CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Wang Guo,Zhiqiang Ma,Zhou Chen,Haojun Hua,Dong Wang,Mohamed Elhousseini Hilal,Yatian Fu,Pengyi Lu,Jian Lu,Yuanting Zhang,Derek Ho,Bee Luan Khoo
Increasing demand for flexible sensors in healthcare has spurred the development of nanomaterial-polymer composite sensors. However, existing pressure sensors suffer from low sensitivity due to poor interactions between the functional filler and the polymer matrix. For example, the direct chemical bonding of nanomaterials to the surface of chemically inert polymers such as polydimethylsiloxane (PDMS) is not easily achieved. Herein, we demonstrate that MXene can significantly promote the sensitivity of a thin and soft piezoresistive sensor based on a surface functionalized PDMS (FPDMS) sponge. Using plasma treatment, we constructed a MXene-FPDMS (MFP) sponge with high mechanical strength via the interlayer hydrogen bonding effect. The formed MFP sponge structure (∼450 μm in thickness) endows the pressure sensor with a high sensitivity of 14.2 kPa −1 and a low modulus of 9.7 kPa, critical for detecting ultra-low pressures. When operated with deep learning algorithms, the MFP sponge sensor successfully classifies the pronunciation of 26 letters and various polite expressions with an average accuracy of 94 ± 0.6 %. We envision that this work paves the way for the development of intelligent wearable platforms.
研究领域:
材料科学
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电子工程
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人工智能
✓ 已验证
产品关联
DOI
高影响因子
Particuology
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2022
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IF 3.251
Yukui Gou,Yuanye Hao,Weilong Cai,Jianying Huang,Yuekun Lai
Particulate matter (PM) is a significant danger to both environment and human health. Despite the development of a series of air filters, they do not work well in harsh environment such as high temperature, high humidity or long-time filtration. To make a three-dimensional (3D) particle capture device, a sacrificial template approach was used to manufacture polydimethylsiloxane (PDMS) sponge, and then zeolite imidazole framework-8 (ZIF-8) was grown in situ on the 3D network of PDMS sponge. The removal efficiency of PM 2.5 or PM 10 is greater than 99.8% because of the high specific surface area and porous network structure of PDMS sponge, as well as the large number of metal sites of ZIF-8. In addition, the sponge filter has long-term filtration stability and still achieves excellent performance after 65 h of filtration. The composite sponge can adapt to harsh environments such as high temperature (250 °C) and high humidity (90% RH). Composite sponge filter has a regular shape, and it may be customized to any shape as required. This study provides a new idea for designing 3D high-efficiency air filters that can adapt to harsh environments.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
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2022
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IF 11.211
Jing Jiang,Huiling Jiang,Ying Xu,Lunhong Ai
Solar water evaporation is emerging as one of the most cost-effective and sustainable technologies for efficient seawater desalination . However, salt crystallization during solar desalination severely limits light absorption and reduces evaporation efficiency. Balancing the desirable evaporation rate and the suppressed salt crystallization is critical for long-term solar desalination, but remains a major challenge. In this work, 1T/2H MoS 2 nanoflower embedded in a macroporous PDMS sponge (MoS 2 /PDMS) was fabricated and used as a novel solar evaporator for efficient and durable solar desalination. Thanks to the broadband absorption of MoS 2 and the thermal insulating PDMS sponge, the MoS 2 /PDMS sponge presents a high evaporation rate of 1.47 kg m −2 h −1 and an evaporation efficiency of 81.5 % in pure water under one sun irradiation (1 kW m −2 ). Importantly, the MoS 2 /PDMS sponge with macroporous structure and wet-state hydrophilic wettability achieves efficient and durable solar desalination in simulated seawater (3.5 wt% NaCl solution), effectively suppressing salt crystallization. This finding offers a new way to design robust evaporators with structural flexibility, efficient evaporation and durable desalting for solar desalination.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Xiangshuai Li,Siyang Tanyan,Songjiang Xie,Rong Chen,Qiang Liao,Xun Zhu,Xuefeng He
Solar driven interfacial evaporation has caught the eyes of global researchers in the past few years due to its outstanding vapor generation ability by using clean solar energy. Extensive investigations have been carried out to explore solar absorber/receiver materials for efficient photothermal conversion and heat concentration at the water-air interface. However most of the presented solar absorber materials are expensive and the preparation processes are often complicated. Here we proposed a polydimethylsiloxane (PDMS) sponge with three-dimensional porous structure embedded with carbon nanoparticles (CNPs) as the solar absorber for solar driven interfacial evaporation. The proposed PDMS-CNPs sponge can be easily prepared through a simple procedure. Characterization results indicate the fabricated PDMS-CNPs sponge has microscale 3D porous structure with ideal optical absorption in visible/near-infrared (NIR) wavelength and good water transport ability after surface modification. The solar driven evaporation performance of the proposed PDMS-CNPs sponge was evaluated under different working conditions. In floating condition, the vapor evaporation rate and solar-vapor conversion efficiency at one sun radiation intensity could reach 1.36 kg/m 2 ·h and 77.8 %, respectively. Effects of light intensity, sponge thickness, and seawater salinity were also investigated. The PDMS-CNPs sponge has exhibited excellent solar driven evaporation performance and good compatibility under different operation conditions. With its great potential in solar energy harvesting and vapor generation, it can be wide applied in researching/industrial scenarios.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Huanhuan Dong,Xiaoyu Ji,Zhao Li,Junxiang Guo,Shan Peng
Viscous oil spills (e.g., petroleum and diesel) in marine environments and domestic oily wastewater pose seriously ecological and public health risks owing to their high viscosity and poor fluidity, making the remediation a very urgent challenge. To address these issues, we designed an inherently hydrophobic MXene/hollow CuCo-MOF (H-CuCo-MOF)@PDMS sponge featuring an instantly photothermal response and a multiscale wrinkled structure. The confined effects of H-CuCo-MOF and MXene synergistically generate an efficient electron transport network, where interfacial charge transfer enhances carrier lifetime, thereby prolonging photothermal conversion efficiency. In Addition, the high specific surface area of H-CuCo-MOF and the layered structure of MXene increase confined adsorption sites while preventing MOF aggregation. Stress mismatch between flexible PDMS and rigid MXene form a highly wrinkled architecture, effectively mitigating MXene stacking. Under 1-sun irradiation, the sponge’s surface temperature quickly reaches ∼80 °C within 20 s, altering surface tension and inducing the Marangoni effect to accelerate oil absorption. Moreover, taking advantages of high match between the coated sponge and the viscous oil, the separation efficiencies are exceeding 95 % for diesel oil and rapeseed oil, and 82.7 % for crude oil. The material also proves superior durability, maintaining stable hydrophobicity after 150 friction cycles, exceptional mechanical recovery (99.2 % after 10 compressions), and notable salt resistance and antibacterial properties.
研究领域:
环境科学
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材料工程
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纳米技术
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2024
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IF 8
Morui Wang,Haoxuan Diao,Cheng Dou,Zhenye Wu,Liguang Ruan,Zhixin Wang,Zhong Wang,Weichun Ye,Jiangong Duan,Yuee Li
This work aims to face the challenge of label-free and quantitative detection for pathogenic microorganisms concerning on food safety and medical diagnosis. Ag NPs@PDMS sponge SERS substrates were developed through the "mold transfer-surface embedding" method for pathogenic microbial detection. The pore structure provided large specific surface area and critical contact sites, which endowed the detection limit of only 1 CFU/mL for E.coli . Importantly, six different microorganisms could be identified using this SERS substrate. The classification models combining three types of data dimension reductions and five types of machine learning algorithms were constructed to achieve the automatic classification of microorganisms. Among these algorithms, the PCA-SVC model held the highest accuracy of 92.17%. Different from labeled SERS, label-free SERS technique is conducive to the discovery of unknown microorganisms in water-environment. Therefore, this SERS substrate is expected for microbial system assessment and microbial safety monitoring, combined with handheld Raman spectrometer and artificial intelligence.
研究领域:
分析化学
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微生物学
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生物医学工程
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机器学习
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食品安全
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医学诊断
✓ 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）