ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Ting Du,Jing Wang,Tianshu Zhang,Liang Zhang,Chengyuan Yang,Tianli Yue,Jing Sun,Tao Li,Mingu Zhou,Jianlong Wang
Nondegradable heavy metals have caused great dangers to the environment and human health. Combining stimuli-responsive materials with conventional MOF-based adsorbents has been considered an effective method to generate intelligent adsorbents for superior control over the adsorption process. Herein, a smart MOF-based ratiometric fluorescent adsorbent was designed to accurately monitor the progression of the removal of copper ions with dual-emitting fluorescence signal. Unlike the traditional difunctional materials, this delicately designed platform overcomes the huge energy gap to achieve two functions simultaneously. This unconventional platform provides a reliable fluorescent response toward Cu2+ during the removing process, changing linearly related to the degree of the adsorption process, which holds extreme promise in effectively monitoring the adsorption process. The underlying relationship of the adsorption and fluorescence response process toward copper was investigated by density functional theory (DFT) calculations. In particular, because of the favorable ion binding affinity of ZIF-8 and self-calibrating effect of RhB, the as-prepared smart adsorbent demonstrates a superior adsorption performance of 608 mg g–1, broad response range (0.05–200 ppm, 2.07 × 10–7to 8.29 × 10–4 M), ultrahigh sensitivity (0.04 ppm, 1.91 × 10–7 M) toward Cu2+ and strong anti-interference ability. This smart adsorbent opens an intelligent pathway to promote substantial advancements in the fields of environmental monitoring and industrial waste management.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2020
·
IF 3.557
Ruiqi Li,Guoli Zhang,Jingfeng Wang,Junqing Li,Chunhong Zhang,Pengli Wang
Intelligent materials with controlled wettability have caused widespread concern in various sewage applications. In this study, a smart pH-responsive polyaniline (PANI) coating has been synthesized in one step in aqueous media and coated on materials in common use, such as polyester mesh, cotton fabric, and sponge. The PANI coatings can switch their superwettability response to ambient pH and be used in continuous separation of oil–water–oil systems which are frequently found in actual oil leakage accidents. Moreover, bidirectional emulsion separation (water-in-oil and oil-in-water) can be realized on such a coating material. The coated sponge can be used as an oil adsorbent for invertible capture and release by changing pH. Based on excellent antifouling and recyclability, as well as the prominent chemical/mechanical stability, PANI coatings can be applied in actual oily wastewater treatment systems. It is anticipated that the coating materials will show promise in many applications because of the cost-effective and environmentally friendly aqueous media preparation procedure.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Bing Qi,Bingjie Fan,Bo Xu,Man Zhou,Yuanyuan Yu,Li Cui,Qiang Wang,Ping Wang
In view of the frequent occurrence of oil-containing pollutant discharge events, many optimal strategies for oil-water separation were proposed. However, the large-scale application of these strategies is severely limited by the lack of environmental unfriendliness and intelligent response capability. To address these issues, we developed a thermo-responsive fabric with switchable wettability that can be applied for efficient oil-water separation by an eco-friendly enzymatic method . Briefly, 3-(trimethoxysilyl) propyl methacrylate (KH-570) and boron nitride (BN) nanosheets were introduced to the surfaces of cotton fabric, followed by enzymatic graft polymerization of N,N -dimethyl (methacryloylethyl) ammonium propane sulfonate (DMAPS) onto the fibers using horseradish peroxidase (HRP). Thanks to the switchable wettability of the composite layer on the yarn surfaces, oil and water can pass through the cotton fabric at the temperatures below and above 28 °C, respectively, realizing highly efficient oil-water separation. The resulting temperature-responsive textiles exhibit encouraging separation performance, and the separation efficiency, oil flux, and water flux reach as high as 95%, 542.57 L·h −1 m −2 , and 477.26 L·h −1 m −2 , respectively. Meanwhile, the cyclic separation capability, acid-alkali tolerance, and mechanical friction stability of the composite textiles are encouraging. The present work provides an alternative for construction of oil-water separation materials, which inspires further research on the smart oil-water separation strategies.
研究领域:
材料科学
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环境科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2023
·
IF 17.6
Hongtao Guo,Yuyang Shi,Fei Pan,Shuhuai Zheng,Xiaoli Chai,Yang Yang,Haojie Jiang,Xiao Wang,Lixin Li,Zhen Xiu,Jingli Wang,Wei Lu
The stretchable conductive materials with adjustable electromagnetic interference (EMI) shielding performance and other multifunctional integrated applications are remarkably desirable and challenging in flexible electronics. However, the existing stretchable materials often suffer from the decay of EMI shielding performance during the stretching process, which limits their practical applications. Meanwhile, it remains a great challenge to construct materials with ordered porous frameworks as integrated shielding devices. Incorporating porous structure will generate abundant interior surfaces/interfaces, facilitating multiple reflections of incident electromagnetic waves (EMWs). Herein, we employ ultrasound method to modify liquid metal (LM) with carbon nanotubes (CNTs), and further utilize an UV in-situ polymerization method to fabricate CNT@LM/polyacrylamide/gelatin (LMCPG) dual network hydrogel elastomer . The LMCPG hydrogel elastomer possesses high strength and durability, and its tensile strength reaches 117 kPa at 1033% strain owing to the high strength of the rigid network and the beneficial deformation ability of the flexible network. Deformable CNT@LM droplets elongate randomly during stretching process, which facilitates establishing more conductive paths. The EMI shielding capacity of the stretched elastomer can be controlled, achieving an intelligent on-off behavior, which exhibits a 211% increase at 200% strain in EMI shielding effectiveness (SE) compared with the undeformed state. Moreover, the LMCPG elastomer shows a significant triboelectric performance, which can provide power supply for flexible electronic devices, achieving an uninterrupted monitoring of the human body motion by devices. Therefore, as a flexible electronic material , it can offer a facile solution to achieve intelligent multifunctional integrated EMI shielding materials.
研究领域:
材料科学
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柔性电子
·
智能材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Bailang Zhang,Ting Wang,Mingjie Li,Minghao Mu,Zheng Wang,Yuwei Chen,Chaoxu Li
Biological nanofibrils not only are characteristic of many species of biomasses but also serve as a promising type of sustainable nanomaterials for various applications. However, their production has long relied on an invasive and energy-consuming mechanical shear. A noninvasive and versatile approach remains challenging to exfoliate different types of biomasses into nanofibrils. In this study, we showed a versatile and nonaggressive intercalative deprotonation agent of organic base, which could efficiently deprotonate various biomasses for energy-saving exfoliation and functionalization, including cellulose, chitin, and silk. Both carboxylic nanofibrils and nanofibrils with pristine chemical structures could be produced in high yields through manual shaking or sonication. By further grafting photoresponsive groups via transesterification, intelligent NFs were generated featuring ultraviolet-responsive fluorescence and hydrophilicity. These responsive fluorescence and actuation behaviors promised their potential as green encryption and anticounterfeiting nanomaterials.
研究领域:
材料科学
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生物化学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2025
·
IF 16
Leilei Chen,Hengao Yu,Jilan Yang,Jinzhuo Shi,Chun-he Li,Zijie Qu,Wendong Wang
Ferrofluids are stable colloidal dispersions of magnetic nanoparticles in carrier liquids. Their combination of magnetic and fluidic characteristics not only inspires fundamental inquiries into forms and functions of matter but also enables diverse applications ranging from sealants and coolants in mechanical devices to active components in smart materials and soft robots. Spurred by such fundamental and applied interests, a growing need for easy-to-synthesize, high-quality ferrofluid exists. Here, we report the facile synthesis and comprehensive characterization of a silicone oil-based ferrofluid that displays the characteristic surface instability of high-quality ferrofluids and demonstrate its functions in smart interfacial materials and soft robots. Silicone’s chemical immiscibility with polar solvents and its biological inertness, when coupled with magnetic responsiveness and fluidic deformability, enable the manipulation of solid particles, gas bubbles, simple and complex liquids, as well as micro-organisms. We envision that the silicone oil-based ferrofluid will find applications in diverse areas, including magnetic digital microfluidics, multifunctional materials, and small-scale robotics.
研究领域:
材料科学
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化学工程
·
机器人学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2024
·
IF 4.1
Fengshan Liu,Keao Liu,Chunhui Wang,Yang Xu
The physical damage of engineering materials is challenging to perceive, particularly when they occur with only a slight extent. To present the location of damage to engineering is still difficult to achieve. Mechanical responsive engineering materials are therefore highly desired. Herein, a type of composites comprised of carbon nanoparticles (CNP) and poly(vinyl chloride) (PVC) was prepared via a heating incubation process. Notably, we found that these composites were in a metastable state and exhibited a grinding-stimulated fluorescence enhancement performance. After grinding stimulation, a bright orange-yellow color emission appeared and the fluorescence intensity of the composites exhibited a 75-fold enhancement. It was noted that grinding had no effect on the fluorescence of CNP alone. The fluorescence enhancement may be due to the change in the surface environment of CNP, as grinding facilitates the entry of CNP into PVC. In addition, fluorescence enhancement was also observed in tightening screw experiments using commercialized PVC films, demonstrating the abrasive-stimulated fluorescence enhancement properties of this CNP/PVC. Such remarkable mechanical response property and interesting combination between CNP and PVC will provide avenue to promote the development of smart engineering materials and have considerable potentials in external force response and structure damage surveying.
研究领域:
材料科学
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工程学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2023
·
IF 5.2
Zi-Wen Zhou,Zhe-Ning Wu,Chun-Xian Cai,Ru-De Lin,Xiao-Qi Yu,Kun Li,Na Wang
Covalent Organic Frameworks (COFs) with uniform aperture size, high surface area and tunable structure have been proposed as a potential material in water treatment. In this work, we utilized methoxy based covalent organic frameworks (COF–OMe) at room temperature as a dual-role smart material. For one thing, it can respond to the pH of solutions by visual, colorimetric change. Due to the protonation effect of methoxy groups in its pore skeleton, the fluorescent intensity of COF–OMe went down and the color changed from yellow to black as the pH decreased reversibly. For another, the abundant pores and ordered conjugated structure endowed it with a large surface area and light absorption ability. Therefore, the light-triggered oxidase-mimic porous COF–OMe can be applied in the synergistic removal of organic pollutants with synergistic physical absorption and light degradation. The outstanding and sensitive response to pH, great removal efficiency and dual function made it applied in water treatment with great potential, achieving killing two birds with one stone.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2023
·
IF 17.6
Yinan Zhao,Qingtao Zeng,Changcheng Jiang,Xuejun Lai,Hongqiang Li,Zhengzhong Wu,Xingrong Zeng
It is of great importance but full of challenge to construct intelligent materials with self-powered, durable and high fire-safety to meet the requirements of the intelligent fire protection towards Internet of Things (IoT). In this work, phosphorous-containing ionic liquid (PIL)-based ionogels (PILGs) were fabricated with acrylamide, low melting point polyanionic polystyrene sulfonate sodium and polycationic polydiallyl dimethyl ammonium chloride via ultraviolet initiated polymerization. PILGs showed good ionic conductivity (1.33 S·m −1 ) and high ionic thermoelectric effect (1.31 mV·K −1 ), which endowed flammable materials with accurate temperature-sensing, sensitive fire-warning performance and outstanding flame retardancy . When being burned, PILGs triggered the fire-warning system at about 1 s and rapidly self-extinguished. Besides, due to the good thermostability and low volatility of PIL, PILGs displayed high durability in extreme environments. More importantly, PILGs were designed as thermoelectric capacitors and high output power galvanic cells , which could power fire-warning circuits and electronics. Our work provides new insights for the development and application of self-powered intelligent fire protection materials.
研究领域:
材料科学
·
物联网技术
·
能源材料
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 40
·2205160
·
IF 19.924
Zheng Cheng,Ruofeng Wang,Yishu Cao,Zhihao Cai,Zhiwei Zhang,Yi Huang
Intelligent microwave absorption (MA) materials possess the ability to dynamically change their microwave absorption performance, according to real-time requirements, and it is of great significance in future civil and military fields. For the first time, the reduced graphene oxide/VO 2 composite aerogels are developed with off/on switchable MA performance, and the switchable mechanism is originated from the unique phase change behavior of VO 2 . As temperature increases (>68 °C), the VO 2 displays the phase change from monoclinic to rutile phase, which accompanies with significant changes in aerogel's electrical conductivity as well as its permittivity, and consequently leads to off/on switchable MA performance. Particularly, two different off/on switch modes, “on to off” and “off to on”, can be separately realized by different composite aerogels as temperature increases, and this off/on switchable MA performance is also confirmed with good cycling stability. More importantly, during the off/on switch process, the maximum changes for the effective absorption bands (ΔEAB) and RL values (ΔRL) can be as high as 7.27 GHz and 49 dB, which exceeds most current reports. Besides, the RCS simulations on aircrafts have been performed and verified this intelligent MA performance, thus providing useful guidance for next-generation smart electromagnetic devices in various fields.
研究领域:
材料科学
·
电磁学
·
智能材料
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2024
·
IF 9.5
Li Dongping,Wang Ping,Li Yuanyuan,Yong Zhenzhong,Wu Kunjie,Zhang Yan,Wang Jin,Hu Dongmei
Wireless communication technology is indispensable in our daily lives, but it also results in serious electromagnetic radiation pollution. Hence, developing smart electromagnetic interference shielding materials with adjustable electromagnetic wave (EMW) responses holds significant promise for future electromagnetic shielding devices. In this study, we propose an electromagnetic shielding switch (ESS) characterized by tunable electromagnetic shielding performance achieved by fabricating a three-dimensional (3D) carbon nanotube-based spacer fabric (CNT-SF) and modifying CNT-SF with chemical vapor deposition (CCNT-SF). The CCNT-SF displays direction-dependent electrical conductivity by manipulating the warp and weft density, measuring 128 S/m transversely and 447 S/m vertically. This characteristic allows the CCNT-SF to transmit or shield EMW by adjusting the angle of EMW incidence through fabric rotation, resulting in anisotropic electromagnetic shielding performance (33 dB transversely and 87 dB vertically). This feature enables switchable shielding with an on/off ratio of 2.64. Furthermore, the unique 3D structure confers excellent mechanical properties on the fabric, with compressive strength reaching 120 kPa. As a flexible, lightweight, and mechanically robust ESS, the CCNT-SF holds promising prospects for mitigating the challenges of increasingly severe and intricate electromagnetic environments.
研究领域:
材料科学
·
电磁学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Ran Wei,Bo Yang,Chao He,Lunqiang Jin,Xiang Zhang,Changsheng Zhao
Superhydrophilic/superhydrophobic surfaces with unique superiority have been applied for oil-water separation over a long time. Facing the increasingly complicated requirements in diverse separation fields, developing intelligent surfaces with switchable superhydrophilic/superhydrophobic properties are highly needed. In this work, versatile and robust poly(ionic liquid) (PIL) coatings were designed and a series of intelligent materials with switchable superwettabilities were generated for high-efficient oil-water separation. The PIL coatings were obtained by polymerization of PIL monomer on the roughened GO sheets, for which were realized by the immobilization of Fe 3 O 4 nanoparticles. Three materials with different structures (cotton fabric (CF), nylon fabric (NF) and cotton ball (CB)) were chosen as the coating substrates. After “dip-coating” process, the PIL coated materials (PCMs) exhibited switchable superhydrophilic/superhydrophobic performances due to the anion-responsive behavior of PIL and the roughness enhanced effect. Thus, the PCMs showed high-efficient separation performances upon multiple oil-water separation cycles, and the separation could be switched between “water-removing” and “oil-removing” by anion exchange. Meanwhile, the PIL@CF had high permeate fluxes, which could separate layered water-oil mixtures rapidly under gravity; the PIL@NF had the highest separation efficiency; the PIL@CB possessed great potential to be used as efficient absorbents for water/oil adsorption and recycle.
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）