SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Xi Tang,Yilin Wang,Zhifang Liu,Maoheng Fei,Ronghuan Gao,Yixi Xie,Xiayi Hu,Pengcheng Zhao,Junjie Fei
Characterized by high toxicity and difficult degradation, m-nitrophenol (3-NP) is an environmental pollutant that endangers the environment and biological systems. Therefore, the development of analytical techniques for the detection of low concentrations of 3-NP is critical for the environment and human health. In this work, spherical CdIn 2 S 4 and tiny ZnS particles were prepared by a hydrothermal method , and the Z-type ZnS/CdIn 2 S 4 heterojunction material was obtained by ultrasonically assembling ZnS onto CdIn 2 S 4 . The Z-type ZnS/CdIn 2 S 4 heterojunction possesses a better photocurrent response and a good electron transport capacity, and it can efficiently separate the photogenerated electron-hole pairs. Therefore, a photoelectrochemical sensor for accurate detection of 3-NP in water was constructed based on the Z-type ZnS/CdIn 2 S 4 heterostructure. The sensor has a detection range from 5 × 10 −12 M to 1 × 10 −8 M and an extremely low limit of detection (1.28 ×10 −12 M), which is rare among other sensors. Meanwhile, the sensor showed excellent performance in real samples, indicating that it can effectively monitor 3-NP in real water samples. The validation of the sensor using UV–visible spectra also yielded satisfactory results.
研究领域:
环境分析化学
·
材料科学
·
分析化学
·
光催化
·
传感器技术
✓ 已验证
DOI
高影响因子
Analytical Methods
·
2025
·
IF 2.6
Zuhang Ding,Jianzheng Wang,Jing Jin,Min-jie Guo,Qinran Li,Zhi Fan,Jin Zhao
This research describes a novel electrochemical sensor based on a polyimide-silver nanowire (PI-AgNWs) composite that is used to modify a glassy carbon electrode (GCE) for the simultaneous detection of multiple nitrophenol isomers (NPs) with high performance. The synergistic effect from polyimide (PI) doped silver nanowires (AgNWs) improved the selectivity and sensitivity of the fabricated sensor. First, the AgNWs was prepared by polyol process, and then composited with PI to obtain the target composite. Subsequently, the composite was characterized in detail and was used to modify GCE for the NPs detection. Afterwards, electrochemical measurements were performed to simultaneous detection for three NPs. Under the optimal condition, the results exhibited that the linear detection range of 1-400 μM for 4-nitrophenol (4-NP), 1-350 μM for both 2-nitrophenol (2-NP) and 3-nitrophenol (3-NP) and the limit of detection (LOD) were 0.081 μM for 2-NP, 0.107 μM for 3-NP, and 0.063 μM for 4-NP, respectively. In addition, the fabricated electrode exhibited excellent reproducibility (RSDs of 2.85% for 2-NP, 2.71% for 3-NP, and 1.80% for 4-NP, respectively) and stability (RSDs of 6.17% for 2-NP, 2.36% for 3-NP, and 3.89% for 4-NP, respectively) over multiple measurements. Moreover, the sensor showed excellent anti-interference capability and was successfully applied to detect NPs analytes in real water samples with recoveries ranging from 91.1% to 109.0%. This study emphasizes the potential application of PI-AgNWs composites for the rapid detection of NPs in the environment.
研究领域:
分析化学
·
环境监测
·
纳米材料
·
电化学传感
·
污染物检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2024
·
IF 2.2
Yongli Liu,Guobei Ge,Huanjia Liu,Yuxin Wang,Penghui Zhou,Bin Li,Guifen Zhu
2,4,6-Trinitrophenol (TNP) has high explosive risks and biological toxicity, and there has been considerable concern over the determination of TNP. In the present work, fluorescent carbon dots (CDs) stemmed from a green carbon source of pinecone by the facile hydrothermal approach. A novel environment- friendly fluorescent probe was developed to efficiently detect TNP by using the obtained CDs with remarkable fluorescence stability. The fluorescent CDs exhibited obvious excitation dependence with the highest peaks for excitation and emission occurring at 321 and 411 nm, respectively. The fluorescence intensity is significantly reduced by TNP owing to the inner filter effect with the CDs. The probe exhibited good linearity with TNP concentrations in the range of 0.025–20 μg mL−1, and the limit of detection was as low as 8.5 ng mL−1. Additionally, the probe proved successful in sensing TNP quantitatively in actual environmental samples with satisfied recoveries of 95.6–99.6%. The developed fluorescent probe offered an environment-friendly, efficient, rapid, and reliable platform for detecting trace TNP in the environmental field.HighlightsNovel carbon dots were synthesised from green precursors of pineal powder.The highly effective quenching process was put down to the inner filter effect.The as-constructed fluorescent probe was successfully utilised for sensing 2,4,6-trinitrophenol in environmental samples.The proposed method was simple, rapid, efficient, economical, and eco-friendly.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
·
IF 2.1
Mingya Wang,Hongxia Pan,Yongzheng Liu,Jun Chen,Duanlin Cao,Linxiu Zhao
3(5)-Nitropyrazole is obtained by rearrangement of 1-nitropyrazole in high boiling organic solvents. In this paper, the solubility of 3(5)-nitropyrazole in 12 high boiling solvents (anisole, benzonitrile, mesitylene, o-dichlorobenzene, 1-octanol, benzyl alcohol, 2-ethylhexyl acetate, dimethyl glutarate, cyclohexanone, N,N-dimethylformamide, N-methylformamide, and isophorone) was determined using the static gravimetric method over the temperature range of 283.15–323.15 K. The experimental results revealed that the solubility of 3(5)-nitropyrazole exhibited a positive correlation with temperature. Under ambient conditions at 298.15 K, the solubility decreased in the following order: N,N-dimethylformamide (37.705 × 10–2), N-methylformamide (20.131 × 10–2), cyclohexanone (13.469 × 10–2), isophorone (11.957 × 10–2), dimethyl glutarate (6.667 × 10–2), benzyl alcohol (3.909 × 10–2), benzonitrile (2.915 × 10–2), 1-octanol (1.916 × 10–2), 2-ethylhexyl acetate (1.220 × 10–2), o-dichlorobenzene (0.666 × 10–2), anisole (0.688 × 10–2), and mesitylene (0.246 × 10–2). The solubility of 3(5)-nitropyrazole was fitted using the Apelblat equation, λh equation, NRTL model, and van’t Hoff model. The fitting results were evaluated using average relative deviation and RMSD. The NRTL model exhibited the best overall performance. The use of Hansen solubility parameters for solubility prediction and analysis has certain limitations.
研究领域:
化学工程
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Nuo Dong,Jiayi Cao,Xinru Li,Lin Zhou,Bin Su
Nitrophenol isomers (NPs), namely, ortho-, meta-, and para-nitrophenol (o-NP, m-NP, and p-NP) are an important class of organic compounds widely employed in industrial fields. Due to their high chemical stability, resistance to natural degradation, and toxicity, NPs pose significant risks to both the environment and human health. Their discriminative detection is of paramount significance; however, it is highly challenging because of the structural and physicochemical similarities of NPs. Herein, we present a fluorine-doped tin oxide (FTO) electrode comodified with a covalent organic framework (COF) membrane and gold nanoparticles (designated as gcFTO) as a powerful sensing platform for the selective detection of NPs. The unique structural characteristics and physicochemical properties of the COF, together with the catalytic activity of comodified gold nanoparticles, precisely modulate the electrochemical redox behaviors of NPs. In particular, the electrochemically reduced intermediates of NPs can be stabilized and accumulated by the COF, thus allowing their detection via anodic stripping analysis of the reduced intermediates. Furthermore, the COF can also modulate the oxidation behaviors of these intermediates, leading to well-separated oxidation peak potentials that enable accurate identification and quantification of each NP. It is also demonstrated that gcFTO exhibits excellent performance in the analysis of NPs in real environmental conditions, including river water and soil. This work highlights the potential of COF-based electrochemical sensors for the selective detection of structurally similar pollutants, providing an efficient and accurate tool for environmental monitoring and industrial quality control.
研究领域:
分析化学
·
环境科学
·
材料科学
·
电化学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Feng Zhang,Han Lv,Xuanyi Wang,Li Wang,Yanli Wei
Background Based on the biocompatibility and excellent photoluminescence, sulfur quantum dots (SQDs) have been applied to detect metal ions, lactate dehydrogenase, tartrazine and other compounds. But most of the reported sensing SQDs have a single emission, which is greatly affected by external conditions such as sensing environment, photobleaching, and other factors, and then decreasing the accuracy of sensing system, especially for the sensing in real samples. This often requires more accurate and reliable ratio fluorescent detection to overcome these drawbacks based on its self-correction to environmental interference. (86 words). Results Herein, Rhodamine 6G modified SQDs (Rho-6G-SQDs) with dual emission at 414 nm and 516 nm were synthesized, which are independent on the excitation wavelength and possess great stability. The emission of Rho-6G-SQDs at 414 nm can be significantly quenched by p -nitrophenol through the static quenching and photoinduced electron transfer, along with a visible color change of solution from blue to green under ultraviolet light. Based on this, a dual-channel sensing system was developed for the ratio fluorescent and colorimetric sensing of p -nitrophenol. The system has a rapid fluorescence response towards p -nitrophenol in the linear range of 0.117–20.0 μM and LOD as 35.6 nM (3σ/k) and colorimetric sensing with the linear correlation up to 200 μM and LOD of 9.90 nM (3σ/k). The sensing application for p -nitrophenol in sewage water sample achieved the spiked recovery from 99.3 % to 110 %. (138 words). Significance This is the first attempt to prepare fluorescent SQDs using small organic dye molecules as passivators instead of polymers. The developed dual-channel sensing system based on Rho-6G-SQDs provides great convenience for more accurate and effective p -nitrophenol detection in real water samples at low concentrations. (44 words).
研究领域:
分析化学
·
材料科学
·
环境监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2025
·
IF 3.8
Sun Tao,Shen Xin,Yang Xinyu,Qi Haolong,Yang Kexin,Xing Yilin,You Mengyi,Duan Mengyao,Cai Zhiqiang,Nardiello Donatella,Quinto Maurizio,Liu Xianming,Zhang Shusheng
Cyclotriveratrylene (CTV) possesses a rigid and bowl-shaped architecture with a π -electron-rich cavity. In this work, CTV modified with C10 alkyl chains (CTV-C10) has been synthesized and used for the first time as a stationary phase for gas chromatography (GC) analysis. The statically coated CTV-C10 column showed moderate polarity and high column efficiency (3446 plates m −1 , determined by n -dodecane at 120 °C). Due to its nanoscale channels, the CTV-C10 column displayed a strong affinity for aromatic compounds. Compared with CTV and commercial HP-5 and HP-35 columns, the CTV-C10 column exhibited better performance for the critical resolution of dibromobenzene, dichlorobenzene, and chloronitrobenzene isomers. Moreover, CTV-C10 columns showed 0.02%, 0.09%, and 4.96% repeatability RSD values for intra-day, inter-day, and between-columns, respectively. This study demonstrated the feasibility of CTV-C10 columns, providing a new perspective for developing selective nanoscale separation channels through CTV stationary phases in chromatographic analysis. Graphical abstract
研究领域:
分析化学
·
分离科学
·
材料科学
·
色谱学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 8
·3964-3973
·
IF 2.936
Li Sun,Yuechao Yin,Pengcheng Lv,Wenxian Su,Lixin Zhang
The controllable synthesis of Au–Ag alloy nanoparticles (NPs) without any hazardous or expensive chemical agent has been a challenge. This paper reports on the Chinese wolfberry fruit extract-assisted synthesis of Au–Ag alloy NPs with homogeneous composition, uniform alloy microstructure and a small average size less than 15 nm. The composition and the surface plasmon resonance (SPR) wavelength of Au–Ag alloy NPs could be linearly adjusted by the synthesis time in one-pot. Au–Ag alloy NPs were characterized by means of various techniques, and then their synthesis mechanism was discussed. The obtained Au–Ag alloy NPs were used as photocatalysts for the reduction reactions of 2-, 3-, and 4-nitrophenol and exhibited superior photocatalytic activity and stability. The rate constants of the above photocatalytic reactions could be linearly tuned by the composition of the Au–Ag alloy NPs and also by their addition amount, displaying a new method to control the rate constant. Furthermore, based on the controllable synthesis, the rate constant could even be predetermined just through setting the synthesis parameters of the Au–Ag alloy NPs.
研究领域:
纳米技术
·
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2018
·
IF 4.244
Na Xiao,Shi Gang Liu,Shi Mo,Na Li,Yan Jun Ju,Yu Ling,Nian Bing Li,Hong Qun Luo
p -Nitrophenol ( p -NP) contaminants seriously endanger environmental and living beings health, hence to establish a sensitive and selective method is of great importance for the determination of p -NP. In this work, boron and nitrogen co-doped carbon dots (B,N-CDs) were synthesized by one-step hydrothermal method using 3-aminophenylboronic acid as the sole precursor. The product was characterized through high-resolution transmission electron microscopy, fluorescence spectroscopy, UV–visible absorption spectroscopy , X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. Without any functionalized modification, B,N-CDs can be directly applied as a ‘turn-off’ fluorescent probe for rapid, highly selective, and sensitive detection of p -NP. The fluorescent sensor based on the B,N-CDs exhibited a broad linear response to the concentration of p -NP in the range of 0.5 − 60 μM and 60 − 200 μM, respectively, and provided a detection limit of 0.2 μM. It was found that only the absorption spectrum of p -NP has a wide overlap with the fluorescence excitation and emission spectra of B,N-CDs compared to those of other representative analogues. The response mechanism was due to the inner filter effect and the formation of dynamic covalent B-O bonds between B,N-CDs and p -NP, which endowed the sensing platform with the rapid response and high selectivity to p -NP. Finally, the sensor showed the practicability of p -NP determination in environmental water samples.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CATALYSIS
·
2018
·
IF 6.759
Yujie Song,Hao Wang,Shijing Liang,Yan Yu,Liuyi Li,Ling Wu
The photoalkylation of nitroarenes with benzyl alcohols in one pot at room temperature and 1 atm N 2 was achieved over the Pd/H 1.07 Ti 1.73 O 4 ·H 2 O nanosheets. The sample shows efficient photocatalytic activity with high conversion of nitrobenzene (99%) and selectivity of secondary amine (85%). This flexible photocatalytic system is also applicable to other nitroarenes with high efficiency. Results of in situ FTIR, DRS, and in situ ESR revealed that the benzyl alcohol and nitrobenzene molecules can bind with the surface Lewis and Brønsted acid sites in the catalyst via the H O⋯Ti and NO 2 ⋯H O Ti species. The formation of surface coordination species results in not only the activation of reactant molecules via surface electron transfer, but also the expanded visible light absorption of the catalyst. Moreover, in situ ESR suggested that the surface coordination can also facilitate the formation of oxygen vacancies in catalysts, which can greatly promote the exposure of Lewis sites and enhance the activation of reactant molecules. Finally, a possible hydrogen transfer strategy over the sample is proposed on a molecular level.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Royal Society Open Science
·
2021
·Vol. 8
·期 4
·
IF 2.963
Yang Li,Zhanguo Li,Zhen Liu,Shitong Han,Sanping Zhao,Keping Yan,Anna Zhu
This paper demonstrated the effects and influencing factors in degrading aniline by gaseous streamer corona plasma along water surface under different discharging gas atmospheres. For aniline with an initial concentration of 100 mg l−1, the degradation was fastest when the reactor was not ventilated, and the degradation rate is 98.5% under 7.5 min treatment. While the degradation was slowest when Ar was ventilated, the degradation rate is 98.6% after treatment for 60 min. Some active particles were detected using a multi-channel fibre-optic spectrometer during the discharge, such as Ar, OH, N2, N2+ and N. In particular, NO was detected during air discharge. The NO and N2+ could produce NO3−; then generated nitric acid would affect the pH value of the solution. The intermediate product by N2 discharge is nitrophenol, and nitrophenol would be converted to p-benzoquinone. The O2 discharge could produce an intermediate product of aminophenol. The intermediate products in Ar discharge were in small amounts and the final mineralization effect was the best.
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
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 43
·期 17
·6772-6780
·
IF 3.069
Yuxi Meng,Hanyu Gao,Shuang Li,Fang Chai,Lihua Chen
Herein, high efficiency and recyclable Cu–Ag hybrid catalyst (Trp–Cu–Ag) NPs were prepared by the hydrothermal method using L-tryptophan as a reducing agent and protecting reagent. The structure, morphology and catalytic properties of the Trp–Cu–Ag NPs were investigated in detail. The binary Trp–Cu–Ag NPs were assembled using Trp–Cu nanosheets and Ag nanoparticles through a one-step process. The developed Trp–Cu–Ag NPs show excellent catalytic performance in the reduction of nitrophenols (4-nitrophenol, 2-nitrophenol and 3-nitrophenol). Meanwhile, the Trp–Cu–Ag NPs exhibited a stable conversion efficiency of over 95% for more than 10 recycles in the reduction of 4-nitrophenol. The binary Trp–Cu–Ag NPs can also catalytically reduce K3(Fe(CN)6) in the presence of a NaBH4 aqueous solution with high efficiency. All in all, the obtained Trp–Cu–Ag NPs show potential as a catalyst in practical environmental protection applications due to their cost-effective and recyclable features.
研究领域:
材料科学
·
环境科学
·
催化化学
✓ 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）