’s surface rapidly increases from 26.4 °C to 134.6 °C within 80 s, and the sponge will not burn and be damaged. Under the irradiation of one sunlight (1 kW/m 2 ), the surface core temperature can rapidly rise from 26.4 °C to 93 °C within 70 s. The superhydrophobic PA/PPy/HDTMS@MF sponge can all-weather absorb kinds of high viscosity crude oil and solid oils that are 18–27 times than its own mass, indicating that the prepared superhydrophobic sponge has excellent oil collection performance. And under one sunlight (1 kW/m 2 ), after 10 cycles of desorption, the prepared superhydrophobic sponge can still absorb 26 times more crude oil than its own weight. In addition, PA/PPy/HDTMS@MF sponge also has the characteristic of photothermal defrosting and deicing, and the ice on its surface can begin to melt within 5 min under one sunlight (1 kW/m 2 ). The melted water will not enter the inside of the sponge, effectively ensuring the utilization efficiency of photothermal effects. Based on the above advantages, the prepared photo/electro thermal conversion superhydrophobic sponge has excellent development prospects in the field of high viscosity oil adsorption and photothermal defrosting/deicing.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yuhan Liu,Bin Li,Yihao Guan,Limei Dong,Bingfeng Li,Wenjun Zhang,Mutai Bao,Yiming Li
Rapid and efficient recovery of crude oil spill is still a great challenge because of its high viscosity and limited flowability at ambient temperature. Given this dilemma, we propose a simple and fast crude oil remediation solution by loading green, low-cost and scalable superhydrophobic fiber felt onto the shipborne oil recovery device, which enables the whole process from crude oil adsorption to recovery. This fiber felt (FF) is prepared based on inexpensive and readily available softwood pulp, and then the adsorbent is endowed with excellent photo/electrical-thermal conversion properties through simple in-situ growth of polypyrrole (PPy). Its surface temperature can rapidly reach 65 °C under 1 kW·m −2 light intensity and 93 °C under the low voltage of 8 V, which makes it high-efficiency in oil spill cleanup under sunlight/low-voltage input. Importantly, combined with COMSOL simulations, the flow behavior of crude oil in the real pore channels of the material is thoroughly investigated, revealing the flow rate distribution and diffusion characteristics of crude oil in the pore channels under different thermal response conditions, which offers a theoretical basis for the adsorption of crude oil. This study integrates the easily prepared fiber felt, which has excellent oil adsorption property, with shipborne oil recovery device, solving the problem of traditional adsorbents being difficult to realize large-scale application due to complex preparation and the lack of supporting devices, and providing an efficient emergency solution for high-viscosity oil spill pollution.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Hao Fang,Jialiang Ma,Jing Lin,Juan Du,Shikuo Li,Hui Zhang,Fangzhi Huang
Using solar energy to treat sewage is a feasible scheme to alleviate the shortage of water resources and reduce carbon emissions. However, the fluctuation of sunlight intensity poses a great challenge to the stability of the treatment process, which hinders its application in the actual water treatment scene. Herein, based on the adhesion of hydrogel, an electrothermal-assisted all-weather solar steam generator with sandwich structure was synthesized through hydrogel implantation strategy, in which polyacrylamide hydrogel with thermal grease-modified heating wires was implanted as the middle heat conduction layer, the photothermal evaporation layer as the upper layer and the waste heat evaporation layer as the bottom layer. The electrothermal assisted solar evaporator (EASE) perfectly achieves the superposition of photothermal and electrothermal effects, and can achieve high interfacial water evaporation performance under extremely low auxiliary working voltage. Applying a low voltage of 2 V to both ends of the evaporator can achieve a high evaporation rate of 4.58 kg m −2 h −1 under 1 solar irradiation, which is similar to the sum of the evaporation rate under only 1 solar illumination (2.22 kg m −2 h −1 ) and a 2 V voltage input (2.26 kg m −2 h −1 ). More interestingly, the suitable thickness of the hydrogel layer not only ensures the transfer of heat between layers, but also weakens the heat loss caused by the water flow effect. The implantation strategy ensures the stability of the water structure and inhibits the hydrogen reaction of electrolytic water in the electrothermal process. This work provides an important theoretical and practical reference for the preparation of all-weather solar interface water purification equipment.
研究领域:
材料科学
·
环境科学
·
能源工程
✓ 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）