INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Han Dong,Pu Zhou,Fan Yang,Enhao Zhang,Yifan Liu,Yefei Tian,Hongye Yuan
The development of metal–organic framework (MOF)-based adsorbents with high uptake capacity and mild regeneration conditions represents a promising avenue for addressing environment-based issues. In this study, we present the successful synthesis of temperature-responsive composite aerogels comprising MOF-808 and poly(N-isopropylacrylamide) (PNIPAM), which forms interpenetrated networks with acrylamide (AM). The resulting thermally responsive PNIPAM/MOF-808 composite aerogels achieved an impressive maximum water capture exceeding 2267 wt % at room temperature, with reversible release observed above 32 °C due to the hydrophilicity–hydrophobicity transition of PNIPAM. Interestingly, the aerogels also exhibit an iodine (I2) capacity of 234 wt % based on the charge transfer mechanism. This study provides a novel strategy for the preparation of efficient and reusable porous adsorbent materials, and it also demonstrates broad application prospects in areas such as water resource management and waste reduction.
研究领域:
材料科学
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环境科学
·
化学工程
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2013
·
IF 3.172
Ge Liu,Dan Hu,Min Chen,Changchun Wang,Limin Wu
Multifunctional PNIPAM/Fe 3 O 4 –ZnS hybrid hollow spheres integrating magnetism, luminescence, and temperature responses into one single entity have been successfully fabricated via a facile method. First, the cross-linked Poly (N-isopropylacrylamide) (PNIPAM) hollow spheres were synthesized via a classical method, named one-pot “self-removing” process. Then, Fe 3 O 4 and ZnS nanoparticles were in situ precipitated on the surface of the PNIPAM hollow spheres. The PNIPAM/Fe 3 O 4 –ZnS hybrid hollow spheres exhibit magnetic property, which indicates the potential application in drug targeting. In addition, ZnS nanoparticles in the shell play an important role as a luminescent label for tracking the drug delivery. Meanwhile, the existence of PNIPAM provides a thermosensitive property. All these results indicate that the obtained composite can be expected to be used as a smart drug delivery material.
研究领域:
材料科学
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生物医学工程
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纳米技术
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Shuo Du,Xiaofu Guo,Jinlong Li,Mengmeng Sun,Yingjie Liu,Qing Ye,Jingtao Bi,Shizhao Wang,Fei Li,Jie Liu,Yeling Zheng,Yingying Zhao
The development of ionic liquids (ILs)-based extractants for the solvent extraction of rare earth elements (REEs) is of great importance but still faces challenges. Based on the molecular structure and thermodynamic characteristics of temperature-responsive ILs (TRILs), a design method for TRILs was developed with the COSMO-SAC solvation model and quantum chemical calculations. A novel dicarboxylate TRILs, 1,6-bis(carboxyethyl)-N,N,N’,N’-tetramethyl-1,6-hexanediamine bis(trifluoromethanesulfonyl)imide ([CM-TMHDA][Tf 2 N] 2 ) was successfully synthesized, along with dihydroxy TRILs 1,6-Bis(hydroxyethyl)-N,N,N’,N’-tetramethyl-1,6-hexanediaminium bis(trifluoromethanesulfonyl)imide ([HE-TMHDA][Tf 2 N] 2 ) and diester TRILs 1,6-Bis(ethyl acetate)-N,N,N’,N’-tetramethyl-1,6-hexanediaminium bis(trifluoromethanesulfonyl)imide ([EA-TMHDA][Tf 2 N] 2 ) reported in literatures. By combining experimental and molecular simulation analyses, the phase behavior of [CM-TMHDA][Tf 2 N] 2 and the effects of acids and inorganic salts on its phase behavior were systematically studied. Additionally, a temperature-controlled phase transition system composed of TRILs and aqueous solutions was developed for the extraction and separation of Nd(III) from aqueous solutions. The results indicated that the homogeneous extraction system constructed with TRILs reduced interfacial mass transfer resistance, significantly enhancing the extraction kinetics of Nd(III). Various experimental parameters were optimized, revealing that under the conditions of 80 °C for 30 min, the carboxylic functionalized IL achieved optimal extraction efficiency for Nd(III), reaching 56 %. After four cycles, the extraction performance of [CM-TMHDA][Tf 2 N] 2 maintained. This study provides new insights for improving the separation and extraction techniques of REEs, demonstrating substantial potential for applications in this field.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 139
·期 14
·51895
·
IF 3.125
Weihua Su,Yan Qin,Guihua Meng,Jianning Wu,Shengchao Yang,Lin Cui,Wenjuan Li,Zhiyong Liu,Xuhong Guo
Intelligent response carriers have been developed and widely used in agriculture to improve pesticide utilization. However, there are few tailored response carriers that are targeting the cotton aphid pest. Based on the temperature-dependent growth and reproduction of cotton aphids, we constructed a tailored temperature-responsive star-shaped polymer to achieve on-demand controlled release of imidacloprid (IMI) to more effectively kill cotton aphids. In this work, a series of star-shaped polymers based on β -cyclodextrin ( β -CD), 2-(2-methoxyethoxy)ethyl methacrylate (MEO 2 MA), and tert -butyl acrylate ( t BA) were synthesized via atom transfer radical polymerization (ATRP). Next, β -CD-PMEO 2 MA ( β -CD-P0) micelles were developed having different controlled release rates of IMI at different temperatures (14, 21, or 27°C) following the cotton aphid growth and reproduction cycle. At 21°C, the micelle underwent a phase transition from a solution state to a turbidity state. By inducing this structural change, release of IMI was increased to adapt to the reproduction of the cotton aphid population which is highest at 21–27°C. In vitro release experiments showed that 48% of IMI was released from β -CD-P0 after the phase transition temperature (PTT). An aqueous solution of the β -CD-P0 polymer micelle was stable at 4°C for at least 28 days. Therefore, this intelligent response release model has enormous potential as a novel carrier for various pesticides.
研究领域:
农业科学
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材料科学
✓ 已验证
DOI
高影响因子
Polymers
·
2019
·Vol. 11
·期 3
·524
·
IF 3.164
Yi Chen,Yueyun Zhou,Wenyong Liu,Hejie Pi,Guangsheng Zeng
In order to improve the performance of traditional sodium alginate (SA) hydrogels cross-linked by Ca2+ions to meet greater application demand, a strategy was designed to structure novel SA-based gels (named OP-PN gels) to achieve both stimulus responsiveness and improved mechanical strength. In this strategy, the SA chains are co-cross-linked by CaCl2and cationic octa-ammonium polyhedral oligomeric silsesquioxane (Oa-POSS) particles as the first network, and an organically cross-linked poly(N-isopropyl acrylamide) (PNIPA) network is introduced into the gels as the second network. Several main results are obtained from the synthesis and characterization of the gels. For OP-PN gels, their properties depend on the content of both uniformly dispersed Oa-POSS and PNIPA network directly. The increased Oa-POSS and PNIPA network content significantly improves both the strength and resilience of gels. Relatively, the increased Oa-POSS is greatly beneficial to the modulus of gels, and the increased PNIPA network is more favorable to advancing the tensile deformation of gels. The gels with hydrophilic PNIPA network exhibit better swelling ability and remarkable temperature responsiveness, and their volume phase transition temperature can be adjusted by altering the content of Oa-POSS. The deswelling rate of gels increases gradually with the increase of POSS content due to the hydrophobic Si–O skeleton of POSS. Moreover, the enhanced drug loading and sustained release ability of the target drug bovine serum albumin displays great potential for this hybrid gel in the biomedical field.Keywords:octa-ammonium POSS;sodium alginate;hydrogels;temperature responsiveness
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
PubMed
高影响因子
Scientific Reports
·
2017
·Vol. 7
·期 1
·1-10
·
IF 4.259
Yu Bing,Song Qianqian,Cong Hailin,Xu Xiaodan,Han Dongwei,Geng Zhongmin,Zhang Xiaoyan,Usman Muhammad
In this paper, a thermo- and pH-responsive microfiltration membrane was prepared based on three-dimensional (3D) inverse colloidal crystals (ICC). To manufacture the smart ICC membrane, the typical thermo-responsive N-isopropylacrylamide (NIPAM) and pH-responsive methacrylic acid (MAA) were polymerized inside silica colloidal crystals. The smart ICC membranes were characterized by SEM, IR and contact angle measurements. Moreover, the permeability of smart microfiltration membrane was carried out by the KCl diffusion tests. The result showed that effective diameter of the polymer ICC membrane can be reversible tuned by temperature and pH. Besides, the functional ICC membrane showed outstanding temperature- and pH-responsive gating property, which was applied to separate particles of different sizes. The savvy environment-responsive gating membranes have potential uses in filtration, separation, purification, sensor and other applications.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Wood Material Science & Engineering
·
2024
·
IF 2.2
Li Jin,Xin Ren,Fei Wang,Zhiwei Fan,Shuaibo Han,Yan Zhang,Hui Wang,Xinxing Wu,Fangli Sun
Disodium octoborate tetrahydrate (DOT) is a well-received and eco-friendly preservative. However, it is prone to leaching from wood in humid conditions or rainy seasons, causing problems such as decreased efficiency in resisting fungi and poor surface performance in surface finishing. To obtain enhanced leaching resistance and simultaneously achieve controlled release of DOT, a pH and temperature dual responsive poly (2-hydroxyethyl methacrylate/2-(Dimethylamino) ethyl methacrylate) (PDH) was prepared and optimized for in situ construction of DOT-loaded PDH (PDHD) in wood. Results showed that PDH displayed obvious pH and temperature-responsive swelling, and when loaded with DOT, the PDHD consequently released DOT in a pH and temperature-responsive way. Fourier transform infrared spectroscopy, Solid-13C NMR analysis and Dynamic mechanical analysis confirmed the copolymerization of 2-Hydroxyethyl methacrylate (HEMA) and 2-(Dimethylamino) ethyl methacrylate (DMAEMA), as well as the presence of crosslinked structure formed from hydrogen bond between the hydroxyl group of HEMA and the N,N-dimethylamino groups of DMAEMA. After that, the PDHD was in situ constructed in wood for controlled release of boron. During the water leaching test, the modified wood exhibited a boron fixation rate of 49.05% compared with 0.72% of the neat DOT-treated wood. Besides, it presented controlled release activity in response to pH and temperature. This work provides new approaches to the fixation of boron preservatives and notably realizes responsive releasing of boron compounds for long-term wood preservation.
研究领域:
材料科学
·
林学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2012
·
IF 2.103
Cheng Jiang,Qihua Wang,Tingmei Wang
Thermoresponsive poly(N-isopropylacrylamide) (PNIPAAm) was grafted onto the cotton fabric by atom transfer radical polymerization (ATRP). Introducing 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTS) onto the surface, the density of PNIPAAm chains can be adjusted because of the competitive reactions of (3-aminopropyl) triethoxysilane (APS) and PFDTS. With the appropriate ratio of APS and PFDTS, the cotton fabric can be switched from superhydrophilic to superhydrophobic by controlling temperature. The prepared cotton fabric may find application in functional textiles, soft and folding superhydrophobic materials.
研究领域:
材料科学
·
纺织工程
✓ 已验证
DOI
高影响因子
WATER RESEARCH
·
2024
·
IF 11.4
Hongzhi Liu,Zi Wang,Hesong Wang,Zihan Liu,Jiaxuan Yang,Han Zhang,Heng Liang,Langming Bai
To address the issues of scaling caused by heat and water evaporation in regard to circulating cooling water (CCW), TFC membrane filtration systems have been increasingly considered for terminal treatment processes because of their excellent separation performance. However, membrane biofouling phenomenon significantly hinders the widespread utilization of TFC membranes. In this study, to harness the thermal phenomenon of CCW and establish a stable and durable multifunctional antibiofouling layer, temperature-responsive Pnipam and the spectral antibacterial agent Ag were organically incorporated into commercially available TFC membranes. Biological experimental findings demonstrated that above the lower critical solution temperature (LCST), the contraction of Pnipam molecular chains facilitated the inactivation of bacteria by the antibacterial agent, resulting in an impressive sterilization efficiency of up to 99 %. XDLVO analysis revealed that below the LCST, the establishment of a hydration layer on the functional interface resulted in the creation of elevated energy barriers, effectively impeding bacterial adhesion to the membrane surface. Consequently, a high bacterial release rate of 98.4 % was achieved on the low-temperature surface. The alterations in the functional membrane surface conformation induced by temperature variations further amplified the separation between the pollutants and the membrane, creating an enhanced "elastic interface." This efficient and straightforward cleaning procedure mitigated the formation of irreversible fouling without compromising the integrity of the membrane surface. This study presents a deliberately engineered thermoresponsive antibiofouling membrane interface to address the issue of membrane fouling in membrane-based CCW treatment systems while shedding new light on the mechanisms of "inactivation" and "defense."
研究领域:
环境科学
·
材料科学
·
微生物学
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产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Kaiqiang Zhang,Yulin Shi,Liang Wu,Long Chen,Tingting Wei,Xin Jia,Zhang Chen,Manqiu Li,Yisheng Xu,Yu Wang,Yanfeng Gao,Xuhong Guo
A thermo and pH dual-responsive starch (TPDS) was successfully synthesized by etherification, in which butyl glycidyl ether (BGE) was used as the hydrophobic reagent followed by addition of 2-chloro-4, 6-diglycino-[1,3,5]-triazine (CDT) groups. The obtained materials were characterized by Fourier transform–infrared spectroscopy (FTIR), 1 H nuclear magnetic resonance ( 1 H NMR) and elemental analysis to confirm the structure and the average substitution degree of BGE and CDT on starch molecule. It was observed that the lower critical solution temperature (LCST) of the TPDS could be modulated from 31 °C to 47 °C by increasing pH of the solution. The effects of pH and the concentration of such materials on the energy-saving performance of TPDS which could be potentially used as smart windows were investigated by UV-vis-NIR spectrophotometry. The solar modulating ability (△T sol ) and the luminous transmittance (△T lum ) of the sample were 40.1% and 47.1% when 10 g/L TPDS was chosen at pH 3. The results indicate that TPDS exhibits excellent optical performance with a controllable LCST, which shows great potential for the application as a smart window.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RENEWABLE ENERGY
·
2021
·
IF 8.001
Feng Shen,Ye Li,Xiaoya Qin,Haixin Guo,Jialu Li,Jirui Yang,Yongzhen Ding
Formic acid (FA) is one of the most promising vectors for sustainable hydrogen energy and it can be synthesized from renewable biomass resources . In this work, a range of heteropolyacid derived temperature-responsive catalysts (Ch n H 4-n PMo 11 VO 40 , n=1–3) were prepared by modifying H 3 PMo 12 O 40 heteropolyacid with an oxidation site V 5+ and temperature-responsive monomer choline chloride (Ch + ), and used for the cascade conversion of biomass derived cellulose into FA via hydrolysis-oxidation in water. The ChH 3 PMo 11 VO 40 with a Ch/H ratio of 1/3 exhibited an outstanding catalytic performance to give a 49.5% yield of FA at 165 °C after 3 h reaction time. Catalytic activity of Ch n H 4-n PMo 11 VO 40 was found to be related to its amount of H + and V 5+ , while the recyclable ability of Ch n H 4-n PMo 11 VO 40 was found to be related to its amount of Ch + . The as-prepared catalyst could be perfectly recycled with a single decrease the temperature of reaction systems, and be reused four times with limit loss in catalytic activity. The developed temperature-responsive catalysts have both advantages of homogeneous catalyst and heterogeneous catalyst , which should have potential application in other reactions of lignocellulosic biomass valorization.
研究领域:
化学工程
·
可再生资源利用
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2017
·Vol. 23
·期 32
·7737-7747
·
IF 5.317
Lei Miao,Yuanyuan Tu,Yang Yang,Shudong Lin,Jiwen Hu,Min Zhang,Yue Li,Fei Li,Yangmiao Mo
Graphical Doubly responsive : A thermo- and pH-sensitive binary graft copolymer bearing anchoring side chains was synthesized and blended with commercial polysulfone to prepare thermo- and pH-responsive blended membranes, which exhibited robust, reversible, independent temperature- and pH-responsive water wettability and water permeability (see figure). A stimuli-responsive membrane exhibiting independent pH- and temperature-responsive behavior was fabricated from a blend of commercial polysulfone with a functional amphiphilic binary graft copolymer, namely, polysulfone- graft -(poly(isopropylacrylamide- co -acrylic acid)- random -poly(methyl acrylate)), denoted PSf- g -(P(NIPAAm- co -AA)- r -PMMA). Two graft copolymers with different lengths of P(NIPAAm- co -AA) side chains were designed and enriched on the membrane surface to serve as thermo- and pH-responsive on/off switches. The differences between the dual-responsive behaviors of the two kinds of polymer-blend membranes were studied by water-flux and contact-angle measurements. The PMMA side chains served to securely anchor the graft copolymers to the membrane substrate, and the blended membrane prepared from binary graft copolymer was more stable and exhibited more robust stimuli-responsive behavior than that prepared from mono-graft copolymer PSf- g -P(NIPAAm- co -AA).
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）