APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Caiyu Ge,Yuefan Wang,Yilin Wang,Zhifang Liu,Chao Chen,Yixi Xie,Pengcheng Zhao,Junjie Fei
As a natural flavonoid compound found in fruits, vegetables and herbs, luteolin (LU) has potent pharmacological activities and beneficial biological properties. Here, a Fe/Zn bimetallic ZIF pyrolysis-derived Fe-Fe 3 O 4 N-doped mesoporous carbon was in-situ grown on carbon nanofibers (Fe-Fe 3 O 4 -NPC@CNFs), and it was used as an ultrasensitive electrochemical sensing platform for the efficient detection of LU in natural samples. Multiple characterization results show that Fe-Fe 3 O 4 -NPC@CNFs is a dodecahedral particle uniformly grown on CNFs with good crystal structure and uniform elemental distribution. Its rough surface with good mesoporous structure and high specific surface area of 823.19 m 2 /g is beneficial for LU adsorption. The density of states (DOS) and adsorption energies of NPC and Fe-Fe 3 O 4 -NPC further demonstrate that Fe-Fe 3 O 4 -NPC has better electrochemical performance and adsorption effect on LU. Under optimized conditions (carbonization: 800℃, pH: 5.0, enrichment: −0.2 V for 400 s), the Fe-Fe 3 O 4 -NPC@CNFs/GCE sensor showed satisfactory detection performance for LU in the range of 0.001–1.5 μM with the limit of detection (LOD) of 0.47 nM. Furthermore, this sensor exhibits excellent anti-interference capability, reproducibility, and stability, and it was also possible to effectively detect LU in food samples. This work provides a new strategy for the quantitative analysis of LU in food.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Energy
·
2025
·
IF 8.6
Tao Zhang,Ling Meng,Junli Ren,Ning Wang,Lei Du,Xiting Zhang,Lixin Xing,Chunmei Tang,Siyu Ye
As a representative multi-layer energy storage device, zinc-air batteries (ZABs) are inevitably limited by the contact problem between electrode interfaces. Therefore, developing electrode structures with enhanced electron and mass transfer capabilities is crucial for advancing this technology. In this work, Poly(p-phenylene benzobisoxazole)(PBO) carbon paper with in-situ growth Pt catalyst has been prepared and as self-supporting cathode catalyst layer, expanding the traditional three-phase reaction interface to the entire 3D interconnected structure of the air electrode, effectively integrating the catalytic layer with the gas diffusion layer. The modified PBO CO 2 @A-N surface, adorned with uniformly distributed platinum nanoparticles. This modification resulted in exceptional oxygen reduction reaction (ORR) performance, characterized by a substantial electrochemical surface area (200.2 m 2 g Pt −1 ) and an half-wave potential of 0.891 V. In addition, the primary PBO CO 2 @A-N-ZAB demonstrated remarkable peak power densities of 128.1 mW cm −2 in aqueous and 59.1 mW cm −2 in flexible primary zinc-air batteries, underscoring its potential for high-performance energy storage applications.
✓ 已验证
产品关联
DOI
高影响因子
ACS Catalysis
·
2024
·
IF 11.3
Xiaoli Sun,Jie Liu,Yunmei Du,Yanru Liu,Wenna Wang,Dehong Chen,Ruiyong Zhang,Lei Wang
Constructing multifunctional electrodes with high metal utilization by a one-step synthesis strategy is a serious challenge. Herein, Zn-IrP2/FeP with dual-functional activity induced by trimetallic sites are constructed by the “one-step phosphorization”. Relevant characterizations and DFT calculations reveal that Ir and Fe act as the HER and HzOR sites, respectively, promoting the overall hydrazine splitting (OHzS) at the industrial-level current. Specially the Zn dopant, as an auxiliary active site for Ir–Fe dual-active sites, optimizes the physical structure, electronic configuration, d-band center, and adsorption intermediate capabilities of the Zn-IrP2/FeP/IF electrode from multiple perspectives. As expected, Zn-IrP2/FeP/IF only requires 223.0 and 382.0 mV to drive the industrial-grade current density of 1 A cm–2 for HER and HzOR, respectively. Notably, the voltage of the OHzS for Zn-IrP2/FeP/IF to reach 500 mA cm–2 is 1.38 V lower than that of the OWS. In summary, trimetallic sites exhibit synergetic electrocatalytic functions and synergistically maximize electrocatalytic efficiency. Moreover, the multiactive site mechanism of the dopant as an auxiliary active site is innovatively proposed in this work. This presents a valuable idea for designing multimetal catalysts with high metal utilization efficiency and in-depth investigation of catalytic mechanisms.
✓ 已验证
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2017
·Vol. 410
·期 2
·349-359
·
IF 3.431
Sun Ya Kun,Jia Man,Yang Jian,Huang Yan-Ping,Liu Zhao-Sheng,Aisa Haji Akber
A method of preparing molecularly imprinted polymers (MIPs) with Zn(II) as a metallic pivot was adopted to solve the problem of imprinting compound with intramolecular hydrogen bonds by forming stronger coordination binding interaction among the template–functional monomer-Zn 2+ complex. A ternary porogenic system including dimethyl sulfoxide, dimethylformamide, and room temperature ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate was employed to fabricate imprinted monolith with high porosity and good flow-through properties, in which chicoric acid (CA), zinc acetate, 4-vinylpyridine (4-VP), and ethylene glycol dimethacrylate (EDMA) was the template, metallic ion, functional monomer, as well as crosslinker, respectively. The influence of polymerization factors including the 4-VP-CA ratio, monomer-crosslinker ratio, template-Zn 2+ ratio on imprinting factors was systematically investigated. When the ratio of 4-VP to CA was 24:1, the greatest IF value (24.81) was achieved on the CA-MIP prepared with zinc acetate. In addition, off-line SPE with the optimal MIPs monolith led to high purity of CA (98.0% ± 0.5%) from extraction of Cichorium intybus L. roots with the recovery of 77.5% ± 2.5% ( n = 6). As a conclusion, the strategy of introducing metal ions as metal pivot to prepare MIPs was a powerful method for the MIPs synthesis to the template molecules with intramolecular hydrogen bonds.
✓ 已验证
DOI
高影响因子
Small
·
2022
·Vol. 18
·期 34
·2203964
·
IF 15.153
Peng Zhou,Mingyu Zhang,Liping Wang,Qizhong Huang,Zhean Su,Ping Xu,Renhao Zou,Xiaodong Wang,Cen Zeng,Kaixun Ba
The slow kinetics and poor structural stability prevent transition metal selenides from being widely used in sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs). Herein, the “flower-like” porous carbon anchored by Zn-Mn binary selenides (ZMS@FC) composites are fabricated by selenizing the modified hierarchically metal-organic frameworks. The 2D conductive hierarchically flakes’ abundant pore structure and multiple active sites shorten the ion diffusion length and promote conductivity, while the synergistic effect of the binary metals and intrinsic large pseudocapacitive contribution effectively improve capacity and rate performance. ZMS@FC composites exhibit impressive rate capability of 294.4 mA h g –1 at 10 A g –1 and excellent cyclic stability with 369.6 mA h g –1 specific capacity retention at 2 A g –1 after 1000 cycling in SIBs. It is noted that 156.9 mA h g –1 can be retained at 5 A g –1 and 227.0 mA h g –1 is remained after 500 cycles at 2 A g –1 in PIBs. The ex situ X-ray diffraction patterns and transmission electron microscopy pictures are used to confirm the conversion reaction processes of the Zn-Mn-Se. Designing high-performance energy storage materials may benefit greatly from the universal synthesis technology of bimetallic sulfide anodes for enhanced SIBs and PIBs.
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Tongtong Jiang,Haibo Hu,Fengcai Lei,Junjie Hu,Mingzai Wu,Derek Ho
The simultaneous realization of confined growth and doping of transition metals within carbon hosts promises to deliver unusual bifunctional catalytic activity but still remains challenging due to the difficulty in achieving synchronous nucleation and diffusion of metallic ions in a single synthesis step. Herein, we present a simple synthesis strategy capable of concurrently realizing geometric confined growth and doping of transition metals within graphene hosts, demonstrated in Co,N-codoped graphene-confined FeNi nanoparticles (Co,N-GN-FeNi). The obtained Co,N-GN-FeNi can take full advantage of the hierarchy of interactions between the confined-grown FeNi nanoparticles (for high oxygen evolution reaction (OER) activity) and the Co,N-codoped graphene hosts (for high oxygen reduction reaction (ORR) activity). The overall structure is a rationally designed synergy that simultaneously realizes (i) adequate exposure of electroactive sites, (ii) effective protection against corrosion/aggregation of FeNi nanoparticles, and (iii) rapid transport of ions/electrons between the interfaces. As a result, Co,N-GN-FeNi exhibits excellent bifunctional electrocatalytic activity relying on a low ORR/OER subtraction (ΔE = 0.81 V). Subsequent combination with a planar electrode configuration and a solid polymer electrolyte further demonstrates the utilization of Co,N-GN-FeNi as air cathode bifunctional electrocatalysts in a solid-state rechargeable micro-Zn–air battery (SR-MZAB), which exhibits a large open-circuit voltage of 1.39 V, a high power density/specific capacity of 62.3 mW cm–2/763 mAh g–1, excellent durability (126 cycles/42 h), and mechanical flexibility. This work demonstrates an effective synthesis strategy for concurrently realizing geometric confined growth and doping of transition metals within carbon hosts, for enhanced bifunctional catalytic activity toward novel SR-MZABs with high energy efficiency, security, and flexibility for wearable micropower sources.
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xiudan Hou,Zirou Wang,Hui Yu,Yufei Liu,Qingli Yang
Excess residues of organophosphorus pesticides in traditional Chinese medicinal herbs has been driving the development of rapid and specific detection methods. Herein, a dual-mode sensing platform was established for the simultaneous determination of glyphosate and profenofos using the colorimetric and fluorescence sensors, respectively. A Zn-incorporated porous coordination network-224 (PCN-224) was prepared to selectively adsorb glyphosate based on the coordination effect of Zr and phosphate ion, which would inhibit the peroxidase-like activity of PCN-224(Zn). An aptamer-modified nitrogen-carbon quantum dots (N-CQDs) was used to specifically recognize profenofos, further adopting the quenching effect of PCN-224(Zn) towards N-CQDs to realize the quantitative analysis. The colorimetric sensing mechanism was also studied. Coupled with a smartphone application, the established method exhibited the linearity of 0.06–3.1 μg mL −1 (glyphosate), and 0.02–3.9 μg mL −1 (profenofos). The matrix effect was 100.58 % and 95.46 % in Angelica sinensis and Codonopsis , presenting a new horizon for the multi-model sensor in real samples.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Xiupei Yang,Ling Jiang,Baowen Zhang,Jie Hu,Xiaoyan Cui,Qian Zhang
Accurate monitoring of copper ions (Cu 2+ ) and lipoic acid (LA), essential trace elements and antioxidants in vegetables, is critical for food safety and human health. Here, we developed mercaptopurine-stabilized gold-silver bimetallic nanoclusters (MP-AuAg NCs) as a fluorescence 'turn-off' probe for Cu 2+ detection, achieving a linear response of 0.05–20 μM with a detection limit of 23 nM (LOD). To enhance sensitivity, a ratiometric probe (Zn MOF@MP-AuAg NCs) was engineered by in situ growth of zinc metal organic frameworks (Zn MOF) in the nanoclusters, which reduced Cu 2+ LOD to 4 nM (linear range: 0.015–0.50 μM). Interestingly, the Cu 2+ quenched system functioned as a 'turn on' sensor for LA detection, offering a dual range response: exponential correlation from 0.3 to 80 μM (R 2 = 0.997) and linear quantification from 0.3 to 25 μM (LOD = 94 nM, R 2 = 0.998). Validated in spinach samples, the method demonstrated exceptional precision (recoveries: 96.5–102 %) and precision (RSD <3.12 %), confirming its reliability for sequential Cu 2+ -LA analysis in complex food matrices. This work establishes a versatile sensing platform with enhanced sensitivity and practical utility for food quality monitoring.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Chen Li,Min Yuan,Yang Liu,Haikuo Lan,Yuting Chen,Zhenjiang Li,Kang Liu,Lei Wang
The oxygen reduction procedure requires the development of an extremely effective, easily fabricated, and non-noble metal electrocatalyst. In this paper, we offer an unique method for manufacturing a defect-rich Fe single-atom catalyst loaded on the N-doped porous carbon nanosheets carrier (Fe-N 4 @NC-PCSs) by in-situ pyrolysis of a double-layered leaf-like compound (ZIF-L@PDA-FePhen) using dopamine hydrochloride aided precursor ZIF-L. The Fe-N 4 @NC-PCSs catalyst exhibits exceptional oxygen reduction reaction (ORR) activity across the pH-universal range, particularly in alkaline electrolytes, with a prominent half-wave potential of 0.938 V, outperforming practically previously described non-noble electrocatalysts as well as the commercial Pt/C catalyst (0.84 V). At pH-universal, the Fe-N 4 @NC-PCSs catalyst exhibits exceptional half-wave potential and an impressive electron/proton transfer ability resulting from its rich iron nitrogen active sites and a significant number of metal defects. Furthermore, the liquid zinc-air battery, as well as the flexible solid-state battery based on Fe-N 4 @NC-PCSs work excellently, with open circuit voltage of 1.465 V, maximum peak power density of 207 mV cm −2 , and good charge–discharge endurance and mechanical flexibility. Calculations using density functional theory show that graphitic nitrogen can improve the local electronic redistribution for active sites and give them a lower free-energy barrier to ORR. This work serves as motivation for the creation of nitrogen moiety regulation extremely reactive atomic metal catalysts.
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Min Hou,Hou Cong Li,Ning An,Si Yan Pang,Wen Ge Li,Jing Tong
Three metal complexes [Ni 2 (HL) 2 (C 2 H 5 OH) 2 Cl 2 ]·2C 2 H 5 OH (complex 1), [Co (HL) (L)] (complex 2) and [Zn 2 (HL) 2 (CH 3 COO) 2 ] (complex 3) derived from 5-bromosalicylaldehyde-2-(2-aminophenyl)benzimidazole Schiff base ligand (H 2 L) were synthesized and characterized by infrared (IR) spectroscopy, thermogravimetric (TG) analysis and powder X-ray diffraction (XRD). Single crystal X-ray diffraction analysis confirmed that complex 1 crystallized in binuclear octahedral structure with space group P2 1 /C and complex 2 displayed in mononuclear octahedral structure with space group P 121/c 1. While complex 3 produced binuclear pyramid structure with space group P 121/c 1. Herein, cobalt (Ⅱ) salt was oxidized to form Schiff base cobalt (Ⅲ) complex by coordinating three deprotonated groups. The MTT method was employed to determine the three complexes in vitro cytotoxicity effects against human lung cancer cells (A-549), liver cancer cells (SMMC-7721), breast cancer cells (MDA-MB-231) and nasopharyngeal carcinoma cells (CNE-2Z). The results showed that Co (Ⅲ) complex has significant anticancer activity against human breast cancer MDA-MB-231 cells compared with cisplatin. The further study of its anticancer mechanisms exhibited that Co (Ⅲ) complex could inhibit MDA-MB-231 cells proliferation through both apoptosis and DNA replication inhibition.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Mengxia Shen,Qingqing Liu,Jiaojiao Sun,Chanjuan Liang,Chuanyin Xiong,Chen Hou,Jianfeng Huang,Liyun Cao,Yongqiang Feng,Zhen Shang
Single-atom catalysts (SACs), with precisely controlled metal atom distribution and adjustable coordination architecture, have gained intensive concerns as efficient oxygen reduction reaction (ORR) electrocatalysts in Zn-air batteries (ZAB). The attainment of a monodispersed state for metallic atoms anchored on the carbonaceous substrate remains the foremost research priority; however, the persistent challenges lie in the relatively weak metal-support interactions and the instability of captured single atom active sites. Furthermore, in order to achieve rapid transport of O 2 and other reactive substances within the carbon matrix, manufacturing SACs based on multi-stage porous carbon substrates is highly anticipated. Here, we propose a methodology for the fabrication of carbon aerogels (CA)-supported SACs utilizing papermaking nanofibers , which incorporates advanced strategies for N -atom self-doping, defect/vacancy introduction, and single-atom interface engineering. Specifically, taking advantages of using green and energy-efficient feedstocks, combining with a direct pore-forming template volatilization and chemical vapor deposition approach, we successfully developed N -doped carbon aerogels immobilized with separated iron sites (Fe-SAC@N/CA-Cd). The obtained Fe-SAC@N/CA-Cd exhibited substantially large specific surface area (S BET = 1173 m 2 /g) and a multi-level pore structure, which can effectively mitigate the random aggregation of Fe atoms during pyrolysis. As a result, it demonstrated appreciable activity and stability in catalyzing the ORR progress (E 1/2 = 0.88 V, E onset = 0.96 V). Furthermore, the assembled liquid electrolyte-state Zn-air batteries (LES-ZAB) and all-solid-state Zn-air battery (ASS-ZAB) also provides encouraging performance, with a peak power density of 169 mW cm −2 for LES-ZAB and a maximum power density of 124 mW cm −2 for ASS-ZAB.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COORDINATION CHEMISTRY
·
2024
·
IF 2.2
Ying Zhou,Xiao-Tong Song,Hui-Chao Guan,Shu-Mei Yue
In this investigation, six new metal complexes with 2-(pyridin-2-yl)benzo[d]imidazole (bpm) were synthesized and analyzed by single-crystal X-ray diffraction (XRD), including catena-bis[(µ-2,2-bis(4-carobxyphenyl)hexafluoropropane)-(2-(pyidin-2-yl)-1H-benzimidazole)-aqua-zinc] (1), catena-[(µ-2,2-bis(4-carobxyphenyl)hexafluoropropane)-(2-(pyidin-2-yl)-1H-benzimidazole)-aqua-cadmium] (2), aqua-[2,2-bis(4-carobxyphenyl)hexafluoropropane]-bis[2-(pyridin-2-yl)-1H-benzimidazole]-manganese (3), μ-[2-nitrobenzene-1,4-dicarboxylato]-μ-[2-nitrobenzene-1,4-dicarboxylato]-bis[2-(pyridin-2-yl)-1H-benzimidazole]-di-zinc (4), catena-[bis(µ-2-nitrobenzene-1,4-dicarboxylato)-diaqua-bis(2-(pyridin-2-yl)-1H-benzimidazole)-di-cadmium] (5), aqua-[pyridine-2,6-dicarboxylato]-[2-(pyridin-2-yl)-1H-benzimidazole]-copper hydrate (6) (H2hfipbb = 2,2-bis(4-carboxyphenyl)hexafluoropropane, H2nbdc acid = Nitroterephthalic acid, and H2pda = 2,6-pyridinedicarboxylic acid). Complex 1 crystallized in a monoclinic system with space group P21/n; 2 crystallized in a monoclinic system with space group C2/c; 3 crystallized in an orthorhombic system with space group Pna21; 5 crystallized in a monoclinic system with space group P21/c; 4 and 6 crystallized in triclinic systems with space group P-1. The DNA-binding modes of the complexes were investigated by several analysis methods (e.g. viscosity analysis, circular dichroism spectroscopy, fluorescent spectroscopic analysis, as well as UV spectroscopic analysis). Complexes 1-6 bind to calf thymus DNA via an intercalative mode. The results of this study provide insights into the mechanism of DNA binding and provide a basis for rationally designing new powerful reagents for DNA detection and targeting.
✓ 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）