JOURNAL OF CLUSTER SCIENCE
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2023
·Vol. 34
·期 6
·3095-3103
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IF 2.8
Liu Xiangyi,Zheng Qianye,Jia Deqi,Wang Wenwen,Zhao Hong,Tao Xiansen,Sha Jingquan
To explore novel nanozymes as colorimetric biosensors with highly activities, the ternary MIL-101(Fe)@P 2 W 18 @SWNT nanocomposite was successfully fabricated based on the optimal matching principle, namely, Wells–Dawson-type polyoxometalates (POMs, H 6 P 2 W 18 O 62 abbreviated as P 2 W 18 ) were encapsulated in a custom MIL-101(Fe) cavity, and single-walled carbon nanotubes (SWNT) was then fixed. The peroxidase-like activities of MIL-101(Fe)@P 2 W 18 @SWNT nanocomposite were evaluated by detecting hydrogen peroxide (H 2 O 2 ) and glucose (GLC). Compared with the MIL-101(Fe), P 2 W 18 and SWNT, the MIL-101(Fe)@P 2 W 18 @SWNT exhibits better peroxidase-like properties and stability due to the nature of all components and their optimal synergy. Based on the excellent catalytic activity of MIL-101(Fe)@P 2 W 18 @SWNT , two colorimetric biosensors for detecting H 2 O 2 and GLC with linear ranges of 0–80 μM (H 2 O 2 ) and 0–150 μM (GLC) were constructed, and the low detection limit of 0.3 μM for H 2 O 2 and 0.2 μM for GLC are superior to the most reported nanozymes. The work opens a promising route in constructing heterogeneous MOFs and POMs-based nanozymes for biosensing application.
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APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
·
2023
·Vol. 107
·期 13
·4301-4309
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IF 5
Wang Xueqin,Chen Xuyang,Liu Junyan,Tao Haizhen,Shao Ninghan,Li Wenlin,Huang Shiyu,Zhang Xiyan,Li Na
Abstract Total antioxidant capacity (TAC) is currently considered as a vital indicator of food quality in antioxidant ability and attracts much attention for human healthcare. It is thus of great significance to realize the accurate and rapid detection of TAC in foods. Herein, we have constructed a preferable hybrid nanozyme based on the mesoporous silica-stabilized CuO composited Fe 3 O 4 nanoparticles (Fe 3 O 4 @MSNs@CuO, FMC NPs), which possess the enhanced peroxidase (POD)-like activity via cascade response for specific and sensitive determination of TAC in fruit foods. The results showed the hybrid nanozyme displayed a remarkable POD-like activity, excellent selectivity and sensitivity, and the limit of detection (LOD) of the colorimetric sensor was 6.13 mM with the concentration range from 10 to 45 mM. Therefore, the fabricated hybrid nanozyme can be regarded as an effective biosensor for the evaluation of antioxidant quality in fruit foods in future. Key points
• The stabilized bimetallic nanozyme was constructed for TAC analysis in fruits.
• The hybrid nanozyme possessed the enhanced POD-like activity by cascading effects.
• The nanozyme was an effective biosensor for antioxidant quality evaluation in fruits.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
·
IF 6.2
Jun Liu,Hui Wang,Wen-Yao Zhu,Heng-Xue Xie,Xin Li,Wen-Juan Li,Ge Bai,Meng-Jie Chang,Xiao-Jiao Chai,Hui-Ling Du,Shi-Jie Song
We present a novel method to facilely prepare magnetically recoverable AgCl/Fe 3 O 4 @MIL-100(Fe) (ACFM) nanostructures for photocatalytic degradation of rhodamine B (RhB). The ACFM was directly prepared via a simple successive ionic layer adsorption and reaction (SILAR) deposition of MIL-100(Fe) on solvothermal synthesized Ag/Fe 3 O 4 nanoparticles , in which process Ag was completely oxidized into AgCl concurrent with the formation of MIL-100(Fe). The ACFM prepared with 15 SILAR cycles exhibits 92.9% efficiency towards photodegrading RhB within 30 min under visible light illumination, which is higher than that of the individual structure of AgCl/Fe 3 O 4 , Ag/Fe 3 O 4 @MIL-100(Fe) or Fe 3 O 4 @MIL-100(Fe). The remarkably enhanced photocatalytic performance is attributed to the abundant active sites and sufficient visible light response of MIL-100(Fe), as well as effective charge separation at the heterojunction interface between AgCl and MIL-100(Fe). Furthermore, the obtained ACFM can be quickly separated from the pollutant solution with a magnet and possesses good stability for recycling photocatalysis . In light of the study, the ACFM nanostructures are believed to be applied as promising photocatalysts for practical applications.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
·
IF 5.2
Xiaorui Yang,Jihui Wang,Zexing Ren,Wenbin Hu
The nickel-ferric layered double hydroxides (NiFe-LDHs) film which are commonly used as catalysts was fabricated on Q235 steel in-situ via two-step hydrothermal method . And the superhydrophobic NiFe-LDH-PFDTES film was obtained by 1 H, 1 H, 2 H, 2 H-perfluorodecyltriethoxysilane (PFDTES) modification. To a certain extent, the application of NiFe-LDHs has been broadened. The structure and composition of NiFe-LDHs film and NiFe-LDH-PFDTES film were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive spectrometer (EDS), and Fourier transform infrared (FT-IR). The wettability of films was analyzed by water contact angle testing. And the corrosion resistance of NiFe-LDHs and NiFe-LDH-PFDTES film in 3.5 wt% NaCl solution were measured by using potentiodynamic polarization curve and electrochemical impedance spectroscopy (EIS) techniques. The results show that NiFe-LDHs and NiFe-LDH-PFDTES film were successfully prepared on the surface of Q235 steel. By adjusting the preparation conditions, the NiFe-LDH-PFDTES film with optimal corrosion resistance was prepared in the condition containing the hydrothermal solution concentration is 1 unit and hydrothermal time for 6 h. The hydrophobicity changes little with the hydrothermal parameters, and all reach the state of superhydrophobic, the contact angle is greater than 150°, the sliding angle is less than 1°. For the superhydrophobic film, NiFe-LDHs has excellent synergy with PFDTES, covering of an "air film" on the rough structure of LDHs, blocking the solution from contact with the substrate, thereby providing corrosion resistance. NiFe-LDH-PFDTES film exhibits much better corrosion protective performance than NiFe-LDHs film in 3.5 wt% NaCl solution, the impedance modulus is increased about 4–5 orders of magnitude compared with Q235 steel, and the highest protection efficiency can reach 99.99%.
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高影响因子
SOLID STATE SCIENCES
·
2023
·
IF 3.5
Guo-li Chen,Huai-yao Wang,Yong-zhi Liu,Xiao-ming Huang,Guang-ming Yin
In this paper, nanowool ball Ni 3 Se 2 , rod NiSe and multistage Ni 3 Se 2 were prepared. Multilevel Ni 3 Se 2 was doped with Fe, Co and Mo respectively to prepare composite catalysts. The prepared materials were characterized by UV, XRD, SEM-EDS and XPS . The results show that the composite catalysts with multi-level Ni 3 Se 2 and Mo have special morphology and high purity. The HER performance of the composites was tested using an electrochemical workstation, and the results show that at a current density of 10 mA cm −2 , the overpotentials of Ni 3 Se 2 , Ni 3 Se 2 /Fe, Ni 3 Se 2 /Co and Ni 3 Se 2 /Mo are 71, 71, 3 and 37 mV, respectively; At a current density of 100 mA cm −2 , their overpotentials are 396.9, 373.6, 321.8 and 290.1 mV, respectively. Their Tafel slopes are 227, 169, 145 and 137 mV dec −1 , respectively. The R ct s of Ni 3 Se 2 , Ni 3 Se 2 /Fe, Ni 3 Se 2 /Co and Ni 3 Se 2 /Mo are 1.63, 1.47, 1.15 and 0.90Ω, respectively. After the comparison of the electrochemical HER performance, it is found that the Ni 3 Se 2 /Mo composite catalyst has good HER performance.
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高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Weiting Yu,Leben Qiu,Jieyun Zhu,Sizhuo Chen,Shuang Song
The selective catalytic reduction of nitroaromatics towards aromatic amines under mild reaction condition is an important approach to reduce the toxicity of waste effluents from industry and afterwards utilize the product as important fine organic chemical raw materials. P-nitrophenol (PNP) is chosen as the probe molecule of nitroaromatics in this study. A Fe-embedded N-doped Carbon (Fe-N-C) catalyst prepared using ZIF-8 has been identified as a highly active, selective and stable catalyst in the selective catalytic reduction of PNP. The Fe-N-C catalyst is for the first time applied in PNP reduction and found to present 100% conversion and 100% product selectivity . A mechanism investigation has been carried out to conclude that in the PNP reduction on Fe-N-C, water acts as the main hydrogen provider and sodium borohydride is the electron donator. Furthermore, the Fe-N-C catalyst works well when it is applied in PNP degradation in real water samples, which further indicates its applicability in industrial wastewater treatment . This work offers a simple and useful strategy to design robust catalysts for the selective catalytic reduction of nitroaromatics.
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高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Sheng-Jiang Huang,Le-Zhong Li,Xiao-Hui Wu,Jian Tang,Rui Wang,Zhe Xiong,Xin Chang
Considering how quickly wireless communication has developed, the need for the miniaturization, integration and high frequency of electronic components is more intense. The improvement of material properties is the key to solving the difficulties in the development of electronic devices. Solid-phase reactions were used to create Ni 0.5 Zn 0.4 Co 0.1 Dy x Fe 2- x O 4 (NZCDF, 0 ≤ x ≤ 0.1) ferrite ceramics. The produced NZCDF ceramic samples are discovered to still have a spinel structure. The lattice constant a and bulk density d Bulk increase when dysprosium ion is added. The saturation magnetization decreased from 82 to 71 emu/g, and the Hc increased from 18 to 23 Oe. Dysprosium can be added to ceramic samples to modify their level of polarization, lower their ε ′, and minimize their dielectric loss. The DC resistance ρ increases to 6.3 × 10 3 Ω⋅m. In the higher frequency range, with the increase of dysprosium ion content, the magnetic quality factor Q increases significantly, its peak value expands, and its corresponding frequency shifts to a higher frequency. In the high-frequency region, the magnetic quality factor Q rises dramatically, its peak value expands, and its corresponding frequency shifts to a higher frequency. The peak Q of the Ni 0.5 Zn 0.4 Co 0.1 Dy 0.1 Fe 1.9 O 4 sample increased to 14.71, and the frequency corresponding to the peak Q increased to 35.08 MHz. In short, substituting dysprosium ions for nickel-zinc-cobalt ferrite broadens the application range of ferrite ceramics in high-frequency devices. The spectrum of applications for ferrite ceramics in high-frequency devices is expanded by substituting rare earth dysprosium ions for NiZnCo ferrite ceramics.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Qiwen Pan,Fei Lin,Ruiqi Liu,Yilin Li,Xinyue Zhang,Rui Luo,Lingling Cai,Yang Liu,Wuguo Deng,Liru He
Nanocatalysts provide a platform for developing anti-tumor strategies by activating intratumoral chemical catalysis to produce highly toxic reactive oxygen species (ROS). However, the biological effect of nanocatalysts on tumor cells, which is pivotal for effective nanotherapy treatment, remains poorly understood. Herein, we present a general and facile method of synthesizing Fe/Ni-layered double hydroxides (LDHs) for enhanced apoptosis- and ferroptosis-induced cancer nano-therapy, as well as a potential mechanism underlying the anti-tumor effect based on transcriptome sequencing. An analysis of the chemical structure suggests that the Fe atoms interact strongly with the Ni atoms in Fe/Ni-LDH. Compared with Fe-OH and Ni-OH, Fe/Ni-LDH exhibited significantly better ROS-catalytic activity, with a V max of 5.015 × 10 −2 μM·s −1 , and generated massive amounts of •OH and O 2 •− radicals, enabling outstanding chemo-dynamic therapy. Both in vitro and in vivo experiments indicated a robust apoptosis-induced cell death pathway, increased intracellular oxidative stress, and accumulation of lipid peroxide (LPO), promoting ferroptosis-involved cancer-cell death, which was further confirmed by transcriptome sequencing. The Fe/Ni-LDH biocatalyst not only provides a robust nanoplatform for tumor suppression but also encourages further exploration and applications of nanobiocatalysts.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2023
·
IF 4.5
Jilin Yan,Xi Wen,Lixiu Yin,Yueju Wang,Huiling Li,Yifeng Tu
The aggregation of amyloid-β protein (Aβ) into amyloid-β oligomer (AβO) and finally the deposition of amyloid-β fiber (AβF) in brain was found strongly related to Alzheimer's disease (AD). In this work, an electrochemiluminescent (ECL) aptasensor reinforced with a gold nanoparticle – iron metal orgaic framwork nano-composite (AuNPs/Fe-MOFs) was constructed for the detection of Aβ. It has the ability to specifically quantify Aβ, the precursor that had not yet been aggregated into AβO. The employed AuNPs/Fe-MOFs nano-composite in this sensor not only provided the opportunity to anchor the aptamer, but also enhanced the response to promote its sensitivity. The relative inhibition ratio of luminol ECL on this sensor was linearly related to the logarithm of Aβ concentration in the range from 0.5 to 50 pM, with a LOD at 104 fM. The aptasensor has high specificity to Aβ over its analogs and recoveries in human serum were obtained within 96.0–103.7%. The research prospectively provides a new demonstration for early diagnosis of the disease in clinic.
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高影响因子
RENEWABLE ENERGY
·
2023
·
IF 8.7
Yixuan Yu,Huai Liu,Junhua Zhang,Heng Zhang,Yong Sun,Lincai Peng
Designing highly efficient non-noble metal catalyst for the selective hydrogenolysis of biomass derivatives to fuels and fine chemicals is a key pursuit for sustainable chemical industry but substantially challenging. In this contribution, we report, for the first time, the construction of amorphous bimetal Ni–Fe borides for efficient catalytic hydrogenolysis of biomass-derived 5-hydroxymethylfurfural (HMF) into 2,5-dimethylfuran (DMF) as a promising biofuel candidate. The as-prepared Ni 1.52 Fe 0.36 BO x catalyst afforded a near-quantitative DMF yield using ethanol as a green solvent under relatively mild operating conditions (1 MPa H 2 , 160 °C and 1 h), leading to an excellent DMF formation rate of 16.5 mmol DMF ·g cat −1 ·h −1 , which is 1.7–16.5 folds higher than the state-of-art nickel-based catalysts. Mechanistic investigations demonstrated that the Fe intervention is conductive to the generation of electron-enriched metal sites and powerful acidic sites in Ni 1.52 Fe 0.36 BO x catalyst, which favored the activation of hydrogen and the cleavage of C–O bond to accelerate the hydrogenolysis process. Moreover, Ni 1.52 Fe 0.36 BO x catalyst exhibited good recyclability as well as universality in the hydrogenolysis of various biomass-derived unsaturated aldehydes. This finding opens a new avenue for highly selective hydrodeoxygenation of renewable biomass feedstock to value-added chemicals with non-noble bimetal hybrids in a green and straightforward manner.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 16
·7910-7921
·
IF 3.3
Ruiyao Huang,Qi Zhu,Weixin Wang,Yuhan Hu
With the increased use of antibiotic medications, more and more ciprofloxacin (CIP) is contaminated into the environment, which could endanger both humans and ecosystems. In this work, chitosan modified Fe pretreated biochar (CS-FBC), which was produced utilizing a straightforward and reduced synthesis process, was tested for its effectiveness in the removal of CIP from an aqueous solution. CS-FBC was analyzed using XPS, XRD, BET, SEM, FTIR, and a zetasizer. In addition, we investigated how ciprofloxacin removal was influenced by a number of variables, including initial concentration, time, pH, and temperature. The findings of the experiment showed that the adsorption impact was very rapid and could reach 80% over the first 60 minutes of the overall adsorbent. The kinetic model of CS-FBC adsorbed CIP in solution was discovered to be comparable to the pseudo-second-order kinetic model, suggesting that it may be connected to chemical adsorption. By matching the adsorption properties, a maximum peak value of 76.72 mg g−1 at 35 °C was found, and the fitting was found to match better with the Langmuir isotherm model. Investigations into the adsorption thermodynamics revealed that the process was temperature dependent and instantaneous. By raising the amount of NaCl, the adsorptive power might be reduced to an extent. However, the adsorption action was seldom affected by amounts of less than 0.01 M NaCl. Furthermore, in addition to hydrogen bonding and hydrophobic interaction, the adsorption process for CS-FBC on CIP also involves electrostatic interaction and π–π electron-donor–acceptor (EDA) interaction. The adsorption rate could still be maintained at 61.25% after 7 experiments. The removal effect of CS-FBC on CIP can prove that CS-FBC is a green, economical, and sustainable adsorbent with a low preparation cost.
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高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2023
·
IF 3.9
Yingzi Lin,Qingyu zhang,Yi Lou,Gen Liu,Siwen Li,Lei Chen,Baoling Yuan,Deqiang Zou,Junjie Chen
In this study, the degradation of nizatidine (NZTD) was investigated using a zero-valent iron-promoted divalent iron-activated persulfate process. Results show that complete NZTD degradation at 5 mg/L could be achieved under the optimal conditions of NZTD/zero-valent iron (ZVI)/Fe(II)/persulfate (PS) = 1:6:3:6 (molar ratio), pH = 7.0, and 25 °C. A highly alkaline environment would decrease the NZTD removal, and the NZTD degradation increased with the reaction temperature (5–35 °C). Furthermore, acidic conditions and the presence of Cl - enhanced the degradation of NZTD, but the presence of high doses of HCO 3 - , NO 3 - , and humic acid inhibited the degradation of NZTD. The fragile sites in NZTD were predicted by density functional theory (DFT) methods, and six transformation products were detected during the degradation of NZTD by PS/Fe(II)/ZVI. The toxicity of the intermediates was examined using the TEST toxicity prediction model and luminescent bacteria. The degradation process generated intermediates with higher toxicity than NZTD. However, after 60 min of reaction, the inhibition rate of luminescent bacteria decreased rapidly, and low toxicity products were generated. These results suggest that ZVI/Fe(II)/PS is promising as a new alternative process for the treatment of water containing NZTD.
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高影响因子
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