One-dimensional Nanofibers Research Articles

Defect-rich conversion-based manganese oxide nanofibers: An ultra-high rate capable anode for next-generation binder-free rechargeable batteries

Recently, nanostructured materials with oxygen defects and their utilization as electrode materials for lithium-ion batteries (LIBs) are gaining considerable popularity. However, it is still unclear how surface morphology, nanostructuring, and oxygen defects contribute to Li-storage characteristics. In view of this, the present research work is focused on the fabrication of one-dimensional, porous, and oxygen-deficient nanofibers of MgMn2O4 (MMO) through electrospinning technique, followed by their subsequent heat-treatment on various temperatures such as 450 °C, 600 °C, and 750 °C. A quantitative analysis of oxygen defects indicates that MMO-600 contains a high number of oxygen vacancies. Further, the binder-free electrodes of all the samples are fabricated via electrophoretic deposition technology and their Li-storage performance is investigated. As a binder-free LIB anode, MMO-600 exhibits excellent reversible specific capacity, rate capability, and cyclic stability (817 mAh g−1 after 500 cycles at 2 C) with ∼ 99% coulombic efficiency. Further, MMO-600 displays the capacity of 228 mAh g−1 at 10 C is found to be better than the MMO-450 and MMO-750. Additionally, the feasibility of MMO-600 is also investigated in full cell configuration with a binder-free LiNi1/3Mn1/3Co1/3O2 cathode, which exhibited an energy density of 166 ( ± 3) Wh kg−1.

Pseudocapacitive sodium-ion storage in one-dimensionally structured anatase TiO2 nanofiber anode for high performance sodium-ion batteries

Nanofibers provide high surface area to volume ratio, vectoral conduction, fast ionic diffusion, and short pathways for sodium ions. Titania nanofibers exhibit excellent electrochemical performance when used for sodium-ion storage. One-dimensional titania nanofiber was synthesized by an electrospinning process as an anode material for high capacity sodium-ion batteries. The electrochemical kinetics of titania nanofiber for sodium-ion storage were examined. Titania nanofiber exhibited pseudocapacitive capacitive properties with high rate performance, giving capacity of 97 mA h g−1 after 1000 cycles with a current density of 1000 mA g−1. Even when current rate returned to the initial current density of 50 mA g−1, titania nanofiber electrode capacity climbed to 206 mA h g−1 again without capacity fading, which indicated good rate performance, superior sodium insertion/extraction reaction, and high reversible capacity.

String of ZIF-derived hollow beaded nanocage embedded into carbon nanofiber with intensified exposed Co-Nx sites for efficient oxygen catalysis in various fuel cell devices

The rational control of Co-Nx active sites dispersion in nanomaterials is significant to construct efficient oxygen reduction reaction (ORR) electrocatalysts in fuel cells. Herein, a novel strategy for the scalable synthesis of carbon nanofiber supported hollow beaded nanocage with accessible Co-Nx sites in cavity wall (PAN-Co-ZIF-8-C-A and PAN-Co/ZIF-8-C-A) originated from zeolitic imidazolate frameworks (ZIFs) and polyacrylonitrile (PAN) is reported. Remarkably, the formed samples modified with Co-Nx sites exhibit superior ORR activity, which makes it promising ORR catalysts for microbial fuel cell (MFC) and direct methanol fuel cell (DMFC). Accordingly, the maximum power densities of MFC decorated with PAN-Co-ZIF-8-C-A and PAN-Co/ZIF-8-C-A achieve 869.6 and 888.3 mW cm−2, which are 1.17 and 1.19 times higher than that of Pt/C. In addition, the PAN-Co/ZIF-8-C-A modified DMFC exhibits comparable power density of 23.27 mW cm−2 close to Pt/C electrode (25.63 mW cm−2). Such commendable catalytic performances can be primarily attributed to the synergistic effect of hierarchical porosity for fast mass transport, high conductivity for electron migration, and well-tuned Co-Nx sites for oxygen reduction. This facile-effective optimization strategy may open a new avenue for exposing the catalytic centers of one-dimensional (1D) nanofiber and ZIFs-derived oxygen catalyst in fuel cells.

Metal-organic-framework-derived bimetallic carbon-based catalysts as efficient oxygen reduction reaction electrocatalysts

The sluggish kinetics of oxygen reduction reaction (ORR) as well as costly production of current Pt/C catalysts limit the practical application of Zn-air battery (ZAB). It is challenging to synthesize an ideal ORR catalyst with intriguing features, including a conductive network, a directed pathway for charge transfer, and abundant active sites such as bimetallic alloy nanoparticles. In this work, FeCo alloys are successfully combined due to the uniform distribution of encapsulated Fe and surface-bound Co by means of electrospinning and pyrolysis. As a result, the prepared FeCo/N-CNFs have an exceptional ORR performance (E1/2 = 0.88 V, j = 5.20 mA cm−2) that considerably outperforms Pt/C (E1/2 = 0.85 V, j = 4.75 mA cm−2). In addition, ZAB based on FeCo/N-CNFs display a superior peak power density (356.23 mW cm−2) than Pt/C-ZAB (299.29 mW cm−2). The high degree of graphitization from FeCo alloy nanoparticles, the directed charge transfer channel from a one-dimensional nanofiber structure, and the interaction between M-NX and pyridine N/graphite N species all contribute to the exceptional electrocatalytic performance.

Asymmetric Polymerization-Induced Crystallization-Driven Self-Assembly of Helical, Rod-Coil Poly(aryl isocyanide) Block Copolymers

Polymerization-induced crystallization-driven self-assembly (PI-CDSA) is combined, for the first time, with helical, rod-coil block copolymer (BCP) self-assembly to enable scalable and controllable in situ synthesis of chiral nanostructures of variable shape, size, and dimensionality. Herein, we report newly developed asymmetric PI-CDSA (A-PI-CDSA) methodologies in the synthesis and in situ self-assembly of chiral, rod-coil BCPs composed of poly(aryl isocyanide) (PAIC) rigid-rod and poly(ethylene glycol) (PEG) random-coil components. Using PEG-based nickel(II) macroinitiators, the construction of PAIC-BCP nanostructures with variable chiral morphologies is accomplished at solids contents ranging 5.0-10 wt %. At low core-to-corona ratios for PAIC-BCPs, we demonstrate the scalable formation of chiral one-dimensional (1D) nanofibers via "living" A-PI-CDSA whose contour lengths can be tuned through alterations to unimer-to-1D seed particle ratio. At high core-to-corona ratios, A-PI-CDSA was implemented for the rapid fabrication of molecularly thin, uniform hexagonal nanosheets via spontaneous nucleation and growth aided by vortex agitation. Investigations into 2D seeded, living A-PI-CDSA revealed a brand-new paradigm in the context of CDSA where hierarchically chiral, M helical spirangle morphologies (i.e., hexagonal helicoids) are size-tuned in three dimensions (i.e., heights and areas) via alterations to unimer-to-seed ratio. These unique nanostructures are formed in situ at scalable solids contents up to 10 wt % via rapid crystallization about screw dislocation defect sites in an enantioselective fashion. The liquid crystalline nature of PAIC blocks dictates the hierarchical assembly of these BCPs, with chirality translated across length scales and in multiple dimensions affording large amplifications in chiroptical activity with g-factors reaching -0.030 for spirangle nanostructures.

Bean pod-like hollow Zn2SnO4/SnO2 heterostructures in N-doped carbon nanofibers as anode material for high performance lithium storage

Tin-based composites have been extensively investigated as a potential anode for high performance lithium-ion batteries (LIBs) up until this point. However, because of extreme volume expansion and crystal crushing, the researchers have consistently experienced a loss in capacity during lithiation and alloying. To buffer the volume change and achieve superior rate capability, the hollow cube-shaped Zn2SnO4/SnO2 which is wrapped with one-dimensional N-doped carbon nanofibers (CNFs) is prepared. The composites display a delicate bean pod-like heterointerface structure, in which the built-in electric field between Zn2SnO4 and SnO2 can help to speed up the transportation of Li-ions during lithiation and delithiation processes. Additionally, the abundant Zn2SnO4/SnO2 heterointerfaces expose more active sites and make it easier for electrolyte and Li-ion to penetrate. And the N-doped carbon skeleton outside of the Zn2SnO4/SnO2 can help to keep the structural integrity and suppress volume expansion during cycling. As expected, the as-prepared samples exhibit excellent rate performance and a very high ultimate discharge capacity of 765.9 mA h g−1 after 500 cycles at current density of 1.0 A g−1. Furthermore, a full-cell with a prelithiated Zn2SnO4/SnO2 @CNFs-600 anode and a LiFePO4 cathode also displays superior rate and cycling performance. This work highlights the significance of chemical heterointerface engineering in the design of high-performance electrodes for LIBs.

Charge-Transfer-Induced Self-Assembly of Doped Conjugated Block Copolymer Nanofibers.

Here, we report charge-transfer-driven self-assembly of conjugated block copolymers (BCP) into highly doped conjugated polymer nanofibers. The ground-state integer charge transfer (ICT) between a BCP composed of poly(3-hexylthiophene) and poly(ethylene oxide) (P3HT-b-PEO) and electron-deficient 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) induced spontaneous self-assembly of the donor and the acceptor into well-defined one-dimensional nanofibers. The presence of the PEO block plays an important role for the self-assembly by providing a polar environment that can stabilize nanoscale charge transfer (CT) assemblies. The doped nanofibers were responsive to various external stimuli such as heat, chemical, and light and exhibited efficient photothermal properties in the near-IR region. The CT-driven BCP self-assembly reported here provides a new platform for the fabrication of highly doped semiconductor nanostructures.

One-dimensional In2O3 nanofibers patterned onto functionalized catalytic electrodes: A novel approach for selective xylene detection

Remarkable efforts have been devoted for enhancing gas selectivity of chemiresistors via tuning the sensing materials. However, the selective detection of low reactive gases remains challenging. Herein, we report a new strategy for selective detection of low reactive gases by patterning nanofibers and tuning the catalytic property of electrode. In this approach, straight single In2O3 nanofibers are patterned onto Au, Pt, and ITO interdigitated electrodes (IDEs) via direct-write near-field electrospinning; the resulting low coverage of the sensing materials (∼0.12%) exposes the electrode to analyte gases. The gas sensing characteristics of the sensors are determined by the catalytic activity of each electrode. Furthermore, the functionalization of Pt IDE with Au nanoparticles could achieve extremely high selectivity and response toward xylene. The sensing properties and mechanisms of the nanopatterned sensors are investigated regarding electrode composition, degree of electrode exposure, and catalyst location on the electrode and/or sensing materials. The key strategies for achieving high selectivity are the conversion of low reactive xylene gas into more reactive intermediate species while highly reactive interference gases are completely oxidized at open catalytic electrodes. Catalyst functionalization and exposure of electrodes can provide new guidelines for designing high performance gas sensors for new applications.

Core-Sheath Pt-CeO2/Mesoporous SiO2 Electrospun Nanofibers as Catalysts for the Reverse Water Gas Shift Reaction.

One-dimensional (1D) core-sheath nanofibers, platinum (Pt)-loaded ceria (CeO2) sheath on mesoporous silica (SiO2) core were fabricated, characterized, and used as catalysts for the reverse water gas shift reaction (RWGS). CeO2 nanofibers (NFs) were first prepared by electrospinning (ES), and then Pt nanoparticles were loaded on the CeO2 NFs using two different deposition methods: wet impregnation and solvothermal. A mesoporous SiO2 sheath layer was then deposited by sol-gel process. The phase composition, structural, and morphological properties of synthesized materials were investigated by scanning electron microscope (SEM), scanning transmission electron microscopy (STEM), X-ray diffraction (XRD), nitrogen adsorption/desorption method, X-ray photoelectron spectroscopy (XPS), inductively coupled plasma-optical emission spectrometry (ICP-OES) analysis, and CO2 temperature programmed desorption (CO2-TPD). The results of these characterization techniques revealed that the core-sheath NFs with a core diameter between 100 and 300 nm and a sheath thickness of about 40-100 nm with a Pt loading of around 0.5 wt.% were successfully obtained. The impregnated catalyst, Pt-CeO2 NF@mesoporous SiO2, showed the best catalytic performance with a CO2 conversion of 8.9% at 350 °C, as compared to the sample prepared by the Solvothermal method. More than 99% selectivity of CO was achieved for all core-sheath NF-catalysts.

Constructing the Sulfur-Doped CdO@In2O3 Nanofibers Ternary Heterojunction for Efficient Photocatalytic Hydrogen Production.

An S-doped CdO@In2O3 nanofiber was successfully designed by in-situ electrospinning along and subsequent calcination treatment. Under artificial sunlight illumination, the S/CdO@In2O3-25 displayed a superior photocatalytic hydrogen evolution rate of 4564.58 μmol·g-1·h-1, with approximately 22.0 and 1261.0-fold of those shown by the S/CdO and S/In2O3 samples, respectively. The experimental and theoretical analyses illustrate that the unique one-dimensional (1D) nanofiber morphology and rich oxygen vacancies optimized the electronic structure of the nanofibers and adsorption/desorption behaviors of reaction intermediates, contributing to the realization of the remarkable solar-to-H2 conversion efficiencies. Moreover, the staggered band structure and intimate contact heterointerfaces facilitate the formation of a type-II double charge-transfer pathway, promoting the spatial separation of photoexcited charge carriers. These results could inform the design of other advanced catalyst materials for photocatalytic reactions.

Two-dimensional peptide nanosheets functionalized with gold nanorods for photothermal therapy of tumors.

Self-assembled peptide nanomaterials exhibit great potential for applications in materials science, energy storage, nanodevices, analytical science, biomedicine, tissue engineering, and others due to their tailorable ordered nanostructures and unique physical, chemical, and biological properties. Although one-dimensional peptide nanofibers and nanotubes have been widely used for biomedical applications, the design and synthesis of two-dimensional (2D) peptide nanostructures for cancer therapy remain challenging. In this work, we describe the creation of 2D biocompatible peptide nanosheets (PNSs) through molecular self-assembly, which can provide support matrixes for conjugating gold nanorods (AuNRs) to form high-performance 2D nanomaterials for photothermal conversion. After molecular modification, AuNRs can be chemically conjugated onto the surface of 2D PNSs, and the created PNS-AuNR nanohybrids serve as a potential nanoplatform for photothermal therapy of tumor cells. The obtained results indicate that both PNSs and AuNRs contribute to the improved efficiency of photothermal therapy (PTT) of tumors, in which 2D PNSs provide high biocompatibility and a large surface area for binding AuNRs, and AuNRs show a high PTT ability towards tumors. The strategies of molecular design and functional tailoring of self-assembled peptide nanomaterials shown in this study are valuable and inspire the synthesis of biomimetic nanomaterials for biomedicine and tissue engineering applications.

Ultrasmall SnFe2O4 nanoparticles anchored on N-doped carbon nanofibers for ultralight and high-performance microwave absorption.

One-dimensional (1D) N-doped carbon nanofibers decorated with ultrafine (∼4.5 nm) SnFe2O4 nanoparticles (denoted as SFO/N-CNFs) are successfully synthesized by a combination of electrospinning and solvothermal process, and their microwave absorption (MA) properties are reported for the first time. With only 5 wt% filler loading in a silicone rubber matrix, the optimum reflection loss (RL) could reach -46.5 dB and the qualified frequency bandwidth (RL < -10 dB) can be capable of 4.8 GHz at 1.6 mm, exhibiting better comprehensive absorption performance relative to other analogous absorbers. The lightweight and highly efficient MA of SFO/N-CNFs is largely ascribed to the improved impedance matching and satisfactory attenuation ability caused by the synergistic effect between the ultrasmall-sized SFO nanoparticles (NPs) and 1D N-CNF matrix. This work not only offers a novel and promising high-performance microwave absorber, but also offers a general approach to designing and fabricating ultrasmall transition metal oxide nanoparticle decorated carbon-based composite nanostructures for multifunctional applications.

In situ assembly of one-dimensional Pt@ZnO nanofibers driven by a ZIF-8 framework for achieving a high-performance acetone sensor.

To obtain a high-performance gas sensor, it is essential to ingeniously design sensing materials containing the features of high catalytic performance, abundant oxygen vacancies, and splendid grain dispersibility through a simple method. Inspired by the fact that ZIF-8 contains semiconductor metal atoms, well-arranged ZnO nanoparticle (NP)-in situ assembled one-dimensional nanofibers (NFs) are obtained by one-step electrospinning. By incorporating Pt NPs into the cavity of ZIF-8 NPs, well-dispersed Pt@ZnO NPs driven by Pt@ZIF-8 composites are obtained after annealing. The well-arranged Pt@ZnO NP-assembled NFs not only exhibit abundant oxygen vacancies but also avoid the self-aggregation of ZnO and Pt NPs. Meanwhile, the small Pt NPs could improve the catalytic effect in return. Therefore, the gas sensor fabricated based on the above materials exhibits an acetone sensitivity of 6.1 at 370 °C, compared with pristine ZnO NFs (1.6, 5 ppm). Moreover, the well-arranged Pt@ZnO NP-assembled NFs show exceptional sensitivity to acetone with a 70.2 ppb-level detection limit in theory. The synergistic advantages of the designed sensing material open up new possibilities for non-invasive disease diagnosis.

Construct NiSe/NiO Heterostructures on NiSe Anode to Induce Fast Kinetics for Sodium-Ion Batteries

It is of great significance to design and innovate electrode materials with unique structures to effectively optimize the electrochemical properties of the secondary battery. Herein, inspired by neuron networks, an ingenious synthesis is proposed to fabricate NiSe with multidimensional micro-nano structures, followed by in situ construction of NiSe/NiO heterostructures via a temporary calcination. The major structure of bulk NiSe synthesized by the solvothermal method is 3-dimensional micron cluster spherical particles interwoven by uniform one-dimensional nanofibers. Such structures possess the synergistic advantages of nano and micro materials. After a temporary calcination in air, NiSe/NiO heterostructures should be formed in the bulk NiSe, which provides a built-in electric field to enhance diffusion kinetics of sodium ions. This special neural-like network and heterojunction structures ensure the excellent structural stability combined with rapid kinetics of the electrode, releasing 310.9 mAh g −1 reversible capacity after 2,000 cycles at 10 A g −1 . Furthermore, the electrochemical storage and ion transport mechanisms are elaborated by electrochemical analysis and theoretical calculation in more detail.

Flexible cobalt nanoparticles/carbon nanofibers with macroporous structures toward superior electromagnetic wave absorption

The increasing electromagnetic (EM) pollution that has seriously threatened human health and electronic devices urgently required high-performance absorbents toward attenuating EM wave (EMW). The combination of microstructure modulation and appropriate components regulation has proven to be a feasible strategy for improving the EMW absorption performance of absorbents. In this work, well-designed one-dimensional carbon nanofibers with macroporous structures and uniformly magnetic metal nanoparticles modification were prepared by the hard-template assisted electrospinning method followed by carbonization and template-elimination processes. The strong interfacial polarization loss and multireflection strengthened by the hollow structures and the magnetic loss induced by the introduced cobalt nanoparticles evidently enhanced the impedance matching level of the macroporous carbon nanofibers/cobalt nanoparticles (MCF/Co). As a result, MCF/Co composite offers broad absorption bandwidth (6.24 GHz) and strong electromagnetic wave absorption performance (−40.1 dB) at a thickness of 3.0 mm. This work inspires the rational one-dimensional macroporous carbon nanofibers design for new-generation EMW materials and provides an important research basis for the porous flexible EMW absorption materials.

Ternary Nickel/Molybdenum Dioxide/Carbon composited nanofibers for broadband and strong electromagnetic wave absorption

One-dimensional carbon-based nanofibers are considered as a group of the most promising candidates applied in electromagnetic wave absorption owing to their shape anisotropy, tractability, and stability. To further meet the requirements of lightweight, broadband and effective features, in this work, nickel/carbon nanofibers modified with molybdenum dioxide were resoundingly fabricated through electrospinning and subsequent carbonization. According to textural characteristic analyses, nickel nanoparticles with a diameter of approximately 30 nm were supported on the surface of the carbon nanofibers, while the smaller MoO2 grains were embedded inside. Under the premise of realizing an outstanding electromagnetic wave absorption intensity (−64.0 dB at 8.0 GHz), the ternary composites achieved a wide effective absorption bandwidth up to 6.9 GHz (9.5 GHz–16.4 GHz). Based on the investigations of electromagnetic parameters and field distribution simulation results, the interwoven network structure and the synergistic effect between each component not only endowed the materials with perfect impedance matching, but introduced manifold loss mechanisms including magnetic loss, conductivity loss and multiple polarization relaxation. Thus, this work provided theoretical guidance and enlightenment for the design of new generation fibrous electromagnetic wave absorbers.

Integrating built-in fine alloying FeNi3 in carbon nanofiber reinforcing intermetallic synergy for PMS activation to degrade Bisphenol A

Heterogeneous peroxymonosulfate (PMS) activation for the mineralization of pollutants has attracted growing attention, while alloying bimetal catalysts afford big promises in synergetic catalysis. Here, by an alteration of electrospun precursor, one-dimensional carbon nanofiber (CNF) integrated with Prussian blue analogs (PBA)-derived alloyed fine plasmonic FeNi3 hybrid catalyst (FeNi3@CNF) was constructed by electrospinning technique with subsequent confinement calcination. The amount of PBA in fiber precursor and thermal treatment temperature were alternatively adjusted to control the distribution and concentration of alloyed FeNi3 in carbon nanofiber. This unique structure combines the advantages of abundant internal porosity of N-doping carbon fiber and uniforms active FeNi3 alloys with highly-exposed reactive sites, facilitating the electron transport and proximity of reactant molecules in catalytic oxidation. The synergistic and interfacial effect of optimal FeNi3@CNF endowed the ultra-fast degradation activity against bisphenol A (BPA) through rapid persulphate activation to generate four reactive active species. Specifically, 20 mg L−1 of BPA was completely degraded within 4 min with a reaction rate constant of 2.736 min−1. Impressively, by innovating the utilization of the Prussian blue precursor in electrospinning, the optimal FeNi3@CNF shows 18.5, 101.3, and 248.5 times activity enhancement in BPA degradation compared to that of Fe@CNF, Ni@CNF, and Fe&Ni@CNF, revealing the appreciable synergy of bimetallic alloys in PMS activation. In addition, the improved catalytic performance of FeNi3@CNF under light irradiation was also simulated, confirming that the enhanced photothermal conversion ability of plasmonic alloys and carbon fiber advance the degradation of BPA.

Multicomponent Nanoparticles Synergistic One-Dimensional Nanofibers as Heterostructure Absorbers for Tunable and Efficient Microwave Absorption

HighlightsHeterogeneous interface engineering is designed by electrospinning.The introduction of Co3SnC0.7 nanoparticles increased the loss mechanism.Enhanced electromagnetic loss and improved impedance matching are achieved.The absorbers exhibit high-efficient electromagnetic wave absorption performance.

High-efficiency pollutant degradation, disinfection and H2O2 production activities of magnetically separable Co-imbedded N-doped carbonaceous framework/supramolecular perylene diimide photocatalyst

Herein, a magnetically separable Co-imbedded N-doped carbonaceous framework (Co-N-C)/supramolecular perylene diimide (SA-PDI) photocatalyst was prepared via an in-situ self-assembly approach. The one-dimensional (1D) SA-PDI nanofibers could sufficiently contact with the three-dimensional (3D) ZIF-67 derived porous carbon framework of Co-N-C, forming a 3D/1D heterostructure via π-π interaction and hydrogen bonding. Stable 3D porous structure, high surface area, superior conductivity and strong magnetism of Co-N-C could work as a multifunctional co-catalyst to extend the spectral-response range, increase the adsorption capacity, accelerate the charge separation efficiency and improve the recycling ability of SA-PDI. Compared to SA-PDI, Co-N-C/SA-PDI photocatalyst displayed significantly improved pollutant degradation, H2O2 production and disinfection activities under visible light on account of the satisfactory synergetic action between Co-N-C and SA-PDI. The degradation rates of Co-N-C/SA-PDI-70% for phenol, norfloxacin and ethylene were about 4.7, 5.2 and 3.1 times as fast as those of SA-PDI, respectively. The H2O2 generation of Co-N-C/SA-PDI-70% (894 µmol L−1 g−1) was nearly 3.5 times as that of SA-PDI. Additionally, Co-N-C/SA-PDI-70% could kill 88.0% of Staphylococcus aureus cells within 2 h, whereas SA-PDI only inactivated 53.1%. The study provides a novel strategy to design high-efficiency SA-PDI-based photocatalysts for energy conversion and environmental remediation.

Constructing FeS2/TiO2 p-n heterostructure encapsulated in one-dimensional carbon nanofibers for achieving highly stable sodium-ion battery

Iron sulfides (FeS2) is a promising anode material for advanced sodium-ion batteries (SIBs) owing to its high theoretical capacity of 894.0 mAh/g and abundant natural resource. However, the inferior electronic conductivity, huge volume expansion, and dissolution of sodium polysulfides generated upon conversion reaction process limit its practical application in SIBs. Although the introduction of carbon materials could significantly compensate for conductivity and structural destroy, but the poor cycling stability aroused by active sulfide loss still urgently settled. Herein, TiO2 featuring strong affinity for sodium polysulfides was engaged as one active component to construct FeS2/TiO2 heterostructure. Additionally, TiO2 is a typical n-type semiconductor with a broad bandgap, which will induce the formation of a strong built-in electric field at the interface of FeS2/TiO2 and thus expedite the charge transport during sodium storage process. Consequently, FeS2/TiO2 p-n heterostructure nanoparticles encapsulated in one dimensional carbon nanofibers (FeS2/TiO2@CNFs) were synthesized by simple electrospinning technology and subsequent carbonization/sulfidation treatment, as well as systemically investigated its electrochemical performance as an anode material for SIBs. As expected, FeS2/TiO2@CNFs anode delivers a high specific capacity of 563.1 mAh g-1 at 1.0 A g-1 over 100 cycles, and superior rate capability (404.0 mAh g-1 at 10.0 A g-1). Even after 8000 cycles at 10.0 A g-1, FeS2/TiO2@CNFs anode still exhibits superior cycling durability. Inspired by the admirable sodium storage performance of FeS2/TiO2@CNFs heterostructure, the architectural design strategy is expected to be widely adopted for meliorating the electrochemical performance of metal sulfide anodes.