SENSORS AND ACTUATORS B-CHEMICAL
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2016
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IF 4.758
Shan Huang,Zhichun Si,Xuankun Li,Jinshuo Zou,Youwei Yao,Duan Weng
Au nanoparticles and reduced graphene oxide (r-GO) co-modified TiO 2 nanotube arrays (TNTs) were prepared by a facile and green strategy based on the electro-deposition technology for detecting H 2 O 2 , O 2 and nitrite. As-prepared Au/r-GO/TNTs electrode was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The results clearly demonstrate that the successful attachment of r-GO sheets and narrow-range distribution of Au nanoparticles on TNTs . The reduced grapheme oxide sheet can help to improve the electronic conductive performance of TNTs and prevent the agglomeration of Au nanoparticles. Electrochemical studies reveal that the Au/r-GO/TNTs electrode exhibit excellent electrocatalytic performance toward the reduction of H 2 O 2 . Under the optimal experimental condition, the sensor has a quick response to H 2 O 2 at −0.3 V with a high sensitivity (1011.35 mA M −1 cm −2 ), wide linear range (0.01–22.3 mM) and low detection limit (0.006 μM). In addition, the sensor also has good stability and excellent selectivity. Moreover, the established Au/r-GO/TNTs electrode also shows high sensitivities towards dissolved O 2 and nitrite ions, which has great potential for the development of electrochemical sensors, molecular bioelectronics devices and biosensors.
研究领域:
生物传感器
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电化学检测
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材料科学
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DOI
高影响因子
Catalysts
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2021
·Vol. 11
·期 11
·1370
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IF 4.146
Fei Chen,Jiesen Guo,Dezhong Meng,Yuetong Wu,Ruijin Sun,Changchun Zhao
Elbaite is a natural silicate mineral with a spontaneous electric field. In the current study, it was selected as a pyroelectric catalyst to promote hydrogen peroxide (H2O2) for dye decomposition due to its pyro-electro-chemical coupling. The behaviors and efficiency of the elbaite/H2O2system in rhodamine B (RhB) degradation were systematically investigated. The results indicate that the optimal effective degradability of RhB reaches 100.0% at 4.0 g/L elbaite, 7.0 mL/L H2O2, and pH = 2.0 in the elbaite/H2O2system. The elbaite/H2O2system exhibits high recyclability and stability after recycling three times, reaching 94.5% of the degradation rate. The mechanisms of RhB degradation clarified that the hydroxyl radical (·OH) is the main active specie involved in catalytic degradation in the elbaite/H2O2system. Moreover, not only does elbaite act as a pyroelectric catalyst to activate H2O2in order to generate the primary ·OH for subsequent advanced oxidation reactions, but it also has the role of a dye sorbent. The elbaite/H2O2system shows excellent application potential for the degradation of RhB.Keywords:tourmaline;elbaite/H2O2system;pyroelectric catalyst;dye wastewater;RhB degradation
研究领域:
环境科学
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化学工程
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材料科学
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DOI
高影响因子
LANGMUIR
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2021
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IF 3.882
Bowen Liu,Chuanbiao Bie,Yong Zhang,Linxi Wang,Youji Li,Jiaguo Yu
The design of photocatalysts with hierarchical pore sizes is an effective method to improve mass transport, enhance light absorption, and increase specific surface area. Moreover, the construction of a heterojunction at the interface of two semiconductor photocatalysts with suitable band positions plays a crucial role in separating and transporting charge carriers. Herein, ZIF-8 and urea are used as precursors to prepare hierarchically porous ZnO/g-C3N4 S-scheme heterojunction photocatalysts through a two-step calcination method. This S-scheme heterojunction photocatalyst shows high activity toward photocatalytic H2O2 production, which is 3.4 and 5.0 times higher than that of pure g-C3N4 and ZnO, respectively. The mechanism of charge transfer and separation within the S-scheme heterojunction is studied by Kelvin probe, in situ irradiated X-ray photoelectron spectroscopy (ISI-XPS), and electron paramagnetic resonance (EPR). This research provides an idea of designing S-scheme heterojunction photocatalysts with hierarchical pores in efficient photocatalytic hydrogen peroxide production.
研究领域:
材料科学
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化学工程
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环境科学
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产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
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2022
·Vol. 223
·期 17
·2200128
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IF 2.996
Yafang Zhang,Guowei Ding,Fengqing Gai,Kun Zhang,Zhiming Gou,Yujing Zuo
In this study, a simple and nontoxic polysiloxane fluorescent probe (P1) is synthesized to detect iron ions, copper ions, and hydrogen peroxide (H 2 O 2 ). Interestingly, both Fe 3+ and Cu 2+ can gradually quench the fluorescence intensity of the probe, and H 2 O 2 can reproduce the probe quenched by Cu 2+ instead of Fe 3+ . The probe shows high selectivity and photostability, and the fluorescence intensity can keep at 95.77% after irradiation at 260 nm for 40 min. In addition, P1 can stably locate lysosome. With excellent property, the probe as lysosome tracker has broad application prospects in detection and biological imaging.
研究领域:
生物化学
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医学影像
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分析化学
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2022
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IF 4.831
Xinhui Hou,Yifan Song,Hengquan Zhou,Lei Guo,Guiying Li,Qian Tao
A novel turn-on fluorescent sensor for hydrogen peroxide (H 2 O 2 ) was prepared from chitosan (CS) coating mesoporous silica nanoparticles (MSNs) loaded with 1-(4-Aminophenyl)-1,2,2-triphenylethene (TPE-NH 2 ) and silver nanoparticles (AgNCs). The surface of MSNs was coated by CS as the gatekeeper and the template for loading of AgNCs. Because of the surface plasmon-enhanced energy transfer (SPEET), AgNCs effectively quenched the fluorescence emission of nanoparticles. In the presence of H 2 O 2 , AgNCs can be oxidized to Ag + , resulting in the recovery of fluorescence. This fluorescent sensor was characterized with respect to its chemical composition, morphological features and optical properties by means of FTIR, XRD, TGA, SEM, TEM, XPS, UV–Vis and fluorescence spectroscopy. The MSN/TPE-CS@Ag nanoparticles showed good sensitivity and selectivity for H 2 O 2 even with various interfering ions and agents. Under optimized conditions, the detection limit for H 2 O 2 was 0.64 μM in the rage of 1–300 μM. The feasibility of the practical application of this probe was confirmed by accurate quantitative of H 2 O 2 in practical samples.
研究领域:
材料科学
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分析化学
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纳米技术
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生物传感器
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产品关联
DOI
PubMed
高影响因子
Polymers
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2022
·Vol. 14
·期 15
·3005
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IF 4.967
Zixiang Qu,Demeng Zhang,Chuane Wang,Sheng Tian,Yunlong Deng,Dawei Qin,Hongdong Duan
A novel fluorescein-based probeFLA-Boewas developed for detecting H2O2. Modified by 2-Bromomethylphenylboronic acid pinacol ester,FLA-Boeis a Fluorescein derivative with eminent photostability and remarkable H2O2sensitivity and selectivity.FLA-Boewas utilized to synthesize hydrogel sensors in the manner of guest–host interaction by taking advantage of its aforementioned features. The hydrogel sensor can be used to detect H2O2effectively in both flowing and static water environments with satisfactory performance. It is expected that this application may open a new page to develop a neoteric fluorescent property analysis method aiming at H2O2detection.Keywords:hydrogen peroxide;hydrogel sensor;naked-eye detection
研究领域:
生物化学
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材料科学
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DOI
PubMed
高影响因子
Journal of Cleaner Production
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2021
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IF 9.297
Libing Chu,Jianlong Wang,Chuanhong Chen,Shijun He,László Wojnárovits,Erzsébet Takács
The advanced treatment of secondary effluent from an antibiotic wastewater treatment plant was investigated using ionizing radiation alone and combined with peroxymonosulfate (PMS)/H 2 O 2 oxidation . In the effluent, 3 antibiotics, including erythromycin (ERY), tetracycline (TC), sulfamethoxazole (SMX), and 7 groups of antimicrobial resistance genes (ARGs) and 12 bacterial classes were detected. Results showed that the content of antibiotics and ARGs could be reduced greatly by radiation. The removal of ERY, TC and SMX reached 87%, 80% and 48% respectively, while the abatement of ARGs, including erm B, erm T, erm F, maA/mel , sul 2, bla OXA , flo R and mef A reached 63–91%. The COD removal was only 16.8% at 25 kGy. The enhancement with PMS addition was better than with H 2 O 2 addition during radiation. With 10 mM PMS addition, the removal efficiency of antibiotics and COD increased to 70–98% and 57.6%, compared to 55–97% and 45.1% with 10 mM of H 2 O 2 addition at 25 kGy. The PICRUSt analysis suggested that radiation at a dose of higher than 25 kGy could stimulate the bacterial activity for metabolism of amino acid, carbohydrate and energy, etc, but damage the genes coding for cellular and genetic information processing. The major ecological risk is derived from ERY (high level) and TC (medium level) in the effluent. The ecological risk of ERY and TC could be declined to medium level and low level, respectively after radiation with 10 mM PMS/H 2 O 2 addition at 25 kGy. However, the operating cost of EB/PMS processes was more than twice higher than that of EB/H 2 O 2 processes. Based on the tech-economic evaluation, ionizing radiation combined with H 2 O 2 was a promising technology for the advanced treatment of pharmaceutical wastewater.
研究领域:
环境工程
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污水处理
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辐射化学
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微生物学
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2022
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IF 24.319
Miaoli Gu,Yi Yang,Liuyang Zhang,Bicheng Zhu,Guijie Liang,Jiaguo Yu
Solar H 2 O 2 generated from O 2 and H 2 O is an economical and green protocol. However, most photocatalysts only perform well in the presence of sacrificial donors or the photocatalysts are composed by organic materials, thus hindering their applicability. Herein, an inorganic matrix, i.e. ZnIn 2 S 4 @BiVO 4 (ZIS@BVO), is constructed as a model catalyst for photocatalytic H 2 O 2 production in non-sacrificial systems. Excellent performance (1.8 mmol g −1 h −1 ) under visible-light is realized, and an apparent quantum yield of 5.18% is realized at 420 nm. Thorough investigation helps us to rationalize its exceptional performance and structural characteristics. Of note, the electron spin resonance spectroscopy results, in combination with scavenger capture experiments, reveal the discovery of an overlooked pathway. Specifically, except for the well-known two-electron oxygen reduction reaction (ORR), the involvement of 1 O 2 intermediate is verified during the H 2 O 2 generation. Beyond presenting high performance of the inorganic composites, this finding also discloses a different reaction path for H 2 O 2 production.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Xuefeng Zhang,Xiaowen Kang,Junyou Wu,Qin Yang,Yuejie Zhang,Jiahao He,Chao Zheng,Yingchun Yang,Zhixiang Ye
High energy consumption is the bottleneck in advanced oxidation processes (AOPs) for applying in eliminating refractory organic contaminants . Fenton catalysis is deemed to be the promising technology of AOPs to produce super-active hydroxyl radical ( ·OH) for tackling serious water environment pollution issues. Here, magnetic mesoporous sulfur-doped ferric oxide (PS-Fe) composite, prepared through simple co-precipitation method, was creatively introduced to activate hydrogen peroxide (H 2 O 2 ) to generate ·OH for degrading emerging antibiotic moxifloxacin (MOX). The catalytic activity of PS-Fe was significantly elevated by sulfurization to achieve a degradation efficiency of 97 % and total organic carbon removal exceeding 44 % (within 30 min). Besides, we investigated the effects of catalyst dosage and H 2 O 2 concentration, initial pH value, temperature, and humic acid concentration on MOX degradation. Quenching experiments results indicate that ·OH, O 2 · – , and 1 O 2 participated in the degradation process of MOX, and ·OH plays the predominant role. Additionally, possible activation mechanism is proposed and possible reaction intermediates are speculated. This work can offer a novel and reasonable interpretation for designing heterogeneous iron-based materials in activating H 2 O 2 to degrade pollutants.
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DOI
高影响因子
International Journal of Electrochemical Science
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2023
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IF 1.5
Yanqiong Zhu,Qinglan Miao,Baosan Han
Hydrogen peroxide (H 2 O 2 ) has been widely used in various industries, including food production, pollution control, and textile bleaching. Therefore,it is necessary to determine its content for the sake of environmental and food safety. Silver nanoparticles (AgNPs) doped carbon nanofibers (CNFs) were prepared using electrospinning followed by calcination under a N 2 atmosphere as a novel electrocatalyst for the sensitive detection of H 2 O 2 . The composition, structure, and morphology of CNFs doped with AgNPs (AgCNFs) were characterized using Raman spectroscopy, X-ray diffraction, and scanning electron microscopy. The electrocatalytic activity of AgCNFs towards H 2 O 2 reduction was evaluated using cyclic voltammetry and amperometry. As determined by electrochemical studies, the developed electrochemical sensor displayed a broad dynamic range of 0.01–50 mM and a detection limit of 3 μM ( S/N = 3).
研究领域:
材料科学
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分析化学
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环境科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Xiru Chen,Xinyue Gu,Chao Wang,Liuqing Huang,Dingding Wu,Hao Wu,Sijia Liang,Jingyi Ling,Cheng Gu
As a common plasticizer, phthalic acid esters (PAEs) have been widely employed to improve the flexibility and workability of polymetric materials, thus leading to their widespread distribution in soils and wastewater. Moreover, PAEs raised great public concerns due to their endocrine-disrupting effects, which could damage reproductive system and body development at low exposure dose. In the present study, a ferrihydrite-H 2 O 2 -bisulfite ternary system was developed to achieve efficient degradation of dimethyl phthalate (DMP). Our results showed that 86.6 % of total DMP could be removed within 240 min by the ferrihydrite-H 2 O 2 -bisulfite ternary system, in which the respective optimum concentration of ferrihydrite, H 2 O 2 and bisulfite was set as 1.0 g/L, 5.0 mM and 2.0 mM. For comparison, negligible DMP removal was observed in the binary systems of ferrihydrite-H 2 O 2 , ferrihydrite-bisulfite and H 2 O 2 -bisulfite. Hydroxyl radical (•OH) was identified as the dominant reactive species for DMP degradation based on the results of electron paramagnetic resonance (EPR) analysis and free radicals quenching experiments. By complexing with iron species, bisulfite could accelerate the reduction of Fe(III) to Fe(II), thus increasing the generation of •OH by ∼4 times in the heterogeneous ferrihydrite-H 2 O 2 system. Furthermore, ferrihydrite exhibited excellent recyclability without any modification as indicated by the negligible decrease in the catalytic degradation efficiency of DMP. Thus, in addition to efficient degradation of PAEs in wastewater, our study would shed light on the in-situ soil remediation technology on the basis of bisulfite-assisted heterogeneous Fenton-like reactions.
研究领域:
环境科学
·
化学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2023
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IF 10.9
Haozhen Zhang,Jingjing Liu,Yong Zhang,Bei Cheng,Bicheng Zhu,Linxi Wang
Constructing step-scheme (S-scheme) heterojunctions has become a popular strategy for efficient photocatalytic H 2 O 2 generation. Herein, we in situ grew BiOBr nanosheets (NSs) on a Schiff-base covalent organic framework (COF) with large π-conjugated structures to prepare S-scheme BiOBr/COF photocatalysts for H 2 O 2 synthesis. The highest photocatalytic H 2 O 2 production performance of the composite sample constituting the S-scheme heterojunction is 3749 µmol g −1 h −1 , which was 1.85 and 27 times the rates of COF and BiOBr, respectively. The construction of S-scheme heterojunction contributed to efficient carrier transfer and separation in space and enhanced redox power. Moreover, the lying-down O 2 -adsorption configuration on the COF surface favors the concerted two-electron O 2 reduction process, which greatly reduced the reduction potential requirement for O 2 -to-H 2 O 2 conversion. The synergy between the S-scheme heterojunction and the unique O 2 –COF interaction boosted photocatalytic H 2 O 2 production activity.
研究领域:
材料科学
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环境科学
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化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）