INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2021
·
IF 3.764
Hongyu Niu,Yuan Cheng,Chuang Li,Shaojie Li,Jingjie Luo,Changhai Liang
Rational design of promising Cu catalyst requires better understanding of the Cu–support perimeter for reactions such as hydrogenation rearrangement of furfural─a pivotal and alternative transformation to produce cyclopentanol. Herein, a series of Cu catalysts with constructed Cu-M-Ox interfaces (M = Zn or Al) have been synthesized. In freshly reduced Cu/ZnO-Alx samples, aluminum species was enriched surrounding Cu. The Cu-Al-Ox contacting interface was formed, and the CuAl2O4 spinal structure was detected as a combining consequence only if Zn and Al species coexisted. The specific metal–support synergistic interaction and Cu-Al-Ox contacting interface simultaneously aroused the enhanced redox property and large number of surface acid sites, facilitating the adsorption/activation of hydrogen and reactants. During the reaction, Al2O3 retreating from the Cu-Al-Ox interface caused the replacement of Cu-Al-Ox by new Cu-Zn-Ox interface, which was directly correlated with the irreversibly changed chemical structure and decreased cyclopentanol yield, although the furfural conversion was well sustained. In this work, we confirmed that supported copper catalysts were competent for the activation and conversion of furfural, with the turnover frequency reaching 28.1 h–1 by the Cu/ZnO-Al3 sample at temperatures as low as 90 °C. The further transformation of cyclopentanone to cyclopentanol was largely depending on the maintenance of a steady Cu-Al-Ox contacting interface.
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DOI
高影响因子
Nano Research
·
2023
·Vol. 17
·期 5
·3684-3692
·
IF 9.9
Wu Wenbo,Zhu Jiaye,Tong Yun,Xiang Shuangfei,Chen Pengzuo
Regulating the electronic structure of Bi-based materials by alloying engineering is promising to promote the electrocatalytic activity, but it remains some challenges to be solved. In this study, a facile electrochemical co-deposition strategy is developed to synthesize the bimetallic Bi 9 Cu 1 alloy nanosheet on carbon cloth (Bi 9 Cu 1 /CC), which represents a novel self-supporting electrode for the electrocatalytic carbon dioxide (CO 2 ) reduction reaction (CO 2 RR). The Bi 9 Cu 1 /CC catalyst has achieved a remarkable catalytic performance with high Faradaic efficiencies (FE) of over 90% for formate at wide potentials from −0.7 to −1.2 V vs. reversible hydrogen electrode (RHE). Moreover, the reversible Zn-CO 2 battery can be driven by Bi 9 Cu 1 /CC cathode with a largest power density of 1.4 mW·cm −2 , and superior operating stability. The systematic characterizations and electrochemical results confirm that the improved catalytic active sites, the enhanced mass/charge transport and the optimal reaction kinetics of Bi nanosheet are realized for CO 2 RR by Cu alloying. In situ attenuated total reflection infrared (ATR-IR) result confirms the bimetallic Bi-Cu active sites prefer to follow the ⋆OCHO conversion pathway. The density functional theory (DFT) calculations suggest that the Cu alloying contributes to the increased density of states near the Fermi surface of Bi and the optimized adsorption of ⋆OCHO intermediates on the Bi sites, resulting in the excellent catalytic performance.
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高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Hong Li,Qiulan Li,Qiao Shi,Yijie Wang,Xiuwei Liu,Hao Tian,Xinrui Wang,Dezhi Yang,Yaling Yang
Single-atom nanozymes (SAzymes) show distinct advantages in catalytic activity and selectivity owing to their stability and special characteristic of maximum atomic utilization. Inspired by the structure of natural horseradish peroxidase (HRP), we developed a simple method for specific determination of both propyl gallate (PG) and formaldehyde (HCHO) by utilizing the intrinsic peroxidase mimics activity of hemin (hem) loaded Zn–nitrogen–carbon single-atom nanozymes (Zn–N–C@hem SAzymes). Zn–N–C@hem was prepared via a salt-template strategy and self-assembly, where hemin exhibits enhancing peroxidase-like activity can catalyze oxidation of colorless PG to yellow product. Upon introduction of HCHO into Zn–N–C@hem/PG system, complete suppression of PG oxidation was showed, resulting in distinguished decrease in absorbance. The colorimetric sensors of PG and HCHO based on Zn–N–C@hem/PG were developed at their respective linear range of concentration 1.25–200 mg/kg and 5–250 mg/kg. The practicability of the rapid analysis of PG and HCHO in food samples has been verified with reliable results.
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高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 49
·495603
·
IF 3.874
Peiyuan Ji,Jing Wan,Junlin Lu,Dazhi Zhang,Chenguo Hu,Yi Xi
The development of simple preparation and excellent capacity performance electrode materials is the key to energy conversion and storage for supercapacitors. Based on the growth mechanism of crystal, Zn induced NiCo nanosheets and nanoneedles composite structure deposed on Ni foam (ZNC) are successfully attained by a facile one-step method, the growth mechanism of the composite structure is further discussed. Because of its unique composites structure and additional modification of carbon, the carbon modified ZNC (ZNC@C) delivers better energy storage ability (2280 mC cm−2 at 2 mA cm−2) compare to ZNC. An asymmetric supercapacitor (ASC) is assembled by ZNC@C as the positive electrode and carbonized popcorn as the negative electrode. The ASC exhibits good energy storage performance. Zn also positively affects the adsorption energy to enhance the capacitance property based on Density Functional theory calculation. The simple method for the composite structure by tuning the kinetics behaver of the crystal can provide a new strategy in synthesizing the materials, and the material with a unique structure and high performance will have potential applications in the field of energy storage.
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DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2023
·
IF 10.9
Yixuan Wang,Canhui Zhang,Xingkun Wang,Jiarui Duan,Kecheng Tong,Shuixing Dai,Lei Chu,Minghua Huang
With the depletion of fossil fuel resources and the increasing severity of environmental pollution, it has become imperative to seek energy conversion devices with low cost, high efficiency and excellent environmental compatibility. Considering their high theoretical energy density, affordability and environmentally friendly nature, Zn-air batteries (ZABs) are regarded as promising energy storage and conversion devices. The utilization of seawater in ZABs (S-ZABs) holds great potential, given the abundance of seawater reserves, offering economic and social benefits such as reducing electrolyte costs and alleviating competition for freshwater consumption in human activities. However, the application of S-ZABs remains challenging, particularly in constructing high-performance cathode oxygen reduction reaction (ORR) catalysts that are highly resistant to Cl − corrosion in seawater-based electrolytes. In this study, we have engineered an ultrathin carbon-chainmail-shell encapsulated Co 9 Se 8 nanoparticles on N-doped mesoporous carbon (named as NMC-Co 9 Se 8 ) electrocatalysts using the high-temperature selenization strategy. The ultrathin carbon-chainmail-shell on the outside improves electron transfer during the electrocatalysis and suppresses nanoparticles agglomeration. Additionally, it could act as armor for protecting the inner active site from the adsorption of corrosive Cl − . Benefit from this unique structure, the NMC-Co 9 Se 8 catalyst exhibits excellent ORR performance, with an onset potential of 0.904 V and a half-wave potential of 0.860 V in seawater-based electrolytes. The catalyst also affords the lowest Tafel slope (35.5 mV·dec −1 ) and the highest kinetics current density of 9.816 mA·cm −2 at 0.85 V among all investigated samples. Owing to the protective effect of the ultrathin carbon-chainmailshell on the inner active sites, the NMC-Co 9 Se 8 catalyst retains 91.6% of its initial activity after continuous operation for 50000 s, surpassing the commercial Pt/C catalyst (with a current retention rate of 62.8%). More importantly, the S-ZABs based on the NMC-Co 9 Se 8 catalyst deliver a high maximum power density of 172.4 mW·cm −2 and a high specific capacity of 643.9 mAh·g −1 , exceeding those of S-ZABs powered by the commercial Pt/C catalyst (151.2 mW·cm −2 and 548.3 mAh·g −1 ). Furthermore, the S-ZABs driven by the NMC-Co 9 Se 8 catalyst demonstrate a discharge stability for up to 150 h and maintain a stable charge-discharge cycle stability over 200 h, demonstrating the practical application performance of the NMC-Co 9 Se 8 catalyst. In practical applications, the S-ZABs driven by the NMC-Co 9 Se 8 catalyst can illuminate a light-emitting diode (LED) with a driving voltage of 2 V for several hours. This work provides new ideas for developing efficient and durable catalysts with high Cl − corrosion resistance for applications in seawater-based Zn-air batteries and other energy conversion technologies. Download: Download high-res image (142KB) Download: Download full-size image
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高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Yunzhao Liu,Xiaowei Chi,Qi Han,Yuexiu Du,Jiaqi Huang,Yu Liu,Jianhua Yang
Rechargeable Zn-ion batteries (ZIBs) have attracted extensive attention, but their practical application is hindered by the limited cycling life and complicated preparation process of cathode materials . Here, we develop a facile yet scalable chemical precipitation/spray-granulation combined methodology for the fabrication of α-MnO 2 nanofibers/carbon nanotubes hierarchically assembled microspheres (α-MnO 2 /CNT HMs) as the cathode material for aqueous ZIBs . The α-MnO 2 evenly anchoring to the CNTs-based framework shows significantly increased tap density compared with pristine α-MnO 2 , which can effectively enhance the electrochemical stability. Owing to the synergistic merits of highly conductive carbon nanotubes network and α-MnO 2 nanofibers with desirable structure features, within our knowledge, the highest areal energy density of 0.98 Wh cm −2 at 0.2 A g −1 and the record cycling stability with 96% capacity retention over 10000 cycles at 3 A g −1 among the reported cathodes for ZIBs are achieved. Zn 2+ and H + co-insertion reaction mechanism with high reversibility is further revealed. Fast kinetic of the H + insertion/extraction process renders the cell excellent cycling stability. Facile preparation of nanofibrous α-MnO 2 based micro-composite, cost benefit of the source materials, and the superior battery performance provide new approaches for the practical applications of ZIBs.
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高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Lingling Zhang,Yumei Luo,Qingyong Wang,Dan Wei,Haopan Hu,Peixiu Yan,Xu Feng,Shujun Qiu,Fen Xu,Weiping Cao,Lixian Sun,Hailiang Chu
The exploration of transition metal-based electrode materials for asymmetric supercapacitors has garnered considerable interest owing to their potential to achieve high-energy storage and demonstrate outstanding electrochemical performance. In this study, we designed and synthesized Zn-doped NiCo layered double hydroxide (LDH), a hollow supercapacitor electrode material, through a facile ion exchange method at room temperature . Doping Zn ions results in an increased interlayer spacing expanding from 0.815 nm (ZIF-67@NiCo-LDH) to 0.874 nm (ZnNiCo-LDH-7), which facilitates sufficient penetration of the electrolyte and accelerates the charge transfer kinetics. Moreover, by employing the metal-organic framework ZIF-67 as a precursor, ZnNiCo-LDH nanosheets assembled in hollow nanocages exhibit remarkable electrochemical performance due to their large contact area with electrolytes and superior electrical conductivity . The synthesized ZnNiCo-LDH electrode material achieves a high specific capacitance of 1908 F g −1 at 1 A g −1 . When integrated into an asymmetric supercapacitor , in combination with activated carbon (AC), the device delivers an outstanding energy density of 41.5 Wh kg −1 at a power density of 825 W kg −1 . Notably, the assembled device shows exceptional cycling stability, retaining 120 % of its initial specific capacitance even after 5000 cycles at a current density of 5 A g −1 . The extraordinary performance and remarkable stability are mainly due to Zn ion doping-induced local lattice expansion and the hierarchical hollow nanocage structure, which underscores its highly promising potential in supercapacitor applications.
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高影响因子
JOURNAL OF BIOMATERIALS APPLICATIONS
·
2024
·
IF 2.3
Yang Sheng,Danni Qing,Naijun Li,Peng Zhang,Yixin Sun,Rong Zhang
Zn-Ag-In-S (ZAIS) quantum dots (QDs) were synthesized with various Ag-to-In ratios and used as novel photosensitizers for photodynamic therapy (PDT) on cancer cell inhibition and bacterial sterilization, and their structural, optical, and photodynamic properties were investigated. The alloyed QDs displayed a photoluminescence quantum yield of 72% with a long fluorescence lifetime of 5.3 μs when the Ag-to-In ratio was 1:3, suggesting a good opportunity as a dual functional platform for fluorescence imaging and PDT. The ZAIS QDs were then coated with amphiphilic brush copolymer poly(maleic anhydride-alt-1-octadecene) (PMAO) before application. The 1O2 quantum yield of the ZAIS/PMAO was measured to be 8%, which was higher than previously reported CdSe QDs and comparable to some organic photosensitizers. Moreover, the ZAIS QDs showed excellent stability in aqueous and biological media, unlike organic photosensitizers that tend to degrade over time. The in vitro PDT against human melanoma cell line (A2058) and Staphylococcus aureus shows about 30% inhibition rate upon 20 min light irradiation. Cell staining images clearly demonstrated that co-treatment with ZAIS QDs and light irradiation effectively killed A2058 cells, demonstrating the potential of ZAIS QDs as novel and versatile photosensitizers for PDT in cancer and bacterial treatment, and provides useful information for future designing of QD-based photosensitizers.
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jianping Yan,Minghui Ye,Yufei Zhang,Yongchao Tang,Cheng Chao Li
The irrepressible demand for safe and renewable energy storage systems is spurring the rise of aqueous zinc-ion batteries (ZIBs). Nonetheless, the severe dendrites growth and side reactions on Zn metal anode hinder the application of aqueous ZIBs. Herein, a versatile zirconium phosphate (ZrP)-based artificial solid electrolyte interface (ASEI) on Zn anode (Zn@ZrP) is constructed by spraying method to solve this dilemma. The unique layer structure and ion exchange properties of ZrP enable the formation of zinc ion channels in the interlayers of ZrP, which can redistribute the Zn 2+ ion flux and promote the transport of Zn 2+ ion at the interface of Zn anode. Moreover, the ZrP-based ASEI shows the merits of improved Zn 2+ desolvation capability, high ionic conductivity and thus greatly facilitates the Zn deposition kinetics. The results reveal that the ZrP-based ASEI improves the Coulombic efficiency to 99.6% for 2000 cycles and enables the Zn@ZrP symmetric cell to realize a dendrite-free plating/stripping with a low voltage hysteresis (45 mV) and a long lifespan (780 h) at 0.5 mA cm −2 . Moreover, the feasibility of Zn@ZrP is evaluated by coupling with common MnO 2 and V 2 O 5 as full batteries. Notably, the Zn@ZnP//V 2 O 5 cell exhibits outstanding cycling stability (a capacity retention of 72.8% after 5000 cycles).
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高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Hongrun Jin,Simin Dai,Zehao Zhu,Yongxin Luo,Bei Qi,Kaisi Liu,Tao Wu,Xinyan Zhuang,Jun Zhou,Liang Huang
The commercialization of aqueous zinc ion batteries (ZIBs) is seriously hindered by the inferior stability of the Zn anode, which principally originates from water-induced side reactions and dendrite issues. Interfacial engineering has been considered as a cost-effective way to tackle these bottlenecks. However, most artificial solid electrolyte interphase (SEI) suffers from sluggish Zn2+ migration and thus compromises the kinetic merits of aqueous ZIBs especially at ultrahigh rates. Herein, we present a unique H2O molecules-rich zinc phytate (PAZn) interphase for the optimization of Zn anodes. The critical role of crystal water on the Zn2+ transport process is demonstrated. Benefiting from the shielding effect, the Zn2+ diffusion coefficient increases by orders of magnitude in the presence of crystal water. Accordingly, the Zn anode modified by PAZn interphase delivers an impressive lifespan of 1200 h and dramatically reduced voltage hysteresis even under an ultrahigh current density of 10 mA cm–2, and it remains stable even at a higher Zn utilization exceeding 50%. Moreover, the V2O5//PAZn@Zn full cell exhibits remarkable performance with a high capacity retention of 89.3% after 600 cycles. This work provides an effective strategy for rationally designing highly Zn2+-conductive artificial SEI for durable Zn anodes and high-performance commercially available ZIBs.
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高影响因子
Energy & Environmental Materials
·
2020
·Vol. 4
·期 4
·603-610
·
IF 0
Wanwei Jiang,Haiting Shi,Xijun Xu,Jiadong Shen,Zhiwei Xu,Renzong Hu
Aqueous Zn-ion battery has emerged as one of the most prospective energy storage devices due to its low cost, high safety, and eco-friendliness. However, Zn-ion batteries are bottlenecked by significant capacity fading during long-term cycling and poor performance at high current rates. Here, we report an available cooperation of multivariate manganese oxides@carbon hybrids (MnO 2 /MnO@C and MnO 2 /Mn 3 O 4 @C) via a plasma-assisted design as an attractive Zn-ion cathode. Among them, the MnO 2 /MnO@C cathode exhibits a reversible specific capacity of 165 mAh g −1 over 200 cycles at a high rate of 0.5 A g −1 , and possesses great rate performance with high capacities of 110 and 100 mAh g −1 at a high rate of 0.8 and 1 A g −1 , respectively. The good cathode performance significantly results from the facile charge transfer and ions (Zn 2+ and H + ) insertion in the manganese oxides/carbon hybrids featuring phase stability behavior in the available cooperation of multivalence and carbon conductive substrates. This work will promote the Zn-manganese dioxide system for the design of low-cost and high-performance aqueous rechargeable Zn-ion batteries.
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DOI
Frontiers in Chemistry
·
2022
·
IF 5.545
Nan Hu,Hongyu Qin,Xiangyou Chen,Yanping Huang,Jing Xu,Huibing He
Aqueous zinc-ion batteries (AZIBs) have attracted extensive attention because of their eco-friendliness, intrinsic safety, and high theoretical capacity. Nevertheless, the long-standing Zn anode issues such as dendrite growth, hydrogen evolution, and passivation greatly restrict the further development of AZIBs. Herein, a metal–chelate interphase with high Zn affinity is constructed on the Zn metal surface (TA@Zn) via dipping metallic Zn into a tannic acid (TA) solution to address the aforementioned problems. Benefiting from the abundant hydrophilic and zincophilic phenolic hydroxyl groups of TA molecules, the metal–chelate interphase shows strong attraction for Zn2+ ions, guiding uniform zinc deposition as well as decreasing Zn2+ migration barrier. Therefore, the TA@Zn anode displays an extended lifespan of 850 h at 1 mA cm−2, 1 mAh cm−2 in the Zn|Zn symmetrical cell, and a high Coulombic efficiency of 96.8% in the Zn|Ti asymmetric cell. Furthermore, the Zn|V2O5 full cell using TA@Zn anode delivers an extremely high capacity retention of 95.9% after 750 cycles at 2 A g−1. This simple and effective strategy broadens the interfacial modification scope on Zn metal anodes for advanced rechargeable Zn metal batteries.
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高影响因子
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