Hierarchical Heterostructures Research Articles

A Se-induced heterostructure electrode with polymetallic-CoNiFe towards high performance supercapacitors.

Rational regulation of electrode materials with high conductivity and unexceptionable cycling stability is crucial to meet the requirements of high-performance supercapacitors (SCs). Herein, a hierarchical porous kebab-like heterostructure (CoNiFe-Se) is prepared by a facile solvothermal reaction and selenization step. Both experimental and computational results demonstrate that incorporating Se via hydrothermal reaction contributes to modulating the morphology and electronic structure of transition metal carbonate hydroxides. The heterostructured electrode with abundant active sites composed of electroactive polymetallic-CoNiFe imparts excellent charge storage. Additionally, the unique structure of CoNiFe-Se with its heterogeneous interface, oxygen vacancies and cavities improves electrochemical activity, accelerates electron transfer and suppresses the volume expansion during the cycling. As a result, the CoNiFe-Se exhibits excellent electrochemical performance of 5040 mF cm-2 at 1 mA cm-2 and long-term durability with 85.7% retained capacitance after 10 000 cycles. Interestingly, an integrated asymmetric supercapacitor performs well for energy storage. This finding opens a new avenue for developing transition metal carbonate hydroxides using selenization strategies in the field of SCs.

A Brief Overview of the Morphological Characteristics of Cain2s4- based Photocatalysts and Their Influence on Boosting the Photocatalytic Behavior

CaIn2S4-based heterojunctions have gained significant attention as robust photocatalysts for sustainable environmental applications like organic degradation and H2 production. This study introduces a brief overview of the morphological characteristics of CaIn2S4-based composites and their effects on their catalytic properties. The fabrication of CaIn2S4- based photocatalysts with hierarchical or nanosheet heterostructures could offer an adequate surface area to volume ratio, enhancing the accessibility of pollutants to the catalyst surface and boosting the photodegradation performance. Moreover, the increased active sites reflect positive effects on the visible-light absorption efficiency. The perfect interfacial contact in the CaIn2S4-based composites facilitated the photocarrier transfer, hampered their reunion rate, prolonged their lifetime, and improved their utilization. The morphological durability and stability of CaIn2S4-based composites are also important variables influencing the photoreaction capacity. Finally, the optimization of surface states and morphological defects can modify the electronic structure of CaIn2S4-based semiconductors, improving their optical properties.

Controllable synthesis of NiCo2O4 nanoparticles supported on MnO2 nanowires with excellent oxidase-mimicking performance

In this work, we developed a facile approach to decorate NiCo2O4 nanoparticles on MnO2 nanowires, leading to the formation of 1D hierarchical heterostructures as efficient oxidase mimics for the detection of glutathione.

Phytic acid-modified NiFe-PBA stacked by π–π force for reinforcement electrocatalytic water oxidation

We synthesized NiFe-PBA@Ni(OH)2 hierarchical heterostructure catalysts. Due to the chelation of PA and π–π stacking force, the overall water splitting of 10 mA cm−2 requires only 1.55 V low cell voltage.

3D grape string-like heterostructures enable high-efficiency sodium ion capture in Ti3C2Tx MXene/fungi-derived carbon nanoribbon hybrids.

2D transition metal carbides and carbonitrides (MXenes) have emerged as promising electrode materials for electrochemistry ion capture but always suffer from severe layer-restacking and irreversible oxidation that restrains their electrochemical performance. Here we design a dual strategy of microstructure tailoring and heterostructure construction to synthesize a unique 3D grape string-like heterostructure consisting of Ti3C2Tx MXene hollow microspheres wrapped by fungi-derived N-doping carbon nanoribbons (denoted as GMNC). The 3D grape string-like heterostructure effectively avoids the aggregation of Ti3C2Tx MXene sheets and enhances the stability of MXenes, providing abundant active sites for ion capture, and an interconnected conductive bionic nanofiber network for high-rate electron transport. In consequence, GMNC achieves a superior adsorption capacity for sodium ions (Na+) in capacitive deionization (CDI) (162.37 mg gNaCl-1) with an ultra-high instantaneous adsorption rate (30.52 mg g-1 min-1) at an applied voltage of 1.6 V and satisfactory cycle stability over 100 cycles, which is a strong performer among the state-of-the-art values for MXene-based CDI electrodes. In addition, in situ electrochemical quartz crystal microbalance with dissipation monitoring (EQCM-D) measurement combined with density functional theory (DFT) reveals the mechanisms of the Na+ capture process in the GMNC heterostructure. This work opens a new avenue for designing high-performance MXenes with a 3D hierarchical heterostructure for advanced electrochemical applications.

Al, P-co-doping and interface engineering synergistically boost the electrocatalytic performance of WS2/Ni3S2/NiS nanosheet heterostructure for efficient hydrogen evolution reaction.

The fabrication of earth-abundant electrocatalysts capable of facilitating hydrogen evolution reactions (HER) is essential for creating sustainable hydrogen fuel by water splitting. Here, we present a one-pot hydrothermal approach for producing aluminum and phosphorus co-doped NiS/Ni3S2/WS2 heterostructure hybrid frameworks on nickel foam. The optimal Al and Al, P/NiWS-b@NF catalyst exhibits high HER activity with overpotentials of 139 and 227 mV at current densities of 10 and 50 mA cm-2, respectively, thanks to the synergistic effect of the various constituents of the catalyst. What is more, it also exhibits a promising Tafel slope of 124 mV dec-1 and is electrocatalytically durable for 10 hours in 0.5 M H2SO4 solution. The high HER activity of Al, P/NiWS-b@NF could be explained by the large number of active sites of the hierarchical heterostructure and electron effects produced by the combination of interfacial and aluminum and phosphorus doping.

Hierarchical heterostructure of vacant carbon-box erected MoSe2-x nanosheets as a functional mediator for high-performance lithium-sulfur batteries

The shuttle effect of polysulfides and short cycling life are serious obstacles to the commercialization of lithium–sulfur (Li–S) batteries. One of the effective solutions is the use of polar materials as electrocatalysts to increase the conversion and adsorption efficiency of polysulfides in Li–S cells. Herein, an ingenious design of hierarchical hollow nanoboxes composed of ultrathin C and MoSe2-x nanosheets was successfully fabricated via the stencil etching and selenization processes. The peculiar nanoboxes architecture exhibited plentiful catalytic active sites for polysulfides due to abundant outer nanosheets. Particularly, density functional theory (DFT) calculations demonstrated that the existing Se vacancies of C-MoSe2-x nanoboxes can validly suppress the shuttle effect of Li–S batteries when they serve as catalysts to modify separators. As a result, the Li–S battery-based C-MoSe2-x functional interlayer showed excellent discharge capacity and cycling life of 528.36 mAh/g (470.20 mAh/g) after 500 cycles at a discharge current of 0.5 C (1 C), and delivered 440.61 mAh/g even after 150 cycles at 0.1 C with an S loading of 5 mg cm−2. This work provides a novel design for carbon-based transition metal chalcogenide hybridized materials and offers insightful perspectives for other energy fields.

Processing mechanism synergizing surface and intercalation pseudocapacitance engineering fast-charging Li-based anode materials

Pseudocapacitive material can achieve rapid charge and discharge response. In this study, a vanadium-based conductive network hydrate (Na0.13Mg0.02)V2O5·0.98H2O (NMVO) was designed. The Na+ and Mg2+ in NMVO are sandwiched between two layers of vacancy-ordered prisms and monoclinic nanonetwork V3O7 (VO2:V2O5 = 1:1) to form a conductive network with a layer spacing of up to 11.67 Å, this structure facilitates rapid interlayer diffusion of cations and enhanced conductivity. Reduction-NMVO (r-NMVO) with hierarchical heterostructures was prepared via an in-situ electrochemical process to generate interlayer vanadium-based active sites (LiV3O8, LiV2O5, Na3V3O8, MgVO3) with multi-electron reaction, which enhanced the generation of surface redox pseudocapacitance. The interlayer heterostructure is integrated with the core of the precursor V3O7 to form an active site-rich conductive network with strong pulse impact resistance, which promotes the generation of intercalated pseudocapacitance and increases the cycle stability of the electrode. This intercalation-surface redox pseudocapacitive mechanism was confirmed by first-principles, in-situ, and ex-situ characterization analysis. The r-NMVO|Li battery still maintains a capacity of 95.5 % after 65,500 cycles at a current density of 50 A g−1. These results contribute directly to the realization of stable, fast charge and discharge material design.

(Invited) Role of Heterojunctions in Metal Oxide Heterostructures for Energy and Environmental Applications

Heterostructures made from metal oxide semiconductors are fundamental for the development of high-performance gas sensors and electrocatalysts, for examples. Here, I will introduce hierarchical heterostructures composed of p-, n-type and insulating metal oxide shells.Precisely controlled films of alternating metal oxides can be uniformly deposited onto the inner and outer walls of the CNTs and onto mesoporous substrates by atomic layer deposition. The morphological, microstructural and electrical characteristics of the heterostructures were thoroughly investigated. Electrical resistance measurements highlighted the large influence of the metal oxides thickness and charge carriers types, suggesting that the conductivity of the electrodes are dominated by Schottky barrier junctions across the heterojunctions.The behavior of the heterostructured electrodes in sensors and in electrocatalysis applications was investigated for low concentrations of volatile organic compounds and pollutants, and the oxygen evolution reaction in acidic media, respectively. For examples, the gas sensing response of the heterostructures showed a strong dependence on the thickness of the metal oxide shell layers and the type of heterostructures formed. On the other hand, the electrocatalytic performances are strongly related to the surface catalyst/stabilization layer and the electrical conductivity of the heterostructured electrode.On the basis of the morphological, microstructural and electrical characterization, and electrode performances, the mechanisms which account for the performances of our heterostructured electrodes will be correlated and discussed.

Simultaneous Piezoelectrocatalytic Hydrogen-Evolution and Degradation of Water Pollutants By Quartz Microrods@Few-Layered MoS2 Hierarchical Heterostructures

Intense light attenuation in water/wastewater results in photocatalysts exhibiting a low quantum efficiency. This study develops a novel piezoelectrocatalysis system, which involves quartz microrods (MRs) abundantly decorated with active edge-sites MoS2 nanosheets to form quartz microrods@few-layered MoS2 hierarchical heterostructure (QMSH). Through theoretical calculations, quartz MR serves as a parallel-plate capacitor, which is self-powered to provide an internal electric field to the few-layered MoS2 nanosheets surrounding the quartz MR surfaces, and the piezoelectric potential (piezopotential) effectively facilitates redox reactions with the free carrier in MoS2. The self-powered quartz MRs in QMSH present an internal bias to the MoS2 nanosheets, thus yielding a piezoelectrocatalysis system. An efficient piezoelectrocatalytic hydrogen evolution reaction (HER) and decomposition of wastewater without light irradiation could achieve simultaneously. The second-order rate constant of QMSH is approximately 0.631 L mg-1min-1, which was 650-fold that of quartz MRs, indicating that the piezoelectric heterostructural catalysts display exceptionally high efficiency on piezo-electrocatalytic redox reactions rather than in the peizocatalytic process. The H2-production rate of QMSH catalysts approached approximately 6456 μmo1·g−1 h−1 and peaked at approximately 16.8 mmol g−1 in 8 h. The piezoelectrocatalytic process may be a promising method for treating industrial wastewater and producing clean energy.

Electrocatalytic upgrading of polyethylene terephthalate plastic to formic acid at an industrial-scale current density via Ni-MOF@MnCo-OH catalyst

Electrocatalytic polyethylene terephthalate (PET) waste upgrading is crucial for developing a circular plastics economy and solving the energy crisis, but achieving efficient PET upgrading at an industrial-scale current density remains a formidable challenge. In our work, Ni-MOF@MnCo-OH catalyst was prepared by designing hierarchical heterostructure and incorporating the concept of multi-metal sites, wherein the Ni-MOF can be derived from PET plastic. Benefiting from the advantages of material design, the catalyst demonstrates excellent adsorption capabilities for both OHad and ethylene glycol (EG), while also enhancing the electron transfer capability of Ni-MOF. We achieve a high Faradaic efficiency (∼80 %) during PET plastic upgrading at industrial-scale current density (300 mA·cm−2 at 1.43 V vs. RHE) with Ni-MOF@MnCo-OH. Moreover, through theoretical calculations and in situ Fourier transform infrared (FTIR) spectroscopy, we have further elucidated the mechanism of ethylene glycol oxidation reaction (EGOR). Notably, glycolic acid has been identified as a vital intermediate during the electrical oxidation of EG. This work provides a viable and eco-friendly approach to enhance the value of PET waste through sustainable means.

Construction of secondary heterojunction interface between 2D NiCo-LDH and MOF-derived 0D Co@NC for enhanced electromagnetic response

The development of hierarchical heterostructures to enhance the interfacial interactions between substrates and ligands is recognized as an effective approach for optimizing electromagnetic wave (EMW) absorption performance. Nonetheless, the advancement of novel EMW absorbers with ultrathin matching thickness (d < 1 mm), robust reflection loss (RL ≤ -50 dB), and a broad effective absorption bandwidth (EAB, RL ≤ -10 dB) continues to present a formidable challenge. In this work, we have manufactured Co@NC/NiCo-LDH absorbers featuring hierarchical hetero-interfacial structures. This was accomplished using a straightforward hydrothermal method that induced the in-situ growth of 2D NiCo-LDH nanosheet ligands on the surface of 0D Co@NC heterostructured substrates. Both 0D Co@NC heterostructures and 2D NiCo-LDH nanosheets are composed of small nanoparticles, creating many homogeneous and heterogeneous interfaces, and substantially augmenting interfacial polarization loss. The Co@NC/NiCo-LDH hierarchical hetero-interfacial structure demonstrates strong dielectric loss (interfacial polarization, conductive loss, dipolar polarization), magnetic loss (natural resonance and switched resonance), and excellent impedance matching. As a result, the Co@NC/NiCo-LDH heterostructure displays excellent EMW absorption characteristics with reflection loss (RL) values of -55.78 dB and -60.53 dB at matching thicknesses of 0.97 mm and 1.45 mm, respectively. The EAB value can reach 4.36 GHz. Furthermore, the Co@NC/NiCo-LDH absorber demonstrates outstanding radar wave attenuation performance through radar cross-section simulation (RCS). It achieves a maximum RCS reduction value of 30.96 dB m2. This research offers valuable insights into the EMW absorption mechanism of hierarchical hetero-interfacial structures, contributing to a deeper understanding of the design and utilization of multilevel heterostructures.

Interfacial Mo-S bond-reinforced hierarchical S-scheme heterostructure of Bi2MoO6@ZnIn2S4 for highly-selective and efficient CO2 photoreduction into CO

Developing highly-selective and efficient photocatalysts for converting CO2 into carbon-based fuels by solar energy is desirable, whereas it is still a severe challenge. Herein, we present a unique interfacial Mo-S bond-bridged hierarchical S-scheme heterostructured photocatalysts, prepared by in-situ loading ZnIn2S4 nanoflakes (ZIS-NFs) on the Bi2MoO6 porous micro-spheres (BMO-PMs) assembled from numerous nanosheets. The interfacial Mo-S bonds can reinforce the separation and migration of photoinduced charge carriers via the S-scheme mechanism in the BMO@ZIS heterostructure. Besides, its hierarchical heterostructure can improve the visible-light response ability, and afford plenty of active sites so as to benefit the CO2 adsorption and activation. Specifically, the combined results of experiment and density functional theory (DFT) calculations indicate that the fine heterostructure can not only convert the endoergic rate-determining step of bare ZIS (namely, CO2* hydrogenation to form COOH*) to an exoergic reaction process and lower the overall activation energy barrier, but also boost the desorption of CO* from the ZIS surface. As a result, in existence of H2O vapor without any sacrificial agents, the optimum photocatalyst (BMO@ZIS-0.4) manifests the outstanding CO2 photoreduction activity, with a CO yield and selectivity of 23.11 μmol g−1h−1 and 93.1 %, respectively, higher than those of the most reported photocatalysts. This work offers an in-depth insight for fabricating the interfacial chemical bond-modulated hierarchical S-scheme heterostructure with a remarkable performance of CO2 conversion.

Remarkable surface area engineering of nanosheet-assembled hierarchical p-n Ag-loaded NiO-CeO2 heterostructure for superior ethanol sensing performance

The creation of ultra-high surface areas of heterostructures based on p-n NiO-CeO2 hierarchical nanospheres and nanosheet-assembled Ag-loaded p-n NiO-CeO2 is reported, employing a straightforward hydrolysis method. A porous NiO-CeO2 heterostructure was produced by an improved 24 h urea synthesis reaction time, while the addition of Ag nanoparticles reduced the grain size and produced a remarkable surface area of 472 m2 g−1 with a significant number of adsorption sites. For the 1.0 wt% Ag-loaded p-n NiO-CeO2 heterostructure, the optical band decreased from 3.01 to 2.37 eV. Photoluminescence experiments revealed larger surface defects for the 1.0 wt% Ag-loaded NiO-CeO2 heterostructure provided additional evidence for the reduced band. Therefore, compared to its counterparts, the 1.0 wt% Ag-loaded NiO-CeO2 demonstrated superior ethanol sensing, an excellent sensitivity of 0.81 ppm−1, and an ultra-low limit of detection of 1.23 ppb, towards ethanol vapor at 100 °C. The sensing mechanism illustrated that the greater gas-sensing characteristics were associated with the catalytic effect and electronic sensitization of AgO and the engineering of nanosheet-assembled hierarchical heterostructures with an extraordinary specific surface area providing sufficient active sites for the adsorption of ethanol gas, highly porous structures, and an interlayer gap, which accelerated the ethanol diffusion, leading to enhanced sensitivity and response speed of the sensor. Therefore, this study provided a simplistic approach to engineering the nanosheet-assembled hierarchical 1.0 wt% Ag/NiO-CeO2 microspheres with enhanced ethanol sensing performance.

High-performance polyurethane composite elastomers with coral reef-like hierarchical heterostructures for electromagnetic wave absorption and flexible sensing

With the rapid development of electronic technology and the wide application of 5G networks, flexible electronic devices with a single function can't meet the needs of daily life or military fields. Inspired by the structure of coral reefs, a high-performance polyurethane composite elastomer was designed for multifunctional applications, which was enhanced by multi-dimensional coral reef-like hierarchical heterostructures consisting of MXene, carbon nanotubes (CNTs), and Fe3O4via a solvothermal method. The composite elastomer reached a minimum reflection loss (RLmin) of −54.81 dB and worked effectively from −20 to 100 °C, which could meet the needs of year-round electromagnetic protection. Also, it showed a good sensitivity with a high GF value of 608, which could be widely used in flexible sensing and human motion monitoring. More importantly, its thermal diffusion capability was 155.9 % higher than that of pure polyurethane, and it remained stable at 200 °C and was not easy to decompose, showing outstanding thermal transmission and thermal stability. Such a novel functional composite material will provide an effective guidance solution for electromagnetic protection, flexible sensing, and thermal management under complex working conditions.

Rapid charge migration of hierarchical S-Scheme g-C3N4/CdS@C for efficient photocatalytic hydrogen evolution

Photocatalytic H2 evolution as a resultful way to figure out energy problems is still inhibited by carrier separation efficiency and catalyst service life. Here, we report a hierarchical S-Scheme heterostructure of layered graphite carbon nitride and CdS nanoparticles coated with carbon film (g-C3N4/CdS@C) by a simple hydrothermal method for highly efficient visible-light-driven H2 evolution. The S-Scheme, comprising g-C3N4 and CdS, synergistically enhances the efficiency of carrier separation while maintaining the redox capacity of both components. The introduction of carbon film enhances the migration rate of carriers, in the meantime inhibits the photo corrosion of CdS to enhance the stability of catalyst. The g-C3N4/CdS@C achieves the H2 generation rate of 6.4 mmol g−1 h−1 and the apparent quantum yield of 12.7%, superior to most works on g-C3N4. This work provides a delicate S-Scheme photocatalyst and offers a valid strategy for prolonging the lifetime of transition metal sulfide-based materials.

3D flower-like In2Se3/Bi2O2CO3 n-n scheme heterojunctions for visible-driven simultaneous degradation of multi-tetracyclines

ABSTRACT The purification of tetracycline wastewater using visible-light-driven heterojunction catalysts is a promising approach. In this study, a n-n type heterojunction, In2Se3/Bi2O2CO3, is synthesised through a solvothermal method by combining band-matched semiconductors. The resulting hybrid has a 3D hierarchical structure with abundant mesopores, facilitating rapid mass transfer. Notably, 5% In2Se3/Bi2O2CO3 hybrids demonstrate enhanced photocatalytic efficacy for simultaneous degradation of tetracycline hydrochloride (TCH) under visible light, including TCH blends with chlortetracycline (CTC) and oxytetracycline (OTC). This enhancement originates from the heterojunction interface, narrowing the band gap, increasing visible light absorption by Bi2O2CO3 (BOC), and creating an inherent electric field between BOC and In2Se3, separating electron-hole pairs. Mechanistic analysis identifies h+ and •O2 − radicals as primary contributors to the photocatalytic process, suggesting a plausible n-n mechanism. This innovative design shows promise for advancing hierarchical heterostructures in tetracycline removal.

Pursuing ultrastrong and ductile medium entropy alloys via architecting nanoprecipitates-enhanced hierarchical heterostructure

Nanoprecipitate-strengthened medium/high entropy alloys (M/HEAs) with ultrahigh strengths and unusual physical properties represent promising candidates for structural applications. However, further strengthening these materials usually relies on increasing the volume fraction of nanoprecipitates and/or introducing harder intermetallics that inevitably sacrifice the ductility. Here, we report a strategy to break this trade-off in a Co-Cr-Ni-based MEA by architecting a hierarchical heterostructure that integrates high-volume fraction (up to ∼30%) D022-γ’’ nanoprecipitates, shearable and non-shearable intermetallic particles, with a low stacking fault energy (SFE) matrix with heterogeneous grain structure. This hierarchical heterostructure can arouse hybrid strengthening mechanisms and lead to cross-scale and dynamic strain partitioning during plastic deformation, contributing to a superior strain-hardening capability and an excellent combination of the yield / ultimate tensile strength of 1323 MPa / 1690 MPa and 29% tensile elongation. This study provides a promising paradigm to design ultrastrong and ductile metallic materials via controlling multiscale microstructural heterogeneities.

Spontaneous hierarchical surface engineering of minerals through coupled dissolution‐precipitation chemistry

AbstractPeculiar hierarchical microstructures in creatures inspire modern material design with distinct functionalities. Creatures can effortlessly construct sophisticated yet long‐range ordered microstructure across bio‐membrane through ion secretion and precipitation. However, microstructure biomimicry in current technology generally requires elaborate, point‐by‐point fabrication. Herein, a spontaneous yet controllable strategy is developed to achieve surface microstructure engineering through a natural surface phenomenon similar to ion secretion‐precipitation, that is, coupled dissolution‐precipitation. A series of hierarchical microstructures on mineral surfaces in fluids with tunable morphology, orientation, dimension, and spatial distribution are achieved by simply controlling initial dissolution and fluid chemistry. In seawater, long‐range ordered film of vertically aligned brucite flakes forms through interfacial dissolution, nucleation, and confinement‐induced orientation of flakes with vertically grown {110} plane, on the edge of which, fusiform aragonite epitaxially precipitates. With negligible initial surface dissolution, prismatic aragonite epitaxially grows on a calcite polyhedron‐packed surface. By tuning fluid chemistry, closely packed calcite polyhedron and loosely packed calcite micro‐pillars are engineered through rapid and retarded precipitation, respectively. Surprisingly, the spontaneously grown microstructures resemble those deliberately created by human or found in nature, and tremendously modulate surface functionality. These findings open new possibilities for facile and customizable engineering of microstructural surfaces, hierarchical heterostructures, and biomimetic materials.

Unveiling an S-scheme F–Co3O4@Bi2WO6 heterojunction for robust water purification

Devising a desirable nano-heterostructured photoelectrode based on the charge transfer kinetics mechanism is a pivotal strategy for implementing efficient photoelectrocatalytic (PEC) technology, since the charge separation and utilization efficiency of a photoelectrode is critical to its PEC performance. Herein, we fabricate a F–Co3O4@Bi2WO6 core–shell hetero-array photoanode by coupling Bi2WO6 nanosheets with F–Co3O4 nanowires using a simple solvothermal solution method. The three-dimensional hierarchical heterostructure has a homogeneous chemical interface, helping it to promote an S-scheme-based carrier transport kinetics and maintain excellent cycling stability. Charge density difference calculations verify the electron migration trend from F–Co3O4 to Bi2WO6 upon hybridization and the formation of an internal electric field in the heterojunction, consistent with the S-scheme mechanism, which is identified by in situ irradiation X-ray photoelectron spectroscopy and by ultraviolet photoelectron spectroscopy. The optimized F–Co3O4@Bi2WO6-2 photoelectrode achieves high carrier utilization efficiency and exhibits superior PEC degradation performance for various organic pollutants, including reactive brilliant blue KN-R, rhodamine B, sulfamethoxazole, and bisphenol A. This work not only reveals that F–Co3O4@Bi2WO6-2 is effective for PEC water remediation but also provides a strategy to enhance carrier transport kinetics by designing binary oxides.