FUEL
·
2022
·
IF 8.035
Yi-Ming Gu,Ya-Hui Wang,Sheng-Sheng Zhao,Hong-Jun Fan,Xiao-Wei Liu,Zhiping Lai,Shu-Dong Wang
Carbon capture from flue gases is one of the crucial routines for reducing current CO 2 emissions and mitigating the greenhouse effect. Metal-organic frameworks (MOFs) have received a lot of interest as efficient solid adsorbents for CO 2 /N 2 separation in flue gas treatment. However, many MOF materials are susceptible to the presence of water vapor, which has a significant impact on their adsorption efficacy and moisture stability. Here in this work, we reported two pillar-layered Zn-MOFs with N -donors, i.e., Zn 2 (TRZ) 2 (Fuma) and Zn 2 (TRZ) 2 (BDC), which demonstrated high CO 2 uptakes (3.92 and 1.52 mmol/g) and CO 2 /N 2 (132 and 20.5) adsorption selectivities at 298 K and 101 kPa, among the best comprehensive results reported by far. After seven days of exposure to a 100 % RH environment, it was found that, the Zn-N pillar contributes to the robust structure of MOFs . Furthermore, in-depth theoretical calculations indicated the guest-framework interactions, and dynamic sorption tests confirmed high working capacities (2.78 and 1.14 mmol/g), sufficient water stability and remarkable cycling performance of the studied MOFs under humid ambient conditions. We believe this work provides a routine to prepare robust and promising candidates to address the challenge in carbon capture under humid conditions.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Lei Liu,Mingshuo Zhen,Liyong Wang,Bin Li,Chengfu Deng,Zhixing Zhang,Xiangqian Fan,Ning Li,Huiqi Wang,Chen Li,Shengliang Hu
Zn-ion electrochromic energy storage devices (ZEESDs) incorporate electrochromism and energy storage into one platform that can visually indicate the working status through a real-time color change, attracting considerable attention in energy-saving buildings and intelligent electronics. However, typical ZEESDs generally consist of Zn metal electrodes and normal liquid electrolytes, resulting in the dendrite issues and restricted operating temperatures as well as inferior cycle stability. Herein, an all-solid-state dendrite-free ZEESD was constructed based on polyaniline (PANI) positive electrode, monoclinic WO 3 ( m -WO 3 ) negative electrode and Zn 2+ -based gel electrolyte. Benefiting from the complementary synergistic effect of electrodes and electrolytes, the resultant ZEESD avoids heavy Zn metals, addresses the dendrite formation problem, and exhibits remarkable electrochromic and electrochemical performances. The prototype ZEESD possesses high energy/power density (97 Wh kg −1 /976.2 W kg −1 and 28.6 μWh cm −2 /0.27 mW cm −2 ), large optical modulation (∼52.4%@630 nm), high coloration efficiency (96.8 cm 2 C −1 at 630 nm), along with outstanding cycling stability (∼94.4% capacity retention even after 6000 cycles). Impressively, the quasi-solid-state electrolyte maintained outstanding electrochemical activity enabling the ZEESD to cycle efficiently even under hash temperatures, presenting enormous potential for intelligent electronics in all-climate (−30 °C to 60 °C) conditions. This work provides a novel strategy to construct next-generation dendrite-free Zn-ion electrochromic energy storage devices for innovative consumer electronics even in harsh environments.
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高影响因子
Nanoscale
·
2021
·Vol. 13
·期 22
·10127-10132
·
IF 7.79
Wenjun He,Hui Liu,Jianing Cheng,Jing Mao,Cong Chen,Qiuyan Hao,Jianling Zhao,Caichi Liu,Ying Li,Limin Liang
Designing non-noble-metal electrocatalysts with excellent performance and economic benefits toward the hydrogen evolution reaction (HER) is extremely crucial for future energy development. In particular, the rational cationic-doped strategy can effectively tailor the electronic structure of the catalysts and improve the free energy of the adsorbed intermediate, thus enhancing HER performance. Herein we reported Zn-doped Ni3S2 nanosheet arrays supported on Ni foam (Zn-Ni3S2/NF) that were synthesized by a two-step hydrothermal process for improving HER catalysis under alkaline conditions. Remarkably, the obtained Zn-Ni3S2/NF displays excellent HER catalytic performance with an overpotential of 78 mV to reach a current density of 10 mA cm−2 and dramatic long-term stability for 18 h in 1 M KOH. In addition, the results based on the density functional theory calculations reveal that Zn dopants can modulate the electronic structure of Ni3S2 and optimize the hydrogen adsorption free energy (ΔGH*). Thus cationic-doping engineering provides an efficient method to enhance the intrinsic activities of transition-metal sulfides, which may contribute to the development of nonprecious electrocatalysts for HER.
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高影响因子
Journal of Energy Storage
·
2019
·
IF 3.517
Jianhua Yu,Zhenxing Cui,Xu Li,Di Chen,Jiawen Ji,Qian Zhang,Jing Sui,Liyan Yu,Lifeng Dong
Recently, rational design and synthesis of two-dimensional (2D) nanoflake based architectures have attracted great attention in energy storage systems due to their unique properties, such as high specific surface area, superior electrical and thermal conductivity. Zeolitic imidazolate frameworks (ZIFs) with 2D structure can be synthesized by a facile aqueous method and be used to obtain 2D metallic/binary metallic oxides. In this paper, graphene oxide and Zn 2+ were added in the synthesis of Co-ZIF, and its derived oxide (ZnCoO-G) exhibits 2D nanosheet structure with well dispersed Co 3 O 4 and ZnO nanoparticles after heat treatment. Compared with the derivatives without graphene oxide (ZnCoO) and Zn 2+ (CoO-G), ZnCoO-G demonstrates the highest specific capacitance of 711.6 F g −1 at 1 A g −1 with a capacitance retention of 63.6% at 5 A g −1 after 1000 cycles. Also, an asymmetric supercapacitor (ASC) with ZnCoO-G and commercial active carbon as positive and negative electrodes has a maximum energy density of 18.7 W h kg −1 at a power density of 800 W kg −1 .
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高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
De Zhao,Zhihua Wu,Wei Zhang,Jian Yu,He Li,Wen Di,Yourong Duan
To date, ZnO array-based microfluidic fluorescence assays have been widely investigated and have exhibited excellent performance in the detection of cancer biomarkers. However, the requirements of highly sensitive detection necessitate further improvement of current Zn-based fluorescence detection devices. Here, a rhombus-like Zn(OH)F array-based microfluidic fluorescence detection device is proposed. Construction of Zn(OH)F arrays on the inner wall of a microchannel is carried out via a microfluidic chemical method. A substrate-induced growth strategy for Zn(OH)F arrays is proposed, and various micro/nanostructured Zn(OH)F arrays are successfully obtained. Zn(OH)F nanorod arrays with a high aspect ratio can be constructed on the columnar ZnO nanorod arrays, and the results indicate that the fluorescence enhancement factor (EF) of the Zn(OH)F arrays toward Cy3 is approximately 4-fold that of the ZnO nanorod arrays, which can be attributed to the higher excitation light absorption and evanescent electric field. In human epididymis-specific protein 4 (HE4) detection, the limit of detection (LOD) reaches 9.3 fM, and the dynamic linear range is 10 fM to 100 pM. It has been demonstrated that Zn(OH)F nanorod array-based microfluidic devices are excellent fluorescence assay platforms that also provide a new design and construction strategy for fluorescence enhancement substrates for the detection of biomarkers.
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高影响因子
Catalysis Science & Technology
·
2020
·Vol. 10
·期 13
·4412-4423
·
IF 5.721
Qiang Liu,Zhenbo Zhao,Masahiko Arai,Chao Zhang,Ke Liu,Ruhui Shi,Peixuan Wu,Zhuangqing Wang,Weiwei Lin,Haiyang Cheng,Fengyu Zhao
The transformation of γ-valerolactone (GVL) into 1,4-pentanediol (1,4-PDO) and 2-methyltetra-hydrofuran (2-MTHF) in the presence of H2, one of the useful biomass conversion and utilization processes, was investigated with monometallic Cu/Al2O3 and bimetallic ZnCu/Al2O3 catalysts. A 10 wt% Cu-loaded monometallic catalyst produced 1,4-PDO and 2-MTHF in comparable quantities at a medium conversion (∼50%). When Zn was added in a range of Zn/Cu molar ratios of up to 2, in contrast, the catalysts yielded 1,4-PDO in a high selectivity of about 97% at low and high conversion levels. In addition, the 1,4-PDO selectivity over the ZnCu/Al2O3 catalysts remained almost unchanged during recycled runs. That is, the addition of Zn to Cu/Al2O3 switched the product selectivity and improved the catalyst stability and reusability. Furthermore, the physicochemical properties of the catalysts were characterized by several methods including XRD, TEM, TPR, XPS, FTIR of adsorbed pyridine, and so on. On the basis of those results, the relationships between the catalytic performance (activity, selectivity, and reusability) and the catalyst structural features were discussed.
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高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Zaizhi Yang,Pengbo Wang,Zhentao Wang,Juan Liu,Lei Zhang,Sujuan Zhong,Bin Tang,Dong Xu
In this study, the challenge of high-temperature and long-time sintering of (Zn, Ta) co-doped TiO 2 ceramics is solved successfully using flash sintering technology. Joule heating and a high heating rate make the sample compact rapidly at low temperatures (1050 °C in 24 min). When the electric field was equal to 200 V/cm, high permittivity (ε' ∼ 1.32 × 10 4 ), low dielectric loss tangent (tan δ ∼ 0.27), and nonlinear coefficient ( α ∼ 5.8) values were obtained. Flash sintered samples have more free electrons , resulting in a high dielectric constant . Further, the higher the electric field, the smaller the grain resistance of the sample; this condition is conducive to reducing dielectric loss . giant dielectric performance is explained by the combined action of the electron-pinned defect dipole theory and the internal barrier layer capacitance effect. Therefore, this study provides a promising prospect for the green preparation of co-doped TiO 2 giant dielectric ceramics .
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高影响因子
Materials Today Energy
·
2021
·
IF 7.311
H. Chen,S. Cai,Y. Wu,W. Wang,M. Xu,S.-J. Bao
Rechargeable aqueous zinc-manganese oxide (Zn/MnO 2 ) batteries using Mn 2+ as the electrolyte additive have recently attracted remarkable attention owing to their largely improved cycling stability. Herein, we find that the Zn/MnO 2 batteries with Mn 2+ additive still exhibit rapid capacity fading when cycling between 0.8 and 1.6 V vs. Zn/Zn 2+ , its improved performance is only observed when charged to a higher slope region (>1.6 V), which suggests that the improved performance of Mn 2+ added Zn/MnO 2 is not caused by suppressing the dissolution of MnO 2 cathode. Inspired by this discovery, successive electrochemcial conversion reactions are scrutinized and proved for evaluating the performance of the Zn/MnO 2 batteries after using Mn 2+ as the electrolyte additive. By adding a certain amount of Mn 2+ into the electrolyte, the battery can improve the capacity and cycling abilitily through converted electrodepostion of Mn 2+ . Specifically, the zinc sulfate hydroxide hydrate (Zn 4 SO 4 ·(OH) 6 ·4H 2 O) large-flake can initiate the generation of zinc vernadite nanosheets (Zn x MnO(OH) y ) during the charge process (around 1.5 V vs. Zn/Zn 2+ ), and then the zinc vernadite nanosheets can reversibly re-back to Zn 4 SO 4 ·(OH) 6 ·4H 2 O during the discharge process. Importantly, part of zinc vernadite nanosheets irreversibly transform into tunnel-like MnO 2 nanocrystalline material when charging higher than 1.6 V vs. Zn/Zn 2+ , which can improve the specific capacity of Zn/MnO 2 batteries in subsequent cycles and then make the Zn/MnO 2 batteries exhibit excellent cycles stability. Finally, through a special zinc/carbon nanotube (Zn/CNT) battery, this successive electrochemcial conversion reactions are further verified.
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高影响因子
JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2024
·Vol. 57
·期 46
·465502
·
IF 3.1
Yi-Han Song,Guo-Duo Yang,Tong Wang,Zhuo Wang,Su-Min Zhou,Xing-Long Wu,Hai-Zhu Sun
The integration of an artificial protective coating into the Zn metal anode is considered as a highly efficient approach to minimize growth of Zn dendrites. The present study involves the design and synthesis of NiCo nanomaterials featuring a three-dimensional (3D) open structure and an abundance of active groups on their surface. Subsequently, NiCo nanomaterials are applied as a protective coating onto Zn foil to safeguard the Zn anode. The NiCo protective coating provides a rich zincophilic site, thus enhancing the stability of the electrode and effectively inhibiting Zn dendrite growth. Hence, the NiCo@Zn\\|NiCo@Zn symmetric cell with a lifespan up to 950 h at a current density of 2 mA cm−2. When paired with NH4V4O10, the full battery exhibits satisfied ultra-long cycle stability, maintaining good capacity retention after 3000 cycles at 10 A g−1. This work provides a new idea for the practical application of zinc ion batteries.
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高影响因子
JOURNAL OF THERMAL SPRAY TECHNOLOGY
·
2024
·Vol. 33
·期 5
·1694-1708
·
IF 3.2
Zhang Lu-lu,Ma Wen-chao,Liu Yan-cai,Cao Hong-wei,An Ya-qiong,Huang Hai-fan,Zhang Hao-lin,Qiao Jiang-hao,Li Xiao-wei,Liu Hong-tao
In this paper, as-received Zn powder and as-prepared Zn@(ZnWO 4 /ZnO) core–shell powder were used as feedstocks for plasma spraying to prepare Zn-based composite coatings and nano-ZnO was co-deposited by chemical vapor deposition induced by plasma spraying. The composition and morphology were controllable within certain range by plasma spraying power. The photocatalytic activities of the coatings were analyzed by the degradation efficiency of methyl orange (MO) solution. It was found the photocatalytic activity can be improved with ZnWO 4 decoration. The Zn/ZnO/ZnWO 4 coating which presented tremella-like surface morphology was testified to have the best photocatalytic activity under UV light irradiation among all coatings. On the other hand, the chemical surface modification with 1H,1H,1H,2H-perfluorodecyltriethoxysilane (FAS-17) was implemented to produce superhydrophobic coatings. Among all modified coatings, the ZnWO 4 -containing coating with tremella-like surface structure presented the best superhydrophobicity. By the cyclic wetting and tape adhesion experiments, the tremella-like structure was proved to make a great improvement on the robustness of the Zn-based superhydrophobic coatings. The superhydrophobic and photocatalytic properties provide the possibility for the application of the coating in the fields of antifouling, antibacterial, and photocatalytic degradation of organics. Graphical Abstract
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高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Peiyan Liu,Meiri Wang,Jing Li,Hongtao Cui,Tao Zeng,Shubin Yang,Huan Wang,Yuanyuan Liu
Rechargeable aqueous Zn//MnO 2 batteries are the promising alternatives to lithium-ion batteries owing to their high safety, high energy density, low cost, and environmental friendliness. However, the unstable MnO 2 cathode causes poor practical energy density and serious capacity fading. To overcome this issue, herein, a unique 2D nanosheets self-supported 3D δ -MnO 2 microflower hierarchical architecture is rationally designed and synthesized by taking advantage of its microwave-absorbing characteristics. The 2D nanosheets with high surface area could expose numerous active sites for ions/electrons transfer. Also, the 3D assembled structure acting as building blocks would ensure structural stability for long-life cycles. Benefiting from these synergistic merits, the δ -MnO 2 microflowers deliver a high capacity of 287.6 mA h g −1 at 0.5 C, an excellent rate capability of 202.7 mA h g −1 at 5 C, and a superior cycling retention of 76.5% over 1000 cycles at 10 C. Furthermore, a storage mechanism of H + /Zn 2+ co-insertion accompanied by the deposition of zinc sulfate hydroxide hydrate is clarified by the aid of ex-situ XRD and SEM technologies. This work provides a new pathway for developing high capacity and long lifespan ZIBs.
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高影响因子
Nano-Micro Letters
·
2020
·Vol. 12
·期 1
·1-12
·
IF 12.264
Chen Zhe,Wang Panpan,Ji Zhenyuan,Wang Hua,Liu Jie,Wang Jiaqi,Hu Mengmeng,Huang Yan
A 2.4 V high-voltage flexible aqueous ZIB was fabricated, and superiors performances were achieved: extremely flat charging/discharging voltage plateaus (1.9/1.8 V), the smallest plateau voltage gap of 0.1 V, high energy density of 120 Wh kg −1 , high power density of 3700 W kg −1 , and excellent rate capability of 25 C.
The battery posed application potential in wearable electronics with extreme safety against tough destructions including hammering, sewing, punching, and soaking.
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高影响因子
危险品化学品经营许可证（带存储）