JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 9
·097508
·
IF 4.386
Xiaomin Guo,Pinghua Chen,Hualin Jiang,Xiaoqiu Tang,Yiping Huang,Guanghui Wu,Jian Zhang
Due to the strong toxicity of heavy metal ions to public health and the environment, it is a great challenge to develop a method for ultra sensitive capture and determination of heavy metal ions effectively. Herein, a novel heterostructure composite (MIL-53(Fe)/Ag2CrO4, named MA(1:x)) was prepared by a simple method successfully. MA(1:x) modified GCE was applied to detect heavy metals ions simultaneously. Significantly, the designed MA(1:1)/GCE sensors performed outstanding detection performances. The wide ranges of 7.49 ∼ 320.00 μmol l−1 and 7.49 ∼ 320.04 μmol l−1 are obtained for Pb(II) and Cu(II) ions, respectively. The LOD of the MA(1:1)/GCE sensor was determined to be 27.40 nmol l−1 (5.68 ppb) for Pb(II) and 86.96 nmol l−1 (5.52 ppb) for Cu(II) ion simultaneously, which are lower than the allowable level of drinking water stipulated by the World Health Organization (WHO). Possible detection mechanism by the MA(1:1)/GCE was discussed. The MA(1:1)/GCE was successfully applied to monitor heavy metal ions locate in tap and river water. The recoveries are in the range of 93.86%–104.4%, which further proves the potential in analyzing real samples. Moreover, the MA(1:1)/GCE also showed excellent stability, selectivity, reproducibility. A novel method was provided to construct sensitive sensors for simultaneous analysis of different metal ions.
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
Acta Biomaterialia
·
2022
·
IF 10.633
Longyi Nan,Jie Liu,Chao Liu,Peng Quan,Jianpeng Guo,Liang Fang
Pressure-sensitive adhesives are critical to the product's safety, efficacy, and quality in transdermal drug delivery systems. However, many defects of transdermal patches ( e.g. , insufficient adhesion, patch displacement, and “dark ring” phenomenon) remain. Herein, the N -[tris(hydroxymethyl)methyl]acrylamide (NAT)-modified acrylic pressure-sensitive adhesive coordinated with Fe(III) (AA-NAT/Fe 3+ ) was creatively proposed. Results demonstrated that the adhesiveness and cohesiveness of the optimized AA-NAT/Fe 3+ were higher by 1.8- and 9.7-fold, respectively, than those of commercially available DURO-TAK® 87-4098 due to the hydrogen bonding interaction of NAT-skin interface and coordination of NAT-Fe 3+ . Moreover, compared with that of DURO-TAK® 87-4098, the adhesion time of AA-NAT/Fe 3+ on the human forearm was remarkably prolonged, and no “dark ring” phenomenon was observed for AA-NAT/Fe 3+ after removal. After clonidine (CLO) was loaded into AA-NAT/Fe 3+ , controlled drug release and a drug transdermal behavior were endowed for CLO@AA-NAT/Fe 3+ in vitro and in vivo . AA-NAT/Fe 3+ still maintained superiority in adhesion and cohesion properties after CLO loading. These observations would contribute to the development of pressure-sensitive adhesives with outstanding adhesion and cohesion for transdermal patches. Statement of significance This N -[tris(hydroxymethyl)methyl]acrylamide-modified acrylic pressure-sensitive adhesive coordinated with Fe(III) has enhanced adhesion and cohesion properties, which provide a simple but effective strategy to solve the problems ( e.g. , insufficient adhesion, patch displacement, and “dark ring” phenomenon) in existing transdermal patches.
研究领域:
材料科学
·
药剂学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2020
·
IF 7.246
Kunlun Yang,Cheng Li,Xiaomin Wang,Yuanli Liu,Yizhou Li,Chuchen Zhou,Zheni Wang,Jiasheng Zhou,Zhen Cao,Xinhua Xu
In this work, the surface properties, functional groups and stability of Fe–Mn bimetal composite (FMBC) was modified through sintering to improve the weaknesses of pristine FMBC, such as poor separation performance, high amount of dissolved Fe and Mn, and easy phase transformation. Characterization analysis indicated that 2-line ferrihydrite in sintered FMBC (SFMC) gradually transformed into hematite with the phase-transition temperature of 450 °C. With the increasing sintering temperature and time, the dehydroxylation reaction enhanced and gradually became irreversible, while the BET surface area and porosity of SFMC firstly increased and then decreased, resulting in the initial increase and then sharp decrease of the amount of exposed hydroxyl groups on SFMC. The sintering treatment greatly improved the separation performance and stability of SFMC. 350 °C and 2 h were determined as the optimal sintering conditions of SFMC in this study and the calculated maximum adsorption capacity of optimal SFMC reached up to 95 mg/g. Freundlich model and pseudo-second-order kinetics model can describe the Sb(V) adsorption data well. As compared to pristine FMBC, optimal SFMC presented larger BET surface area and porosity, better separation performance and stability, lower dissolved Fe and Mn amount, larger cyclic adsorption efficiency and enough ability for Sb(V) removal in real textile wastewater. Furthermore, the inner sphere complexation between Sb(OH) 6 - and exposed hydroxyl groups played a key role in adsorption. Additionally, the NaCl + NaOH elution exhibited greater Sb(V) desorption performance and effectively retarded the phase transformation of SFMC than NaOH solution.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
ELECTROANALYSIS
·
2023
·Vol. 36
·期 2
·e202300237
·
IF 3
Toleshi Teshome,Shimeles Addisu Kitte,Abera Gure,Guta Gonfa
The co-precipitation approach was employed in this study to create Fe doped ZnO (Fe-ZnO) nanoparticles (NPs). To characterize the synthesized NPs, Ultra violet-Visible (UV-Vis) spectroscopy, X-ray diffraction (XRD), fourier transform infrared (FT-IR), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) were used. Here, a novel electrochemical approach for the detection of tryptophan (Trp) using a glassy carbon electrode modified with Fe-ZnO NPs (Fe-ZnO/GCE) is demonstrated. The research findings revealed that Fe-ZnO/GCE enhanced the electron transfer rate of Trp oxidation. The sensitivity of Trp detection using Fe-ZnO/GCE in phosphate buffer solution (PBS) at pH 64.0 was significantly improved compared to bare GCE due to the electrocatalytic activity of Fe-ZnO NPs. Fe-ZnO/GCE exhibited a linear response with Trp concentrations ranging from 0.1 to 150 μM with the limit of detection (LOD) is 0.089 μM (3σ /m ) and limit of quantification (LOQ) about 0.3 μM (10σ /m ) using linear sweep voltammetry (LSV). The Fe-ZnO/GCE sensor was also effectively used to detect Trp in African catfish and multivitamin tablets. Trp analysis in real samples exhibited good recovery values of 89.60 to 99.15 %, demonstrating the accuracy and practicality of the method.
研究领域:
分析化学
·
生物医学工程
·
材料科学
✓ 已验证
DOI
高影响因子
IEEE TRANSACTIONS ON MAGNETICS
·
2019
·Vol. 55
·期 12
·1-7
·
IF 1.651
Wentao Hu,Xi’an Fan,Zigui Luo,Fan Luo,Guangqiang Li,Yawei Li,Jian Wang
Fe/ZrSiO4 composite compacts with high thermal stability and excellent soft magnetic performance were prepared successfully by mechanical milling and spark plasma sintering. The effect of ZrSiO4 content on microstructure and magnetic properties of the Fe/ZrSiO4 composite compacts was investigated in detail. ZrSiO4 could be coated uniformly on the surface of Fe particles. With the increasing ZrSiO4 content, the core losses are effectively reduced, but the effective permeability and the saturation magnetic magnetization gradually decrease, while the coercivity has shown the opposite trend accordingly. The composite compact with 7.5 wt% ZrSiO4 has shown the superior structure and soft magnetic properties such as high saturation magnetic magnetization (202.20 emu/g), stable effective magnetic permeability (29.39), and lower core loss (4.53 W . kg-1 at 5 kHz). The results indicated that the Fe/ZrSiO4 composite compacts had potential application prospects in electromagnetic conversion equipment at medium and high frequencies.
研究领域:
材料科学
·
磁性材料
·
粉末冶金
·
复合材料
·
功能材料
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Yan Yuan,Junxiang Wang,Zongqian Hu,Haiping Lei,Donghua Tian,Shuqiang Jiao
A Prussian blue analogue, Na 2 Co 3 [Fe(CN) 6 ] 2 , has been fabricated by a facile co-precipitation method at room temperature as a potential cathode material for both lithium-ion and sodium-ion batteries. It found that the Na 2 Co 3 [Fe(CN) 6 ] 2 nanoparticles with a primary particle size of 30–40 nm have been synthesized, and exhibited an excellent electrochemical performance , including a long cycling behavior in lithium-ion batteries and a good rate performance in sodium-ion batteries. In lithium-ion batteries, the Na 2 Co 3 [Fe(CN) 6 ] 2 nanoparticles cathode can deliver an excellent cyclic performance with 73.0% retention of initial capacity after 50 cycles at 50 mA g −1 . Moreover, when Na 2 Co 3 [Fe(CN) 6 ] 2 is used as cathode material of sodium-ion batteries, it exhibits an outstanding rate performance exceeding 75.2% retention of initial capacity after 50 cycles at 200 mA g −1 . Therefore, the Na 2 Co 3 [Fe(CN) 6 ] 2 nanoparticles can be a potential cathode candidate for the application of lithium-ion and sodium-ion batteries due to its excellent electrochemical performance, easy preparation, low cost and environment benefits.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
纳米材料
✓ 已验证
DOI
高影响因子
ANALYST
·
2019
·Vol. 144
·期 8
·2716-2724
·
IF 4.019
Zunfu Hu,Yongheng Yin,Qingyun Liu,Xiuwen Zheng
The rapid and sensitive detection of H2O2 is of great importance for a series of industries. In this work, surface-modified FePt nanoparticles were loaded into metal–organic frameworks (MOFs, MIL-101(Fe)) in a facile in situ way and the resulting material (FePt@MOFs NCs) acted as a high efficient colorimetric detection agent. The as-prepared FePt@MOFs NCs possess a well-defined octahedron shape and high stability in water. Via the oxidation reaction of the chromogenic substrate 4,4′-bi-2,6-xylidine, the obtained FePt@MOFs NCs were proved to possess prominent peroxidase-mimic activity. Under the most favorable conditions, the linear range for H2O2 detection was 40 μM to 800 μM and the detection limit was 18.9 μM. Furthermore, FePt@MOFs NCs were successfully applied to the detection of H2O2 in real samples such as fruit juice. The developed colorimetric sensing platform is expected to have potential for the exact detection of H2O2 for the food, mining and bio-pharmaceutical industries, due to its high stability, sensitivity, rapidness and easy preparation.
研究领域:
分析化学
·
纳米生物技术
·
食品分析
·
环境监测
·
生物传感
·
材料科学
·
分子诊断
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Qia Zhang,JianXiong Zou,Jin Ai,XiaoTian Pan,DongHong Qiao,Seong Chan Jun,Vijaykumar V. Jadhav,Ling Kang,Chun Huang,Jian Zhang
The current collector serves as a crucial element in supercapacitors, acting as a medium between the electrode material and the substrate. Due to its excellent conductivity, a metal collector is typically favored. Enhancing the binding strength between the collector and the substrate as well as between the collector and the electrode material has emerged as a critical factor for enhancing the capacitance performance. In this study, a Ag film with a grass root-like structure was initially grown on a PI substrate through the surface modification and ion exchange (SMIE) process. This Ag interlocking structure contributes to strong binding between the PI substrate and Ag without compromising the mechanical properties of the Ag film. To further enhance the electrochemical properties at low scan rates, electroless-plated Cu was subsequently deposited on the Ag film to form the Cu/Ag current collector. Moreover, the Cu within the Cu/Ag current collector served as a precursor for the growth of FeOOH–Cu(OH)2 via a two-step in situ method. The resulting FeOOH–Cu(OH)2/Cu/Ag structure as a whole is binder-free. Supercapacitors employing symmetric FeOOH–Cu(OH)2/Cu/Ag structures were assembled, and their energy storage properties were investigated. The solution-based low-temperature process used in this study offers the potential for cost-effective and large-scale applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF POROUS MATERIALS
·
2015
·Vol. 23
·期 2
·301-310
·
IF 1.108
Ye Wei,Zhao Binxia,Gao Han,Huang Jiajun,Zhang Xiaoli
Fe,Zn,Al-pillared montmorillonite (Mt) were prepared by ion exchange reaction. Effect of the Fe/Zn molar ratio in Fe,Zn,Al-pillaring solution on the structural properties of Fe,Zn,Al-Mt was examined. Characterization studies were performed by N 2 -adsorption/desorption, ICP, FTIR, DR UV–Vis spectroscopy and XRD. The interlayer space, specific surface and volume of micropores of pillared-Mt was 18.8 Å, 157 m 2 g −1 and 0.114 cm 3 g −1 respectively. Besides, the catalytic performance of Fe,Zn,Al-Mt was analyzed through wet peroxide oxidation of Orange II under mild experimental condition. The results indicated that the catalytic performance of Fe,Zn,Al-Mt was affected by the Fe/Zn molar ratio as following pattern: the obtained pillared solids with lower Fe/Zn molar ratios exhibited better catalytic performance and less iron leaching during the reaction. Moreover, the introduction of zinc into Mt shortened the induction time of reaction and improved the catalytic behaviour. Throughout this work, the chemical oxygen demand removal of OII was 77.1 % after the solution treated by Fe,Zn,Al(3/7)-Mt (defined as the Fe/Zn molar ratio of 3/7 in the pillaring solution) catalyst at temperature of 60 °C and atmospheric pressure of 1 atm.
研究领域:
环境化学
·
催化材料
·
废水处理
·
无机非金属材料
·
表面科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Dandan Ma,Diankun Sun,Yajun Zou,Siman Mao,Yixuan Lv,Yao Wang,Jun Li,Jian-Wen Shi
A series of dandelion-like Fe-CeO 2 /CdS (FeCe x /Cd y ) nanoflowers with different molar ratios of Fe-CeO 2 to CdS are synthesized by solvothermal method for the first time. The FeCe x /Cd y nanoflowers are assembled by a large number of nanoparticles with the diameter of about 3 nm, and the introduction of Fe ions and the couple of CdS quantum dots (QDs) efficiently enhanced the relative percentage of Ce 3+ in CeO 2 . The as-obtained FeCe 1 /Cd 1 heterostructure exhibits the highest photocatalytic H 2 evolution ability of 108.9 μmol/h, which is 20.5, 6.1 and 7.1 times higher than CeO 2 , Fe-CeO 2 and CdS, respectively. This significantly enhanced photocatalytic performance can be mainly attributed to the synergy between the electronic anchoring effect of Fe 3+ /Fe 2+ and Ce 4+ /Ce 3+ redox couples and the internal electric field constructed by the II-type heterojunction between Fe-CeO 2 and CdS. This work provides a new idea for the design of efficient photocatalysts by combining the advantages of heterostructure and ion anchoring effect.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhenfei Yang,Xinnian Xia,Luhua Shao,Longlu wang,Yutang Liu
Herein, Ag 3 PO 4 /mixed-valence MIL-88A(Fe) [AMM] Z-scheme heterojunctions with an in-situ-generated photo–Fenton process were successfully constructed. The optimized AMM-20 heterojunctions show the maximum rate of photocatalytic TC degradation, which is 2.5 and 6.6 times of pristine Ag 3 PO 4 and MIL-88A(Fe). The electronic and band structures of Ag 3 PO 4 , MIL-88A(Fe), m-MIL-88A(Fe) and AMM heterojunctions were deeply investigated by both experimental and theoretical simulation. The Z-scheme transfer pathway greatly accelerates the transfer rate of charge carriers and effectively inhibits the photocorrosion, leading to the improvement of photocatalytic activity and photostability. Moreover, the adjustment of the Fe II /Fe III ratio of mixed-valence MIL-88A(Fe) further enhances the photocatalytic activity of the hybrid photocatalysts, benefiting from the promotion of the efficiency of the in-situ-generated photo-Fenton process. The Z-scheme transfer route coupling with an in-situ-generated photo–Fenton process was verified by the free radical trapping experiment, in-situ XPS measurement, in-situ ESR measurement, and coumarin fluorescence analysis. The degradation pathways of TC were determined through LC-MS analysis and theoretical calculation. Furthermore, the toxicity of intermediates was evaluated by QSAR prediction.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL PAPERS
·
2024
·Vol. 78
·期 6
·3761-3772
·
IF 2.1
Chen Yufeng,Zhao Ning
Surface-enhanced Raman scattering (SERS) has been widely applied in various fields due to its high sensitivity and rapid response capability. In this paper, a MIL-101(Fe)@Ag composite SERS substrate was prepared using photoreduction method. The synthesized MIL-101(Fe)@Ag composite substrate combines the localized surface plasmon resonance properties of silver nanoparticles and the high adsorption capacity of metal–organic frameworks. MIL-101 (Fe)@Ag composite substrate was characterized by FTIR, UV and SEM. The SERS activity of the composite substrates was characterized by measuring the Raman signals of PATP. The detection limit of the substrate for PATP was 10 –8 M, with a relative standard deviation of only about 5.3%, indicating good SERS effect and reproducibility of the substrate. Finally, the prepared substrate was applied for formaldehyde detection, with a detection limit of 10 –9 M. Principal component analysis was used for quantitative analysis of formaldehyde. This work proposes a simple method for synthesizing MIL-101(Fe)@Ag composite substrates with high SERS performance and uniformity and establishes a rapid detection method for formaldehyde using this substrate, which has great application prospects.
研究领域:
分析化学
·
纳米技术
·
材料科学
·
环境科学
·
光谱学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）