COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Muhammad Imran Jamil,Yuhang Cai,Waqar Ahmed,Xiaoli Zhan,Fengqiu Chen,Dangguo Cheng,Qinghua Zhang
Natural species use their surface structures for water harvesting. It is the dire need of the hour to learn from nature, mimic its functions, and solve the water scarcity problem through dew condensation . However, the present microscale and nanoscale approaches still suffer from complicated fabrication methods and durability failure in harsh conditions. Here, we introduce a bioinspired slippery surface of candle soot particles which uses its bumps to enhance the growth of condensed water droplets. The Namib desert beetles-inspired convex topography, cacti-inspired asymmetric slope, and Nepenthes pitcher plant-inspired slippery surface of soot particles synergistically combines the large droplet nucleation density, fast droplet coalescence, and easy removal of droplet from the surface. The hydrophilic SLIPS of soot particles harvests water at a rate of 326.4 ± 9 mg/cm 2 h -1 which is 70 % high as compared to hydrophobic SLIPS of soot particles. The fluorinated SLIPS reveals 32 % high water collection rate as compared to the methyl-terminated SLIPS of candle soot particles and the results are corroborated by calculating the intermolecular hydrogen bonding energies through DFT. The programmed motion of water droplet on a slippery surface of soot particles is also observed by applying laser light, heat, and magnetic field even against gravity. The slippery surface shows long-term stability due to nano-porosity, permeation of lubricant into soot particles and lubricant’s crosslinking ability with the binder. The developed surface is biocompatible, self-cleaning, and suitable for water harvesting particularly in cold and arid regions.
研究领域:
材料科学
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环境科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2018
·
IF 4.244
Xueyun Wang,Ning Li,Daren Xu,Xiangchao Yang,Qunyan Zhu,Dongyang Xiao,Nan Lu
Superhydrophobic substrate is applied in matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) detection due to its confinement effect. The weak interaction of superhydrophobic surface with water/salts makes it potential in one-step enrichment and desalting of peptide in MALDI MS analysis. We fabricate a superhydrophobic substrate by spin-coating poly(dimethyl siloxane) (PDMS) on a candle soot layer. On this substrate, the peptide analytes can be confined and enriched in a small area due to the confinement effect and its strong hydrophobic interactions with PDMS. Meanwhile, the desalting can be easily realized by removing the residual solution after the absorption of analyst molecules due to the weak interaction between water/salt contaminants and the superhydrophobic surface. Using this substrate, angiotensin III (Ang III) in the presence of salt with high concentration (2 M or saturated) can be analyzed, and the peptide sequence coverage of 10 μg/mL myoglobin (MYO) and bovine serum albumin (BSA) digests is enhanced to 51% and 26%, which is 37% and 21% analyzed with the commercial ZipTipC 18 pipette tips. The LOD of bacitracin A (Bac A) in milk with this substrate is 100 pM and nearly 360 times lower than the LOD of standard testing method. This substrate has potential practical applications in proteomics research and actual sample analysis.
研究领域:
分析化学
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蛋白质组学
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生物医学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2020
·
IF 6.155
Binbin Zhang,Jizhou Duan,Yanliang Huang,Baorong Hou
Nature-inspired superhydrophobic coatings with typical Cassie-Baxter contacts garner numerous interests for multifunctional applications. However, undesirable poor mechanical and thermal stability are still crucial bottlenecks for real-world employment. This work introduces a cost-effective, fluorine free and versatile strategy to achieve double-layered PDMS agglutinated candle soot coating with superior water-repellent superhydrophobicity. The surface morphologies, chemical compositions and wettability behaviors were investigated in detail. The mechanical stability, chemical stability and durable corrosion resistance of the fabricated PDMS-CS coating were evaluated through friction, calcination and electrochemical impedance spectroscopy. The results demonstrate a remarkably enhanced mechanical robustness and corrosion resistance, indicating PDMS units can act as an effective agglutinating agent between candle soot and underlying substrate. The synergistic effect of PDMS agglutination, porous network nanostructures and extremely low surface energy of incomplete combustion induced candle soot deposition contribute to the eventually robust corrosion resisting coating, which greatly increases the possibility for practical applications.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
WEAR
·
2024
·
IF 5.3
Kangshuai Li,Yanbin Zhang,Wenkai Tan,Jiwen Wang,Zehua Xu,Zhanjun Li,Qiang He
The prolonged operation of the motor in the all-electric aircraft can cause the fragmentation and shortening of grease thickener fibers, ultimately resulting in the lubricating grease becoming ineffective. In order to avoid grease failure causing motor winding burnout, this paper uses a four-ball friction testing machine to test the tribological properties of six composite greases containing candle soot with different concentrations, and analyzes the changes in friction coefficient and wear diameter. In addition, by building a test platform for motor vibration and noise, this paper studies the influence of lithium complex grease on vibration and noise characteristics of aviation electrical machine at different propeller speeds. The results show that the addition of 0.04 wt% candle soot lithium grease has the best tribological properties and vibration inhibition properties, because the candle soot in the oil film changes the sliding friction into rolling friction in the contact area of some friction pair. The temperature rise test of aviation electrical machine shows that the lithium complex grease plays an active role in the heat dissipation performance of the high-speed rotating motor.
研究领域:
材料科学
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机械工程
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航空航天工程
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Xinghua Wu,Jiaxing Tang,Zhanlang Ye,Zhenghui He,Junxi Liang,Rui Yan,Jun Hu,Shunli Zheng
In this study, we demonstrated a multi-layer fluorine-free superhydrophobic coating with anti-condensation and anti-biofouling properties. Polyethylene terephthalate was introduced to fix the candle soot layers. The coating exhibits exceptional superhydrophobicity due to the formation of nanocarbon chains resulting from incomplete combustion of the candle. The obtained superhydrophobic coatings exhibited enhanced anti-condensation and anti-algae properties. The coatings presented suppressed the nucleation and growth of condensates at a subcooled temperature of 8 °C. To examine the anti-biofouling property of the surface, the as-prepared samples were submerged in impurity water for 7 days. The Scenedesmus obliquus failed to adhere and proliferate on the coating surface during the 7-day continuous immersion. The developed coating holds promise to provide a low cost, high-throughput, faster way to develop function coatings for industry applications.
研究领域:
材料科学
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生物技术
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2024
·
IF 7.6
Jiali Zhu,Shuang Wu,Hongxing Yue,Erhao Gao,Wei Wang,Jing Li,Zuliang Wu,Shuiliang Yao
Photochemistry plays a significant role in the atmospheric aging processes of soot. However, the physicochemical properties and changes in environmental and health effects of soot particles from sacrificial sources after photochemical aging remain unclear. The reaction mechanisms of soot under different irradiation wavelengths require further investigation. In this study, candle soot from sacrificial sources was subjected to photochemical aging using ultraviolet (UV) and visible light. The experimental results of oxidation potential (OP) and heterogeneous oxidation of sulfur dioxide (SO 2 ) indicated that both UV and visible light promoted the photooxidation of candle soot, leading to significant increases in oxygen-containing functional groups, environmentally persistent free radicals, and negative charges on soot surfaces. After photochemical aging, candle soot exhibited higher OP values and enhanced SO 2 oxidation and sulfate formation. UV light had a stronger photooxidation ability on candle soot than visible light. Mechanistic analysis revealed that the photochemical aging mechanisms driven by reactive oxygen species were different under these two wavelengths. Photosensitive aging induced by organic carbon under UV light was stronger than the photocatalytic oxidation induced by element carbon under visible light. Our research findings provided new insights into the photochemical aging mechanisms and health impacts of soot.
研究领域:
大气科学
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环境健康
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Coatings
·
2024
·Vol. 14
·期 5
·612
·
IF 2.9
Chenlu Qian,Lu Wang,Qiang Li,Xuemei Chen
Anti-icing/de-icing is of fundamental importance in practical applications such as power transmission, wind turbines, and aerofoils. Despite recent efforts in developing engineering surfaces to delay ice accumulation or reduce ice adhesion, it remains challenging to design robust photothermal icephobic surfaces in a durable, low-cost, easy-fabrication manner. Here, we report an intelligent candle soot-based photothermal surface (PDMS/CS60@PDMS/Al) that can utilize sunlight illumination to achieve the multi-abilities of anti-icing, de-icing, and self-cleaning. Our method lies in the construction of hierarchical micro/nanostructures by depositing photothermal candle soot nanoparticles, which endow the surface with superior superhydrophobicity and excellent photothermal performance. The underlying mechanism is exploited by establishing the heat transfer model between the droplets and the cooled surface. We believe that the smart PDMS/CS60@PDMS/Al developed in this work could provide a feasible strategy to design intelligent engineering surfaces for enhanced anti-icing/de-icing.
研究领域:
材料科学
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表面工程
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Muhammad Imran Jamil,Tao Qian,Waqar Ahmed,Xiaoli Zhan,Fengqiu Chen,Dangguo Cheng,Qinghua Zhang
Clathrate hydrate growth, deposition, and plug formation during oil and gas transportation causes blockage of pipelines. An effective strategy to solve this problem is to mitigate the hydrate formation and reduce its adhesion on pipe walls through a coating process. However, durability failure, corrosion, inability to self-heal, high cost, and strong hydrate adhesion remain unsolved issues. To address these challenges, in this work, we present an in situ self-replenishing nonfluorinated durable hydrate-phobic coating of candle soot particles. The candle soot coating reduces hydrate adhesion by promoting a thick barrier film of hydrocarbons between the hydrate and the soot coated substrate. The hydrocarbons permeating the soot coating display a high contact angle for water and inhibit the formation of water bridges between the hydrate and soot coated substrate. The spherical cyclopentane hydrate slides off easily on the candle soot coating inside the cyclopentane environment. The hydrate former, cyclopentane–water emulsion, and THF–water mixture have high contact angles as well as low hydrate adhesion on soot coating simultaneously. In addition, the coating is flow-induced long-term slippery, durable, low cost, anticorrosion, self-cleaning, and suitable for practical applications.
研究领域:
材料科学
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能源工程
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表面化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Chenbo Yuan,Cong Liu,Xiutao Li,Yuhan Zhi,Xiaowen Zhan,Shan Gao
The practical application of aqueous Zn-metal batteries (ZMBs) is largely hampered by awful parasitic reactions and notorious dendrite growth occurring on Zn anodes. Herein, we directly form a uniform candle-soot (CS) carbon nanoparticle layer on the Zn anode (denoted as CS-Zn) using a facile flame vapor deposition method. The CS layer tightly covers the Zn surface and thus mitigates electrolyte corrosion products. In addition, it balances the electric field and induces fast and even Zn nucleation, promoting interfacial reaction kinetics and suppressing dendrite growth. Benefiting from this synergy effect, CS-Zn allows a low voltage overpotential of 28 mV and a good cyclability (256 h) under an aggressive 5 mA cm–2/5 mAh cm–2 cycling in symmetric cells. Furthermore, the CS-Zn||NaV3O8·1.5H2O (NVO) full cell delivers a high initial capacity of 123.9 mAh g–1 and a capacity retention of 77.2% after over 1000 cycles at 2 A g–1, significantly surpassing those of the Zn||NVO cells (93.9 mAh g–1, 50.3%). The present work offers a simple and cost-efficient strategy to stabilize metallic Zn anodes in progressive aqueous batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Applied Materials Today
·
2024
·
IF 7.2
Yujie Huang,Jiahe Li,Haijun Wang,Tao Han,Wenrong Wang,Hanmei Jiang,Yong Zhou,Gaili Ke,Huichao He
Nanostructured WO 3 film photoanodes could achieve solar water splitting efficiently, through utilizing their structure advantages in light harvesting, carrier transfer, water molecules adsorption and dissociation. The establishment of suitable methods for the preparation of nanostructured WO 3 film photoanodes is highly essential for solar water splitting application. Herein, a facile candle-soot template-mediated method was developed to prepare nanoporous WO 3 films on FTO glass substrate. Through adjusting the solvent of precursor solution, the morphology of WO 3 films can be controlled optionally. Taken the resultant WO 3 films with different morphologies as photoanodes for solar water oxidation, higher activity, faster kinetics and better stability were achieved on the nanoporous WO 3 film photoanodes, relative to the dense-structure WO 3 film photoanodes. Among the resultant nanoporous WO 3 films, the optimal WO 3 (WO 3 -T/H 2 O+EtOH) film was prepared using a water/ethanol mixture as the precursor solution solvent. The water oxidation photocurrent of the WO 3 -T/H 2 O+EtOH film at 1. 23 V vs RHE was 0.39 mA/cm 2 , which was 3.5 times for the dense-structure WO 3 film photoanode. Meanwhile, the WO 3 -T/H 2 O+EtOH film photoanode had stable activity in sustained solar water oxidation reaction. Mechanism investigations revealed that the nanoporous WO 3 film photoanodes being of better water oxidation performance mainly ascribed to their nanostructure for harvesting more photons, easy achieving carrier transfer, beneficial water molecules adsorption and dehydrogenation oxidation.
研究领域:
材料科学
·
能源化学
·
纳米技术
✓ 已验证
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 33
·19157-19168
·
IF 3.119
Muhammad Imran Jamil,Lina Song,Juan Zhu,Numan Ahmed,Xiaoli Zhan,Fengqiu Chen,Dangguo Cheng,Qinghua Zhang
Creating a robust omniphobic surface that repels various liquids would have broad technological implications for areas ranging from biomedical devices and fuel transport to architecture. The present omniphobic surfaces still have the problems of complex fabrication methods, high cost, and being environmentally harmful. To address these challenges, here we report a novel process to design a non-fluorinated, long-term slippery omniphobic surface of candle soot nanoparticles with a silicone binder that cures at room temperature. The porosity, nanoscale roughness, strong affinity of the substrate with the silicone lubricant, and retention of lubricant after curing of the binder play an important role in its stability and low ice adhesion strength at sub-zero temperature. The developed surface exhibits damage resistant slippery properties, repellency to several liquids with different surface tensions including blood, delay in freezing point along with ultra-low ice adhesion strength (2 kPa) and maintains it even below 7 kPa under harsh environmental conditions; 90 frosting/defrosting cycles at −90 °C; 2 months under an ice layer; 2 months at 60 °C; 9 days flow in acidic/basic water and exposure to super-cold water. In addition, this novel technique is cheap, easy to fabricate, environmentally benign and suitable for large-scale applications.
研究领域:
材料科学
·
表面工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2022
·
IF 7.613
P. Su,W. Liu,Y. Hong,Y. Ye,S. Huang
Candle soot (CS) is a desirable carbon nanomaterial for sensors owing to its highly porous nanostructure and large specific surface area. CS is advantageous in its low-cost and facile preparation compared to graphene and carbon nanotubes, but its pristine nanostructure is susceptible to collapse, hampering its application in electronic devices. This article reports conformal coating of nanoscale crosslinked hydrophilic polymer on CS film using initiated chemical vapor deposition , which well preserved the CS nanostructure and obtained nanoporous CS@polymer composites. Tuning coating thickness enabled composites with different morphologies and specific surface areas. Surprisingly, the humidity sensor made from composite with the lowest filling degree, thus largest specific surface area, showed relatively low sensitivity, which is likely due to its discontinuous structure, thus insufficient conductive channels. Composite sensor with optimum filling degree shows excellent sensing response of more than 10 3 with the linearity of R 2 = 0.9400 within a broad relative humidity range from 11% to 96%. The composite sensor also exhibits outstanding sensing performance compared to literature with low hysteresis (3.00%), a satisfactory response time (28.69 s), and a fast recovery time (0.19 s). The composite sensor is fairly stable and durable even after 24 h soaking in water. Furthermore, embedding a humidity sensor into a face mask realizes real-time monitoring of human breath and cough, suggesting promising applications in respiratory monitoring.
研究领域:
材料科学
·
传感器技术
✓ 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）