JOURNAL OF HAZARDOUS MATERIALS
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2020
·
IF 9.038
Nan Zhao,Kunyuan Liu,Bofang Yan,Ling Zhu,Chuanfang Zhao,Jia Gao,Jujun Ruan,Weihua Zhang,Rongliang Qiu
In the last years, the synthesis and applications of biochar/Fe composites have been extensively studied, but only few papers have systematically evaluated their removal performances. Herein, we successfully synthesized and structurally characterized Fe 0 , Fe 3 C, and Fe 3 O 4 -coated biochars (BCs) for the removal of chlortetracycline hydrochloride (CH). Evaluation of their removal rate and affinity revealed that Fe 0 @BC could achieve better and faster CH removal and degradation than Fe 3 C@BC and Fe 3 O 4 @BC. The removal rate was controlled by the O–Fe content and solution pH after the reaction. The CH adsorption occurred on the O C groups of Fe 0 @BC and the O C and O Fe groups of Fe 3 C@BC and Fe 3 O 4 @BC. Electron paramagnetic resonance analysis and radical quenching experiments indicated that HO and 1 O 2 / O 2 − were mainly responsible for CH degradation by biochar/Fe composites. Additional parameters, such as effects of initial concentrations and coexisting anions, regeneration capacity, cost and actual wastewater treatment were also explored. Principal component analysis was applied for a comprehensive and quantitative assessment of the three materials, indicating Fe 0 @BC is the most beneficial functional material for CH removal.
研究领域:
环境科学
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材料科学
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化学工程
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分析化学
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产品关联
DOI
PubMed
高影响因子
TOXICOLOGY
·
2017
·
IF 3.582
Chuanyang Su,Zixuan Liu,Yawen Wang,Yuxin Wang,Erqun Song,Yang Song
The activation of nuclear factor erythroid 2-related factor 2 (Nrf2) is the most important cellular defense mechanisms against oxidative attack. BTB and CNC homology-1 (Bach1), like Kelch-like ECH-associated protein 1 (Keap1), is one of a negative regulator of Nrf2 that control antioxidant response elements (ARE)-dependent gene expressions. In the current study, we found that quinones show greater capacity than hydroquinones in nuclear Bach1 export, as well as ubiquitin-dependent Bach1 degradation in our experimental time frame. Consistently, quinones are easier than hydroquinones in Nrf2 activation and ARE-driven antioxidant protein expressions. Considering the redox cycling potential of quinone-hydroquinone couple, we investigated the effect of transit metal oxidation on the regulation of Nrf2 activity. As shown, Fe 3+ enhanced hydroquinone-induced Nrf2 activation and ARE-driven gene expressions, suggesting quinones rather than hydroquinone activate Nrf2 through Bach1 arylation. Taking together, our investigation illustrated that the electrophilic character of quinones ensure their conjugation with Bach1, which is important for the downregulation of Bach1 and the upregulation of Nrf2 signaling.
研究领域:
生物化学
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分子生物学
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细胞信号传导
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氧化应激
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产品关联
DOI
PubMed
高影响因子
TALANTA
·
2022
·
IF 6.556
Miaosen Zhang,Shan He,Wei Pang,Wei Wei,Feng Zhou,Xiaoyu Wu,Hang Qi,Xuexin Duan,Yanyan Wang
Currently, researches on nanomaterials have been restricted by slow and multistep synthesis procedures. Herein, we demonstrate an ultrafast, one step method of purification and delivery of quantum dots into living cells, actuated by the acoustic streaming (AS) produced through a gigahertz resonator. Results demonstrate that the impurities in the carbon dots (CDs) can be extracted immediately aided by the acoustic forcing, with extra high purification efficiency of 93%. The system can also efficiently deliver the CDs into cells, showing excellent nucleus and mitochondria uptake under 3 min of AS treatment, and making the organelles of cells to be recorded more easily and simultaneously. More importantly, the AS is found to further accelerate the bioreaction inside the cells, thus realizes the enhanced biosensing of Fe 3+ in single living cells. This work develops a novel type of multifunctional method for effective purification, intracellular delivery and biosensing of nanomaterials, inspiring the biological/medical nanotechnology researches at subcellular level.
研究领域:
纳米技术
·
生物成像
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生物传感
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细胞生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2015
·Vol. 133
·期 1
·
IF 1.768
BeiXing Li,Lei Guan,Kai Wang,DaXia Zhang,WeiChang Wang,Feng Liu
A model chlorpyrifos microcapsule was prepared using coordination assembly between Fe 3+ and tannic acid (TA). The influence of independent variables such as the dropping rate of TA ( X 1 ) and Fe 3+ ( X 3 ), the concentration of TA ( X 2 ) and Fe 3+ ( X 4 ), and the reaction temperature ( X 5 ) on the encapsulation efficiency ( R 1 ) and release characteristics ( R 2 ) of the microcapsule had been investigated, based on a central composite design with five factors and five levels. The results showed that the main factors influencing R 1 and R 2 were X 4 and X 2 , then the interaction between X 2 and X 4 , followed by X 5 and X 3 . The optimal formula mainly based on higher R 1 and lower R 2 were determined and then tested. The optimized conditions led to an encapsulation efficiency and cumulative release proportion of 97.12% ± 0.72% and 40.07% ± 0.53%, along with the average relative errors of predicted values being 1.78% and −1.60%, respectively. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 132 , 42865.
研究领域:
材料科学
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化学工程
·
药学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Qian Wang,Xinglin Li,Shasha Guo,Hengyang Mao,Xiaoshan Meng,Taoli Huhe,Zhengzhong Zhou
Industrial wastewater is complex, containing a significant amount of heavy metals and organics, which needs complicated traditional treatment processes. Ultrafiltration (UF) membranes process can remove various organic pollutants, but exhibit no removal capacity for heavy metal. In this work, we directly blended tannic acid (TA) with polyvinylidene fluoride (PVDF) to fabricate membranes, based on the chelating ability. TA not only improves heavy metal adsorption properties to the membrane but also enhances its acid resistance. The PVDF/TA membrane maintained over 99 % remove rate to Fe 3+ in five adsorption–desorption tests and also exhibited effective rejection of bovine serum albumin after the cycling test. The PVDF/TA membrane achieved efficient treating processing of oil and Fe 3+ mixed solutions, with 100 % rejection for oil and over 99 % for Fe 3+ . In this study, the PVDF/TA membranes presented tremendous potential for application in complex wastewater treatment.
研究领域:
环境工程
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材料科学
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水处理
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 18
·7559-7570
·
IF 4.5
Qin Minghao,Zong Siyu,Zhang Peng,Li Jiyang
The environmentally friendly luminescent sensing materials are desired for detection of heavy metal ions. Herein, two kinds of fluorescent nanomaterials, carbon dots (CDs-1) and N-doped carbon dots (CDs-2) were designed and synthesized as effectively sensors for simultaneous detection of Fe 3+ and Cu 2+ ions. A simple one-step hydrothermal synthesis was adopted by using cost-effective precursor humic acid (HA) as a carbon source and ammonium hydroxide as a nitrogen source. Photoluminescence (PL) spectra and TEM images reveal the distinct structure and property of these two CDs, in which CDs-1 display blue fluorescence with the average diameter of about 1.73 nm, while CDs-2 possess larger size (av. 2.41 nm) because of the larger conjugated structures and exhibit green fluorescence. The successful doping of N on the surface of CDs-2 was confirmed by characterizations of X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR), which endows CDs-2 improved detection performance than that of CDs-1. CDs-2 could selectively and sensitively detect iron(III) and copper(II) ions, and the limit of detection (LOD) can reach 73 nM and 61 nM with a liner range from 0 to 20 μM and 0 to 50 μM, respectively. The fluorescence static quenching effect and the formation of the ground-state complex may explain the quenching mechanism of CDs-2 in this process. This work demonstrates the more possibilities of applying the low-cost waste and developing high-efficiency CDs-based luminescent sensors.
研究领域:
材料科学
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环境科学
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分析化学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
·
IF 4.539
Ran Wang,Na Li,Bing Jiang,Jinghong Li,Wei Hong,Tifeng Jiao
Triple-network hydrogels have different network structures and diversified cross-linking methods, which make it expected to become a widely used soft material. In this work, the freezing method is used to form a hydrogen bond cross-linked physical network between the Agar molecular chains, and then acrylic acid (AAc) and a chemical cross-linking agent form a chemical cross-linked network using free radical polymerization. The polyvinyl alcohol (PVA) molecules in the hydrogel can increase the winding degree of the molecular chain and form the PVA semi-crystalline region. In addition, Fe 3+ in the system is coordinated and cross-linked with the carboxyl group on the PAAc molecular chain, and the addition of carbon nanotubes (CNTs) increases the mechanical properties and stability of the composite hydrogel. The prepared Agar/PAAc-Fe 3+ /PVA/CNTs composite hydrogel shows good mechanical properties through the coexistence of chemical covalent bonds and dynamic reversible bonds. Furthermore, the Agar/PAMAAc-Fe 3+ /PVA/CNTs triple-network hydrogel based on agar/polyacrylamide acrylic acid/polyvinyl alcohol (Agar/PAMAAc/PVA) was also prepared. Among them, acrylamide (AM) monomer and AAc monomer form a chemical cross-linking network through radical polymerization. The prepared Agar/PAMAAc-Fe 3+ /PVA/CNTs hydrogel can realize rapid self-recovery after 5 consecutive and discontinuous compressions, respectively. This work provides a new idea for the preparation of multifunctional hydrogels with good thermal stability, mechanical properties and self-recovery.
研究领域:
材料科学
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高分子化学
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复合材料
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Juan Long,Zhiqiang Li,Tuhua Zhong
Surface functionalization of cellulose nanofibrils (CNF) is crucial for expanding their practical application. However, most functionalization processes are complicated and laborious. Herein, this work presents a facile surface engineering strategy to create a range of functionalized CNF via thiol-ene click reaction. Initially, clickable CNF was produced by grafting a compound with both carboxylate- and norbornene groups onto bamboo cellulose via norbornene-dicarboxylic anhydride esterification followed by homogenization. The introduction of negatively charged carboxylates facilitated nanofibrillation, resulting in CNF with a diameter of 3 nm and an aspect ratio of up to 600. The introduction of norbornenes enabled diverse functionalization of CNF through click reaction. Subsequently, hexadecanethiol successfully clicked with norbornene-grafting CNF, enhancing its hydrophobicity and dispersion in organic solvents. 7-mercapto-4-methyl coumarin was also able to click with norbornene-grafting CNF, yielding fluorescence-labeled CNF while maintaining excellent aqueous dispersibility. The fluorescence-labeled CNF was demonstrated to be utilized as an eco-friendly sensor for the detection of Fe 3+ ions. Additionally, it could be converted into fluorescent films or intelligent inks suitable for anti-counterfeiting purposes. This study demonstrates that the proposed surface engineering strategy provides an effective approach for producing clickable CNF and fabricating cellulosic materials with diverse functionalities that meet the demands of various applications.
研究领域:
材料科学
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纳米技术
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化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Guoqing Wang,Jianfei Wang,Xinping Wang,Yuanyuan Meng,Xiangzhen Feng,Gaoli Liu,Dong-An Wang,Changjiang Fan
Uncontrolled traumatic hemorrhage is a leading cause of preventable death. As two main forms of hemostatic materials, however, both sponges and hydrogel adhesives usually fail to control massive hemorrhage due to their respective shortcomings. Hemostatic sponge shows weak tissue adhesion, while the gelation process of hydrogel makes it difficult to seal high-pressure bleeding wounds. There is an urgent need to develop next-generation hemostats combining the advantages of sponges and hydrogel adhesives. Herein, a general methodology to prepare novel Fe 3+ -laden porous material (Fe 3+ @GCS) for rapid hemostasis of the high-pressure and severe hemorrhages is proposed, which is fabricated by loading ferric chloride with ethanol into the catechol-modified carboxylated gelatin sponge (GCS). Notably, porous Fe 3+ @GCS can undergo water-triggered rapid transformation to robust-adhesive hydrogels. The sealing strength of Fe 3+ @GCS on wet tissues reaches an astonishing ≈600 mm Hg. Rapid water uptake of Fe 3+ @GCS around wound not only concentrates blood components but also excludes interfacial water, facilitating blood clotting and wound sealing with the in situ formed sticky hydrogel. Fe 3+ @GCS can efficiently stop the high-pressure hemorrhaging from traumatic injuries of arteries and hearts in rats and pigs, respectively, via a simple and short-time pressing. Furthermore, the wound sealing by Fe 3+ @GCS promotes wound repair and healing.
研究领域:
生物材料
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止血
·
组织工程
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生物医学工程
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产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2022
·
IF 5.141
Rui Wang,Zunli Mo,Hebing Pei,Simin He,Hui Zheng,Wanjing Liu,Xuening Jin,Xuejiao Zhang,Nijuan Liu,Ruibin Guo
Sensors used to detect Fe 3+ and Cys are generally a single method. In this work, two methods of fluorescence and electrochemistry are innovatively combined to detect Fe 3+ and Cys, and the obtained Lod is basically the same. Carbon quantum dots (CQDs) with blue fluorescence were successfully prepared by hydrothermal methods using tryptophan (Trp) as carbon source, which can be used for fluorescence and electrochemical dual-channel probe quickly detecting iron ion (Fe 3+ ) and cysteine (Cys). A series of studies have been carried out on its morphology, chemical structure, and optical properties through TEM, XRD, FT-IR, XPS, UV–vis absorption spectrum, and photoluminescence spectra. And the quantum yield of CQDs was up to 52.64%. It was also analyzed in the real sample, demonstrating the feasibility and reliability of detecting Fe 3+ and Cys in the real sample. Furthermore, CQDs can also be used as fluorescent ink for information anti-counterfeiting due to their excellent fluorescent properties.
研究领域:
分析化学
·
材料科学
·
纳米技术
·
生物化学
✓ 已验证
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2023
·
IF 4
Zhang Xue-Feng,Chang Tian-Long,Guo Na,Jia Guo-Liang,Li Xiao-Bing,Zhao Zhao-Ye,Wang Hui,Wang Jun-Chuan,Wu Xiang-Feng,Pan Cheng-Si,Liu Lei,Yang Lin-Lin
Fe-based MOFs (Fe-MOFs) are excellent photocatalysts and have synergy well with Fenton reagents relative to other MOFs. In this work, a series of uniformly covered NH 2 -Fe-MIL-88B@TpPa-1-COF composites were synthesized using an in-situ anchoring growth strategy, which used F127 as functional molecule to decorate NH 2 -Fe-MIL-88B nanoparticles to eliminate their surface electrostatic repulsion with Tp molecules during the subsequent coating procedure. Meanwhile, the -NH 2 groups in the skeleton of NH 2 -Fe-MIL-88B could also be used as anchors to covalently connect TpPa-1-COF shell and migration channels for effective charge transfer. This uniformly covered core–shell structure would endow these composites with much more contact area and imine bond linkage between the Fe-MOFs core and COFs shell. Compared with the random packing structure, the uniformly covered Fe-MOF@COF-3 composite possessed a higher proportion of Fe 2+ to Fe 3+ . As a result, the optimized Fe-MOF@COF-3 catalyst could achieve the highest photo-Fenton degradation efficiency of 93.9% for tetracycline hydrochloride (TC⋅HCl), which was much higher than 54.8% of pure NH 2 -Fe-MIL-88B. In addition, the uniform TpPa-1-COF shell could further effectively enhance the stability of NH 2 -Fe-MIL-88B by protecting Fe ions from leaching, and the toxicity of the water samples treated with our photo-Fenton degradation process declined obviously. All these merits will endow Fe-MOF@COF-3 photo-Fenton catalyst great potential application value as in the field of environmental governance.
研究领域:
材料科学
·
环境科学
·
催化
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Weigao Han,Fang Dong,Weiliang Han,Xiaosheng Huang,Zhicheng Tang
The activation of oxygen species is always a challenging problem in the oxidative dehydrogenation (ODH) of 1-butene with CO 2 . The oxygen species play an important role in improving the conversion, yield, selectivity, and stability of FeAlO x -based catalysts. In this paper, the framework-confined (FC) strategy was used to active the oxygen species. The changed crystalline phase from Fe 2 O 3 to FeAlO 4 illustrated the introduction of Fe species destroyed the Al 2 O 3 lattice and more active oxygen species were released. Compared with the WI-Fe 2 O 3 /Al 2 O 3 samples, the ratio of active lattice oxygen was increased from 0.03 to 0.1 and the ratio of Fe 3+ was also increased from 0.63 to 0.76 in the FC-FeAlO x samples. After doping with other metal species, the ratio of active lattice oxygen was further increased. The 1-butene conversion could reach 80 % and the 1, 3-Butadiene selectivity could reach 33 % over the FC-FeCrAlO x samples. Besides this, the FC-FeCrAlO x samples showed an outstanding thermal stability, which might be caused that Cr species could reduce the coke formation. The FC-FeCaAlO x samples had a higher utilization rate of CO 2 , which might be caused that Ca species could improve the basicity of the catalyst.
研究领域:
催化
·
化学工程
·
材料科学
✓ 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）