Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Meiqi Wang,Jialiang Kang,Jia Yang,Zhuoxin Wen,Manman Zhao,Zhanxiong Li
This study successfully introduced zinc-based layered metal hydroxides (Zn-LMHs) onto the fiber surface and subsequently transformed them into ZnO micro-nanostructures through a controlled process. In conjunction with low-surface-energy organosilicon materials, these structures facilitated precise modulation of the micro-nano structural features on the fiber surface. The crystalline characteristics of the ZnO micro/nano flower-like architectures on the cotton fiber surface were systematically investigated using XRD. The results confirmed that the micro/nano flower structure size could be controlled by optimizing the production parameters. SEM and AFM revealed a substantial increase in root mean square roughness (Rq = 164.0 nm), arising from cooperative interfacial coupling effects between architecturally engineered zinc oxide (ZnO) hierarchical micro-nano floral assemblies and siloxane-based surface modification layers. The modified cotton fabric exhibited remarkable superhydrophobic characteristics, achieving a water contact angle of 165.8° and a rolling angle of 5.0°. Thermogravimetric analysis (TGA) revealed that the treated cotton fabric displayed improved thermal stability, with a final decomposition temperature of 454.2 °C and a residual carbon content of 20.3 %. Moreover, the functionalized fabric demonstrated exceptional performance in terms of self-cleaning, antifouling, durability, and recyclability, alongside superior UV resistance and antibacterial properties. A novel and effective strategy for designing and fabricating advanced multifunctional textiles is proposed in the study.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 35
·17032-17039
·
IF 3.925
Yunxiao Zhang,Wenhua Xiao,Yuan Yin,De Zheng Peng,Hongqiang Wang,Minjie Zhou,Zhaohui Hou,Yu Liu,Binhong He
Using metal-free heteroatom-doped carbon material electrocatalysts with high efficiency and low cost for oxygen reduction reaction (ORR) to replace Pt or its alloys is a major task for promoting the reaction efficiency of fuel cells. Here, we report the rational design of three-dimensional (3D) ultra-thin N-doped porous graphene-like carbon (NPC) catalyst based on amino acid zinc chelates containing ligand bonds as both templates and nitrogen sources. During high-temperature annealing treatment, the evaporation of Zn is beneficial to produce a hierarchical porous structure, higher specific surface area and more defect sites. A 3D ultra-thin graphene-like covalently crosslinked polymer with a multilayer network structure was formed by a condensation reaction of amino acid Zn complexes. Under the optimized pyrolysis temperature, the as-obtained NPC-1050 catalyst has a higher defect density and graphitic-N/pyridinic-N ratio, and exhibits an excellent ORR catalytic performance. The half-wave potential, onset potential and limiting current density are 0.878 mV, 0.970 mV and 5.64 mA cm−2, respectively. In addition, it also showed a competitive performance when compared to commercial Pt/C catalysts in Zn-air batteries. The present route may provide new insights into the synthesis of polypeptide or protein metal complexes, and their application in energy fields.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Shixuan Zhu,Dexu Zhang,Zhihong Xue,Yiqiang He,Cailing Chen,Zhan Shi
Establishing robust atomic-level interfaces, particularly through the selective modulation of surface active sites within heterojunctions to achieve superior solar energy conversion, remains largely unexplored. Herein, sulfur vacancy sites (V S ) in ZnIn 2 S 4 (ZIS) are selected, driven by the interaction between unsaturated zinc sites and the nitrogen-rich sites of g-C 3 N 4 , forming a step-scheme (S-scheme) heterojunction. The defect-induced interfacial Zn–N–C bonds not only provide rapid channels at the atomic level, thereby lowering the energy barrier for charge transfer, but also selectively tune the highly active pyrrolic N site to enhance H 2 evolution. Furthermore, molecular dynamics simulations (MD) combined with density functional theory (DFT) calculations reveal that V S regulates the pyrrolic N sites within the heterojunction, leading to a reduction in the Gibbs free energy for hydrogen production. Kinetic analysis by carrier transport activation energy (CTAE) indicates that the charge transfer energy barrier is accelerated, decreasing from 211.20 eV for ZIS/CN-360 % to 155.71 eV for V S -ZIS/CN-360 %. Consequently, the designed catalyst significantly enhances the H 2 yield (27.94 mmol g −1 h −1 ) in the absence of platinum. This work emphasizes the importance of generating defect-induced interfacial atomic channels, as well as changes in the surface microenvironment, which underscore the significance of defect heterostructures in promoting the photocatalytic process.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yisi Liu,Zhicheng Chen,Nian Zhao,Guangcong Tong,Zongxu Li,Biqiong Wang,Yue Du,Qiyun Pan,Zhong Li,Yunlong Xie,Yahui Yang
Rational design and accessible fabrication of bifunctional electrocatalysts with high electrocatalytic activity, low price and good durability for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are urgently required for metal-air batteries, but it remains as a difficult and hot subject. Herein, we report a novel cobalt-ion-exchange and pyrolysis strategy with the well-designed bio-MOF-1 as the self-template to prepare ultra-small cobalt nanoparticles embedded into N-doped hierarchical porous carbon (Co@N-HPC-800) with excellent electrical conductivity, high surface area and abundant Co-N 4 active sites. The electrochemical test results verify the outstanding bifunctional electrocatalytic activity and stability of Co@N-HPC-800 in alkaline condition, even outperforming the commercial Pt/C + RuO 2 electrocatalysts. The in situ Raman technique demonstrates the ORR and OER catalytic process occur through the redox of Co(II) and Co(III) species. The rechargeable Zn-air battery (ZAB) assembled with Co@N-HPC-800 cathode deliveries an open circuit voltage of 1.42 V, a specific capacity of 129 mAh cm −2 , a peak power density of 89.1 mW cm −2 , and stable cyclability over 85 h at 5 mA cm −2 by refreshing the electrolyte. The Co@N-HPC-800 cathode in a flexible quasi-solid-state ZAB exhibits good flexibility and stability under different bending states. This work paves a simple and valuable way for designing non-noble high-efficient bifunctional electrocatalysts in Zn-air batteries and related energy storage and conversion technologies.
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高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Hao Shi,Haozhen Li,Xing Zhou,Chongqing Yang,Hengyong Tu,Jun Tong,Longkai Xiang,Chao Ma,Lei Zhu,Zhen Huang
Spinels have been widely employed as contact layers (CLs) on metallic interconnects for solid oxide cells (SOCs) with the required electrical conductivity and Cr block ability. In this work, MnCo2O4 spinels doped with different transition metals (Cu, Ni, and Zn) were deposited on precoated SUS441 stainless steel as CLs. A positive doping effect of Cu and Ni on increasing the concentration of Mn4+/Mn3+ and Co3+/Co2+ hopping pairs was observed, whereas a negative doping effect of Zn on electrical conductivity was confirmed, which was reflected in the data of X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectra (XAS). The Cu-doped Mn1Co1.7Cu0.3O4 spinel exhibited the best electrical conductivity with a low area specific resistance (ASR) value of 4.5 mΩ·cm2 at 850 °C. A relative degradation test demonstrated that Mn1Co1.7Cu0.3O4 maintained significant performance during a 200 h isothermal process. Cross-sectional observations revealed that the thickness of the Cr oxide scale formed during the degradation test was much reduced by the Mn1Co1.7Cu0.3O4 CL, which was attributed to the improved resistance to Cr oxidation. The present work shed light on the design of highly conductive CLs in SOCs.
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Advanced Optical Materials
·
2023
·Vol. 12
·期 12
·2302611
·
IF 9
Yining Wang,Mengmeng Shang,Yixin Sun,Yiying Zhu,Xiaole Xing,Peipei Dang,Jun Lin
The development of the new generation of smart near infrared (NIR) light sources is a problem demanding prompt solution with the increasing role of NIR spectroscopy in security, food, medical treatment, agriculture, and other fields. In this work, Cr 3+ doped ANb 2 O 6 (A = Zn/Mg) phosphors are successfully developed, which generate a NIR emission with a peak at 930 nm covering 750–1300 nm under excitation of 515 nm light. Thanks to the small Stokes shift, the internal quantum efficiency (IQE) values of the optimal samples of ZnNb 2 O 6 :Cr 3+ and MgNb 2 O 6 :Cr 3+ reach up to 70% and 62%, respectively. This ultra-broadband NIR emission originates from the simultaneous occupation of [AO 6 ] and [NbO 6 ] octahedrons by Cr 3+ , which is confirmed by the excitation wavelength-dependent emission spectra, low-temperature photoluminescence spectra (77 K), time-resolved photoluminescence (TRPL) spectra, and density functional theory (DFT) calculation. The thermal quenching mechanism of ANb 2 O 6 :Cr 3+ (A = Zn/Mg) is revealed from the aspects of thermal cross and thermal ionization. Benefiting from the excellent performance of ANb 2 O 6 :Cr 3+ (A = Zn / Mg) NIR phosphors, the combination of 520 nm LED chips, and as-prepared phosphors demonstrate the dramatic potential applications in night vision, non-destructive testing, biological tissue imaging, and spectral analysis.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 31
·期 3
·2005092
·
IF 16.836
Yang Yang,Jinfei Xiao,Jinyan Cai,Gongming Wang,Wencheng Du,Yufei Zhang,Xihong Lu,Cheng Chao Li
Environment-friendly and low-cost aqueous zinc-ion batteries (ZIBs) have received considerable attention for large-scale energy storage. However, the low coulombic efficiency and potential safety hazards of Zn-metal anodes severely hinder their practical implementations. Herein, for the first time, mixed-valence Cu 2− x Se is proposed as a new intercalation anode to construct Zn-metal-free rocking-chair ZIBs with a long lifespan. It is found that the introduction of low-valence Cu not only modify active sites for Zn 2+ ion storage, but also optimizes the electronic interaction between the active sites and the intercalated Zn 2+ ion, leading to a favorable intercalation formation energy (−0.68 eV) and reduced diffusion barrier, as demonstrated by first-principles calculation. Ex situ X-ray diffraction, ex situ transmission electron microscopy and galvanostatic intermittent titration technique measurements reveal the reversible insertion/extraction of Zn 2+ in Cu 2− x Se via an intercalation reaction mechanism. Owing to the rigid host structure and facile Zn 2+ diffusion kinetics, the Cu 2− x Se nanorod anode shows an enhanced coulombic efficiency (above 99.5%), outstanding rate capability and excellent cycling stability. The as-fabricated Zn x MnO 2 ||Cu 2− x Se Zn-ion full battery exhibits an impressive electrochemical performance, particularly an ultralong cycle life of over 20 000 cycles at 2 A g −1 . This study is expected to provide new opportunities for developing high-performance rechargeable aqueous ZIBs.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Chaorong Chen,Hongyan Zeng,Moyu Yi,Gaofei Xiao,Sheng Xu,Shigen Shen,Bo Feng
The photocatalytic performance of Ag 3 PO 4 is severely restricted by the photocorrosion and high charge carrier recombination rate. In order to overcome these defects, a novel Ag 3 PO 4 /calcined Zn-Al layered double hydroxides (APMO) heterostructure photocatalyst was fabricated via in-situ growth of Ag 3 PO 4 particles on the surface of calcined Zn-Al layered double hydroxides (MMO). The crystal structures, morphologies, optical and photoelectrochemical properties of the as-synthesized samples were characterized using various techniques, and its photocatalytic activity for tetracycline (TC) degradation was evaluated under simulated solar light irradiation. Obviously, all the APMO composites demonstrated much higher photocatalytic performances for TC degradation than pure Ag 3 PO 4 . Especially, the APMO70 showed the highest photocatalytic activity, which was almost about 49.3 times as high as that of pure Ag 3 PO 4 , and the degradation efficiency was still above 89% after 5 cycles. The improved photocatalytic performance and stability of APMO were ascribed to the efficient charge transfer and strong interfacial contact between Ag 3 PO 4 and MMO. The possible photocatalytic mechanisms involving the charge transfer pathway and reactive species generation during the process of TC degradation were also discussed. Finally, the aquatic toxicity of TC was assessed using Chlorella vulgaris ( C. vulgaris ) as an ecological indicator, and the result suggested that the as-prepared APMO composite can effectively diminish the aquatic toxicity of TC.
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Haixin Xia,Yaohong Zhang,Qian Chen,Renrong Liu,Hai Wang
Two functionalized biochar composites (ZF@CBC and SZF@CBC) were fabricated and applied for capturing Pb(II) and Cd(II) from wastewater. SZF@CBC were achieved by loading Zn/Fe nanoparticles (NPs) and coating starch onto corn cobs biochar (CBC) surface, while ZF@CBC was realized by loading Zn/Fe NPs onto CBC surface. The characterization analysis (SEM-EDS, XRD and FTIR) revealed that Zn/Fe NPs and starch were successfully introduced onto CBC surface. The adsorption data of Pb(II) and Cd(II) by ZF@CBC and SZF@CBC conformed to the model of pseudo second order kinetic and Langmuir isothermal and the capture Pb(II) and Cd(II) was a chemisorption process. The maximum sorption capacities of SZF@CBC for Pb(II) and Cd(II) reached 199.98 mg/g and 183.93 mg/g, which were 3.37 and 3.84 times high as that of CBC, respectively. Due to the presence of plentiful exposed adsorption sites (–OH, –COOH, Zn-O and Fe-O) on SZF@CBC surface, which endowed it to accelerate Pb(II) and Cd(II) adsorption. In addition, complexation, electrostatic attraction, ion exchange and physical adsorption took part in the adsorption process. Besides, SZF@CBC still exhibited very good removal capacity for Pb(II) and Cd(II) even in the coexistence of multiple interfering ions and maintained stable adsorption capacity after five consecutive cycles. Therefore, SZF@CBC could be used as an excellent adsorbent for decontaminating Pb(II) and Cd(II) from wastewater with multiple pollutants, and also could be used in resource utilization of biomass waste, which possessed potential applications prospects.
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ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Xiaoshuo Zhang,Rui Dai,Faqiong Zhao,Baizhao Zeng
Background Epithelial cell adhesion molecules (EpCAM) protein is one of the most frequently and intensely studied tumor-associated antigens because of its overexpression in most cancer cells. Thus, it is regarded as a tumor biomarker associated with a wide variety of carcinomas and reflects the existence and growth of tumors in the human body. It is highly required to detect low concentrations of EpCAM in early stage for ensuring human health. Results In this study, a novel sandwich electrochemiluminescence (ECL) aptasensor was developed for EpCAM detection. Wherein oxalate-based Zn-MOF supported tris(2,2′-bipyridyl)ruthenium (II) (Ru(bpy) 3 2+ @Zn-MOF) was used as luminophore and gold nanoparticle modified o-phenylenediamine (PoPD@Au NPs) as quencher. The 3D Ru(bpy) 3 2+ @Zn-MOF generated self-enhanced ECL without additional co-reactants. Furthermore, it remained stable and had short electron transfer distance, ensuring high and stable ECL signal. The ECL signal could be effectively quenched by PoPD@Au NPs through resonance energy transfer (RET) and electron transfer (ET), due to its absorption spectrum overlapping with the ECL emission spectrum of Ru(bpy) 3 2+ @Zn-MOF. In the presence of EpCAM, the aptamer acted as a linker between the luminophore and quencher, forming a sandwich structure that had reduced ECL intensity. Under optimal conditions, EpCAM could be sensitively detected over the range of 1 pg mL -1 -100 ng mL -1 , with a detection limit of 0.34 pg mL -1 . Significance This work developed a ECL aptasensor with self-enhanced Ru(bpy) 3 2+ @Zn-MOF luminophore for EpCAM detection. The ECL system was simple, but ultrasensitive for EpCAM monitoring, thanks to the ECL-RET and ET between Ru(bpy) 3 2+ @Zn-MOF and PoPD@Au NPs. It also could be applied to detect other biomolecules by replacing the aptamer, offering significant potential in disease diagnosis.
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PubMed
高影响因子
JOURNAL OF POLYMER ENGINEERING
·
2022
·Vol. 42
·期 6
·507-519
·
IF 1.624
Xiaofei Yan,Zhikui Zhao,Jie Fang,Jiawei Li,Dongming Qi
A novel synergy flame retardant system of poly(ethylene terephthalate) (PET)/organic-Zn(H 2 PO 2 ) 2 /lithium containing polyhedral oligoheptyl silse-squioxane (Li-Ph-POSS) composites was prepared by the melt-blending method to improve the flame retardancy of PET. The synergistic effect of organic-Zn(H 2 PO 2 ) 2 and Li-Ph-POSS on the flame retardancy, thermal, and mechanical properties of the PET composites was investigated by the limiting oxygen index, vertical burning test, cone calorimeter, thermogravimetric analysis, differential scanning calorimeter, tensile tester, and dynamic mechanical analysis, respectively. The results show that the synergistic flame retardant effect between organic-Zn(H 2 PO 2 ) 2 and Li-Ph-POSS improves both the flame retardancy and the crystallization of PET. Moreover, the Li-Ph-POSS has a positive effect on the mechanical property of PET. This work provides a promising strategy for mitigating the fire hazard of PET using this synergy flame retardant system.
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EcoMat
·
2024
·
IF 10.7
Junming Shi,Guoyang Gao,Can Jin,Hongqing Wu,Weizhen Wang,Yulong An,Zhen Zhou,Zhanhua Huang,Wenshuai Chen
Value-added conversion of lignocellulose is a sustainable approach. Photo-refining biomass is in line with current environmental protection strategies. However, photo-reforming biomass suffers from poor catalyst stability and low conversion efficiency. Here, we designed fructose as a lignocellulosic model. The heterogeneous structure of Prussian blue coating was constructed with a special covalent bond structure of Co CN Zn. This structure has a catalytic conversion mechanism that can accelerate electron transfer. Fructose was simultaneously converted to value-added platform compounds (5-HMF and formic acid) and gaseous fuels (CO, CH 4 ) with a conversion rate of up to 92.5%, which is more than 1.7 times than that of catalysts without adding Prussian blue. Hydrogen transfer and carbon transfer on the carbon atoms of fructose facilitates the production and accelerates the spillover of CO from formic acid. This work provides new ideas for the development of Prussian blue catalysts and the conversion of pentose.
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