MICROCHIMICA ACTA
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2024
·Vol. 191
·期 10
·1-12
·
IF 5.3
Xiao Rongsheng,Dai Hongliang,Liu Xingyu,Qi Jingwen,Bao Meishuo,Wang Xingang,Li Mingde,Zhang Wuxiang,Yan Dengxin
A novel colorimetric approach specifically designed to effectively identify the presence of 3-aminophenol (3-AP) in environmental water is introduced. Briefly, a nitrogen-doped carbon-supported cobalt nanozyme (Co@CN-1) was synthesized and utilized to improve the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of peroxymonosulfate (PMS). Comparative catalytic reactions confirmed that the performance of PMS as an activator exceeds that of hydrogen peroxide catalytically by a factor of 3.5. The catalytic reaction parameters underwent optimization, further resulting in the derivation of a linear detection equation for 3-AP, expressed as inhibition rate (IR%) = 3.35[3-AP]—4.36 (0–20 μM, R 2 = 0.994) and IR% = 1.43[3-AP] + 31.87 (20–36 μM, R 2 = 0.992), with the limit of detection (LOD) of 2.84 μM. The linear relationship between 3-AP concentration and the conversion of color to grayscale value (GSV) was established by smartphones, expressed as GSV = 1.28[3-AP] + 147.10 ( R 2 = 0.972). Density functional theory calculations revealed that Co acts as the preferred active site for donating electrons in PMS activation. This work provides a rapid and accurate approach for monitoring 3-AP concentration, enabling real-time analysis and potentially contributing to environmental and ecological studies. Graphical Abstract
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 Cleaner Production
·
2023
·
IF 11.1
Chen Fang,Zixuan Hao,Yanlan Wang,Yingping Huang,Di Huang,Xiang Liu
Nanoreactors have been enlightened by enzymes to benefit from particular confinement for purpose of the acceleration of catalytic reactions and rendering them specific. Herein, we have first designed and synthesized the high-efficiency carbon nanotube-stabilized cobalt oxides nanoparticles (CoO x /CNT), via immobilization of CoO x nanoparticles onto carbon nanotube (CNT), for 3-aminophenol (3-AP) degradation via peroxymonosulfate (PMS) activation. Among them, carbon nanotube is used as a nanoreactor for efficient degradation of 3-AP over CoO x /CNT nanocomposite . The detailed physical characterizations illustrate that CoO x /CNT presented a nanotube-shaped structure, and some CoO x nanoparticles were encapsulated into CNT, and the molar ration of Co and O in CoO x was calculated to be 1:1.006, where CoO 1.006 might be the mixture of CoO and Co 3 O 4 . The comparison with other carriers (including MoS 2 , CeO 2 , ZnO and ZrO 2 ), CoO x /CNT provides the highest 3-AP degradation efficiency, highlighting the key role of CNT, as a nanoreactor, in CoO x /CNT for activating PMS to degrade 3-AP. The super-high catalytic activity of CoO x /CNT nanocomposite in the 3-AP degradation is owing to the specific confinement (encapsulation of some CoO x by carbon nanotubes). It seems the electron transfer from CNT to Co atom surface, enriched its surface electron cloud density, which is favorable for PMS activation. Quenching experiments and electron paramagnetic resonance (EPR) result have verified that SO 4 • - and OH• are the primary reactive oxygen species in 3-AP degradation over CoO x /CNT/PMS system. This study provides a new research orientation for the synthesis of efficient and stable carbon nanotube-encapsulated Co-based nanocatalyst for wastewater treatment .
研究领域:
环境科学
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催化化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Jiarong Li,Shude Liu,Yuanzhao Xie,Fengluan Jiang,Xinyu Huang,Jianfeng Xia,Limin Wu,Yonghui Deng
Core–shell magnetic polymer microspheres with porous organic shells are highly desired for adsorption, separation, delivery/immobilization of guest objects in catalysis, and drug release. Herein, an amphiphilic block copolymer-directed interfacial assembly and polymerization strategy was reported to synthesize magnetic mesoporous 3-aminophenol–formaldehyde resin (MMAPF) microspheres. The uniform MMAPF microspheres exhibit well-defined core–shell structures, controllable porous shell thickness, high magnetization, and superparamagnetic properties. The abundant hydroxyl and amino groups in the porous shell offer the exceptional capability for stable immobilization of ultrafine Au nanoparticles, which can serve as a magnetically recoverable heterogeneous catalyst for catalyzing the hydrogenation of 4-nitrophenol with a fast reaction rate constant (0.59 min−1) and conversion rate (99%) at room temperature and good recycling stability.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Meng Ge,Yuanye Zhuang,Shiyang Bai,Jingjing Sun,Yingying Cheng,Xufeng Gong,Jihong Sun,Yanmin Yu
Metal-organic frameworks (MOFs) exhibit excellent structural properties, but their application in catalysis is limited due to their saturated coordination structures. Herein, catalysts containing unsaturated coordination MOF structural units loaded onto 3-aminophenol-formaldehyde resin (APF) were prepared using a stepwise assembly method. The amino groups in APF serve as anchoring groups, enabling the optimal dispersion of zinc on the surface of the carrier. The coordination saturation and the dominant surface groups can be controlled by the stepwise assembly. SEM, FT-IR, UV spectroscopy, XPS, zeta potential, and SAXS were employed to demonstrate the stepwise assembly process. The characterization results revealed that the binding strength between zinc and ligands on the APF spheres, as well as the coordination saturation state of zinc, progressively increased during the stepwise assembly process. Additionally, comprehensive evaluation of the catalytic performance was conducted via the cycloaddition reaction of CO₂ with epoxides to elucidate the feasibility and superiority of the synergistic catalysis between metal ions and functional ligands in the dual-active-center catalyst. The hybrid catalyst Zn-BDC/A-1 with the highest surface roughness but lowest Zn coordination exhibited the most efficient catalytic performance. Furthermore, the density functional theory (DFT) calculations substantiated that zinc centers on the APF surface exhibit a preferential coordination geometry involving no more than two ligand groups, and a ligand-dominated chemical environment. These findings demonstrate that the stepwise assembly maintains the coordinative unsaturation of metal centers and also optimizes the spatial availability of ligand functionalities.
研究领域:
材料科学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2021
·Vol. 13
·期 32
·13873-13881
·
IF 7.79
Neng Li,Bihui Qin,Hongfei Kang,Nana Cai,Suping Huang,Qi Xiao
Hollow carbon spheres (HCSs) have broad application in many fields such as catalysis, adsorption and energy storage. Due to various restrictions on hard and soft templates, self-templating methods have received extensive attention. Generally, the conventional self-templating method includes two steps, including the hollowing and carbonization process. Herein, a facile novel one-step air induced linker cleaving (AILC) method was developed to synthesize HCSs using 3-aminophenol formaldehyde (APF) resin spheres as the carbon precursor. In this case, the cavitation and carbonization processes occur simultaneously. The as-prepared HCSs were characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) and Raman spectroscopy. It was found that the cleavage of the ether bond groups (Ar–O–C) and the methylene (–CH2) in the APF resulted in cavitation and carbonization. The degree of cavitation and carbonization can be adjusted by controlling the thermal treatment temperature and time in air. Furthermore, the sulfur cathode containing HCSs heated at 400 °C exhibited excellent electrochemical performance with an initial discharge capacity of 1006 mA h g−1 at 0.2 C, and a low capacity decay rate of 0.097% per cycle over 500 cycles at 1 C. The novel one-step AILC strategy will pave a new avenue for the synthesis of hollow carbon spheres and their promising application in different areas.
研究领域:
材料科学
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能源存储
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催化化学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2014
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IF 3.552
Jing-Chuan Song,Zhong-Yuan Lu,Zhao-Yan Sun
3-Aminophenol/formaldehyde (AF) resin colloidal spheres with narrow size distribution and high nitrogen content are synthesized in the presence of urea. The obtained particles that indicated by transmission electron microscopy (TEM) and field emission scanning electron microscopy (FE-SEM) are spherical morphology and uniform. It can be further carbonized into carbon spheres preserving high nitrogen percent. The particle size is tunable from 300 nm to 850 nm by appropriately varying the concentration of precursor or water/ethanol volume ratio. Even using the water as an only solvent, we can also obtain spherical particles with different size. Typically, the nitrogen percent in the obtained polymer and carbon particles is as high as 10.39 wt% and 8.95 wt%, respectively. The typical surface area of resulted carbon particles obtained from nitrogen adsorption measurement is 459 m 2 g −1 . X-ray diffraction demonstrates the obtained carbon spheres are amorphous , which are expected to have practical application in the field of energy devices. The method can be considered as a low cost and facile method for mass production.
研究领域:
材料科学
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化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 138
·期 30
·50713
·
IF 3.125
Qian-Qian Gu,Cui-Liu Fu,Zhao-Yan Sun
To avoid the peeling-off of ceramic nanoparticles (NPs) from polyolefin membranes usually occurred in commercially available ceramic NPs coated polyolefin separators for lithium batteries, we propose a simple one-pot in-situ reaction method to modify commercial polyethylene (PE) separators by surface grafting 3-Aminophenol/formaldehyde (AF)/silica (SiO 2 ) composite NPs. The AF/SiO 2 composite NPs form self-supporting connected pores on the modified layer of the separator surface, which ensures the transportation of Li + . Moreover, the PE@AF/SiO 2 separators has higher electrolyte wettability and compatibility than neat PE separators attributed to the plentiful polar functional groups in the AF/SiO 2 layer and AF/SiO 2 composite NPs, resulting in higher lithium ion transference number ( = 0.62) and ionic conductivity (σ = 0.722 mS cm −1 ). More importantly, the discharge capacity, capacity retention rate and coulombic efficiency (136.2 mA h g −1 , 87.9% and 99%, respectively) after 200 cycles of Li|NMC half batteries with PE@AF/SiO 2 separators, are all more excellent than that with the pure PE separator (125 mA h g −1 , 83.1% and 85%, respectively). Our results show that the PE@AF/SiO 2 separators obtained by this modification method have higher electrochemical stability in the lithium battery system.
研究领域:
材料科学
·
电化学
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纳米技术
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电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）