CHEMICAL PHYSICS LETTERS
·
2021
·
IF 2.328
Qianqian Shang,Xin Tan,Mingcan Chen,Songyue Han,Tao Yu
High-efficient SERS substrates containing dense hot spots were fabricated by assembling 3D Ag nanoflowers (AgNFs)@Au-FTO substrate by using citrate ions as the shape-guiding agent. The vertical growth of 3D AgNFs could be attributed to the synergistic effects of the concentration gradient layer of Ag + and the density gradient of the charge carrier. Combined with the simulation result of FDTD method, the enhanced SERS sensitivity and repeatability of AgNFs@Au-FTO could be attributed to the enlarged specific surface area, and the improved density of hot spots contributed by the overlap between the vertically stacked AgNSs with a high population of sharp edges.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2021
·
IF 9.594
Chao Zhang,Huifeng Dong,Binling Chen,Tianxu Jin,Jun Nie,Guiping Ma
The development of bifunctional activity and long durability of ORR/OER catalyst is vital for realizing the practical application of Zn–air batteries (ZAB). Herein, 3D-structured bifunctional catalysts , CoFe nanoalloy decorated carbon nanotubes (CNT) anchoring with 2D MXene (Fe/Co-CNT@MXene-T), were prepared and fabricated as the cathode for both aqueous and flexible ZAB. Taking advantages of active sites of CoFe nanoparticles , robust sheath and fast charge transfer provided by CNT and MXene, our optimal catalyst Fe/Co-CNT@MXene-8 exhibited remarkable electroactivities of ORR and OER comparable with the benchmark Platinum carbon (Pt/C) and Ruthenium dioxide (RuO 2 ), respectively. The as-assembled aqueous ZAB with Fe/Co-CNT@MXene-8 as cathode exhibited a high specific capacity of 759 mA h g −1 at a current density of 10 mA cm −2 , and a stable voltage platform in the quick discharge–charge test under a 375h long-lasting operation, superior to those assembled with benchmark commercial catalyst and other reported catalysts. Furthermore, the as-assembled flexible ZAB with Fe/Co-CNT@MXene-8 as cathode also presented excellent durability cycling and showed promising perspectives as future power sources for wearable application. Such high performance was also verified by X-ray absorption near-edge structure (XANES) and supported by density functional theory (DFT) calculation. This work provides a novel view to design highly effective and long-lasting rechargeable ZABs.
研究领域:
材料科学
·
电化学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
XianWei Wang,Yue Zhai,Yuanhui Chen,Wei Zhang,Pei Liang,Qiangqiang Zhu,Hong Zhang,Juan Kang,Le Wang
s The development of a highly sensitive and reliable surface-enhanced Raman scattering (SERS) substrate is crucial for overcoming the limitations in its practical applications. Herein, a novel 3D waffle-like SERS substrate with high activity is constructed for detecting trace amounts of myricetin in complex analytes extracted from green tea. The substrate is achieved through a layered ternary film structure, where ordered poly (methyl methacrylate) opal photonic crystals (PMMA OPCs) serving as a 3D hot spots template and enhancing the performance of CsPbBr 3 film that facilitates efficient charge transport, and an Au film covered over the CsPbBr 3 film modulating the vibronic coupling and providing plasmonic hot spots. The PMMA-CsPbBr 3 -Au substrate exhibits a low detection limit of 10 −10 M with an 8.9 × 10 7 enhancement factor, signal repeatability and stability for R6G molecules. Furthermore, the SERS detection of myricetin content in Longjing green tea from different years is carried out, and the results show a good linear positive correlation with storage years (R 2 =98.2 %), demonstrating the potential application of 3D substrate for sensitive and reproducible SERS.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Kun Liu,Jingxuan Cui,Aihu Feng,Junge Chen,Le Mi,Yang Yu,Xuebing Hu,Jianer Zhou,Yun Yu
Graphene is widely acknowledged as an exceptional electrode material for Capacitive Deionization (CDI) technology, owing to its unique crystal structure and electron transport properties. Typically, three-dimensional graphene is formed by stacking graphene nanosheets in a card-like manner. However, the assembly of these nanosheet layers results in numerous closed and narrow slit-like pores, which diminish pore connectivity and consequently limit its ion storage and capacitive deionization performance. Here, we employed KOH-assisted low-temperature rapid etching of three-dimensional reduced graphene oxide to construct a three-dimensional porous graphene (3D-PG) structure, thereby optimizing the distribution of pores. The 3D-PG electrode retained the open, interconnected three-dimensional structure and excellent conductivity of graphene. The unobstructed pores facilitated deeper ion diffusion and increased ion storage sites, significantly enhancing the ion storage capacity. Therefore, the 3D-PG electrodes exhibit exceptional electrochemical and CDI performance, with a specific capacitance of up to 348F/g at 1 A/g, retaining 99.7 % of this capacitance after 5000 cycles. Additionally, at an initial NaCl concentration of 1000 mg/L and a voltage of 1.6 V, the salt adsorption capacity (SAC) reached 24.5 mg/g, significantly outperforming many other graphene materials. These findings pave the way for synthesizing high-performance graphene-based materials on a large scale, with extensive potential for application in CDI and beyond.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 35
·16730-16743
·
IF 3.553
Liu Mengzhu,Hao Xueyan,Wang Yongpeng,Jiang Zhenhua,Zhang Haibo
Abstract A sustained release system that composed of biodegradable core-sheath nanofibers in 3D hierarchy has been developed through electrospinning of water-in-oil precursor emulsion, in which theophylline dissolved in water was labeled as ‘aqueous phase’ and PLA solution was considered as ‘organic phase’. SEM images revealed that the fibers crossed and overlapped with each other, forming a 3D network-like structure. TEM indicated that the drug was well incorporated into PLA nanofibers, forming a core-sheath structure, which represented a reservoir-type delivery system. The fiber scaffolds were further characterized by FTIR, XRD, TGA, and DSC, which proved theophylline was successfully loaded into the fibers in an amorphous form. The release of drug consisted of three sequential stages, in which the release rate decreased successively. The changes on release rate were proved to be related to the drug diffusion and polymer degradation. At nearly 30 days, the drug still released continuously. This was accomplished by the gradually swelling and degradation of PLA. The successful preparation of the 3D core-sheath nanofibers can incorporate a water-soluble drug in a biodegradable polymer, which effectively protected the activity of the drug, inhibited a sudden release and accomplished sustained release. Graphic abstract
研究领域:
材料科学
·
药学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2024
·Vol. 14
·期 18
·1510
·
IF 4.4
Ning Luo,Hanwen Ge,Xiangyu Liu,Qingdong He,Wenbo Wang,Wenyuan Ma,Fang Guo
Developing environmentally friendly bulk materials capable of easily and thoroughly removing trace amounts of dye pollutants from water to rapidly obtain clean water has always been a goal pursued by researchers. Herein, a green material with a 3D architecture and with strong underwater rebounding and fatigue resistance ability was prepared by means of the assembly of biopolymer chitosan (CS) and natural caraganate fibers (CKFs) under freezing conditions. The CKFs can randomly and uniformly distribute in the lamellar structure formed during the freezing process of CS and CKFs, playing a role similar to that of “steel bars” in concrete, thus providing longitudinal support for the 3D-architecture material. The 2D layers formed by CS and CKFs as the main basic units can provide the material with a higher strength. The 3D-architecture material can bear the compressive force of a weight underwater for multiple cycles, meeting the requirements for water purification. The underwater compression test shows that the 3D-architecture material can quickly rebound to its original shape after removing the stress. This 3D-architecture material can be used to purify dye-containing water. When its dosage is 3 g/L, the material can remove 99.65% of the Congo Red (CR) in a 50 mg/L dye solution. The adsorption performance of the 3D architecture adsorbent for CR removal in actual water samples (i.e., tap water, seawater) is superior than that of commercial activated carbon. Due to its porous block characteristics, this material can be used for the continuous and efficient treatment of wastewater containing trace amounts of CR dye to obtain pure clean water, meaning that it has great potential for the effective purification of dye wastewater.
研究领域:
环境科学
·
材料科学
·
生物化学
✓ 已验证
DOI
PubMed
高影响因子
Joule
·
2018
·
IF 0
Fei Wang,Xianyuan Jiang,Hao Chen,Yuequn Shang,Hefei Liu,Jingle Wei,Wenjia Zhou,Hailong He,Weimin Liu,Zhijun Ning
Summary The power conversion efficiency (PCE) of tin perovskite solar cells is impeded by the extremely poor resistance to oxidation and high density of intrinsic Sn vacancies. Herein, we grow a 2D-quasi-2D-3D Sn perovskite film using removable pseudohalogen NH 4 SCN as a structure regulator. This hierarchy structure remarkably enhances air stability resulting from the parallel growth of 2D PEA 2 SnI 4 as the surface layer. We then explore the hierarchy structure perovskite films in planar structural solar cells, which generate a PCE up to 9.41%. The device retains 90% of its initial performance for almost 600 hr. Our results suggest that adding removable NH 4 SCN in a perovskite precursor can significantly improve the stability and photovoltaic performance of Sn perovskite. This finding provides a powerful strategy to manipulate the structure of low-dimensional perovskite in order to enhance the performance of perovskite solar cells.
研究领域:
材料科学
·
光伏技术
✓ 已验证
DOI
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Wendi Huang,Xinyan Xiao,Mingli Lu,Yu Xiao
A novel BiOCl/Bi 5 O 7 I (BOC-BOI) heterojunction was prepared by growing ultrathin 2D BiOCl nanosheets in situ on the surface of 3D Bi 5 O 7 I microspheres . The 2D/3D heterostructure of BOC-BOI composites inhibited the agglomeration of BiOCl nanosheets, and benefited the multiple reflection and refraction of light, which greatly enhanced the absorption and utilization of light. The 50-BOC-BOI composite showed 97.7% degradation efficiency of rhodamine B (RhB) after 70 min Xe light irradiation. And its apparent degradation rate constant ( k ) was 0.0377 min −1 , being 4.9 and 15.1 times than that of pristine BiOCl (0.0077 min −1 ) and Bi 5 O 7 I (0.0025 min −1 ), respectively. The enhanced photocatalytic activity of BOC-BOI composites was attributed to stronger light capture ability, more abundant active sites and higher charge carrier separation efficiency, confirmed by UV-Vis DRS, SEM, TEM, BET, Zeta potential and electrochemical characterizations. The free radical capture experiments showed that the main active species in this system were holes (h + ) and superoxide free radicals (·O 2 − ). Combining the results of UV-Vis DRS and Mott-Schottky test, a reasonable type II heterojunction mechanism was proposed.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2020
·Vol. 167
·期 2
·022508
·
IF 3.721
Wenjing Yuan,Yaoyao Wu,Chihhsiang Fang,Xiaodan Wang,Xiaomin Huang,Chuanhao Li
Electrocatalytic activity towards oxygen evolution reaction (OER) could be significantly enhanced through generating nanowire array structure of transition-metal oxide on the substrate surface. However, the construction of nanowire array structure generally requires a complex process. Herein, we report a facile and effective approach in situ to generate the three-dimensional (3D) nanowire arrays of copper oxide/cuprous oxide (CuO/Cu2O) for enhanced OER. The resulting typical sample presents an excellent electrocatalytic OER performance with a low overpotential (246 mV) at 10 mA cm−2 and long-term stability, which may be attributed to the characteristics of nanowire array, mesoporous structures and high surface area for CuO/Cu2O composite as follows. The nanowire array and mesoporous structures are beneficial for the diffusion and transport of electrons and reactants, and the high surface area has the potential to provide more active sites in improving the OER activity. This research provides a worthy inspiration for preparation of CuO/Cu2O electrocatalyst with nanowire array structure by in situ conversion route.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qiang Liu,Ping Wang,Bin Liao,Yuan Luo,Kaiqi Yan,Jingjie Zhang
The 3D structure design as an available pathway is sufficiently demonstrated to improve the evaporation performance of solar evaporators. However, the evaporator with a 3D structure exhibiting high evaporation performance results in an increased rate of salt precipitation, which places a higher demand on salt resistance. Therefore, it remains a great challenge to overcome the salt accumulation at the evaporator surface, especially for a 3D cylindrical evaporator. Here, a novel 3D evaporator is developed that integrates an air-laid paper stick and chitosan/CNT (CSC) aerogel, featuring unique water transport channels designed to facilitate the radial transport of salt solution and directional precipitation towards the top edge. It is proved that increasing the height of the evaporator effectively improves the evaporation performance through experiments and thermodynamic calculations. In addition, the effect of relative humidity on the evaporation performance of the 3D interfacial evaporator was systematically studied. On this basis, the effects of including material properties, solution properties, and working environment on the salt deposition behavior are further investigated, which can guide researchers to rationally design according to specific conditions to achieve edge-directed salt deposition.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 74
·59887-59894
·
IF 3.84
Yimai Liang,Na Guo,Linlin Li,Ruiqing Li,Guijuan Ji,Shucai Gan
Porous 3D Ce-doped ZnO microflowers were prepared by a hydrothermal method followed by a low temperature annealing process. The effects of Ce doping on the structural and photocatalytic properties of porous ZnO microflowers were investigated in detail. The samples were characterized using XRD, SEM, EDS, XPS, DRS, PL spectra and BET surface area measurements. According to the XRD analysis, both of the crystalline structures of the synthesized pure ZnO and Ce-doped ZnO samples are hexagonal wurtzite. The XPS results demonstrated the successful synthesis of Ce4+ doped ZnO. In addition, the SEM morphologies showed the unique porous 3D flower-like structure of the Ce-doped ZnO. Compared with the porous ZnO microflowers, the Ce-doped ZnO samples exhibit improved photocatalytic performance in the decomposition of Rhodamine B (RhB). It is proposed that the special structural feature with a porous 3D structured and Ce modification lead to the rapid photocatalytic activity of the Ce-doped ZnO microflowers.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Soft Matter
·
2022
·Vol. 18
·期 19
·3748-3755
·
IF 4.046
Jianzhuang Shi,Ruoyu Dong,Changbin Ji,Wenxin Fan,Tengbo Yu,Yanzhi Xia,Kunyan Sui
Self-wrinkling hydrogels enable various engineering and biomedical applications. The major challenge is to couple the self-wrinkling technologies and enhancement strategies, so as to get rid of the poor mechanical properties of existing self-wrinkling gels. Herein we present a facile diffusion–complexation strategy for constructing strong and ultratough self-wrinkling polyelectrolyte hydrogels with programmable wrinkled structures and customizable 3D configurations. Driven by the diffusion of low-molecular-weight chitosan polycations into the polyanion hydrogels, the high-modulus polyelectrolyte complexation shells can form directly on the hydrogel surface. Meanwhile, the polyanion hydrogels deswell/shrink due to the low osmotic pressure, which applies an isotropous surface compressive stress for inducing the formation of polygonal wrinkled structures. When the diffusion–complexation reaction occurs on a pre-stretched hydrogel sheet, the long-range ordered wrinkled structures can form during the springback/recovery of the hydrogel matrix. Moreover, through controlling the regions of diffusion–complexation reaction on the pre-stretched hydrogels, they can be spontaneously transformed into various 3D configurations with ordered wrinkled structures. Notably, because of the introduction of plenty of electrostatic binding (i.e., sacrificial bonds), the as-prepared self-wrinkling gels possess outstanding mechanical properties, far superior to the reported ones. This diffusion–complexation strategy paves the way for the on-demand design of high-performance self-wrinkling hydrogels.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）