JOURNAL OF MEMBRANE SCIENCE
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2020
·
IF 7.183
Jingyuan Guan,Lin Fan,Ya-nan Liu,Benbing Shi,Jinqiu Yuan,Runnan Zhang,Xinda You,Mingrui He,Yanlei Su,Zhongyi Jiang
Nanofiltration membranes featuring excellent separation and antifouling performances are highly desired for applications such as water purification . In this study, inspired by the phenomenon of coordination-driven self-assembly and the structures of aquaporins in nature, an arginine (Arg)-Fe III complex was designed and incorporated into the polyamide layer during interfacial polymerization, endowing the resultant nanofiltration membranes with enhanced water permeance and prominent antifouling performance. Owing to the active amine groups, the Arg-Fe III complex could react with trimesoyl chloride (TMC) and thus act as the aqueous additive in company with piperazine (PIP), which improved the compatibility between the organic phase and aqueous phase. The interfacial channels between the Arg-Fe III complex and the polyamide matrix as well as the hydrogen bonds interaction between water and the Arg-Fe III complex facilitated the rapid water transfer. When the content of the Arg-Fe III complex reached 0.3 g/L, the water permeance was elevated significantly, twice than that of the pristine polyamide membrane. Meanwhile, the rejections for Na 2 SO 4 and dyes were close to those of the pristine polyamide membrane. Furthermore, the resultant membranes displayed exceptional antifouling performance. Introducing the metal-organic complex into the interfacial polymerization process proves an effective and promising attempt to fabricate membranes with high performance for water resource reclamation.
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2019
·
IF 3.683
Hui Yu,Qi-Zhi Zhong,Tian-Geng Liu,Wen-Ze Qiu,Bai-Heng Wu,Zhi-Kang Xu,Ling-Shu Wan
Deposition of dopamine and tannic acid has received great attention in the fields of surface and interface science and technology. The deposition behaviors of various metal–phenolic systems have been investigated, and it is generally accepted that at least one catechol group is essential to the formation of the coatings. Herein, we report a novel and effective surface-coating system based on the coordination complexes of FeIII ions with a natural product juglone that contains only one phenolic hydroxyl. We investigated the deposition behaviors of this novel system on various substrates. Microporous polypropylene membrane modified with juglone/FeIII coatings is superhydrophilic and underwater superoleophobic, showing high separation efficiency and good reusability for various oil/water emulsions. In addition, the modified membrane can adsorb anionic dyes and selectively remove them from dye mixtures with high efficiency. We further demonstrated that the coating is a result of the synergetic effect of juglone/FeIII coordination and FeIII hydrolysis. This work not only provides new insights into surface deposition systems but also expands the polyphenol family for surface coatings of multifunctional materials.
研究领域:
材料科学
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环境工程
·
界面化学
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Yuntong Ge,Wei Wang,Kai Li,Fan Xiao,Zhipeng Yu,Jing Gong,Hang Jin,Ang Li
Crude oil adhesion issues are widespread in the petroleum industry, leading to inefficient production and high maintenance costs. Developing efficient antifouling materials and investigating the microscopic adhesion mechanism are of substantial significance. In the present work, a superhydrophilic/underwater superoleophobic PAFC coating with excellent antifouling properties was constructed by the coordination-driven self-assembly of phytic acid (PA) and FeCl3 (FC). The atomic force microscope (AFM) droplet probe technique was employed to elucidate the underlying mechanism of the anti-oil-adhesion property of the PAFC coating. Results showed that the PAFC modification achieved the optimum effect at a molar ratio of 1:3 between PA and FeIII. Applying a (3-aminopropyl)triethoxysilane (APTES) interlayer can effectively improve the performance of the PAFC coating on silica substrates. AFM droplet probe experiments indicated that the adhesion force between submerged micrometer-sized oil droplets and PAFC-modified substrates was significantly weaker than that with the untreated substrate. Meanwhile, the adhesion forces between oil droplets and surfaces were inversely proportional to the contact angle of the oil in water and were enhanced by higher salinity, lower collision velocity, and stronger loading force. The oil injection and wall sticking tests also confirmed the effectiveness of the PAFC modification in resisting the adhesion of crude oil.
研究领域:
材料科学
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表面化学
·
石油工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COORDINATION CHEMISTRY
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2019
·
IF 1.685
Li-Zheng Cai,Wei Zhang,Zhao-Xia Zhu,Jing Ru,Min-Xia Yao
Three FeIII2LnIII2 tetranuclear heterometallic clusters, [H4LGd(H2O)Tp*Fe(CN)3]2·8H2O·2MeOH (1) and [H4LLn(MeOH)Tp*Fe(CN)3]2·6MeOH·2MeCN (Ln = Tb and Dy for 2 and 3, respectively, H6L = N,N′-(2,6-pyridine-dicarboxyl)-disalicylhydrazide, Tp* = hydridotris(3,5dimethylpyrazol-1-yl)-borate), were synthesized by use of the [(Tp*)Fe(CN)3]− unit as a metalloligand toward LnCl3 and H6L species. Structural analyses reveal that FeIII and LnIII ions in all complexes are connected to each other by one cyanide to form a heterobinuclear unit of [Ln(H4L)][(Tp*)Fe(CN)3], which is dimerized through Ln–N–C = O–Ln interaction. Magnetic susceptibility measurements show weak antiferromagnetic interactions between cyano-bridged FeIII and GdIII ions and amide-bridged GdIII ions are operative. Complex 1 displays the magnetocaloric effect with −ΔSmmax = 12.70 J·kg−1·K−1 at 4.0 K for ΔH = 7 T. No single-molecule magnetic properties are observed for 2 or 3 down to 1.8 K.
研究领域:
无机化学
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材料科学
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磁学
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Shuo Shi,Wentao Zhang,Xinyi Ren,Min Li,Jing Sun,Guoliang Li,Yutang Wang,Tianli Yue,Jianlong Wang
Deproteinization is a crucial step for the purification of polysaccharides from natural biomass. However, traditional deproteinization technologies often suffer from complicated operating processes and the usage of toxic chemical reagents. Herein, an advanced and universal deproteinization method based on dual-functional adsorbent consisted of preferential protein adsorption coating of tannic acid-Fe III (TA-Fe III ) and magnetic Fe 3 O 4 (Fe 3 O 4 @TA-Fe III , abbreviated as FTF NPs) was developed. The proposed FTF NPs showed remarkable efficiency to remove protein from Lycium barbarum L. polysaccharides (LBPs) with deproteinization ratio of 96%, higher than the typical Sevag method (85%). Detailed adsorption kinetics studies demonstrated deproteinization process reached equilibrium after 10 min, faster than other reported deproteinization adsorbents. Furthermore, FTF NPs are structurally and functionally nondestructive as regards LBPs without using organic reagents. Also, it exhibited widespread-use deproteinization performance to several common plant species. Therefore, the proposed nano-separation based on TA-Fe III complex is an advanced and universal tool to high-efficiently deproteinize plant polysaccharides.
研究领域:
生物化学
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植物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
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2022
·Vol. 51
·期 34
·13085-13093
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IF 4.569
Lijun Guo,Feifei Li,Jianxin Liu,Zehui Jia,Rui Li,Zhuobin Yu,Yawen Wang,Caimei Fan
The scaling relations between nitrogen adsorption and NHx destabilization are key challenges to the widespread adoption of the photocatalytic synthesis of ammonia. In this work, a FeII-rich MIL-101(Fe) (MIL-101(FeII/FeIII)) was synthesized using a one-step solvent thermal method with ethylene glycol (EG) as a reducing agent, which can break the scaling relationship by photoinduced FeII (high nitrogen adsorption ability) and FeIII (high NHz destabilization ability) cycling. XPS was used to detect the change in iron valence state in the MIL-101(FeII/FeIII) material. The photocatalytic nitrogen fixation efficiency of MIL-101(FeII/FeIII) under visible light without any sacrificial agent was 466.8 μmol h−1 g−1, five times that of MIL-101(Fe). After photocatalytic experiments, MIL-101(FeII/FeIII) retained an unchanged FeII/FeIII rate, indicating that this FeII/FeIII cycling can be maintained. DFT modeling of the FeII-rich MOF material showed that a FeII1 FeIII2 system has a higher N2 activation capacity than a FeIII3 system. The catalytic mechanism was further proved by in situ infrared spectra and N15 isotopic tracers. Therefore, the improvement of photocatalytic activity was mainly attributed to the change in the nitrogen adsorption capacity during the photoinduced FeII/FeIII cycling.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2022
·
IF 14.224
Yuchen Zhang,Peng Zhou,Rongfu Huang,Chenying Zhou,Yang Liu,Heng Zhang,Xiaowei Huo,Jian Zhao,Zhaokun Xiong,Bo Lai
The regeneration of Fe(II) is the rate-limiting step in the Fenton/Fenton-like chain reactions that seriously hinder their scientific progress towards practical application. In this study, we proposed iron boride (FeB) for the first time as a new material to sustainably decompose H 2 O 2 to generate hydroxyl radicals , which can non-selectively degrade a wide array of refractory organic pollutants . Fe(II) can be steadily released by the stepwise oxidation of FeB to stimulate Fenton reaction, meanwhile, B-B bonds as electron donors on the surface of FeB effectively promote the regeneration of Fe(II) from Fe(III) species and significantly accelerate the production of hydroxyl radicals. The low generation of toxic by-products and the high utilization rate of iron species validly avoid the secondary organic/metal pollution in the FeB/H 2 O 2 system. Therefore, FeB mediated Fenton oxidation provides a novel strategy to realize a green and long-lasting environmental remediation.
研究领域:
环境科学
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化学工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Huiqing Wu,Huazhen Sun,Weijie Hong,Long Mao,Yuejun Liu
Tannic acid–FeIII functionalized multiwall carbon nanotubes (TA-MWNTs) were successfully obtained through a simple and rapid procedure by forming a stable TA–FeIII complex coating on the MWNT surface. Hydrophilic TA-MWNTs can disperse well in the aqueous phase and help the formation of a polyamide (PA) thin film nanocomposite (TFN) membrane through interfacial polymerization. TA-MWNT concentration in the aqueous phase was adjusted to achieve the optimal water flux and salt rejection of the TFN membrane. The results reveal that, when 0.03% of TA-MWNTs are added, the optimized water flux of the TFN membrane reaches up to 31.4 L/m2h, 2.36 times of that of the neat PA membrane, along with a well-maintained Na2SO4 rejection. Furthermore, the as-prepared TFN membrane shows improved antifouling ability and good long-term stability. A significantly enhanced chlorine resistant capability of the TFN membrane is also presented, which can be ascribed to the radical capturing capability of phenol groups of TA as well as more oxidation-stable polyester bonds produced by the interaction between the phenol groups of TA and the acyl chloride groups of TMC. Assisted by TA-MWNTs, the TFN membrane is found to have prominent advantages over PA and MWNTs/PA TFN membranes.
研究领域:
材料科学
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环境工程
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化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2016
·Vol. 12
·期 39
·5477-5487
·
IF 8.315
Zhifang Ma,Mengchao Zhang,Xiaodan Jia,Jing Bai,Yudi Ruan,Chao Wang,Xuping Sun,Xiue Jiang
Local hypoxia in tumors, as well as the short lifetime and limited action region of 1 O 2 , are undesirable impediments for photodynamic therapy (PDT), leading to a greatly reduced effectiveness. To overcome these adversities, a mitochondria-targeting, H 2 O 2 -activatable, and O 2 -evolving PDT nanoplatform is developed based on Fe III -doped two-dimensional C 3 N 4 nanofusiform for highly selective and efficient cancer treatment. The ultrahigh surface area of 2D nanosheets enhances the photosensitizer (PS) loading capacity and the doping of Fe III leads to peroxidase mimetics with excellent catalytic performance towards H 2 O 2 in cancer cells to generate O 2 . As such tumor hypoxia can be overcome and the PDT efficacy is improved, whilst at the same time endowing the PDT theranostic agent with an effective T 1 -weighted in vivo magnetic resonance imaging (MRI) ability. Conjugation with a mitochondria-targeting agent could further increase the sensitivity of cancer cells to 1 O 2 by enhanced mitochondria dysfunction. In vitro and in vivo anticancer studies demonstrate an outstanding therapeutic effectiveness of the developed PDT agent, leading to almost complete destruction of mouse cervical tumor. This development offers an attractive theranostic agent for in vivo MRI and synergistic photodynamic therapy toward clinical applications.
研究领域:
生物医学工程
·
肿瘤学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2022
·
IF 11.357
Huimin Zhou,Ruobin Dai,Tianlin Wang,Zhiwei Wang
Tannic acid (TA)-FeIII nanofiltration (NF) membrane has been demonstrated to possess more favorable removal of trace organic contaminants (TrOCs) over the conventional polyamide NF membrane. However, the drawback of acid instability severely hinders the practical application of TA-FeIII NF membrane in the treatment of (weak) acidic wastewater containing TrOCs (e.g., pharmaceutical wastewater, surface water, and drinking water). Herein, we introduced the MIL-101(Cr) nanoparticle, a kind of metal–organic framework (MOF), into the TA-FeIII selective layer to enhance the membrane acid stability. The acid-tolerance parameter of MIL-101(Cr)-stabilized TA-FeIII membrane (TA-FeIII-MOF membrane, 12,000 ppm/s–1) was two orders of magnitude larger than that of the TA-FeIII membrane (50 ppm/s–1), and the TA-FeIII-MOF membrane can withstand acid treatment at pH = 4 for more than 30 days. Meanwhile, the TA-FeIII-MOF membrane displayed increased water permeance from 9.5 to 12.7 L/(m2·h·bar) after the MOF addition, without compromising the selectivity. The enhanced acid stability for the TA-FeIII-MOF membrane was ascribed to an intercoordination mechanism, where FeIII centers (from TA-FeIII complex) coordinated with −COOH groups (from terephthalic acid of MOF) and CrIII centers (from MOF) coordinated with −OH groups (from TA of TA-FeIII complex), which was verified by the density functional theory calculation. This study highlights a new approach for the development of a TA-FeIII-based NF membrane with markedly enhanced acid stability, which is important for its real application in wastewater treatment and water reuse.
研究领域:
环境科学
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材料科学
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化学工程
·
水处理技术
✓ 已验证
DOI
高影响因子
Catalysis Science & Technology
·
2017
·Vol. 7
·期 5
·1129-1140
·
IF 5.773
Mengjie Pu,Yongwen Ma,Jinquan Wan,Yan Wang,Jiumei Wang,Mark L. Brusseau
In this work, a novel and effective heterogeneous catalyst, the metal–organic framework MIL-53(Fe), has been synthesized for the purpose of activating persulfate (PS). The catalytic performance of MIL-53(Fe) activated under different vacuum conditions was investigated; the stability and reusability of the catalyst were evaluated, and the activation mechanism was also investigated. The results indicated that vacuum activation could cause variation of the FeII/FeIII relative amount ratio of the catalyst, and thus would change the catalytic activity of MIL-53(Fe), because FeII and FeIII CUS (coordinatively unsaturated metal sites) are alternative active sites. It was found that MIL-53(Fe)-2 exhibits good performance in PS activation and could be used for multiple cycles; an OG removal rate of 98% was obtained within 120 min (95.7% mineralization efficiency) and 94.3% was achieved in the fifth cycle. The mechanism of activation of PS by MIL-53(Fe) was also suggested, which involved a predominant heterogeneous reaction and an auxiliary homogeneous reaction. The findings of this study provide a new insight into the application of reactive metal–organic frameworks in activating persulfate for the degradation of environmental contaminants.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Jiangtao Dong,Aohui Han,Yanli Zhao,Haoming Li,Yue Yang,Bowen Yuan,Yishan Wang,Runqiang Liu,Xinming Yin,Xuezhong Du
Nanopesticides have been selected as one of the top 10 chemical innovations for enhancing the efficacy and safety of agrochemicals . Herein, smart, degradable, and eco-friendly metal−organic framework MIL-101(Fe III ) nanoherbicides coated with carboxymethyl cellulose-Ca II (CMC-Ca II ) cross-linking hydrogel-like networks are synthesized via a simple strategy. The coating of the CMC-Ca II hydrogel-like gatekeepers is oriented by the coordination unsaturated Fe III clusters on the surfaces of the MIL-101(Fe III ) nanocarriers to form a dense film network to prevent paraquat (PQ) leakage. Based on the stimuli factors (acid/basic pH, GSH, phosphates, and EDTA) of physiological and natural environments of target plants, the nanoherbicides are combined with five stimuli-responsive properties to attain the various controlled release of packaged PQ by the disassembly of the gatekeepers and/or the degradation of the MOF skeleton structure. More importantly, based on the stimuli-responsive controlled release mechanisms, the eco-friendly nanocarriers are ultimately degraded against bioaccumulation in plants or soil. The coating of natural CMC could promote the spreading of PQ owing to improvement of wettability for aqueous droplets of nanoherbicides on hydrophobic foliage. The PQ trapped in nanocarriers can effectively prevent PQ degradation, which showed that cumulative degradation rate is ca. 2.6 times lower than that of technical PQ under UV irradiation. The prepared nanoherbicides loaded with PQ show good control efficacy against weeds by controlling the release of PQ; good safety on seed germination (germination rate 97.32–99.67 %), seedling emergence (emergence rate 95.53–99.67 %), and are beneficial for the growth of wheat seedling (increase rate of plant height 1.89–6.97 % and 0.54–5.67 % after 7 and 15 days of seedling emergence, respectively) in the greenhouse; good biosafety for honeybees ( Apis mellifera L. ), which shows that lethal rates were 2.04 and 2.55 times lower than technical PQ for incubation 24 and 48 h, respectively. The nanoherbicides have potential applications in the field for PQ green agriculture.
研究领域:
农业科学
·
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
危险品化学品经营许可证（带存储）