JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Zengming Tang,Dong Xie,Suzhe Li
Activated carbon fibers (ACF) are widely used to remove gaseous radioiodine produced during spent fuel reprocessing owing to their excellent adsorption properties. However, ACF's strong affinity for moisture tends to dominate, significantly reducing its ability to capture iodine in humid environments. The study used a one-step facile modification method of spray-deposited poly(divinylbenzene) (PDVB) nanoparticles on ACF to prepare hydrophobic activated carbon fiber (ACF-PDVB1.5). Compared to the initial ACF, the ACF-PDVB1.5 enhances the specific surface area to 1571 m 2 /g while maintaining abundant active sites, overcoming the disadvantage of pore reduction caused by traditional modification methods. More importantly, they also have excellent acid and alkali resistance and hydrophobicity (water contact angle 131.1°), with a preference for I 2 pores (97 % microporosity). The iodine capture capacity of ACF PDVB 1.5 showed a significant increase compared to the initial ACF, as indicated by both static and dynamic adsorption tests. Notably, the dynamic iodine adsorption capacity of ACF-PDVB1.5 in a mixed iodine-water vapor stream at actual temperature (75 °C) and humid (50 % RH) conditions was 1847.69 mg/g, an increase of 55.47 % over the capacity of initial ACF (1188.71 mg/g). This work improves the overall I 2 adsorption performance through hydrophobicity and pore size coordination.
研究领域:
材料科学
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环境工程
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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2022
·Vol. 41
·期 7
·1037-1050
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IF 3.815
Lu Chen-Chen,Gao Wei-Chen,Li Peng,Wu Wei,Li Robert K. Y.,Zhao Hui
Flexible strain wearable sensors have attracted considerable attention due to their advantages of low cost, lightweight, high sensitivity and good flexibility. However, the strain sensors are easy to be damaged in an extreme humidity environment or by the wearer’s sweat in the process of use, resulting in detection disorder or even a short circuit. Furthermore, preparation of sensors with stable properties under extreme environments is one of the most important research directions. To fill this gap, a flexible sensor was prepared by using polyurethane and carbon nanotubes, then modified by polydopamine and 1 H ,1 H ,2 H ,2 H -perfluorodecane-mercaptan. A typical tunnel model was used to explain the working mechanism of the sensor, the sensitivity of the sensor is also explained and evaluated by the tunneling theory. The results show that the sensor has good sensitivity (the sensor has a stable sensing signal output under a strain range from 2% to 300%) and stability over 8500 cycles. At the same time, the sensor has good superhydrophobicity, the water contact angle reaches 152°, and it is still stable in a humid environment. Moreover, this sensor shows excellent performance in monitoring human joint motion (such as finger, elbow, wrist and knee) and physiological signals (such as speaking and drinking). This work provides an effective design method for the sensor which can be applied in a high humidity environment.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
Nano Energy
·
2023
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IF 17.6
Wanglin Zhang,Xianghui Chen,Jiamin Zhao,Xinyue Wang,Xiuzhen Li,Tao Liu,Bin Luo,Ying Qin,Song Zhang,Mingchao Chi,Shuangfei Wang,Shuangxi Nie
Triboelectric nanogenerators (TENGs) have ideal applications in the field of self-powered sensing thanks to their simple structure and flexible working mode. However, the weak operating properties of triboelectric materials in high humidity environments limit the wide application of TENG as sensors. To solve this problem, this work prepared hydrophilic triboelectric materials with natural cellulose as the template and used them for self-powered sensing in high humidity environments. Thanks to the interconnected network of the cellulose scaffold, the complex morphology of the material constructed in concert with Ti 3 C 2 T x during templating provides abundant adsorption sites for water molecules. Over a broad humidity range (40%−90% relative humidity (RH)), the moisture-sensitive triboelectric material can sustain outstanding performance in 150 s with high sensitivity (0.8/1%). The cellulose template-based triboelectric material transmits electrical signals to the user interface wirelessly, enabling self-powered sensing in high humidity environments. This study provides a novel strategy for the design and preparation of high-performance triboelectric materials using cellulose as a template and promotes the study of self-powered sensing in high humidity environments.
研究领域:
材料科学
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传感器技术
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产品关联
DOI
高影响因子
Russian Journal of Physical Chemistry A
·
2024
·Vol. 98
·期 9
·2135-2145
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IF 0.7
Wenjie Liu,Ding Xiang,Liu Jingwei,Meng Jie,Li Xiazhang,Gao Bingying,Zuo ShiXiang,Yao Chao,Xue Bing
Abstract The composites (SiO 2 /HATP) were prepared by condensation reflux and high-temperature calcination using natural attapulgite and silica particles, and it was utilized for the adsorption of toluene. The physicochemical properties of the composite adsorbents were characterized using XRD, FT-IR, SEM, and BET techniques. The SiO 2 /HATP composite material was successfully prepared, with silica particles uniformly loaded onto the surface of ATP. The adsorption performance of the composite materials for toluene was investigated using different feed ratios. The results showed that the composite materials with the mass ratio SiO 2 /ATP equal to 4 exhibited the highest static adsorption capacity for toluene, reaching 236 mg/g. Additionally, dynamic adsorption performance of toluene was evaluated under conditions of 0 and 80% relative humidity, with corresponding breakthrough times of 90 and 36 min, respectively. The adsorption capacity of the composite materials for toluene was 6–8 times higher than that of pure attapulgite clay. Furthermore, the adsorption mechanisms of the composite materials were investigated through adsorption kinetics, adsorption isotherms, and adsorption thermodynamics. The results indicated that the adsorption of toluene by the composite materials followed a pseudo-first-order kinetic model and Langmuir adsorption isotherm, suggesting a spontaneous exothermic physical adsorption process at a monolayer level. Moreover, regeneration experiments were conducted, and after 5 cycles of adsorption-desorption tests, the composite materials maintained a penetration time of 85 and 30 min for toluene under conditions of 0 and 80% relative humidity, respectively, demonstrating good recyclability.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2024
·
IF 8
Qianyu Yang,Dengtian Li,Chunyu Wu,Jiawei Wang,Tao Wang,Yongsheng Zhang,Wei-Ping Pan
The H 2 O content in the flue gas seriously inhibits the application of activated carbon injection adsorption mercury technology. Hydrophobic activated carbon was prepared by hexamethyldisiloxane (HMDSO) vapour deposition, the contact angle of water for hydrophobically modified AC increased from 42° to 143°, and H 2 O adsorption capacity decreased from 17.28 mg/g to 3.05 mg/g when relative humidity was 95%. The simulation results of water channels show that the number of water molecules escaping from the modified AC loaded with hydrophobic functional groups increased by 325%. When the water vapour content was 30%, the mercury removal efficiency of modified AC increased from 58.82% to 89.60% compared with AC, and the adsorption capacity increased by 10.6 μg/g. In high-humidity environments, NO and SO 2 can produce corresponding acids for oxidising Hg 0 , thereby enhancing the adsorption efficiency of Hg 0 , while NH 3 completes with Hg 0 for the active sites on the surface of AC, which has an inhibitory effect.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2024
·
IF 16.8
Chunqi Jiao,Chao Li,Jiaji Yue,Leping Li,Huijie Yang,Yehan Tao,Jie Lu,Yanna Lv,Haisong Wang,Mingqian Tan,Jian Du
Eco-friendly cellulosic fibers-based triboelectric nanogenerators (TENGs) are enormously and increasingly demanded for self-powered flexible electronics. However, under high moisture conditions (e.g. sweat, sailing and rain day), the mechanical behaviors of hydrophilic paper were severely reduced due to the weak wet strength and the cellulosic paper-based sensors were easily destroyed under external force, leading to the device failure and invalid signal acquisition. Herein, an industrial-friendly polyethylenimine (PEI)-assisted pulping strategy was developed to produce advanced cellulosic papers, which possessed reinforced wet strength and tribopositive performance. During pulping procedure, the cationic PEI molecules could be quickly in situ bonded onto the surface of fibers under electrostatic interaction and the interfacial interaction between fibers was significantly enhanced through the formation of hydrogen bonds between the amino groups on PEI and the hydroxyl groups on cellulose fibers . The wet strength was significantly enhanced from 1.93 MPa for pristine paper to 8.33 MPa for cellulose/PEI 1.5% with an enhancement of 4.32 times. Moreover, originating from the enhanced dielectric behaviors upon the introduction of PEI, the optimized cellulose/PEI 1.5% TENG delivered the maximum V OC of 157.3 V, I SC of 3.47 μA, Q SC of 42.73 nC and instantaneously maximum power density of 145.93 mW·m −2 . Our findings proposed a new perspective for fabricating high-performance tribopositive cellulosic materials that withstand high humid conditions.
研究领域:
材料科学
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能源技术
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生物工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Meng Zhou,Meng Yuan,Fangli Wu,Zhuowei Zhao,Heqing Fu
To expand the application range of electromagnetic interference (EMI) shielding materials, it has become an urgent issue to achieve the excellent shielding effectiveness (SE) in extreme environment. In this paper, an ultralight, compressible and superhydrophobic foam composed of melamine foam (MF), Ti 3 C 2 T x MXene and polydimethylsiloxane (PDMS) was constructed via the facile dipping and vacuum-assisted impregnation method. The MF as a skeleton can provide coated substrate for MXene sheets to realize the 3D conductive network. Meanwhile, the PDMS layer of MF/MXene/PDMS (MFMP) foam can enhance the stability and durability of its structure and capability. The obtained MFMP foam possesses the very low reduction (less than 10%) of compressive stress at a high strain of 60% after 200th compression cycles. More importantly, the MFMP foam also shows an ultrahigh absolute SE of 29088 dB cm 2 g −1 due to its excellent SE of 44.66 dB and ultralow density of 9.22 mg cm −3 . The retention rate of SE can be maintained over 85% under the different treatment of serve environment. This strategy offers a promising idea to construct the ultralight porous materials for highly efficient EMI shielding applications in damping and high humidity environment.
研究领域:
材料科学
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电子工程
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产品关联
DOI
高影响因子
Nano Energy
·
2020
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IF 16.602
Nannan Wang,Youbin Zheng,Yange Feng,Feng Zhou,Daoai Wang
Moisture in environment can severely decrease the output of the solid-solid triboelectric nanogenerators (TENGs) which usually hinders their further practical applications. To solve this problem, in this paper we fabricated a new type of biofilm materials based TENG, which can work stably in high humidity environment with high output performance by forming hydrogen bond with water molecules. In high humidity environment the hydroxyl-rich biomaterials, such as starch molecules, and water molecules could form hydrogen bonds spontaneously to fix water molecules on the surface, which allows water molecules to participate in triboelectric charging as a more electropositive material to obtain a higher output of TENG. Different from the traditional polymer materials based TENGs, the output of the starch films based TENG increases with the increase of the environmental humidity. The output current and voltage could increase from 6.2 μA to 110 V to 16.6 μA and 330 V with the ambient humidity increasing from 15% to 95%, respectively, which is about 12 times larger than that of the traditional nylon-11 based TENG in the humidity of 95%. It is an important supplement of TENG family and highly expand application scopes for energy harvesting and self-powered sensors in high humidity environment, especially in cloudy, foggy days or under water and sweat conditions.
研究领域:
能源材料
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2025
·
IF 17.1
Jing Wang,Zhaoyue Xia,Heng Yao,Hui Yang,Qilong Zhang
In this study, a high-performance and swell-resistant triboelectric nanogenerator (TENG) has been proposed, specifically designed for high-humidity environments to meet the challenges of swelling problem and performance degradation. The composite film was fabricated by combining self-aggregation crosslinking reactions for polyvinyl alcohol (PVA) through ammonium persulfate (APS) initiations and interface physicochemical structure regulations for polyacrylonitrile (PAN) support layer. The treatment of PAN films with sodium hydroxide (NaOH) and tannic acid (TA) significantly enhances their electron affinity and electrical properties. Furthermore, the film exhibits superior swelling resistance, mechanical strength, and triboelectric characteristics. Owing to higher positive surface potential and optimized interface modulation, the constructed TENG using 8 wt% PVA initiated by 1.25 wt% APS spined on modified PAN support layer (PA 8–1.25 NTP-TENG) presents excellent stability and performance, with the I SC density reaching 180.9 mA·m −2 , voltage of 1396 V, and power density of 89.66 W·m −2 . Practically, the TENG successfully powered electronic devices and generated signals through human movements, harvesting biomechanical energy. Additionally, a self-powered ethanol pervaporation dehydration detector was developed, showcasing excellent permeability selectivity and stable performance in high humidity and elevated ethanol concentrations. Notably, in the dehydration process, the concentration of ethanol after membrane treatment achieves exceeding 99.99 %. This work introduces a novel strategy for enhancing the electrical properties of TENGs, providing valuable insights into material interface regulation mechanisms during energy conversion.
研究领域:
材料科学
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能源转换技术
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2023
·
IF 2.8
Tieyan Li,Hang Yu,Jianguo Mi,Chunxi Li,Hong Meng,Junsu Jin
In this study, we prepared spherical MIL-160/PAA-NH 2 composites with high atmospheric water harvesting properties by dispersing MIL-160 in a highly hydrophilic porous polyacrylate (PAA-NH 2 ) matrix by in situ growth method. The effect of MOF loading on the crystal morphology, pore structure, and vapor adsorption/desorption properties was systematically investigated. The MOF loading of the composites can be as high as 65 wt%, along with a high water vapor adsorption capacity of 0.252 g/g at 15% of relative humidity, and can provide complete desorption under mild conditions. This work provides a new idea for efficient water harvesting at low humidity.
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
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2019
·
IF 6.019
Liangxin Zhu,Chong Chen,Yujuan Weng,Fumin Li,Qiang Lou
To improve the power conversion efficiency (PCE) and stability of inverted perovskite solar cells (PSCs) prepared in humid air (RH = 55%), a new zinc oxide (ZnO):TIPD composite film is inserted between PCBM layer and Ag electrode for the first time. Compared to the single PCBM layer, the formed PCBM/ZnO:TIPD electron transport layer (ETL) has better coverage on the perovskite layer and more effective charge extraction ability from the perovskite layer. The insertion of ZnO:TIPD film effectively suppress the charge recombination at perovskite/ETL interface. Besides, the PCBM/ZnO:TIPD layer has better ability to prevent moisture from penetrating into the perovskite layer than single PCBM film. For these reasons, the PCE and stability of the PSCs with the PCBM/ZnO:TIPD are significantly improved compared to the PSCs with single PCBM (or ZnO:TIPD) layer. The highest efficiency of the cell with PCBM/ZnO:TIPD ETL reaches (13.7 ± 0.4)% in ambient atmosphere, which is 1.20 times that of the PSCs with PCBM only.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhu Gao,Jiaxing Wang,Yaseen Muhammad,Peng Hu,Yang Hu,Zhe Chu,Zhongxing Zhao,Zhenxia Zhao
Competitive adsorption of volatile organic compounds (VOCs) under high humidity is a critical but challenging issue in the applications of metal–organic frameworks (MOFs). In this work, hydrophobic-shell structured NH 2 -MIL(Ti)-125@mesoporous carbon composite was designed to enhance selective adsorption towards VOCs under humid conditions via confined growth strategy. Ti-clusters were first anchored into pores of ordered mesoporous carbon (OMC), and then confined grown into NH 2 -MIL(Ti)-125 via ‘ship-in-the-bottle’ approach. Hydrophobic shell of OMC concurrently protected the adsorption sites on NH 2 -MIL(Ti)-125 from H 2 O occupation and enhanced affinity towards non-polar toluene. Moreover, the resulting composited supplied abundant diffusion channels for toluene thereby accelerated the mass transfer though mesopores (OMC) and micropores (MOFs). As expected, the hydrophobic-shell NH 2 -MIL(Ti)-125@OMC composite efficiently enhanced hydrophobic property and toluene adsorption affinity. It obtained a dramatical increase in toluene adsorption capacity (3.86 mmol/g at 0.001 P / P 0 ) about 7.4 times of NH 2 -MIL(Ti)-125, and a 29% decrease in water vapor adsorption capacity (0.30 g/g at 1 mbar), which much superior than many reported expensive adsorbents. In addition, the composite induced more confined micropores to mesopores interconnected structure in MIL(Ti)@OMC Ti , and hence facilitated toluene diffusion. The toluene rate constant of pseudo-second-order adsorption ( k a ) on the MIL(Ti)@OMC Ti was up to 0.12 g/(mmol∙min), which was 1.2–2.0 times higher than those of the MIL(Ti) species. Moreover, breakthrough curve indicated that MIL(Ti)@OMC Ti showed 1.5 times of toluene working capacity with faster diffusivity at 80% RH compared to pure NH 2 -MIL(Ti)-125, while the latter exhibited much lower value of Q w / Q e than that of the former. This work provides a novel composite strategy for hydrophobic MOFs construction, and deeper understanding for VOCs/H 2 O competitive adsorption on MOFs composites in large scale applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）