BaTiO3 Nanoparticles Research Articles

Self-polarization-enhanced oxygen evolution reaction by flower-like core–shell BaTiO3@NiFe-layered double hydroxide heterojunctions

A flower-like core–shell heterostructured oxygen evolution reaction (OER) electrocatalyst based on tetragonal BaTiO3 nanoparticles (t-BTO NPs) and NiFe-layered double hydroxide (NiFe-LDH) nanoarrays was prepared in this study. The influence from the self-polarization effect of t-BTO on the OER performance of NiFe-LDH is reported. Intriguingly, the OER activity of the t-BTO@NiFe-LDH heterojunctions in an alkaline media (1.0 M KOH) exhibited a low overpotential of 186 mV at 10 mA/cm2 and a low Tafel slope of 38.3 mV dec-1, which were far superior to those of the component materials: NiFe-LDH (267 mV and 94.8 mV dec-1) and t-BTO NPs (517 mV and 132.4 mV dec-1). Density functional theory (DFT) calculations revealed that the effective electronic modulation between t-BTO NPs and NiFe-LDH nanoplatelets narrowed the bandgap, promoted the electric conductivity, moderately raised Ed (i.e., energy level of the d-band center), optimized the adsorption ability of the oxygen-containing intermediates (*O, *OH, and *OOH), and induced an apparent reduction in the free energy barrier for the transformation from O* to OOH* in the t-BTO@NiFe-LDH heterojunctions. The PDOS result confirmed that t-BTO in the heterojunctions was easier to polarize, which can cause the rapid electron transfer in the OER process. In these heterostructures, the interface tension between BTO NPs and NiFe-LDH endowed BTO with easier self-polarization, thus leading to greater band tilting and faster electron transfer. Multiple synergistic effects of the flower-like core–shell t-BTO@NiFe-LDH heterojunctions enabled them with higher electrocatalytic activity. This work provides an in-depth understanding of the rational design of a high-efficiency, noble metal-free ferroelectric OER electrocatalyst based on the self-polarization of t-BTO NPs.

Effects of heat treatment on the dielectric and energy storage properties of BT‐PVDF nanocomposite films

AbstractCeramic‐polymer nanocomposites exhibit good dielectric constant, low dielectric loss and excellent storage capacity for energy. A spin‐coating method was used to create 30 vol% BaTiO3 (BT) nanoparticles and polyvinylidene fluoride (PVDF) nanocomposite films with a homogeneous thickness of around 7 μm. The findings indicated that, with increasing the quenching temperature, the dielectric constant of the nanocomposite films decreased at 100 Hz. The dielectric constant of the BT‐PVDF nanocomposite film was 75.4 after quenched in air at 100°C, which was 21.4% greater than the that of the unquenched film. The breakdown strength of the films increased with increasing quenching temperature and reached the maximum values of 1400 kV/cm and 1600 kV/cm at 160°C, respectively. The breakdown strength of the film quenched in liquid nitrogen reached a maximum of 1600 kV/cm at 140°C. With increasing of quenching temperature, the charging density of BT‐PVDF nanocomposite film increased first and then decreases, reaching the maximum value of 11.165 J/cm3 at 140°C, which was 146% higher than that of the unquenched film. Heat treatment will be an innovative method for improving the dielectric and energy‐storage capabilities of ceramic‐polymer nanocomposite films.Highlights The uniform thickness of the film prepared by spin‐coating was about 7 μm. The dielectric properties of the composite film after quenching processes were improved. The breakdown voltage and charging density were vastly enhanced after quenching processes.

Piezo-Photocatalytic Degradation of Tetracycline by 3D BaTiO3 Nanomaterials: The Effect of Crystal Structure and Catalyst Loadings

Piezoelectric photocatalysis improves catalytic activity by preventing photogenerated carrier recombination. Hence, three morphologies of BaTiO3 (BTO) were successfully prepared for the piezoelectric photocatalytic degradation of tetracycline (TC, C(TC) = 40 mg/L). The tetragonal-phase BaTiO3 nanoparticles (BTO-NPs) showed the best performance in comparison with cubic-phase nanoflowers (BTO-Nf) and cubic-phase coral-like structures (BTO-Nc) under the same conditions (C(BTO) = 0.6 g/L). When the loading of BTO-NPs was reduced to 0.2 g/L, the photocatalytic degradation efficiency was lowered from 64.2% to 50.1%. However, the 0.6 g/L BTO-NPs increased by only 12.8% after piezoelectricity induction. On the contrary, the BTO-NPs’ degradation effect of 0.2 g/L with the piezoelectric effect was greatly improved from 50.1% to 78.0%, with an increase rate of 27.9%. As the quantity of catalyst was decreased, the increased inter-particle voids made the lattice more susceptible to deformation by external forces, producing a more pronounced piezoelectric effect. These findings indicate that crystal structure and catalyst loading are critical factors in increasing piezoelectric photocatalytic performance. This article emphasizes the application value of piezoelectric photocatalysis in degrading organic pollutants, and provides practical guidelines for optimizing its performance.

Electric field enhancement for triboelectrification-induced electroluminescence via micro electrode units and BaTiO3 nanoparticles

Intelligent terminals demand motion sensors with high intensity and low energy consumption. Motion sensors relied on the conversion of mechanical signals into electrical signals usually need complex electric circuits. Alternatively, novel motion sensors that can convert mechanical signals into optical signals represent an intuitive way of motion sensing. Here, a high-intensity luminescent composite film is proposed with utilization of micro electrode units and high dielectric BaTiO3 nanoparticles aiming at electric field enhancement for the electroluminescence process of triboelectrification-induced electroluminescence (TIEL). It is found that the existing of electrode units would effectively enhance the produced electric field along the edge of the electrode units and thus promote the luminescent intensity. Besides, the BaTiO3 nanoparticles would elevate the dielectric constant of the luminescent composite film and a proper ratio of BaTiO3 would significantly improve the luminescent intensity. The dielectric constant of the luminescent layer would rise as the driving frequency decreases, which indicates its suitability for low frequency mechanical movement sensing. Visualized motion sensing with high intensity and excellent stability thereby can be stimulated under ultra-low pressure and low frequency mechanical movement. Hand motion and water flow can be real-timely tracked via luminescent composite films with micro electrode arrays, demonstrating its great potential in self-powered motion sensors for the broad applications in biometrics, liquid sensing, anti-counterfeiting identification, surveillance and many others.

Exceptional tribo-catalytic degradation of concentrated methyl orange and methylene blue solutions by DXN-RT30 TiO2 nanoparticles

As tribo-catalysis gains increasing attention to harness mechanical energy for environmental remediation, it is time to explore its application to those organic pollutants that have been challenging to degrade. In this study, four commercial metal oxide nanoparticles, BaTiO3, ZnO, P25 TiO2, and DXN-RT30 TiO2 nanoparticles, were stimulated through magnetic stirring to degrade 20 mg/L methyl orange (MO) and 30 mg/L methylene blue (MB) solutions. While all the other nanoparticles showed rather poor performance, DXN-RT30 TiO2 nanoparticles performed exceptionally well: With Teflon magnetic disks rotating at 400 rpm, 98.2% of MO and 100% of MB were degraded within 330 and 420 min, respectively. DXN-RT30 TiO2 nanoparticles demonstrated a unique absorption for MB molecules, yielding significantly different outcomes in active species trapping experiments between degradation of MO and MB solutions by DXN-RT30 TiO2. Complemented by electron paramagnetic resonance analysis, our findings suggest that for DXN-RT30 TiO2 nanoparticles under magnetic stirring, MO molecules are degraded by h+, ·OH, and e− in solution, while MB molecules are absorbed and degraded via h+ and e− on the surface of DXN-RT30 TiO2 nanoparticles. This study identifies DXN-RT30 TiO2 nanoparticles as a cost-effective, high-performance, and environmentally friendly tribo-catalyst for environmental remediation, stimulating further exploration for more excellent tribo-catalysts.

Size effects of polydopamine-coated BaTiO3 nanoparticles on the piezoelectric performance of P(VDF-TrFE)/BaTiO3 composite

The size effect of the polydopamine (PDA)-coated BaTiO3 (BTO) (BTO@PDA) nanoparticles (NPs) on the interfacial compatibility between BTO NPs and the polymer matrix and the resultant piezoelectric performance of the composite films remain elusive. In this study, BTO and BTO@PDA NPs of various sizes were incorporated into a P(VDF-TrFE) matrix to prepare two series of P(VDF-TrFE)/BTO and P(VDF-TrFE)/BTO@PDA composites. Subsequently, the effects of the NP size on the dielectric, ferroelectric, and piezoelectric properties of the composite films were comprehensively studied. As the size of the BTO@PDA NPs increased, residual hole defects were clearly observed in the cross section of the composite film. The deteriorated interfacial compatibility due to the large size of the BTO@PDA NPs was also confirmed by the increased dielectric permittivity of the composite film, which was induced by the intensified interfacial polarisation. The P(VDF-TrFE)/BTO@PDA composite with NPs of the smallest size (100 nm) exhibited superior piezoelectric performance owing to the excellent interfacial compatibility between the fillers and the matrix. The piezoelectric performance was significantly enhanced by the reduced leakage current during electrical poling and reduced trap charges. Finally, the pulse waveform originating from the radial artery was precisely measured using the optimised P(VDF-TrFE)/BTO@PDA composite film.

Effect of nanoparticles on piezoelectric response in polymer composites by quantitative evaluation

The effect of the intrinsic properties of silicone rubber and barium titanate (BaTiO3) nanoparticles on the piezoelectric properties of BaTiO3/silicon rubber composites was studied by the finite element analysis. The data of the simulation show that the stress and voltage of the composite were greatly increased when the concentration of the BaTiO3 nanoparticle increased from 5 to 30 vol. %. As Young’s modulus of silicone rubber increased from 5 to 20 MPa, the compressive stress of the composites raised linearly. With the Poisson’s ratio rising from 0.41 to 0.49, the compressive stress increased by 0.18 MPa in the process. When the dielectric constant of the BaTiO3/silicon rubber composite was less than 30, the potential difference of the piezoelectric film gradually raised with the dielectric constant increasing. When the dielectric constant of the composite was higher than 30, the output voltage of the composite gradually decreased. Therefore, the lower Young’s modulus and Poisson’s ratio of the silicone rubber composite is beneficial to improve the piezoelectric properties of the composite. This article will provide a reference for designing the preparation of spherical BaTiO3 composite materials.

Water-Mediated Conversion of BaTiO3 Nanoparticles into BaCO3 Nanorods in Electrospun Polymer Fibers: Implications for Carbon Capture Applications.

Under ambient conditions and in aqueous environments, transformations of nanoparticle-based ferroelectric components can raise important stability issues that are relevant for applications as multilayer capacitors, flexible piezoelectrics, or biomedical devices. We show that X-ray amorphous BaTiO3 nanoparticles that were grown by flame spray pyrolysis and which can be incorporated into electrospun polymer fibers undergo incongruent Ba2+ dissolution in the presence of water. At pH > 5 and in contact with air, corresponding Ba solutes spontaneously convert into crystalline BaCO3 needles to produce characteristic nano- and microstructures. We compared the reactivity of amorphous BaTiO3 nanoparticle powders with those of nanocrystals after annealing-induced crystallization. The stability of aqueous nanoparticle-polymer formulations, which are typically part of nanoparticle encapsulation in polymers and electrospinning, was included in this analysis. Nanoparticle size, crystallinity, surface area, the presence of carbonaceous surface contaminants, and the effect of surface passivation with polymers are addressed to underline the critical role of condensed water during the synthesis, storage, and processing of BaTiO3 nanoparticle-based composites.

Biomass aerogel composite containing BaTiO3 nanoparticles and MXene for highly sensitive self-powered sensor and photothermal antibacterial applications

Biomass aerogel materials are increasingly attracting researchers’ attention because of good biocompatibility of biomass materials and multiple functional features of aerogel materials. Herein, novel biomass aerogel composite was fabricated by doping hydroxylated barium titanate (BT-OH) nanoparticles and MXene in chitosan/bacterial cellulose (CB) aerogel by simple methods containing chemical modification, physical mixture and lyophilization. The novel aerogel composite named CB/BT-OH/MXene showed favorable piezoelectric properties and excellent photothermal antibacterial properties. The aerogel composite-based piezoelectric sensor displayed short response time (0.4 s), high response sensitivity (800 mV/N), and long cycle stability (over 1000 cycles), which could monitor various body movements, including fingers bending, speaking, wrist bending, elbow bending, smiling, and walking. Moreover, the aerogel composite possessed satisfactory photothermal conversion ability, which could reach 55 ℃ by 10 s of near-infrared irradiation (808 nm, 0.2 W/cm2), successfully achieving complete sterilization effect towards S. aureus and E. coli. The novel biomass aerogel composite may find its potential applications in wearable or implantable self-powered sensors with satisfactory antibacterial performance.

Exploration the effect of doping (BaTiO3) on optical properties of Polymer (PVP)

In this paper, composites of polyvinyl pyrrolidone (PVP) reinforced with different Barium Titanate (BaTiO3) loadings (0, 2,4, and 6) wt. % were obtained via the solution casting method. The optical properties have been investigated. The increase in BaTiO3 nanoparticles ratio in the PVP lead to increase in absorbance and decrease in transmittance. The (PVP/ BaTiO3) nanocomposite exhibited a reduction in energy gap from 3.68 eV for pure PVP to 3.5 eV for allowed indirect transition and from 3.63 eV to 3.48 eV for forbidden indirect transition, upon the incorporation of (BaTiO3) nanoparticles at a concentration of 6 wt.%. The weight percentages of BaTiO3 nanoparticles exhibit a positive correlation with their absorbing factor, extinction factor, index of refraction, real and imaginary components of dielectric constants, and optical conductivity. The results confirm that (PVP/ BaTiO3) films nanocomposites have excellent optical properties, which may encourage the application of these composites in different optoelectronic utilization

Engineering Sub-Nanometer Hafnia-Based Ferroelectrics to Break the Scaling Relation for High-Efficiency Piezocatalytic Water Splitting.

Reversible control of ferroelectric polarization is essential to overcome the heterocatalytic kinetic limitation. This can be achieved by creating a surface with switchable electron density; however, owing to the rigidity of traditional ferroelectric oxides, achieving polarization reversal in piezocatalytic processes remains challenging. Herein, sub-nanometer-sized Hf0.5 Zr0.5 O2 (HZO) nanowires with a polymer-like flexibility are synthesized. Oxygen K-edge X-ray absorption spectroscopy and negative spherical aberration-corrected transmission electron microscopy reveal an orthorhombic (Pca21 ) ferroelectric phase of the HZO sub-nanometer wires (SNWs). The ferroelectric polarization of the flexible HZO SNWs can be easily switched by slight external vibration, resulting in dynamic modulation of the binding energy of adsorbates and thus breaking the "scaling relationship" during piezocatalysis. Consequently, the as-synthesized ultrathin HZO nanowires display superb water-splitting activity, with H2 production rate of 25687µmolg-1 h-1 under 40kHz ultrasonic vibration, which is 235and 41times higher than those of non-ferroelectric hafnium oxides and rigid BaTiO3 nanoparticles, respectively. More strikingly, the hydrogen production rates can reach 5.2µmolg-1 h-1 by addition of stirring exclusively.

β-Phase Enhancement of Force Spun Composite Nanofibers for Sensing Applications.

In this study, a piezoelectric harvesting device was developed using polyvinylidene fluoride (PVDF) nanofibers reinforced with either BaTiO3 nanoparticles or graphene powder. BaTiO3 nanoparticles were synthesized through the sol-gel method with an average size of approximately 32 nm. The PVDF nanofibers, along with the nanoparticle composites in an acetone-N,N-dimethylformamide mixture, were produced using a centrifugal Forcespinning™ machine, resulting in a heterogeneous arrangement of fiber meshes, with an average diameter of 1.6 μm. Experimental tests revealed that the electrical performance of the fabricated harvester reached a maximum value of 35.8 Voc, demonstrating the potential of BaTiO3/ PVDF-based piezoelectric devices for designing wearable applications such as body-sensing and energy-harvesting devices.

The effect of silica addition on dielectric properties of barium titanate nanoparticles

The effect of silicon dioxide (SiO2) nanoparticles on the dielectric constant was studied. Different weight percentages of silica (3, 5, and 7 %) were added to BaTiO3 nanoparticles. The structure, morphology, and dielectric properties were obtained using X-ray diffraction (XRD) and scanning electron microscopy (SEM), and an LCR meter. The diffraction patterns were shown that the crystallite size of BaTiO3 increased with the addition of SiO2. The dielectric constant and the dielectric loss were measured with various temperatures ranging from 27 to 180 °C at a constant frequency of 10 kHz. It was found that the value of the dielectric constant for the pure BaTiO3 is the highest at the Curie temperature (128 °C). The Curie temperature shifted to a higher value and the dielectric constant was decreased when the silica was added to BaTiO3. Moreover, with increasing the silica percentage, the variation in the dielectric loss values with the temperature was observed.

Impact of stirring regime on piezocatalytic dye degradation using BaTiO3 nanoparticles

There is increasing demand to use readily accessible waste energy to drive environmentally friendly processes. Piezocatalysis, the process of converting mechanical energy such as vibration into a chemical process, is a breakthrough next generation approach to meet this challenge. However, these systems currently focus on using ultrasound to drive the chemical reaction and are therefore expensive to operate. We show that by using simple mechanical stirring and BaTiO3 particles we can remove Rhodamine B dye molecules from solution. After evaluating a range of stirring parameters, we demonstrate that there is an interplay between stirring speed, volume of liquid, catalyst structure and rate of dye removal. Our maximum degradation rate was 12.05 mg. g−1 catalyst after 1 h of mechanical stirring at favourable conditions. This development provides a new insight into a low energy physical technique that can be used in environmental remediation processes.

Enhanced photoresponse and efficient charge transfer in porous graphene-BaTiO3 nanocomposite for high performance photocatalysis

Porous graphene-BaTiO3 (PGBT) nanocomposite was synthesized by a simple one pot solvothermal method and its photocatalytic activity was evaluated by studying its efficiency in degrading methylene blue (MB) dye under visible light. The combination of experimental and theoretical analysis revealed enhanced photocatalytic activity of the PGBT composite, which could be attributed to (i) the interaction of BaTiO3 nanoparticles with PG sheets via BaC bond, (ii) reduced band gap due to the introduction of hybridized states leading to increased absorption in visible range and (iii) large surface area which provides more active sites for the efficient adsorption of MB dye. The formation of BaC bond proved to be highly advantageous for the efficient transport of photogenerated charge carriers, thereby suppressing the recombination of charge carriers. The synthesized nanocomposite showed three times higher photodegradation efficiency compared to BaTiO3. In addition to this, the composite also showed an excellent cyclic stability indicating its suitability as an effective photocatalyst for the environmental remediation.

Design and optimization of Miura-Origami-inspired structure for high-performance self-charging hybrid nanogenerator

A hybrid piezoelectric-triboelectric-electromagnetic nanogenerator (HPTENG-EMG) has been designed meticulously by focusing on material selection, structural design, and performance evaluation. The module can operate using three parts; piezoelectric, triboelectric and an electromagnetic mechanism. The hybrid concept of triboelectric and piezoelectric is achieved by fabricating triboelectric-piezoelectric composite materials working through the TENG mechanism. In the material design part, the composite film between bacterial cellulose (BC) and BaTiO3 nanoparticles (BT-NPs) fabricates and optimizes its properties with a suitable number of BT-NPs. The unique Miura-Origami (MO) hexagonal multilayer shape is applied within the structural design to increase the contact surface area, which enhances the electrical output signal. The third part of the hybrid system incorporates an electromagnetic generator (EMG) by designing a structure of compact and lightweight cylindrical tubes with magnetic levitation structures. The hexagonal multilayer shape of MO composite TENG (MO-CTENG) generates an open-circuit output voltage (VOC) of ∼414 V and short-circuit output current (ISC) of ∼48.3 μA with maximum output power (P) of about ∼6.94 mW. The highest ISC value of ∼38 mA can be promoted in the optimized EMG, which is higher than the MO-CTENG by ∼786 times. The practical application of this technology is demonstrated by human shaking motion for battery charging in the wireless Global Positioning System (GPS). The maximum direct current output voltage (VDC) saturation of 30 V can be achieved within 19 s. This work provides a potential methodology for increasing electrical output performance by capturing more mechanical energy through the conjunction of three phenomena into a single device, which exhibits a promising way of addressing an energy crisis.

Enhancing Ultrasound-Assisted Iodine-Mediated Reversible-Deactivation Radical Polymerization by Piezoelectric Nanoparticles.

The development of mechanochemical tools for regulating the polymerization process has received an increasing amount of attention in recent years. Herein, we report the example of the mechanically controlled iodine-mediated reversible-deactivation radical polymerization (mechano-RDRP) using piezoelectric tetragonal BaTiO3 nanoparticles (T-BTO) as mechanoredox catalyst and alkyl iodide as the initiator. We demonstrated a more efficient mechanochemical initiation and reversible deactivation process than sonochemical activation via a mechanoredox-mediated alkyl iodide cleavage reaction. The mechanochemical activation of the C-I bond was verified by density functional theory (DFT) calculations. Theoretical calculations together with experimental results confirmed the more efficient initiation and polymerization than the traditional sonochemical approach. The influence of BaTiO3, initiator, and solvent was further examined to reveal the mechanism of the mechano-RDRP. The results showed good controllability over molecular weight and capacity for a one-pot chain extension. This work expands the scope of mechanically controlled polymerization and shows good potential in the construction of adaptive materials.

Significant photocatalytic decomposition of malachite green dye in aqueous solutions utilizing facilely synthesized barium titanate nanoparticles

The release of malachite green dye into water sources has detrimental effects on the liver, kidneys, and respiratory system. Additionally, this dye can impede photosynthesis and disrupt the growth and development of plants. As a result, in this study, barium titanate nanoparticles (BaTiO3) were facilely synthesized using the Pechini sol–gel method at 600 °C (abbreviated as EA600) and 800 °C (abbreviated as EA800) for the efficient removal of malachite green dye from aqueous media. The Pechini sol–gel method plays a crucial role in the production of barium titanate nanoparticles due to its simplicity and ability to precisely control the crystallite size. The synthesized barium titanate nanoparticles were characterized by several instruments, such as X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM), Fourier transform infrared spectroscopy, and a diffuse reflectance spectrophotometer. The XRD analysis confirmed that the mean crystallite size of the EA600 and EA800 samples is 14.83 and 22.27 nm, respectively. Furthermore, the HR-TEM images confirmed that the EA600 and EA800 samples exhibit irregular and polyhedral structures, with mean diameters of 45.19 and 72.83 nm, respectively. Additionally, the synthesized barium titanate nanoparticles were utilized as catalysts for the effective photocatalytic decomposition of malachite green dye in aqueous media. About 99.27 and 93.94% of 100 mL of 25 mg/L malachite green dye solution were decomposed using 0.05 g of the EA600 and EA800 nanoparticles within 80 min, respectively. The effectiveness of synthesized BaTiO3 nanoparticles as catalysts stems from their unique characteristics, including small crystallite sizes, a low rate of hole/electron recombination owing to ferroelectric properties, high chemical stability, and the ability to be regenerated and reused multiple times without any loss in efficiency.

Nanoparticulate Perovskites for Photocatalytic Water Reduction.

SrTiO3 and BaTiO3 nanoparticles (NPs) were activated using H2O2 or aqueous HNO3, and pristine and activated NPs were functionalized with a 2,2'-bipyridine phosphonic acid anchoring ligand (1), followed by reaction with RuCl3.3H2O and bpy, RhCl3.3H2O and bpy, or RuCl3.3H2O. The surface-bound metal complex functionalized NPs were used for the photogeneration of H2 from water, and their activity was compared to related systems using TiO2 NPs. The role of pH during surface complexation was found to be important. The NPs were characterized using Fourier transform infrared (FTIR) and solid-state absorption spectroscopies, thermogravimetric analysis mass spectrometry (TGA-MS), and matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS), and the dihydrogen generation was analyzed using gas chromatography-mass spectrometry (GC-MS). Our findings indicate that extensively functionalized SrTiO3 or BaTiO3 NPs may perform better than TiO2 NPs for water reduction.

Photocatalytic dye degradation by BaTiO3/zeolitic imidazolate framework composite

Chemical dyes present in wastewater generated from textile and paint industries can cause serious environmental and health hazards if not adequately treated. Photocatalytic degradation, an eco-friendly water treatment method, utilizes charge carriers generated from sunlight to remove pollutants in water without requiring additional energy input. Since the interaction between polluted water and a catalyst is crucial in water treatment, an emerging technology involves the combination of porous materials and light-sensitive materials. In this study, BaTiO3 nanoparticles are loaded into a Zeolitic Imidazolate Framework (ZIF-8) to create BaTiO3 @ZIF-8 nanocomposites for the photocatalytic degradation of methylene blue (MB) under solar irradiation. To facilitate the smooth transfer of charge carriers between BaTiO3 and ZIF-8, ZIF-8 has been synthesized in the presence of BaTiO3, allowing ZIF-8 to grow on the surface of BaTiO3. The concentration of BaTiO3 is adjusted during synthesis to optimize the photocatalytic performance. Among the different compositions, 25 wt% BaTiO3 @ZIF-8 demonstrates the highest photocatalytic activity. This composite efficiently degrades 93 % of MB dye in 180 min and completely degrades the Congo Red dye in just 75 min under solar irradiation. Furthermore, the photocatalyst exhibits good cyclability over four cycles, maintaining its excellent performance. These results suggest that the current study contributes to the synthesis of highly effective photocatalysts for the breakdown of dyes in aqueous media under sunlight exposure.