JOURNAL OF FLUORESCENCE
·
2024
·Vol. 35
·期 4
·2059-2069
·
IF 2.6
Wu Xinru,Ruan Chen,Zhu Xinyue,Zou Lina,Wang Rong,Li Gaiping
Design and fabrication of integrated multifunctional probes with intrinsic catalytic and detection abilities is of great importance to simplify the operation in biosensing application with high sensitivity. Herein, dual-emitting lanthanide coordination polymers (Ln-CPs) were facilely prepared by self-assembly of guanine diphosphate (GDP), terephthalic acid (TA), Tb 3+ and Cu 2+ designated as Tb/Cu-GDP/TA CPs. The doped Cu 2+ endowed CPs with obviously enhanced peroxidase mimicking activity compared with free Cu 2+ . In the presence of H 2 O 2 , the probe catalyzed the oxidation of TA generating a new blue fluorescent product, while the fluorescence of Tb 3+ decreased simultaneously. Therefore, a new sensitive ratiometric fluorescent sensor for H 2 O 2 has been developed with a good linear range from 0.01 to 300 μM and limit of 1.62 nM. Moreover, the proposed platform could be extended to GSH ratiometric assay in the presence of H 2 O 2 , and interestingly, the detection performance could be easily adjusted by adding different concentration of H 2 O 2 . This work will facilitate the development of luminescent nanoenzymes based on Ln-CPs to construct the simple ratiomatric sensing platform.
研究领域:
材料科学
·
纳米技术
·
生物分析
·
配位化学
·
荧光传感
✓ 已验证
DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2022
·Vol. 85
·期 6
·1813-1823
·
IF 2.43
Zhong Dan,He Fu,Ma Wencheng,Wu Yichuan,Dong Jiaju
In this study, we investigated using the main composition of pipe deposits from water distribution networks as catalyst to activate dual-oxidant H 2 O 2 /Na 2 S 2 O 8 system to produce radicals for perchloroethylene and chloramphenicol removal. According to the results, the degradation efficiency of perchloroethylene by H 2 O 2 /Na 2 S 2 O 8 system was 92.05% within 8 h. Due to the slow conversion between ≡Fe 3+ and ≡Fe 2+ , the hydroxylamine was introduced to reduce reaction time. As for the results, the degradation efficiency of chloramphenicol in the H 2 O 2 /Na 2 S 2 O 8 system with hydroxylamine assistance was 73.31% within 100 min. Meanwhile, several key affecting factors and the kinetic models were investigated. The primary radicals were identified by electron paramagnetic resonance and radical scavenging tests. Eleven degradation products were confirmed by high-resolution liquid chromatography-mass spectrometry. The result of this study provided the theoretical basis for resource utilization of pipe deposits in water treatment in case of emerging contamination events.
研究领域:
环境科学
·
水处理
·
材料化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yuhua Dong,Jianbin Zheng
The work presented that by regulating the proportion between cobalt and 2-methylimidazole in distilled water, a series of Co-based imidazolate framework compounds with diverse shapes were synthesized at ambient temperature. The morphology and structural characteristics of the compounds were surveyed by scanning electron microscope, energy disperse spectra, powder X-ray diffraction and N 2 absorption-desorption. It was found by cyclic voltammetry that the zeolitic imidazolate framework compound synthesized at a ratio of 1:20 had the best electrocatalytic activity to H 2 O 2 reduction, therefore, the compound was chosen to fabricate a H 2 O 2 electrochemical sensor. Electrochemical studies indicated that the sensor had a determination limit of 0.7 μM and short response time within 3 s. The catalytic current was linear with H 2 O 2 concentration from 2.5 to 212.5, 212.5 to 1662.5 and 1662.5 to 6662.5 μM and the sensitivity were 12.2, 5.3 and 2.4 μA mM −1 cm −2 , respectively. Furthermore, the proposed sensor showed a good anti-interference capacity, repeatability and stability.
研究领域:
分析化学
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材料科学
·
电化学
·
生物传感器
·
纳米材料
·
环境监测
✓ 已验证
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2017
·
IF 6.844
Kun Zhao,Yan Su,Xie Quan,Yanming Liu,Shuo Chen,Hongtao Yu
Electrochemical synthesis of hydrogen peroxide (H 2 O 2 ) via two-electron pathway of oxygen reduction reaction is a promising alternative to the current anthraquinone process. The H 2 O 2 production from O 2 is a competing reaction with four-electron O 2 reduction to H 2 O, and the selectivity is related to the adsorption energy of the OOH intermediate on electrocatalysts surface. Generally, the properties for binding of OOH intermediate on catalysts can be controlled by changing its electronic structure. Herein, the electronic structure of porous carbon materials was tuned by doping different types and contents of fluorine species. The yield of H 2 O 2 generation depended on the F content and the best catalytic activity toward H 2 O 2 electrosynthesis was obtained with F content of 3.41 at.%. The resultant F-doped porous carbon (FPC) catalysts exhibited good H 2 O 2 selectivity of 97.5–83.0% and the H 2 O 2 production rate could reach 112.6–792.6 mmol h −1 g −1 over the potential range of 0.2 V to −0.3 vs. RHE (pH 1). The density functional theory (DFT) calculations and experiments revealed that the incorporation of CF 2, 3 into carbon plane promotes the activation of O 2 molecule and facilitates desorption of OOH intermediate, which was crucial to H 2 O 2 synthesis.
研究领域:
材料科学
·
电化学
·
环境科学
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Guangchao Hu,Haokun Li,Fangqin Cheng,Xiangtao Huo,Min Guo,Mei Zhang
A low-cost, porous carbon aerogel derived from lignite has been successfully developed as an electrode material for supercapacitors designed for high-efficiency energy storage. The assembled device achieves an energy density of 7.92 Wh kg −1 , making it highly competitive. Unlike traditional methods requiring extensive cleaning, this work employs a mild, acid-free H 2 O 2 oxidation strategy to directly convert lignite into soluble precursors without extra impurity removal steps. This green approach significantly simplifies the preparation process and reduces chemical consumption. The selective oxidation introduces abundant oxygen-containing groups (e.g., -COOH, -OH), which facilitate the formation of a robust sol-gel network and induce a hierarchical microporous–mesoporous architecture (average pore size: 3.76 nm) during carbonization. Consequently, the optimized material (CA-700) delivers a specific capacitance of 252.65 F g −1 at 0.5 A g −1 . When assembled into a symmetric supercapacitor, the device exhibits excellent cycling stability, retaining 85.11% of its initial capacitance after 10,000 cycles. This study proposes a low-cost, green, and efficient process for upgrading abundant low-grade coal into high-value-added electrode materials, offering a more economical and environmentally friendly pathway for preparing supercapacitor electrodes.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Shipeng Zhang,Shengzhe Wang,Luyu Guo,Zhipeng Fan,Zaixing Li,Nannan Wang,Xianru Li,Keda Yang,Lei Ma
Efficient and environmentally friendly solutions to water pollution remain a global challenge. Traditional heterogeneous Fenton systems are constrained by low reaction efficiency and severe non-productive decomposition of H 2 O 2 . In this study, the environmentally friendly ligand N-(2-acetamido)iminodiacetic acid (ADA) is introduced for the first time into the Ce 0.2 La 0.8 FeO 3 (CLFO) Fenton system. With ADA regulation, the degradation efficiency of dimethyl sulfoxide (DMSO) in the CLFO+ADA system reaches 96.1%, with the reaction rate constant increasing 19.0-fold compared to the CLFO system. ADA regulation enhances the effective utilization of H 2 O 2 to generate •OH by 20.7-fold, resulting in a 92.6-fold increase in •OH yield during the initial stage and maintaining high catalytic activity over a wide pH range (3.0–9.0). ADA addition markedly promotes Fe 2+ /Fe 3+ and Ce 3+ /Ce 4+ cycling, improving both the efficiency and stability of CLFO, with the system retaining high performance after five cycles. Mechanistic investigations reveal that ADA adsorption on the CLFO surface regulates the surface charge and reduces the energy barrier for conversion of adsorbed *OH to •OH during H 2 O 2 decomposition, thus markedly promoting •OH generation and improving H 2 O 2 utilization. The innovative application of ADA ligand regulation in Fenton-like systems may provide new insights for developing efficient and green water-pollution treatment technologies
✓ 已验证
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Cheng Cheng,Zhaokang Zheng,Zhen Liu,Zhiwei Chen,Xingying Li,Weiyong Liu,Aiwu Wang,Cangtao Zhou
Improving the ease of operation and portability of hydrogen peroxide (H 2 O 2 ) detection in daily production and life holds significant application value. However, it remains a challenge to achieve rapid colorimetric detection of H 2 O 2 and color change quantification. In this study, we achieved rapid and visual detection of H 2 O 2 by MoOx (2 ≤ x ≤ 3) nanoparticles with rich oxygen vacancies using machine vision. As the concentration of H 2 O 2 increases, the detection system exhibited a visible multi-color change from blue to green and then yellow and the absorption peak near 680 nm measured by the UV–visible spectrophotometer gradually decreased. With excellent sensitivity, a wide linear range of 0.1–600 μmol/L, concentrations as low as 0.1 μmol/L can be detected with good selectivity towards H 2 O 2 . The sensing mechanism of detecting H 2 O 2 by the change of oxygen vacancies in MoOx was revealed through characterization methods such as XPS, EPR, and DFT. In addition, the Hue, Saturation, Value (HSV) visual analysis system based on MoOx was constructed to assist in the rapid, portable, and sensitive monitoring of H 2 O 2 in practical application scenarios. This work offers an easy-to operate, low cost, and convenience for achieving rapid colorimetric determination of H 2 O 2 and has broad application prospects in daily life and industrial production.
研究领域:
分析化学
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2012
·
IF 2.237
Hong-Xing Zhang,Jia-Jun Gao,Hong Meng,Ying-zhou Lu,Chun-Xi Li
A novel integrated process is proposed for the catalytic oxidative desulfurization of fuel oil, in which the oxidant H2O2 is in situ generated by oxidizing 2-propanol with oxygen, and its feasibility is evaluated in terms of the S-conversion of 3-methylthiophene (3-MT), benzothiophene (BT), and dibenzothiophene (DBT) in octane under varying conditions. The catalysis of [π-C5H5NC16H33]3[PW4O16] is found to be much superior to H3PW12O40 and [(C4H9)4N]3[PW12O40] due to its good dispersivity in oil and adsorptivity for S-compounds. Some influencing factors for the S-conversion were studied, viz., time, temperature, various S-compounds, and the amount of 2-propanol, initiator, oxygen, and catalyst. All factors that favor the production of the 2-propanol radicals affect the desulfurization rate remarkably. Both BT and DBT can be removed efficiently at mild conditions (1.4 MPa O2, 90 °C) in 6 h with S-conversion above 96%, and the resulting sulfones can be separated via settling or filtration.
研究领域:
化学工程
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2012
·
IF 4.173
Chao Zhou,Naiyun Gao,Yang Deng,Wenhai Chu,Wenlei Rong,Shengdong Zhou
Disinfection by-products (DBPs) are a great challenge to our drinking water security. Particularly, nitrosamines (NAms), as emerging DBPs, are potently carcinogenic, mutagenic, and teratogenic, and have increasingly attained public attention. This study was to evaluate the performance of the NAms degradation by the ultraviolet (UV) irradiation (253.7 nm) in the presence of hydrogen peroxide (H 2 O 2 ). In the UV/H 2 O 2 system, hydroxyl radicals (OH ), a type of nonselective and powerful oxidant, was produced to attack the molecules of NAms. Factors affecting the treatment efficiency, including the H 2 O 2 dosage, initial NAms concentration, UV irradiation intensity, initial solution pH, and inorganic anions present in water, were evaluated. All the NAms degradation exhibited a pseudo-first-order kinetics pattern. Within 60 min, 0.1 mg/L of any NAms could be almost decomposed except NDPhA that required 120 min for complete removal, at 25 μmol/L H 2 O 2 and at initial pH 7. Results demonstrate that the UV/H 2 O 2 treatment is a viable option to control NAms in water.
研究领域:
环境科学
·
饮用水安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Analysis and Testing
·
2018
·Vol. 2
·期 1
·69-76
·
IF 0
Zhen Wen-Yao,Bai Jing,Jia Xiao-Dan,Wu Lie,Jiang Xiu-E
The local tumor hypoxia has become one of the main obstacles for photodynamic therapy (PDT).To break through this barrier, the fabrication of O 2 -evolving nanoplatform has been more significant. Herein, the uniform methylene blue (MB)–bovine serum albumin (BSA)–Fe(III) nanoparticles (MB–BSA–Fe(III) NPs) were successfully synthesized by biomineralization approach. MB–BSA–Fe(III) NPs show high loading capacity of MB, and Fe(ΙΙΙ) has excellent catalytic performance towards abundant H 2 O 2 in cancer cells to generate O 2 , overcoming tumor hypoxia. All these combination effects remarkably increase the therapeutic efficiency of PDT, resulting in almost complete destruction of cancer cells. Most importantly, MB–BSA–Fe(III) NPs exhibit T 2- magnetic resonance imaging, which have the potential for precise visualization of the tumor location. Our results demonstrate that MB–BSA–Fe(III) is a novel H 2 O 2 -responsive and O 2 -evolving nanoplatform and it has great potential for clinical applications such as cancer diagnosis, treatment or drug delivery.
研究领域:
纳米医学
·
肿瘤学
·
生物材料科学
✓ 已验证
产品关联
DOI
WATER ENVIRONMENT RESEARCH
·
2020
·Vol. 92
·期 12
·2049-2059
·
IF 1.369
Mengyi Wu,Yulin Tang,Qianhong Liu,Zhenjiao Tan,Mu Wang,Bin Xu,Shengji Xia,Shun Mao,Naiyun Gao
In this study, UV-LED was employed as a novel light source to investigate the degradation of a representative antibiotic compound, chloramphenicol (CAP), in the absence or presence of H 2 O 2 . The UV-LED irradiation showed a higher capability for degradation of CAP than conventional UV-Hg vapor lamps. Effects of the initial CAP concentration, UV wavelength, and light intensity on the degradation of CAP by UV-LED were evaluated. Introduction of H 2 O 2 evidently enhanced the degradation efficiency of CAP due to the production of reactive hydroxyl radicals. Results showed that the UV-LED/H 2 O 2 removed CAP by up to 95% within 60 min at pH 5.0, which was twice as that achieved by the UV-LED alone. The degradation products were identified to propose plausible degradation pathways. Moreover, the formation potentials of typical carbonaceous disinfection by-products (C-DBPs) and nitrogenous disinfection by-products (N-DBPs) were assessed for the CAP polluted water treated by the UV-LED alone and UV-LED/H 2 O 2 processes. Results indicate unintended formation of certain DBPs, thereby highlighting the importance of health risk assessments before practical application. This study opens a new avenue for developing environment-friendly and high-performance UV-LED photocatalytic reactors for abatement of CAP pollution in water. Practitioner points UV-LED bore higher capability to degrade CAP than low-pressure Hg lamp. The optimal performance to degrade CAP can be achieved at the UV wavelength of 280 nm. The degradation efficiency under UV-LED/H 2 O 2 process was double of that under UV-LED process. TCM, DCAN, and TCNM formation were higher under the existence of UV-LED radiation. The addition of H 2 O 2 had greater influence on the formation of DCAcAm than the introduction of UV-LED.
研究领域:
环境科学
·
水处理技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2020
·Vol. 27
·期 13
·7791-7803
·
IF 4.21
Tang Bin,Xu Chengna,Zou Fan,Zhou Ji,Zhang Jin,Li Jingliang,Wang Jinfeng,Wang Xungai
Abstract Palladium nanoparticle (PdNP) loaded cotton fabrics were successfully prepared through in situ synthesis of PdNPs via heating. The resulting PdNP-treated cotton fabrics showed color originated from the localized surface plasmon resonance (LSPR) effect of PdNPs, with satisfactory color fastness to washing and rubbing, and enhanced UV protection properties. The PdNP-treated cotton greatly accelerated the reduction reaction of 4-nitrophenol (4-NP) by sodium borohydride, exhibiting distinct catalytic activity. More importantly, the PdNP-treated cotton fabric displayed enzyme mimicking activity to catalyze the oxidation of a chromogenic enzymatic substrate (3,3′,5,5′-tetramethylbenzidine) in the presence of hydrogen peroxide, which provides a visual sensing platform for hydrogen peroxide. This work demonstrated a versatile approach to fabricate PdNP-treated cotton fabrics with multiple functions. This study on the surface modification of cotton fabrics with PdNPs could promote the practical applications of functional fibrous materials in catalysis and sensing fields. Graphic Abstract
研究领域:
材料科学
·
分析化学
✓ 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）