TALANTA
·
2024
·
IF 5.6
Chen Cui,Yunfeng Fan,Yaxuan Chen,Renlong Wei,Jie Lv,Meng Yan,Dechen Jiang,Zhimin Liu
Cyanidin-3- O -glucoside (C3G), a natural antioxidant, plays multiple physiological or pathological roles in maintaining human health; thereby, designing advanced sensors to achieve specific recognition and high-sensitivity detection of C3G is significant. Herein, an imprinted-type electrochemiluminescence (ECL) sensing platform was developed using core-shell Ru@SiO 2 -CMIPs, which were prepared by covalent organic framework (COF)-based molecularly imprinted polymers (CMIPs) embedded in luminescent Ru@SiO 2 cores. The C3G-imprinted COF shell not only helps generate a steady-enhanced ECL signal, but also enables specific recognition of C3G. When C3G is bound to Ru@SiO 2 -CMIPs with abundant imprinted cavities, resonance energy transfer (RET) behavior is triggered, resulting in a quenched ECL response. The constructed Ru@SiO 2 -CMIPs nanoprobes exhibit ultra-high sensitivity, absolute specificity, and an ultra-low detection limit (0.15 pg mL −1 ) for analyzing C3G in food matrices. This study provides a means to construct an efficient and reliable molecular imprinting-based ECL sensor for food analysis.
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TALANTA
·
2024
·
IF 5.6
Jianwen Fei,Wei Yang,Yin Dai,Wei Xu,Huizhu Fan,Yani Zheng,Junli Hong,Jun Zhang,Wanying Zhu,Xuemin Zhou
The enzyme-like properties of nanozymes may be considerably affected by the structure and surface groups, which thus need to be optimized. Here, through a simple NaOH chemical corrosion method, the chemical structure similar to N-Methylpyrrolidone (NMP), which possessed intrinsic oxidase-like activity, was introduced into polypyrrole (PPy), and then this nanomaterial became oxygen-functionalized PPy ( o -PPy) with excellent oxidase-like activity from PPy without this property. Furthermore, after compounding magnetic Fe 3 O 4 , the obtained nanocomposites Fe 3 O 4 @o-PPy nanoparticles (Fe 3 O 4 @o-PPy NPs) showed superiorities in separation during synthesis and real-time control of enzyme catalysis . Studies have found that the enzymatic activity of Fe 3 O 4 @o-PPy NPs depended on the amount of functionalized oxygen and the conjugation extent of o -PPy. Fe 3 O 4 @o-PPy NPs had efficient oxidase-like activity under a wide range of pH and temperature. Based on the oxidase-like activity of Fe 3 O 4 @o-PPy NPs, a colorimetric sensor for glutathione (GSH), which presented rich color changes and satisfactory colorimetric resolution by adding the amaranth , was realized. We believe that the functional modification and structural regulation of PPy can not only realize its wider application but also promote the discovery of novel and efficient nanozymes .
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ACS Nano
·
2025
·
IF 16
Haijuan Zhang,Hengyue Xu,Jie Chen,Daqin Guan,Zhiwei Hu,Xiaomin Xu,Zezhou Lin,Hainan Sun,Xiao Sun,Jiayi Tang,Chih-Wen Pao,Chien-Te Chen,Wei Zhou,Chunchang Wang,Youmin Guo,Zongping Shao
Lattice oxygen participation mechanism (LOM) can break the conventional adsorption scaling limitations to boost electrocatalysis performance and has been utilized to design promising single-phase oxides that generally show favorable bulk oxygen-ion diffusion capability. In pure-phase materials, bulk oxygen vacancies could act as oxygen-ion diffusion channels, implying rich bulk oxygen vacancies at the interfaces of hybrid-phase composites may further boost LOM. Here, by designing hybrid Co2.5Ru0.5Ox hollow nanotubes with rich two-phase interfaces, we report a phenomenon of interfacial LOM. Such hollow nanotubes (∼10 nm wall thickness), composed of spinel Co3O4-x-rutile RuO2-x interfaces, exhibiting a low overpotential of 430 mV and a long-term stability of 1000 h at 500 mA cm–2 for oxygen-evolving reaction (OER) in near-industrial alkaline solutions (6 M KOH). The constructed anion exchange membrane electrolyzer requires only 1.82 V to achieve a 1 A cm–2. Interfacial Co/Ru atomic interactions trigger Co–O–Ru motifs to undergo self-optimization during OER through oxidizing Co/Ru ions and narrowing bond length to create short synergetic active sites, while interfacial oxygen vacancies act as ion-diffusion pathways. Combined mechanism experiments and computations unravel the exceptional interfacial LOM processes. Additionally, the hollow nanotube structure promotes OH– adsorption, serving as a beneficial driving force for interfacial LOM.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Amin Chen,Na Li,Chenxu Sun,Yanmin Qin,Luyao Qi,Huipei Zhang,Haifeng Bao
Both inorganic solid electrolytes and organic polymer solid electrolytes face limitations in practical applications due to their shortcomings. Inorganic solid electrolytes suffer from high interface impedance and poor mechanical properties, while polymer solid electrolytes struggle with low Li-ion conductivity, thermal stability and electrochemical stability. To overcome the drawbacks of single phase solid electrolytes while utilizing their respective advantages, composite solid electrolytes have emerged as a popular research direction in recent years. Typical composite solid electrolytes feature inorganic filler particles dispersed in a polymer matrix. In this work, we introduce a novel non-flammable composite solid electrolyte with inorganic matrix and inorganic fillers. The composite solid electrolyte was prepared by integrating a 3D Si-Zr-O-C inorganic fiber film with Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) particles that have high ionic conductivity via a vacuum impregnation process, which is all-inorganic solid state electrolyte. This unique design of established network structure provides fast Li-ion transport channels, enabling high ionic conductivity (2.3 × 10 −4 S cm −1 at room temperature). Furthermore, the Si-Zr-O-C/LLZTO (SLTO) composite electrolyte also exhibits superior flexibility, thermal stability, and electrochemical stability. The SLTO composite solid electrolyte presents a promising electrolyte candidate for next generation lithium ion batteries.
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JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Wen-Jie Gao,Ming-Yue Tian,Xing-Hui Ren,Hao-Rui Zhang,Xi-Wen He,Wen-You Li,Yu-Kui Zhang
Nitrite (NO 2 − ) is widely present in the natural environment and human daily life. Excessive NO 2 − can cause harm to the environment and human health. Herein, silicon nanoparticles (SiNPs) with a fluorescence quantum yield of up to 70 % were synthesised using a one-pot hydrothermal method and combined with the common and inexpensive o -phenylenediamine (OPD) to achieve the detection of NO 2 − . Upon the addition of NO 2 − , the blue fluorescence of the SiNPs was quenched due to static quenching and Förster resonance energy transfer (FRET), while the yellow fluorescence of benzotriazole, the reaction product of OPD and NO 2 − , was enhanced, resulting in the fluorescence color change from blue to yellow. Based on these phenomena, a ratiometric fluorescence sensor integrated with smartphone imaging technology was developed. This sensor is notable for its portability, cost-effectiveness, and satisfactory detection limits (0.016 μM for ratiometric fluorescence and 1.64 μM for smartphone imaging). Importantly, it demonstrates high reliability and practicability in detecting NO 2 − in real water and food samples. This broadens the application of SiNPs in the sensing field and introduces new possibilities for NO 2 − detection in complex sample matrices.
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Nano Today
·
2024
·
IF 13.2
Xue Wang,Lili Xia,Hui Cheng,Kexing Li,Wei Feng,Xinyue Dai,Yu Chen
Reactive oxygen species (ROS) can induce oxidative damage to biomolecules within tumor cells, making them suitable for tumor therapy. However, the effectiveness of these ROS in treating tumor cells is restricted due to their short half-life or short diffusion distance. Sulfate radicals (SO 4 • – ), with a longer half-life and higher oxidation potential , provide a compelling alternative. Herein, we propose an efficient strategy to activate peroxymonosulfate (PMS) and produce SO 4 • – and •OH by using ultrasound-mediated Cu 2+ /Cu + redox cycling, enabling oxygen-independent synergistic tumor therapy. Notably, this redox cycle ensures the continuity of effective Cu + catalytic sites and prevents adverse effects on healthy tissues. The density functional theory results demonstrate that the decisive copper valence-conversion step is derived from the ultrasound-induced excitations of electrons in spin-down bands of Cu 2 (OH)PO 4 . This ultrasound-controlled transition metal valence alteration enables in-situ activation of a nontoxic drug to produce toxic reactive X (X = O/S) species in an O 2 -independent manner, offering an efficient, adaptable and universal methodology for treating hypoxic tumors in living systems.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Huimin Li,Zhe Sun,Chenlong Dong,Xueli Zhang,Chengkun Lei,Baobao Jin,Qianqian Shen,Husheng Jia,Jinbo Xue
Photocatalytic non-oxidative coupling of methane is an attractive strategy for CH 4 to C 2 conversion, how to facilitate the photogenerated charge separation and accelerate the C–C coupling to promote the reaction kinetics remains a great challenge. Herein, a symbiotic r-Fe 2 O 3 /NiO heterostructure with robust interfaces is constructed in situ. The coherent interface not only provides unique Ni–O–Fe asymmetric sites, but also achieves the separation and transport of photogenerated charge. The unbalanced charge density distribution of two adjacent methyl or methylene at the Ni–O–Fe asymmetric site alleviates the dipole repulsion of the C–C coupling, and promotes C–C coupling to form C 2 hydrocarbons. Under visible light irradiation, the optimal r-Fe 2 O 3 /NiO performs a brilliant C 2 activity up to 71.00 μmol g −1 h −1 , and the C 2 H 4 yield can reach a high value of 40.46 μmol g −1 h −1 and the selectivity of 56.98 %. This work provides new insights into the coupling of C–C to generate C 2 hydrocarbons.
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POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 1
·e6269
·
IF 3.1
Mirza Nadeem Ahmad,Muhammad Naveed Anjum,Muhammad Fayyaz Farid,Atta-ul Haq,Akbar Ali,Muhammad Fayyazur Rehman,Mohammed A. Assiri,Muhammad Safwan Akram
Water pollution is growing at an alarming rate, particularly due to the colored wastewater released by the various industries into aquifers and fresh water sources, and in some extreme cases, they have reached the water table. Faisalabad, a city in Pakistan where there is an industrial cluster of textiles dyeing and manufacturers, water table has become undrinkable. The presence of hazardous dyes and chemicals imposes serious health issues on humans, animals, and plants. The treatment of such toxic dye effluents is crucial and could be done by efficient degradation methods such as photocatalysis. The current study presents synthesis of poly( o -methylaniline)/zinc oxide/reduced graphene oxide nanocomposite (POMA/ZnO/rGO NC) using a chemical oxidative polymerization process and explores its properties as a photocatalyst by demonstrating degradation of three dyes. The composite was characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), photoluminescence emission spectroscopy (PL), Brunauer Emmett–Teller analysis (BET), and UV–visible spectroscopy (UV–visible). Further, the photocatalytic activity of POMA/ZnO/rGO NC was evaluated and compared by degrading the direct yellow 12 (DY 12), congo red (CR), and malachite green (MG) dyes in aqueous media under UV irradiation. The results indicated that after 110 min, POMA/ZnO/rGO composite degraded the dyes by 92% (DY 12), 86.1% (CR), and 82.1% (MG), respectively. Moreover, kinetic studies of the photocatalyst were also performed along with reusability test, total organic carbon, chemical oxygen demand, and degradation mechanism.
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THERMOCHIMICA ACTA
·
2024
·
IF 3.1
Huanxin Li,Bo Zhu,Kenan Sun,Xin Ding
The solubility of 3, 4- O -isopropylidene clindamycin (OIC) was determined in twelve solvents at p = 101.3 kPa with the temperature from 273.15 K to 313.15 K. The solubility of OIC increases with the raise temperature. Among the selected solvents, 2-butanol showed the best dissolving ability for OIC, while acetonitrile showed the worst dissolving ability. The obtained data are neatly correlated with five models, including van't Hoff, Yaws, λh , Wilson, and nonrandom two-liquid interaction model (NRTL), with Yaws equation yielding the most accurate predicted results. Moreover, the Conductor-like Screening Model for Real solvents (COSMO-RS) provides better calculated results for the protic solvents than the aprotic ones except for acetonitrile . The dissolving mechanism of OIC was investigated with intermolecular interaction between OIC and solvents, and the analyses indicate that the dissolving process is affected by intermolecular interaction, molecular shape, and size of both solvents and the solute. The apparent thermodynamics analysis shows that the dissolving process of OIC before reaching equilibrium in the twelve solvents is spontaneous, endothermic, and enthalpy driven.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Fanyong Yan,Yao Zhang,Yating Li,Juanru Huang,Yidi Wang
Metal-organic skeletons (MOFs) with low conductivity and insufficient response to visible light have limited their development in the field of photocatalysis. The adjustable pore structure, large surface area, and ease of surface modification of MOFs provide opportunities to further improve the photocatalytic performance. This study reports the synthesis of flower-like zinc-based MOFs with hierarchical structure using two ligands as organic linkers. The heterojunction constructed by doping graphitic carbon nitride (g-C 3 N 4 ) catalysts effectively tuned the energy band structure of the MOFs to adapt to specific photo responses. Especially, the introduction of the heteroatom O into g-C 3 N 4 (OCN) again adjusts its electronic structure and thus improves its visible light utilization. The further incorporation of carbon nitride quantum dots (CNQDs) improves the charge separation efficiency and facilitates the division of photogenerated electron-hole pairs. The catalyst exhibited excellent visible light trapping and electron transfer properties with 90.46 % tetracycline (TC) degradation within 60 min. The free radical burst experiments and results indicate that the key active substances in the catalytic process are ·O 2 - with h + . This study introduces a novel approach to developing MOF-derived materials with environmental functionality.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Keru Song,Anze Shui,Mingyuan Hu,Hulei Yu
Transition metal dichalcogenides (TMDs) with regulated band structures and multilayered structures have attracted considerable interest in microwave absorption materials. However, the rational design of the hierarchical structure with phase and defect from a microscopic perspective remains challenging. Here, the O-doped 1 T/2H MoS 2 heterojunction is successfully fabricated with a hierarchical morphologically controllable 3D flowerlike structure using the cetyltrimethylammonium bromide template method. It is found that the heterogeneous interface between 1 T and 2 H MoS 2 phases can increase interfacial polarization, and the defects with O dopants and vacancies are beneficial to improve dipole polarization and conductive loss. Such a synergism results in a significantly enhanced electromagnetic wave absorption (EMWA) in these O-doped 1 T/2H MoS 2 samples, achieving the minimum reflection loss (RL min ) of −55.28 dB at a matching thickness of 2.53 mm and an effective absorption bandwidth of 5.05 GHz at 1.88 mm in the as-fabricated MS0.3C-40 samples. Meanwhile, the RL min of the as-fabricated MS0.3C-50 samples reaches −55.24 dB at a matching thickness of 2.29 mm with a maximum radar cross-section of 38.72 dB∙m 2 . These findings pave the way for optimizing the EMWA performance of TMDs with the synergism of phase engineering and defect engineering.
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Journal of Cleaner Production
·
2024
·
IF 9.7
Mengqi Han,Qinfei Chen,Weikang Tang,Hong Zhou,Jiadong Chen,Wenbin Liu
Surfactants occupy a prominent place in the domestic and industrial fields. Amino acid surfactants have attracted attention as alternatives to petrochemical-based surfactants owing to their good biocompatibility and biodegradability. Conventional amino acid surfactants with structures having only acyl linkages lack multifunctionality. Therefore, novel amino acid surfactants must be developed to achieve this feature. Inspired by melanogenesis , the biomimetic synthesis of melanin-like amino acid surfactants with structures similar to that of melanin was conceived. Natural polyphenols with catechol moieties serve as building blocks for hydrophobic moieties. As a proof-of-concept, caffeic acid phenethyl ester was oxidized to o- quinone using periodate resin. Melanin-like amino acid surfactants were synthesized by conjugating amino acids to o -quinones via Michael addition and Schiff base reactions. The structure was confirmed by mass spectrometry . Melanin-like amino acid surfactants have outstanding surface activity with a low critical micelle concentration and excellent capacity for foaming, emulsifying, dispersing, wetting, and solubilizing. Melanin-like amino acid surfactants exhibit low skin irritation , as well as high tolerance to ions and pH. The utilization of polyphenols introduces multifunctionality, affording antioxidant, antibacterial and whitening activities. This study proposes a modular strategy for fabricating new and multifunctional amino acid surfactants that mimic melanin by simply replacing the o -quinone building block. This biomimetic synthesis route is a sustainable process for the green production of amino acid surfactants. This new generation of amino acid surfactants will contribute to meeting the increasing demand for multifunctional surfactants in both academia and industry.
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