SENSORS AND ACTUATORS B-CHEMICAL
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2024
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IF 8
Gongle Shen,Linling Zhong,Yuanhang Bi,Yifan Liu,Jiangqi Zhao,Xin Wen,Yifei Zhu,Lei Feng,Li Geng,Fan Yu,Changjun Hou,Xianfeng Wang
Considering the vital role of sulfide ions (S 2- ) in food safety, environmental pollution and public health, accurate and efficient detection of S 2- is of great importance. In this study, Er-MOFs with the structure of four-pointed star was successfully designed and synthesized using Er(III) as the metal center and TCPP as the ligand. It is found that host-guest effects occur between Er-MOFs and S 2- , blocking the ligand-to-metal charge transfer (LMCT) effect and O-H vibration. This progress leads to the fluorescence signal-on of Er-MOFs and the production of a brown color. In view of this, a Er-MOFs-based sensor was constructed for rapid and on-site monitoring of S 2- in water, which shows the triple-signal outputs including fluorescence, absorbance and smartphone-based RGB analysis with high sensitivity and selectivity. More importantly, the successful measurement of S 2- in real water samples with satisfactory recoveries from 96.26 % to 104.03 %, demonstrating the practicality and effectiveness of Er-MOFs for S 2- recognition. Overall, this assay exhibits the promising applications for S 2- measurement in the fields of environmental pollution and food safety.
研究领域:
材料科学
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环境科学
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食品安全
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DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2022
·Vol. 32
·期 5
·1815-1823
·
IF 2.525
Yang Jing,Huang Yan,Cui Hanyue,Li Li,Ding Yaping
In this work, the fluorescent sensor based on fluorescence resonance energy transfer (FRET) and electrostatic interaction (EI) was prepared for the ratiometric and visual detecting S 2– . The FRET fluorescent sensor consists of two fluorophores, with carbon dots (CDs) as energy donors and silver nanoclusters (Ag NCs) as acceptors. At 390 nm excitation, CDs and Ag NCs showed two well-separated peaks at 445 nm and 660 nm, separately. The existence of S 2– caused the red fluorescence at 660 nm to be quenched, whereas the blue fluorescence at 445 nm was restored, and the fluorescence color of the ratiometric sensor changed from pink to blue. It could be employed in ratiometric and visual detecting S 2– . The linear range of quantitative detection S 2– was 0.5–100 μM, and its detection limit was 0.35 μM. CDs-Ag NCs could be used for detecting S 2– in mineral water and tap water. The results showed that the FRET ratiometric fluorescent sensor exhibits good anti-interference and high selectivity for detecting S 2– in environmental water samples.
研究领域:
分析化学
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环境科学
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DOI
PubMed
高影响因子
Water
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2024
·Vol. 16
·期 14
·1994
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IF 3
Hongbin Wang,Shijie Kuang,Youlun Su,Xu Ren,Bowen Yang,Yongliang Sun
Diclofenac (DCF) is often detected in diverse aquatic bodies, and ineffective management can lead to detrimental effects on human health and ecosystems. In this study, degradation of DCF by Fe(III) and Mn(II) activating bisulfite (BS) was investigated. In the Fe(III)/Mn(II)/BS system, 93.4% DCF was degraded at 200 μM BS within 120 s, and additional research on 1000 μM BS achieved 88.4% degradation efficacy. Moreover, kinetics fitting of DCF degradation with the different BS concentrations was studied to find the two highest reaction rates (200 and 1000 μM,kobs= 0.0297 and 0.0317 s−1, respectively). Whereafter, SO4•−and Mn(III) were identified as the main active species at these two concentrations, respectively. Density functional theory (DFT) calculations, molecular frontier orbital theory, and surface electrostatic potential (ESP) forecast electrophilic attack sites. DCF degradation pathways by radical and non-radical ways were proposed by attack site prediction and thirteen intermediates identified by UPLC-QTOF-MS. ECOSAR software 2.2 was used for toxicity assessment. This work studied DCF degradation by the Fe(III)/Mn(II)/BS process in the presence of different concentrations of BS, providing a new insight into water purification.
研究领域:
环境科学
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化学
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DOI
高影响因子
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
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2023
·
IF 1.2
Peng WANG,Wen-Heng LI,Xiao-Hong WANG,Dong-Shan XIANG,Kun ZHAI
We developed a new quantitative detection method for trace sulfur ions (S 2− ) in water using a Cu-containing metal–organic framework material (CuBDC) and 6-carboxyfluorescein group (FAM)-labeled DNA of arbitrary sequence. Without S 2− in the system, the FAM-labeled DNA can be adsorbed on the CuBDC surface through π–π stacking, hydrogen bonding, and van der Waals forces, and then the fluorescent dye FAM is near the Cu 2+ on the CuBDC surface, and the fluorescence of FAM is quenched by a photoinduced electron transfer mechanism between Cu 2+ and FAM. With S 2− in the system, S 2− reacts with Cu 2+ in CuBDC to form the more structurally stable compound CuS, leading to CuBDC decomposition, and the FAM-labeled DNA detaches from the CuBDC surface and the fluorescence of FAM recovers. The quantitative detection of S 2− is realized according to the change in FAM fluorescence intensity. Under optimized conditions, a good linear relationship holds between the fluorescence intensity (F i ) of FAM and the concentration ( C i ) of S 2− in the range of 2–120 nmol/L, and the detection limit is 1.5 nmol/L (3 σ, n = 9). The method has good selectivity and accuracy, and it can be applied to rapidly and accurately analyze S 2− in real water samples.
研究领域:
分析化学
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环境科学
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材料科学
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生物化学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2023
·
IF 8.4
Yue Qu,Tao Chen,Yuanhong Xu
It is in urgent to develop a facile sulfur ion (S 2- ) detection platform with good selectivity, sensitivity and portability, since the abnormal concentration of S 2- poses a serious threat to human health and environment. Nanozymes are expected as promising colorimetric probe for visual assays, but the selectivity is challenged since the mostly typical nanozymes are oxidoreductase-like ones while various analytes possess equivalent redox capacity. Herein, one-platform-two-channels detection method with both excellent selectivity and sensitivity was constructed based on the bifunctions of tin telluride (SnTe) nanobelts. On one hand, SnTe and S 2- can react rapidly to form a special brown product SnS to assure the selectivity; On the other hand, SnTe with peroxidase-like activity can oxidize 3,3’,5,5’-tetramethylbenzidine (TMB) to blue ox-TMB in the presence of H 2 O 2 , while strong reducing S 2- could inversely convert the solution from blue to colorless and then brown, enabling a wider range of S 2- detection (10 nM-900 μM) and low detection limit of 7.1 nM. In addition, this detection platform could still show excellent specificity against 19 other interfering substances in sulfur soaps with complex components. With the assistance of the color-to-value conversion function of a smartphone, a portable signal reading-out platform was established, which can successfully achieve the accurate visualization of the S 2− in 10 min
研究领域:
分析化学
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环境科学
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生物医学工程
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DOI
高影响因子
LUMINESCENCE
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2024
·Vol. 39
·期 10
·e4916
·
IF 3.2
Chen Wang,Wenheng Li,Xiaohong Wang,Dongshan Xiang,Kun Zhai
In this paper, a highly sensitive method for sulfur ion (S 2− ) detection was developed based on a four-color fluorescence probe constructed from copper-containing metal–organic framework (CuBDC) and four dye-labeled single-strand DNA (ssDNA). In the absence of S 2− , dye-labeled ssDNA can be adsorbed on the surface of CuBDC, and the dyes are close to copper ion on the CuBDC surface, their fluorescence is quenched by copper ion, and their fluorescence signals are weak. In the presence of S 2− in the system, S 2− reacts with copper ion in CuBDC to form CuS, which has a more stable structure than complex CuBDC, resulting in the decomposition of CuBDC. In this case, dye-labeled ssDNA are detached from the CuBDC surface and dissolved in the solution, and the fluorescence of the dyes is restored. Under the optimized conditions, there is a good linear relationship between the total fluorescence intensity of four dyes and the concentration of S 2− in the range of 2 × 10 −9 to 5 × 10 −8 mol/L; the detection limit is 2.2 × 10 −10 mol/L. The method has a good selectivity and accuracy, and it can be applied to the analysis and detection of S 2− in actual water samples.
研究领域:
分析化学
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环境科学
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材料科学
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DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
Li Tongtong,Wang Boran,Cao Yu,Liu Zhexuan,Wang Shaogang,Zhang Qi,Sun Jie,Zhou Guangmin
Hydrogen production by seawater electrolysis is significantly hindered by high energy costs and undesirable detrimental chlorine chemistry in seawater. In this work, energy-saving hydrogen production is reported by chlorine-free seawater splitting coupling tip-enhanced electric field promoted electrocatalytic sulfion oxidation reaction. We present a bifunctional needle-like Co 3 S 4 catalyst grown on nickel foam with a unique tip structure that enhances the kinetic rate by improving the current density in the tip region. The assembled hybrid seawater electrolyzer combines thermodynamically favorable sulfion oxidation and cathodic seawater reduction can enable sustainable hydrogen production at a current density of 100 mA cm −2 for up to 504 h. The hybrid seawater electrolyzer has the potential for scale-up industrial implementation of hydrogen production by seawater electrolysis, which is promising to achieve high economic efficiency and environmental remediation.
研究领域:
化学工程
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材料科学
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电化学
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可再生能源
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Chen Zhao,Ayesha Aziz,Wenjing Lu,Hongmei Xu,Muhammad Asif,Shaomin Shuang,Chuan Dong
Mercury ion (Hg 2+ ) is considered a harmful neurotoxin, and real-time monitoring of Hg 2+ concentrations in environmental and biological samples is critical. Fluorescent probes are a rapidly emerging visualization tool owing to their simple design and good selectivity. Herein, a novel fluorescence (FL) probe 2-(4-((6-((quinolin-8-yloxy)methyl)pyridin-2-yl)methyl)piperazin-1-yl)anthracene-9,10-dione ( QPPA ) is designed using piperazine as a linker between the anthraquinone group, which serves as a fluorophore, and N 4 O as the Hg 2+ ligand. The probe exhibits FL “turn-on” sensing of Hg 2+ because the complex inhibits the photo-induced electron transfer (PET) process. Moreover, QPPA can overcome the invasion by other possible cations, resulting in a clear color change from orange to colorless with the addition Hg 2+ . The chelation of QPPA with Hg 2+ in a 1:1 ratio. Subsequently, the theoretically determined binding sites of the ligand to Hg 2+ are validated through 1 H NMR titration. The in situ QPPA –Hg 2+ complex can be subjected to Hg 2+ extraction following the introduction of S 2− owing to its robust binding capacity. The exceptional limit of detection values for Hg 2+ and S 2− are obtained as 63.0 and 79.1 nM (S/N = 3), respectively. Moreover, QPPA can display bright red FL in the presence of Hg 2+ in different biological specimens such as HeLa cells, zebrafish, onion root tip tissues, and water flea Daphnia carinata , further providing an effective strategy for environmental monitoring and bioimaging of Hg 2+ in living organisms.
研究领域:
分析化学
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环境科学
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生物医学
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产品关联
DOI
PubMed
高影响因子
MINERALS ENGINEERING
·
2019
·
IF 3.315
Peilun Shen,Dianwen Liu,Xiaolin Zhang,Xiaodong Jia,Kaiwei Song,Dan Liu
Malachite is depressed during sulfidization flotation when excess sodium sulfide is added to it. Thus, this study investigated the role and mechanism of ammonium sulfate as a sulfidization promoter for eliminating the depression of excess S 2− via micro-flotation experiments, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy coupled with energy-dispersive spectroscopy (SEM-EDS), and inductively coupled plasma mass spectrometry (ICP-MS). Micro-flotation experiments revealed that malachite changed from a non-floating state to an easily floating state by (NH 4 ) 2 SO 4 addition prior to sulfidization with xanthate as the collector. The solution chemical reactions involving (NH 4 ) 2 SO 4 are the key to re-floating malachite. The surface properties of malachite were changed by (NH 4 ) 2 SO 4 , and these changes enhanced its flotation behavior. However, (NH 4 ) 2 SO 4 was not adsorbed onto the malachite surface in any form, as confirmed by the XPS analysis. (NH 4 ) 2 SO 4 has a dissolution on the malachite surface, causing lattice imperfections, which, in turn, provided the conditions necessary for subsequent adsorption of Cu(NH 3 ) n 2+ , S 2− (SH − ), and Cu 2+ on the malachite surface. Consequently, a layer or multilayer copper sulfide hydrophobic film formed on the malachite surface. Even the low-activity cylindrical surface of malachite was also covered with a stable copper sulfide film, resulting in improved malachite flotation in the presence of excess Na 2 S.
研究领域:
矿物加工工程
·
化学工程
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2020
·
IF 3.232
Shiqi Wang,Li Wang,Yongmei Zhu,Yonghai Song
The detection of S 2− is of great significance because excess S 2− can lead to a variety of serious physiological diseases. Here, two metal-organic frameworks (MOFs), ZnMOF-74 and CuMOF-74, were synthesized by using 2,5-dihydroxy terephthalic acid with strong fluorescence as organic ligand and Zn 2+ or Cu 2+ as central coordination ions for S 2− detection. Both as-prepared ZnMOF-74 and CuMOF-74 displayed nanospheres with a diameter of about 100 nm. Under the excitation of 353 nm, the ZnMOF-74 had a characteristic emission peak at 537 nm and the CuMOF-74 had a characteristic emission peak at 528 nm under excitation of 356 nm. The interaction of S 2− and Zn 2+ weakened the fluorescence of ZnMOF-74 but the interaction of S 2− with Cu 2+ to form CuS restored the fluorescence of CuMOF-74, so the ZnMOF-74 and CuMOF-74 were exploited as a fluorescent nanosensor for sensing S 2− . The ZnMOF-74 sensor has a good linear range of 19.6 nmol L −1 -90.0 μmol L −1 , and the limit of detection was as low as 6.53 nmol L −1 . The CuMOF-74 sensor has a good linear relationship with I I 0 in the S 2− concentration range of 1.50 nmol L −1 -125 μmol L −1 , and the limit of detection was 1.50 nmol L −1 . The proposed ZnMOF-74 and CuMOF-74 sensor could also detect S 2− in actual samples.
研究领域:
材料科学
·
分析化学
·
生物医学
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DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Jing Jiang,Yao Tian,Jiayi Zhang,Chenghui Zhang,Lunhong Ai
Development of multifunctional non-noble electrocatalysts for seawater electrolysis is imperative but still challenging for scale-up hydrogen production to avoid harmful chlorine chemistry. Herein, the metallic Cu-incorporated NiFe layered double hydroxide (LDH) nanosheets are prepared by a facile consecutive corrosion strategy using iron foam (IF) as a reactive substrate, which enable the corrosion-resistant and chlorine-free seawater electrolysis combined with anodic sulfion oxidation for energy-efficient hydrogen production at ultralow electricity consumption. The NiFe-LDH/Cu-IF exhibits excellent electrocatalytic activities for hydrogen evolution reaction (HER) and sulfion oxidation reaction (SOR), achieving low potentials of 0.203 and 0.310 V (vs RHE) at 100 mA cm −2 in alkaline seawater, respectively. The assembled hybrid HER||SOR seawater electrolyzer realizes the ultra-low cell voltage of 0.619 V and power consumption of 1.48 kWh/m 3 H 2 at 50 mA cm −2 , cutting energy consumption over 67 % compared to conventional seawater electrolysis.
研究领域:
材料科学
·
能源化学
·
电催化
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产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2015
·
IF 6.409
Lihua Jin,Zaihua Zhang,Anwen Tang,Cong Li,Yehua Shen
In this work, we have presented a novel strategy to utilize as-synthesized yeast extract-stabilized Cu nanoclusters (Cu NCs) for sensitive and selective detection of S 2− . The fluorescence intensity of Cu NCs was enhanced significantly in the presence of both Na 2 S 2 O 8 and S 2− . By virtue of this specific response, a Cu NC-based fluorescent turn-on sensor was developed, which allows the detection of S 2− in the range of 0.02–0.8 μM with a detection limit of 10 nM. The enhancing mechanism was also discussed based on fluorescence decay , transmission electron microscopy (TEM) and dynamic light scattering (DLS) studies, indicating that S 2− enhanced the Cu NCs emission mainly through sulfide-induced aggregation of Cu NCs. Furthermore, we demonstrated the usability of the present approach for the detection of S 2− in water samples, which illustrates its great potential for the environmental monitoring and water quality inspection fields.
研究领域:
分析化学
·
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
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