Catalysis Science & Technology
·
2025
·
IF 4.2
Bin Guan,Junyan Chen,Lei Zhu,Zhongqi Zhuang,Xuehan Hu,Chenyu Zhu,Sikai Zhao,Kaiyou Shu,Hongtao Dang,Junjie Gao,Luyang Zhang,Tiankui Zhu,Wenbo Zeng,Minfan Qian,Zhangtong Li,Yang Lu,Shuai Chen,Zhen Huang
Herein, Co–Zn bimetallic center-modulated ZIF-67@ZIF-8 composites were prepared by ultrasonic synthesis, and the effects of the metal ratio on the photothermal coupling catalytic CO2 reduction performance and product selectivity were systematically investigated. The experiments showed that catalysts with higher Zn content (e.g., Co0.1Zn0.9) exhibited higher CH4 selectivity (29.32%), while the high Co ratio (e.g., Co0.9Zn0.1) significantly enhanced the CO generation rate (3.13 μmol g−1 h−1). Characterization by N2 adsorption, XRD, XPS, UV-vis DRS, and in situ DRIFTS revealed that the metal ratio affected the CO2 adsorption and electron transport efficiency by modulating the catalyst specific surface area (1213 → 555 m2 g−1), the band gap width (3.53 → 3.39 eV), and the distribution of the surface-active sites. The DFT calculations further revealed the synergistic effect of Co/Zn: high Zn content lowers the *CHO generation barrier (3.45 eV) and promotes the CH4 pathway, while the Co center enhances CO2 activation. This study provides a theoretical and experimental basis for the optimization of CO2 reduction product selectivity through precise regulation of metal centers.
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Small
·
2025
·
IF 12.1
Jiachen Meng,Zhaofan Zhou,Yanqin Fu,Yulei Zhang
Despite the great potential of Fe single-atom catalysts (SACs) to replace platinum-based materials for oxygen reduction reaction (ORR), their synthesis is hindered by the strong tendency of atomic migration/aggregation and uncontrollable substrate etching during fabrication, impeding the direct synthesis of Fe SACs in the rational-designed cathode for Zn-air batteries. Herein, a self-supporting hydrophobic edge-rich graphene (ERG) membrane serves as a conductive carbon skeleton in the air cathode. Through a cascade limiting strategy involving α-D-glucose and melamine, atomically dispersed Fe–NC SACs are synthesized on the surfaces of ERG sheets without substrate damage. Systematic studies confirm that the chelation of Fe ions and their binding to N-species at elevated temperatures are critical to achieving atomic dispersion. By optimizing the molar ratio of α-D-glucose/Fe(III) ions and utilizing the hydrophobic porous framework, the Zn-air battery assembled with ERG@Glu&Fe-40-Mel membrane achieves a peak power density of 132 mW cm −2 and the enhanced stability compared to that employing commercial Pt/C catalyst.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Kaicheng Yao,Haoqiang Zhang,Rongze Ma,Yanni Lang,Dan Wu,Liang Xu,Aning Ma,Yongjin Li,Dacheng Zhou,Zhiguo Song,Yugeng Wen,Yong Yang,Jin Han,Jianbei Qiu
Upconversion luminescence (UCL) of chiral inorganic nanostructured composite material and their applications have been challenging. This paper reports a successful preparation of Er 3+ /Yb 3+ co-doped chiral inorganic nanostructured BiOCl/Zn composite material (D-BYE-Zn) using a hydrothermal method and subsequent air annealing. The D-BYE-Zn phosphor significantly increased the intensity of UCL compared with the Er 3+ , Yb 3+ co-doped achiral bismuth oxychloride phosphor (A-BYE) and chiral bismuth oxychloride phosphor (D-BYE). Our study suggests that free electron leaps from the Zn fraction onto BiOCl may be responsible for the enhanced UCL. In addition, the temperature sensitive behavior of the D-BYE-Zn phosphor has been evaluated using the thermally coupled levels (TCLs) and non-thermally coupled levels (NTCLs) of Er 3+ and the maximum relative sensitivities (S R ) obtained are 0.95 % K −1 and 1.65 %K −1 (323 K). Our work provides a new strategy for constructing rare-earth doped chiral inorganic nanostructured composite materials to realize UCL enhancement while promising a wide range of applications in light source temperature measurement.
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Sustainable Materials and Technologies
·
2025
·
IF 9.2
Xianjin Qi,Guizhi Yan,Boyu Du,Mengmeng Wang,Yongkui Li
Arsenic (As) contamination is a global problem that requires innovative remediation, this study successfully synthesized a novel MnFe 2 O 4 -Zn/Co ZIFs@MIL-53(Fe) (MFZM) using a solvent method to remove As(V) from contaminated water. The MFZM exhibited a rhomboidal dodecahedron structure with a high specific surface area of 158.93 m 2 /g, which contributed to its exceptional adsorption performance under both acidic and neutral pH conditions. Notably, the adsorption capacity for As(V) reached approximately 599.90 mg/g at an equilibrium concentration of 500 mg/L, surpassing the performance of several previously reported adsorbents. The kinetic modelling results indicated that the adsorption process followed a pseudo-second-order mechanism, suggesting chemisorption as the dominant process. However, the isotherm studies demonstrate favorable single-layer adsorption, with the Langmuir model providing the best fit for the experimental data. The X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS) analysis revealed that the Fe/Mn/Co on the MFZM surface can hydrolyze and generate Fe/Mn/Co-OH groups under pH conditions ranging from 3 to 7, facilitating the formation of stable coordination complexes with As(V). Furthermore, the MFZM provided abundant positively charged adsorption sites that effectively attracted HAsO 4 2− via electrostatic interactions, leading to efficient As(V) removal. These findings underscore the potential of the MFZM as a promising adsorbent for the effective remediation of As-contaminated wastewater, supporting sustainable environmental management.
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ACS Nano
·
2025
·
IF 16
Fengbo Wang,Xiyu He,Guangmeng Qu,Muhammad Mamoor,Yanjun Zhai,Lu Wang,Bin Wang,Zhongxin Jing,Yueyue Kong,Dedong Wang,Lingtong Kong,Liqiang Xu
The application of a flexible Zn–air battery (FZAB) in next-generation wearable electronics is mainly hindered by the sluggish oxygen reduction/evolution reaction (ORR/OER) and unstable Zn/electrolyte interface, particularly at relatively high-rate ability (10 mA cm–2). Herein, a Fe2N/pyridinic N-rich coordinated Fe single atom (defined as “Fe2N/PR-Fe SA”) heterostructure is designed for optimizing the plane-symmetric Fe-4N coordination, which demonstrates outstanding bifunctional electrocatalytic performance with a low ORR/OER potential gap of 0.63 V. Experimental analyses and theoretical calculations reveal that the electronic structure of Fe single atoms, derived from the synergistic interaction between Fe2N with a triangular pyramidal Fe3N coordination and pyridinic FeN4, can effectively accelerate the desorption of the *OH intermediate in the ORR and optimize the *OOH/*O adsorption behavior during the OER process. Moreover, the in situ hydrogel electrolyte (HGE) is designed on the surface of the zinc anode to limit interface water content and eliminate the formation of deposition “hot spots” for improving Zn electrochemical reversibility (203 h at 1 mA cm–2/1 mA h cm–2 with Zn//Zn-symmetric battery). Therefore, the constructed FZAB based on Fe2N/PR-Fe SA and the in situ HGE exhibits a high maximum power density (157.3 mW cm–2), a long lifetime (193 h at 2 mA cm–2), small discharge/charge voltage polarization (0.81 V at 10 mA cm–2), and excellent mechanical flexibility.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 7.7
Yan Jiang,Yuying Xin,Hui Zhao,Xianfa Zhang,Ping Wang,Rui Gao,Yingming Xu,Shan Gao,Xiaoli Cheng,Lihua Huo
The reasonable design and preparation of high-performance sensing materials for detecting NO 2 is of importance to environmental conservation and public health. Herein, porous Zn-doped In 2 O 3 microtubes were fabricated by simple Zn(NO 3 ) 2 solution etching of In-MOF microrods, followed by calcination at 500 ℃ in air. The experiment has confirmed that appropriate amount of Zn introduced into In 2 O 3 can optimize electronic structure, increase the number of oxygen vacancy and efficiently improve NO 2 sensing property. In particular, compared with pristine In 2 O 3 , Zn-In 2 O 3 sensor exhibits excellent selectivity, high response, fast recovery speed (32 s) and lower limit of detection (LOD, 20 ppb) at room temperature. Meanwhile, the Zn-In 2 O 3 sensor also presents outstanding reproducibility, stability and humidity resistance. The excellent gas sensing property is traced to the construction of the hollow and porous structure and the synergistic optimization of Zn doping. This endeavor yields a simple strategy for the design of high-property gas sensing materials.
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JOURNAL OF POWER SOURCES
·
2026
·
IF 7.9
Yiran Liu,Hanling Guo,Ruyi Jing,Enhui Zhang,Fengxian Gao,Min Gong,Xiang Lin,Liang Zhang,Dongrui Wang
Rechargeable aqueous Zn||MnO 2 batteries using near-neutral electrolytes have attracted considerable interest owing to their environmental benignity and high safety. However, MnO 2 cathodes with high mass loading suffer from sluggish reaction kinetics and structural degradation during long-term cycling, particularly under low-current-density conditions. Limited ion diffusion in thick electrodes results in capacity fading, while slow proton intercalation aggravates irreversible phase transitions, leading to active material dissolution and rapid capacity loss. To address these challenges, we propose a dual-modification strategy involving Ce doping and reduced graphene oxide (rGO) coating. The charge compensation effect induced by Ce doping increases the Mn 3+ /Mn 4+ ratio in MnO 2 from 0.36 to 0.61, effectively optimizing the electronic structure and improving lattice stability. Meanwhile, the constructed three-dimensional rGO conductive network reduces interfacial charge-transfer resistance and alleviates volume strain during cycling. Benefiting from this synergistic effect, the composite cathode achieves an areal capacity of 2.05 mAh cm −2 at 0.1C and retains 77.8 % of its initial capacity over 507 cycles at 2 C. This work offers a novel synergistic strategy for designing high-mass-loading cathodes and advances the practical implementation of Zn||MnO 2 batteries in grid-scale energy storage.
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International Journal of Electrochemical Science
·
2023
·Vol. 13
·期 2
·1423-1440
·
IF 1.5
Ruizhuo Ouyang,Lina Xu,Haifeng Wen,Penghui Cao,Pengpeng Jia,Tian Lei,Xia Zhou,Mei Tie,Xiaolei Fu,Yuefeng Zhao,Haizhou Chang,Yuqing Miao
A novel indium doped bismuth hybrid nanofilm was prepared on a glassy carbon electrode (Bi@In/GCE) and successfully used for the simultaneous measurements of aqueous zinc (Zn(II)), cadmium (Cd(II)) and lead (Pb(II)). The Bi@In hybrid nanofilm was greatly improved in the ability of electron transfer, surface morphology as well as hydrophilicity over single Bi or In film, and exhibited well-defined and separate peaks for Zn(II), Cd(II) and Pb(II) by square wave stripping voltammetry. Analytical characteristics of the developed Bi@In/GCE were explored by comparing with single Bi and In film modified electrodes with calibration curves, which exhibited the most preferable electrochemical behaviors toward three metals as predicted. The synergistic effect of Bi and In mainly contributed to the enhanced electrochemical activity of the new electrode. In the concentration range of 0-120 µg L -1 , a good linear relationship was achieved between the peak current and the metal concentration with correlation coefficient higher than 0.995. The detection limits were calculated to be 0.52, 0.15 and 0.67 µg L -1 for Zn(II), Cd(II) and Pb(II) (S/N=3), respectively. The analysis of river sample with Bi@In/GCE was performed with satisfactory recoveries higher than 98%, suggesting that the new method is promising as a simple, sensitive and efficient approach to detect the heavy metals in water samples.
研究领域:
分析化学
·
环境监测
·
电化学传感
·
纳米材料
·
水污染检测
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Journal of Inorganic and Organometallic Polymers and Materials
·
2013
·Vol. 23
·期 6
·1492-1500
·
IF 1.174
Zhang Nan,Fan Yu-Hua,Bi Cai-Feng,Zhang Xia,Zhang Peng-Fei,Zhang Zhong-Yu,Li Xin
Three novel transition metal coordination polymers, [Ni(C 18 H 16 N 3 O 2 ) 2 ·2CH 3 OH]
n
( 1 ), [Zn(C 18 H 16 N 3 O 2 ) 2 ·4CH 3 OH]
n
( 2 ) and [Cd(C 18 H 16 N 3 O 2 ) 2 ·2CH 3 OH]
n
( 3 ) (C 18 H 16 N 3 O 2 =2-acetylpyridine- d -tryptophan) were synthesized and characterized by elemental analysis, IR, UV, 1 H NMR and X-ray diffraction single crystal analysis. The analyses of the structures indicate that all three materials crystallize in the tetragonal crystal system, space group P 4 1 2 1 2. They have similar structures; i.e., the Schiff base coordinates in its deprotonated form and behaves as a hexadentate (4N+2O) coordinated ligand to form a distorted octahedron geometry. On the other hand, as a result of the alternate arrangement of chains through N–H···O intermolecular hydrogen bonds interactions, 2-D layers are formed for the three complexes. Furthermore, the luminescent properties and thermal stabilities of the three complexes were investigated.
研究领域:
无机化学
·
配位化学
·
材料化学
·
晶体工程
·
光物理化学
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FUEL
·
2026
·
IF 7.5
Xiaolong Li,Bibo Li,Guorong Lei,Mingcheng Ge,Liu Deng,Jianguo Zhang,Zhimin Li
A 2D coordination polymer [Zn(ATRZ) 2 (H 2 O) 2 ](ATRZ)(CBH) 2 ·2H 2 O, ( ZAC ) was constructed using 4,4′-azobis-1,2,4-triazole (ATRZ) as the linker, Zn 2+ as the node, and active cyanoborohydride (CBH) as the dissociative anion. Its crystal structure and properties were characterized by X-ray diffraction (XRD), differential scanning calorimetry-thermogravimetry (DSC-TG), oxygen bomb calorimetry, and mechanical sensitivity measurements (X-ray density: 1.548 g·cm −3 ; thermal decomposition temperature, T d : 179.14 °C; specific energy, E g : 15.76 kJ·g −1 ; energy density, E v : 24.40 kJ·cm −3 ; impact sensitivity, IS: 30 J; friction sensitivity, FS: 288 N). ZAC is characterized by a unique 2D polymer stabilized by the coordination of Zn 2+ with linker ATRZ and aqua ligands, while free ATRZ, CBH anion and crystal water are packed in the polymer. The combustion performance of ZAC /KClO 4 ( ZACK ) composite was evaluated in detail (Heat of combustion: 5.25 kJ·g −1 ; peak pressure: 3.23 MPa; response time: 11.07 ms; linear burning rate: 124.6 mm·s −1 ). Improved performance relative to conventional BPN (B/KNO 3 ) was observed, highlighting its potential for energetic materials applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.7
Dan Wang,Yankun Wei,Xiaosong Li,Jinxiang Chou,Yukai Chen,Xiaojiao Du,Wenchang Wang,Naotoshi Mitsuzaki,Zhidong Chen
The construction of edge-hosted Fe N sites presents a promising way to boost catalytic performance of typical Fe N sites for the oxygen reduction reaction (ORR). However, the controllable synthesis of densely accessible edge-hosted Fe N sites remains challenging. Herein, an oxalate anion-assisted strategy is developed for precise preparation of densely edge-hosted Fe N 4 atomic sites for ORR. The strong coordination between oxalate anions and Fe 3+ ions facilitates the formation of dense edge-hosted Fe N 4 atomic sites. The subsequent decomposition of oxalate anions creates a hierarchically porous structure. Remarkably, the obtained e -FeNC exhibits improved ORR activity in acidic (0.79 V) and alkaline (0.89 V) electrolytes, a higher site density (SD), and an enhanced turnover frequency (TOF, 3.71 s −1 ). Density functional theory calculations reveal that edge FeNC sites exhibit a lower energy barrier for ORR than center FeNC sites. The downward shift of the d-band center weakens the adsorption of ORR intermediates, accounting for the high intrinsic activity of edge FeNC sites. Additionally, the assembled Zn-air battery displays a high specific capacity of 781 mAh g −1 , a large energy density of 999 Wh kg Zn −1 , and outstanding cycling performance over 550 h with minimal voltage gap of 0.84 V.
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BIOSENSORS & BIOELECTRONICS
·
2026
·
IF 11.8
Kai Liu,Yuanyuan Ren,Jun Wang,Xue Zhang,Jiaxing Sun,Huitong Xu,Kewei Zhang,Song Yang
Ammonia (NH 3 ) in exhaled breath is a promising biomarker for non-invasive monitoring of metabolic disorders, but achieving selective and sensitive detection under complex breath environments remains challenging. Here, we report a bioinspired g-C 3 N 5 @Zn-TCPP heterojunction formed through π-π stacking that enables molecular-recognition-driven breath NH 3 sensing. Inspired by the synergistic functions of ammonium transporter (AmtB) and ammonia monooxygenase (AMO), this heterostructure integrates pore-confined molecular enrichment with interfacial electric-field regulation. The intrinsic aperture of Zn-TCPP (∼2.8 Å), closely matching the kinetic diameter of NH 3 (2.6 Å), enables size-selective molecular sieving, while the g-C 3 N 5 -induced interfacial electric field modulates the electronic environment of Zn 2+ active sites and strengthens Lewis acid-base interactions with NH 3 molecules. Benefiting from this synergistic molecular recognition mechanism, the optimized 0.08@g-;C 3 N 5 @Zn-TCPP sensor achieves a remarkable response (R 0 /R g = 223 toward 5 ppm NH 3 ), a low detection limit of 232 ppb, and excellent durability over 1000 bending cycles at room temperature. Machine-learning-assisted analysis further enables accurate discrimination of NH 3 from interfering gases (R 2 = 0.91). The sensor also distinguishes breath NH 3 variations between healthy individuals and disease-related samples, highlighting its potential for intelligent non-invasive breath analysis. This work establishes a bioinspired molecular recognition strategy by coupling pore confinement with interfacial electric-field regulation, providing a new paradigm for selective gas sensing and wearable health-monitoring platforms.
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