SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Linling Zhong,Fanpeng Gong,Jing Li,Guizhu Liu,Xin Wen,Fan Yu,Changjun Hou,Sen Yang,Fangyong Zhu,Xianfeng Wang
High-performance detection of cTnI possesses great significance for diagnosis of myocardial infarction. In this work, two kinds of lower-dimensional Cu(II)-loaded polydopamines were synthesized via in-situ polymerization of dopamine for the first time using Cu-pBDC MOFs and Cu-aBDC MOFs as templates. The obtained Cu-ppDA nanosheets and Cu-apDA nanoribbons maintain the original structure of MOFs and exhibit the advantages of large specific surface area and metal coordination effect, which efficiently enhances the adsorption of single-stranded aptamer DNA probe via π–π stacking. Energy transfer from FAM-Apt probe to Cu(II)-loaded pDA occurred, resulting in the fluoresce quenching. The inference of target cTnI assembles with FAM-Apt probe and the releases from FAM-Apt/Cu-ppDA or FAM-Apt/Cu-apDA systems, leading to the fluorescence recovery. This approach enables a simple, rapid, sensitive, and specific detection method for cTnI. By contrast, FAM-Apt/Cu-ppDA system shows a lower LOD than that of FAM-Apt/Cu-apDA. Furthermore, the successful implementation of these two fluorescent sensors for the detection of cTnI in serum samples obtained from mice with myocardial infarction has been demonstrated. The outcomes of this detection aligned with those achieved through the ELISA method, suggesting their promising potential for practical application in early screening for myocardial infarction.
研究领域:
生物医学工程
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分析化学
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医学诊断
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Xubing Sun,Shiyu Yin,Li Zhao,Wenhua Yang,Yaohui You
In this work, tannic acid was selected as a green cross-linking agent to cross-link carboxymethyl chitosan to prepare a magnetic adsorbent (CC-OTA@Fe 3 O 4 ), which was used to remove methylene blue (MB) and Cu 2+ . CC-OTA@Fe 3 O 4 was characterized by FTIR, 13 C NMR, XRD, VSM, TGA, BET and SEM. The adsorption behavior was studied using various parameters such as pH value, contact time, initial concentration of MB and Cu 2+ , and temperature. The results showed that adsorption of MB and Cu 2+ followed the pseudo-second-order model and the Sips model. The maximum adsorption capacities were determined to be 560.92 and 104.25 mg/g MB and Cu 2+ at 298 K, respectively. Thermodynamic analysis showed that the adsorption is spontaneous and endothermic in nature. According to the results of FTIR and XPS analyses, the electrostatic interaction was accompanied by π–π interaction and hydrogen bonding for MB adsorption, while complexation and electrostatic interaction were the predominant mechanism for Cu 2+ adsorption. Furthermore, CC-OTA@Fe 3 O 4 displayed remarkable stability in 0.1 M HNO 3 , exhibited promising recyclability, and could be easily separated from aqueous solutions in the magnetic field. This study demonstrates the potential of CC-OTA@Fe 3 O 4 as an adsorbent for the removal of cationic dyes and heavy metals from wastewater.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2021
·
IF 5.876
Shihan Wang,Siyao Bian,Jianzhuo Liu,Jihui Li,Shuying Xu,Zhenyi Liang
Background Biochar has attracted considerable attention as a low-cost adsorbent comprised of carbon matrix and mineral for treatment of wastewater. The main purpose of this work was to manufacture CaCO 3 -rich biochars using crayfish shell as feedstock for removal of Cu(II) and Pb(II) from aqueous solution. Methods Pristine and magnetic biochars were prepared via direct pyrolysis and K 2 FeO 4 -promoted pyrolysis , respectively, and characterized by element analysis, BET, FTIR, SEM-EDS, XRD and XPS. Moreover, their adsorption capabilities toward Cu(II) and Pb(II) were investigated in aqueous solution. Findings A large amount of CaCO 3 was assembled on the pristine biochar pyrolyzed at 600 °C, leading to 715.10 mg/g and 1682.87 mg/g adsorption capacities for Cu(II) and Pb(II), respectively. Whereas, CaCO 3 and single phase Fe 3 O 4 were simultaneously introduced into the magnetic biochar with K 2 FeO 4 -promoted pyrolysis at 600 °C using 1/1 (g/g) ratio of K 2 FeO 4 to crayfish shell, where 417.05 mg/g and 974.10 mg/g maximum adsorption capabilities were obtained for Cu(II) and Pb(II) with 29.66 emu/g saturation magnetism, respectively. Cu(II) and Pb(II) were mainly adsorbed onto the biochars as carbonates and oxides by their interaction with CaCO 3 and carbon matrix.
研究领域:
环境科学
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材料科学
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废水处理
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产品关联
DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2024
·
IF 2.2
Fengrong Zhang,Cuilan Zhang,Binghan Zhang,Dandan Han,Longwei Du,Lishun Wu
Blast furnace slag (BFS) is a kind of waste produced in industrial production, as well as a valuable secondary resource. In this paper, layered double hydroxides composites (BFS/LDHs) were prepared by aqueous polymerization, with industrial waste BFS as modifier and magnesium nitrate, aluminium nitrate, and urea as raw materials. BFS/LDHs have been characterized by using scanning electron microscopy (SEM), fourier infrared spectrometer (FT IR), x-ray diffraction (XRD), and the specific surface area analyser (BET). The adsorption of BFS/LDHs on Cu (II) and methylene blue (MB) was investigated by batch experiments. The results showed that the adsorption capacity of BFS/LDHs to Cu (II) is stronger than that of MB. What’s more, the solid concentration effect was found in the process of sorption kinetics and sorption isotherms. The sorption kinetics curves of Cu (II) and MB on BFS/LDHs were well fitted by the quasi-second-order kinetics under different adsorbent concentrations. Langmuir and Freundlich sorption isotherm models were used to analyse the adsorption. It showed that the adsorption conforms to Langmuir and Freundlich’s adsorption isotherm models. The BFS/LDHs composites have good recycling availability in this adsorption process of Cu (II) and MB, the removal capacity of which was reduced by 16.1% and 3.8% after being recycled for six times, respectively. More importantly, BFS/LDHs composites are not only expected to become a sewage treatment agent, but also to solve the problem of industrial waste treatment, which is a win–win strategy.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2016
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IF 2.76
Zhan-Chao Wu,Zhao-Zhan Wang,Jie Liu,Jin-Hua Yin,Shao-Ping Kuang
A new adsorbent l -Arg-CS/Fe 3 O 4 was prepared by l -arginine modifying magnetic chitosan for the removal of Cu(II ) ions from aqueous solution. The compositions of l -Arg-CS/Fe 3 O 4 were characterized by infrared (IR) spectroscopy, X-ray diffraction (XRD) analysis and thermogravimetric (TG) analysis, respectively. The surface morphology, particle size and specific surface area were measured on scanning electron microscope (SEM) and micromeritics gas adsorption surface analyzer. The adsorption behavior of l -Arg-CS/Fe 3 O 4 for Cu(II ) were investigated as a function of pH, contact time and initial Cu(II ) concentration. The maximum adsorption capacity for Cu(II ) was 2.13 mmol g −1 at the optimized adsorption conditions, which were pH = 5.5, t = 13 min, C 0 = 4.0 mmol L −1 . The adsorption behavior was evaluated by the analysis of adsorption kinetics. Freundlich and Langmuir isotherm models were used to estimate the adsorption mode. l -Arg-CS/Fe 3 O 4 exhibited high adsorption capability after five regeneration cycles. The adsorption and desorption mechanisms were discussed. The results show that l -Arg-CS/Fe 3 O 4 is a promising adsorbent for removal of Cu(II) from aqueous solutions.
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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DOI
高影响因子
CHEMOSPHERE
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2021
·
IF 7.086
Qing Zhao,Xiao Zhang,Dezhi Huang,Long Chen,Shuxin Li,Jean-Marc Chovelon,Lei Zhou,Guangli Xiu
Cu(II) is generally considered to be a poor activator for PMS decomposition, thus the potential impact of trace Cu(II) on PMS induced oxidation of typical pollutants is always overlooked. In this study, we reported that trace Cu(II) could significantly promote PMS induced degradation of four selected sulfonamide antibiotics (SAs), namely, sulfamehoxazole (SMX), sulfathiazole (STZ), sulfamerazine (SMZ), and sulfamonomethoxine (SMM). Different from conventional PMS-induced oxidation process, high-valent Cu(III) was ascertained as the primary reactive intermediate for SAs degradation, which was confirmed by raman tests and electron paramagnetic resonance (EPR). High concentrations of Cu(II) or PMS were beneficial to degradation of the selected contaminants. In PMS/Cu(II) oxidation system, all the selected SAs could undergo several different degradation pathways including continuous oxidation of aniline group, hydroxylation and S–N bond cleavage. In particular, for six-membered SAs, such as SMZ and SMM, a SO 2 extrusion pathway was also detected. The potential mechanism for Cu(III) formation was also proposed, which was believed to be highly related to the nature of the SAs. Hydroxylamine-SAs (N 4 –OH–SAs), generated from direct PMS oxidation of SAs, was deduced as the “promoter” for the whole oxidation process. And the generation of Cu(III) was likely to proceed through the interaction between PMS and Cu(I), which possibly derived from the reduction of Cu(II) by N 4 –OH–SAs. The results obtained in this study validated the contribution of Cu(III) to the elimination of pollutants and expanded our understanding of the oxidation process of PMS in the presence of trace amounts of Cu(II).
研究领域:
环境化学
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水处理
·
污染物降解
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2016
·
IF 4.836
Chunzhen Fan,Kan Li,Juexiu Li,Diwen Ying,Yalin Wang,Jinping Jia
In this paper, tetraethylenepentamine (TEPA) modified chitosan/CoFe 2 O 4 particles were prepared for comparative and competitive adsorption of Cu(II) and Pb(II) in single and bi-component aqueous solutions. The characteristics results of SEM, FTIR and XRD indicated that the adsorbent was successfully fabricated. The magnetic property results manifested that the particles with saturation magnetization value of 63.83 emu g −1 would have a fast magnetic response. The effects of experimental parameters including contact time, pH value, initial metal ions concentration and coexisting ions on single and bi-component adsorption were investigated. The results revealed that the adsorption kinetic was followed pseudo-second-order kinetic model, indicating that chemical adsorption was the rate-limiting step. Sorption isotherms were also determined in single and bi-component solutions with different mass ratio of Cu(II) to Pb(II) (Cu(II)/Pb(II)) and fitted using Langmuir and Freundlich isotherm models. A better fit for Cu(II) and Pb(II) adsorption were obtained with Langmuir model, with a maximum sorption capacity of 168.067 and 228.311 mg g −1 for Cu(II) and Pb(II) in single component solution, 139.860 and 160.256 mg g −1 in bi-component solution (Cu(II)/Pb(II) = 1:1), respectively. The present results suggest that TEPA modified chitosan/CoFe 2 O 4 particles are feasible and satisfactory adsorbent for efficient removal of Cu(II) and Pb(II) ions.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Yang Liu,Guiliang Li,Qiu Han,Haibo Lin,Qiang Li,Gang Deng,Fu Liu
The removal of urea poses a significant challenge in reclaiming waste dialysate, especially for portable dialysis. Here, we developed a novel Cu (II)-phenolic complex incorporated hemodialysis membrane through an adsorption-diffusion mechanism for efficient urea removal. The synergistic effect between the hemodialysis membrane and the adsorbent composed of tannic acid (TA), polyethyleneimine (PEI), and Fe (II)/Cu (II) bimetal ions exhibited enhanced coordination towards amine groups present in urea, resulting in rapid adsorption kinetics and high adsorption capacity via chemical interactions. Additionally, uniformly distributed Cu (II) sites on the membrane surface promoted the hemocompatibility by converting S-nitrosothiol to nitric oxide (NO), thereby inhibiting platelet activation. In simulated hemodialysis experiments, our adsorptive-diffusive membrane demonstrated high removal efficiency (∼90 %) for urea using 1 L dialysate compared to ∼10 % of pristine membrane. The incorporation of Cu (II)-phenolic complex into the hemodialysis membrane presents a novel approach for enhancing urea removal, thereby reducing dialysate consumption and simultaneously improving the hemocompatibility of the membrane.
研究领域:
材料科学
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生物医学工程
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化学工程
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医疗器械
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
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IF 7.312
Yichen Ding,Dongya Li,Shiyu Zuo,Zeyu Guan,Su Ding
The synergistic effect of radicals and non-radical pathways has attracted much attention for pollutant removal in complex water environments. A novel B-doped CuO/Cu 2 O composite material (B-Cu x O) was synthesized to activate PMS for the degradation of bisphenol A (BPA). XPS and FT-IR proved that B was doped into the Cu x O, which changed the proportion of Cu(Ⅱ) and Cu(Ⅰ). As a result, the cycle of Cu(Ⅱ)/Cu(Ⅰ) was promoted and the kinetic degradation rate of BPA increased by 12 times. The radicals quenching experiments and EPR verified the effects of radicals (·OH and SO 4 ·- ) and non-radical ( 1 O 2 ) pathways in the pollution degradation processes. The results show that B doping accelerated the Cu(Ⅱ)/Cu(Ⅰ) cycle, and at the same time realized the synergistic effect of radicals and non-radical. The PMS/B-Cu x O system exhibited consistent performance in a wide pH range of 5–11. The toxicity evaluation of the transformation products among BPA solutions was studied. This study provided a novel method for accelerating the catalysis of radicals and non-radical synergy.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL ENGINEERING
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2024
·Vol. 150
·期 5
·04024016
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IF 1.6
Chenglong Zou,Qun Wu,Kun Guan,Fahui Nie,Sulin Xiang
Biochar with abundant functional groups, porous structure, and high specific surface area has been widely used as an adsorbent for the removal of metal ions, and its low production costs make it economically suitable for large-scale application in various industries. Hydroxyapatite nanoparticles were used to functionalize magnetic rice husk biochar (MBC) to produce hydroxyapatite functionalized magnetic rice husk biochar (HAP@MBC) in this study. The functional groups, magnetism performance, surface morphology, and aperture structure of HAP@MBC were characterized to explore the feasibility of its application in the treatment of wastewater containing Cu(II) ions. It is found that the maximum adsorption removal rate reaches 96.02% at 35°C, pH=5.0, with an adsorbent dosage of 0.65 g/L and an initial Cu(II) ion concentration of 50 mg/L. Additionally, adsorption kinetics, isotherms, and thermodynamics were analyzed to probe into the adsorption mechanism of Cu(II) ions by HAP@MBC. The results show that the adsorption process is very close to the pseudo-second-order model, indicating that the adsorption process is mainly controlled by chemisorption. The adsorption of Cu(II) ions can also be fitted by the intraparticle diffusion model, revealing that the adsorption rate is limited by intraparticle diffusion as well as other factors. Moreover, the adsorption process is consistent with the Langmuir isotherm, and the saturated adsorption capacity is calculated to be 81.59 mg/g. Thermodynamic analysis shows that the value of adsorption enthalpy change is 48.35 kJ/mol, suggesting the adsorption process is chemisorption. More precisely, it is a spontaneous entropy-increasing reaction, and an increase in the temperature is conducive to the adsorption. To sum up, HAP@MBC exhibits perfect adsorption properties and has the potential to be a novel and promising adsorbent for the removal of Cu(II) ions.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
·
IF 13.273
Sihan Li,Yanqi Gan,Syed Jalil Shah,Ruimeng Wang,Wenxue Gong,Rule Wei,Hongbing Ji,Zhongxing Zhao,Zhenxia Zhao
Competitive adsorption of complex nonsteroidal anti-inflammatory drugs (NSAIDs) from wastewater often reduces the adsorption capacity of object pollutants on most porous materials. To address this issue, NSAIDs molecules were proposed for engineering imprinted pores in UiO-66s to boost their adsorption capacity towards diclofenac sodium (DCF) and Cu(II) in a complex solution. Naproxen (NAP) with proper chemical structure was proved to introduce more imprinted pores (at ~19 Å) with enhanced mesoporous volume, abundant unsaturated metal sites, and terminal hydroxyl groups in UiO-66@NAP. These new intriguing properties awarded high adsorption affinity to UiO-66@NAP for DCF and Cu(II), and their adsorption capacities reached up to 385 and 52 mg/g for single DCF and Cu(II) components, respectively. When DCF and Cu(II) simultaneously appeared in an aqueous solution, DCF was proved to preferentially occupy adsorption sites on UiO-66@NAP with higher adsorption kinetics compared to Cu(II). Afterwards, these pre-adsorbed DCF acted as new adsorption sites to bridge more Cu(II) in the solution. Similarly, the adsorbed Cu(II) on UiO-66@NAP had the same reciprocal bridging effect towards DCF, which realized the synergistic adsorption of DCF and Cu(II) over UiO-66@NAP. Notably, DCF was found to greatly boost the synergistic effect of the Cu(II) adsorption. As a result, UiO-66@NAP exhibited 1.5 and 2.6 times higher uptakes for DCF (573 mg/g) and Cu(II) (135 mg/g) in the binary system compared to their single pollutant system, and its equilibrium adsorption capacity was much higher compared to several state-of-the-art adsorbents. The current work set out a new strategy to modify MOFs for enhanced adsorption of complex NSAID contaminants and revealed a deep understanding of the interactions between NSAIDs and heavy metals ions .
研究领域:
环境科学
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材料科学
·
药物化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2015
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IF 2.858
Zhan-Chao Wu,Zhao-Zhan Wang,Jie Liu,Jin-Hua Yin,Shao-Ping Kuang
A new porous magnetic chitosan modified by melamine (MA-CS/Fe 3 O 4 ) was synthesized. The compositions and surface topographies were characterized by infrared (IR) spectroscopy, X-ray diffraction (XRD) analysis, thermogravimetric (TG) analysis and scanning electron microscope (SEM), respectively. The results of adsorption kinetics showed the adsorption behavior could be better described by the pseudo-second-order equation ( R > 0.999). The adsorption isotherm was well fitted by the Langmuir equation ( R > 0.999), and the values of separation factors were in the range of 0–1.0. The maximum adsorption capacity for Cu(II) was 2.58 mmol g −1 at the optimal experimental conditions, which were pH = 5.5, t = 25 min, C 0 = 5.0 mmol L −1 . The rate-controlling step was supposed to be chemical adsorption rather than mass transport. The adsorbent still exhibited high adsorption capacity after five regeneration cycles. The adsorption mechanism was due to coordination between Cu(II) and N atoms.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 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）