Photocatalytic Activity For Decomposition Research Articles

Enhanced Biocidal Activity of Heterophase Zinc Oxide/Silver Nanoparticles Contained within Painted Surfaces

Today, one of the biggest challenges is infections in the painted walls of hospitals. Acrylic-based paints are a target of antibiotic-resistant microorganisms since they contain cellulosic compounds as thickeners. The aim of this study was to synthesize and investigate the biocidal activity and toxicity of heterophase ZnO-Ag nanoparticles fixed in water-based acrylic paint layers in reference to a nontreated water-based paint. The ZnO-Ag nanoparticles with average particle sizes of about 80 nm were simply obtained by electrical explosion of two twisted wires in an oxygen-containing atmosphere. The nanoparticles and modified paint were characterized using SEM, TEM, XPS, and XRD techniques. The antimicrobial activity of the nanoparticles and modified paint layers was tested against P. aeruginosa, S. aureus, MRSA, E. coli bacteria, and C. albicans using ISO 22196. The antiviral activity against smallpox virus was tested according to ISO 21702. Flow cytometry tests were used to investigate the toxicity of the modified paint coating. As-synthesized nanoparticles had “Janus-like” morphology, with a clear interface inside the nanoparticle. Nanoparticles had enhanced antibacterial activity, which is based on the nanoparticle photocatalytic activity in water decomposition and reactive oxygen species generation. The paint coating with a ZnO-Ag nanoparticle mass ratio of 1.0 wt.% displayed significant antibacterial activity (more than a 99% reduction) and 100% antifungal activity. In addition, this coating inactivates >99% of the virus after 2 h of contact relative to a nontreated control paint. The paint coating showed low toxicity against the sensitive 3T3 fibroblast cell line. More than 90% cell viability was observed after 24 h of incubation with the sample extract. Therefore, heterophase ZnO-Ag nanoparticles have high biocidal activity and low toxicity use and can be applied to other commercial water-based paints to improve their performance against pathogens.

Carbon Quantum Dots/Cu2O Photocatalyst for Room Temperature Selective Oxidation of Benzyl Alcohol.

The luminescence properties and excellent carrier transfer ability of carbon quantum dots (CQDs) have attracted much attention in the field of photocatalysis. In this work, we loaded the CQDs on the surface of Cu2O to enhance the visible-light property of Cu2O. Furthermore, the composite was used for selective oxidation of benzyl alcohol to benzaldehyde. The composite catalyst achieved high selectivity (90%) for benzaldehyde at room temperature, leveraging its visible-light-induced electron transfer properties and its photocatalytic activity for hydrogen peroxide decomposition. ·OH was shown to be the main reactive oxygen species in the selective oxidation reaction of benzyl alcohol. The formation of heterostructures of CQDs/Cu2O promoted charge carrier separation and provided a fast channel for photoinduced electron transfer. This novel material exhibited enhanced levels of activity and stability for selective oxidation of benzyl alcohol. Potential applications of carbon quantum dot composites in conventional alcohol oxidation reactions are shown.

Nature-Inspired Pyrylium Cation-Based Vinylene-Linked Two-Dimensional Covalent Organic Framework for Efficient Sunlight-Driven Water Purification

Sunlight-driven photocatalytic water purification for the removal of persistent organic compounds and microorganisms has been widely regarded as a promising technology due to the low energy consumption and environmental friendliness; however, it calls for efficient and sustainable photocatalysts. Pyrylium cation is a photoactive component of many naturally occurring dyes in fruits, flowers, and leaves. Herein, we report the synthesis of a novel pyrylium cation contained vinylene-linked two-dimensional covalent organic framework (v-2D-COF-O1) via aldol-type polycondensation. The resultant v-2D-COF-O1 has a narrow band gap (1.15 eV) and wide-range light absorption up to ∼920 nm. More importantly, the v-2D-COF-O1 can activate molecular oxygen to generate highly reactive oxygen species including superoxide (•O2–) and hydroxyl radicals (•OH) under simulated sunlight (AM 1.5 G), which leads to remarkable photocatalytic activities in both organic waste decomposition and water disinfection. These results suggest the potential of v-2D-COFs as high-performance photocatalysts for water purification.

Synchronized surface oxygen states and electron-hole passage in microwave-assisted tungsten oxide for photocatalytic organic decomposition and antibacterial activity

The present study focuses on controlling the composition of microwave-fabricated tungsten oxide (WO3) nanoparticles through annealing at 500 °C. The significance of annealing on the surface oxygen states and the photocatalytic performance of WO3 nanoparticles were systematically investigated for the removal of organic pollutants and bacteria. The optimum photocatalyst, microwave-assisted WO3 which was successively annealed for 6 h and Pt-loaded (Pt/WO3-M-6 h) demonstrated high photocatalytic performances in inactivation (99 %) against E. coli and S. aureus as well as in degradations of Orange II dye (93 %) and BPA (99 %) under one sun illumination for 180 min. The integration of WO3-M-6 having a moderate amount of surface oxygen defects and Pt loading could provide the most favorable environment in charge transfer by reducing the electron-hole recombination and as an electron collector, respectively. Detailed mechanisms have been proposed for the photocatalytic decomposition of organic pollutants and the photocatalytic disinfection of waterborne bacteria.

Synthesis of tetracarboxy phthalocyanines modified TiO2 nanocomposite photocatalysts and investigation of photocatalytic decomposition of organic pollutant methylene blue under visible light

The current work reports on the synthesis and characterization of peripherally tetra-4- carboxyethylenephenoxy substituted Zn(II) (4), Co(II) (5), Cu(II) (6) and TiO(IV) (7) phthalocyanine complexes and phthalocyanines (4-7)-TiO2 photocatalysts consisting of pure TiO2 and the phthalcyanine complexes. The prepared phthalocyanine complexes were characterized via Fouirer Transform Infrared (FTIR), Ultraviolet–Visible (UV–VIS), Proton Nuclear Magnetic Resonance (1H-NMR), elemental analysis and Matrix-Assisted Laser Desorption/Ionization Time-of- Flight Mass Spectrometry (MALDI-TOF MS). Also, phthalocyanines modified TiO2 nanocomposites were synthesized via a hydrothermal method and characterized by Field Emission Gun Scanning Electron Microscope (FEG-SEM), X-ray Powder Diffraction (XRD), Ultraviolet–Diffuse Reflectance Spectroscopy (UV–DRS), Energy dispersive X-ray (EDX), FT-IR and Brunauer–Emmett–Teller (BET) techniques. The modified TiO2 photocatalysts were used for the decomposition of methylene blue (MB) dyestuff under visible light monitored by UV–VIS spectrophotometry. The photocatalysts enhanced activity for the decomposition of MB compared to pure TiO2, which is attributed to photosensitizer phthalocyanine anchored onto TiO2. The photocatalyst containing ZnPc and CoPc exhibited the highest photocatalytic decomposition activity of MB, which was completed in 110 min. Moreover, the reusability applications revealed that protect about 82% of the activity in 3 recycles.

Co-doped 3D petal-like ZnIn2S4/GaN heterostructures for efficient removal of chlortetracycline residue from real pharmaceutical wastewater

It is of utmost priority to remedy environmental pollution caused by antibiotics contamination through visible-light driven catalysts. However, exploring of photocatalysts simultaneous with properties of strong visible-light harvesting ability, superior efficiency and long-term stability, is stilla tremendous challenge in the field of photocatalysis. Herein, using Gallium nitride (GaN) as a promising wide-band-gap support material, a new Co-doped 3D petal-like ZnIn2S4/GaN heterostructure is successfully constructed by combining hydrothermal and metal organic chemical vapour deposition (MOCVD) methods for the first time. The optimized 3Co/0.3ZnIn2S4/GaN photocatalyst demonstrates remarkably increased photocatalytic activity for chlortetracycline decomposition in various aqueous solutions with long-term stability under visible-light illumination. Its elimination rates in deionized water, tap water and real pharmaceutical wastewater are 81%, 85% and 72%, respectively. It is almost 5 times higher than that of pristine GaN in deionized water. The results of the experiments evidenced that the dramatically increased photocatalytic capability is due to the synergetic co-effects of incorporating band gap match-able ZnIn2S4 and co-catalytic role of Co-doping. This facilitated photo-excited electron-hole pairs separation and transport due to the direct formation of heterojunction with type-II charge transfer mechanism. Furthermore, two possible degradation pathways are deduced from the ultra-performance liquid chromatography mass spectrometry (UPLC-MS) analysis combined with the density functional theory computation of frontier electron densities. This research gives a typical example of the rational design and fabrication of highly efficient GaN-based photocatalysts towards the practical treatment of antibiotic contaminated wastewater.

A novel understanding of morphological anisotropy features of nanorod units in brookite dominated triphase mesoporous TiO2 and its excellent photocatalytic activity in phenol decomposition: The role of synthesis pH and surface hydroxylation

Four different photocatalysts were synthesised using brookite enriched but mixed-phase mesoporous titania using the solvothermal technique. The synthesis pH was optimised within 1.0–5.5 during the sample preparation. The present work is the first of its kind that explores the role of synthesis pH on morphological evolution and crystallographic coherence of the synthesised mixed-phase TiO2. Observations reveal that the synthesis pH highly affects the prepared samples' nucleation, growth mechanism, and surface characteristics. Planner defects, structural anisotropy, oriented attachment of the nanocrystals, and surface hydroxylation were drastically enhanced with pH increment. These parameters appeared to have a positive impact on photocatalytic reactions. The synthesised TiO2 (at pH 5.5) was recognised as an efficient photocatalyst (efficiency > 99.5% in 80 min), even better than single-phase anatase and, P25 for phenol decomposition. The prepared photocatalyst could be helpful to degrade organic pollutants in wastewater to protect the environment.

Development of photocatalyst based on NaYF4: Yb, Tm@NaYF4: Yb, Ce/NH2-MIL-101 (Cr): Doping Ce3+ ions to promote the efficient energy transfer between core and shell

Utilization of the whole solar spectrum for the photocatalysis is still a challenge and interesting topic. A series of novel photocatalysts are fabricated by combination of core–shell upconversion nanoparticles NaYF4: Yb, Tm@NaYF4: Yb, Ce (Tm@Ce) with the NH2-MIL-101 (Cr) (NMC) (Tm@Ce/NMC). Tm@Ce/NMC displays the high stability, wide photoresponsive range from UV–Vis to NIR, and excellent photocatalytic activity for decomposition of RhB. With the optimal doping amount of Ce3+ ions and ratio between Tm@Ce and NMC, the degradation of RhB is improved by 1.13, 1.14, and 1.50 times as compared with NaYF4: Yb, Tm/NMC (Tm@NMC), under the simulated solar light, UV + Vis, and NIR, respectively. The enhanced photocatalytic activity of Tm@Ce/NMC is mainly attributed to the efficient energy transfer between core and shell by the doping Ce3+ ions along with the distinct charge separation and suppressed recombination. By the controlled synthesis, the NaYF4: Yb, Tm (YT) nanoparticle is developed with the similar size as the Tm@Ce to further testify the effect of doping Ce3+ ions and exclude the influence of the increased size. The photocatalytic activity of YT/NMC is the less than that of Tm@Ce/NMC, which is almost the same with that of Tm/NMC. It suggests that to merely increase the size of upconversion nanoparticles is not the judicious choice for enhancement of the photocatalytic activity. On the basis of the trapping experiments and other spectra properties, the possible photocatalytic mechanism is conjectured, which is helpful to refine the structure design with the ultimate aim to get the robust photocatalyst.

Substitutionally rhodium(IV)-doped titania showing photocatalytic activity toward organics oxidation under visible-light irradiation

In this study, an aqueous solution containing rhodium(IV) (Rh(IV)) was prepared by oxidation of rhodium(III) (Rh(III)) with solid sodium bismuthate in nitric acid and then used as a medium for hydrothermal titania preparation to obtain rhodium-doped titania (Rh-TiO2) composite. Rh(IV) species were observed in Rh-TiO2 in XPS analysis. Effect of rhodium/titanium molar ratio (Rh/Ti) on the photocatalytic activity was studied. The obtained characteristics suggest successful rhodium substitution and doping of titania to give visible-light absorption. The Rh-TiO2 composite exhibits enhanced photocatalytic activity for acetic acid decomposition and 2-propanol oxidation under UV–vis (> 290 nm) and visible-light (> 450 nm) irradiation, respectively. The enhanced photocatalytic activity is attributable to the visible-light absorption induced by rhodium doping. These results indicate that Rh-TiO2 photocatalyst materials could be promising materials for high-efficiency photooxidation reactions under visible-light irradiation.

Enhanced photocatalytic activity of accordion-like layered Ti3C2 (MXene) coupled with Fe-modified decahedral anatase particles exposing {1 0 1} and {0 0 1} facets

New composites consisting of decahedral anatase particles exposing {001} and {101} facets coupled with accordion-like layered Ti3C2 with boosted photocatalytic activity towards phenol and carbamazepine degradation were investigated. The photocatalysts were characterized with X-ray diffraction (XRD), diffuse reflectance spectroscopy (DR/UV–Vis), Brunauer-Emmett-Teller (BET) specific surface area, Raman spectroscopy, scanning electron microscopy (SEM), electron paramagnetic resonance (EPR) spectroscopy, emission spectroscopy, luminescence decay analysis, electrochemical impedance spectroscopy (EIS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), and electrophoretic mobility measurements. The effect of hydrothermal reaction parameters on physicochemical, structural, and photocatalytic properties was studied. In all photodegradation processes, ortho-hydroxyphenol and para-hydroxyphenol were detected as the first intermediates of phenol decomposition. For the TiO2/Ti3C2(140,12) sample containing VTi, a higher concentration of para-hydroxyphenol than ortho-hydroxyphenol was observed, whereas for sample TiO2/Ti3C2(220,24) higher concentration of ortho-hydroxyphenol was noticed. The formation of surface heterojunction between {101} and {001} facets of decahedral anatase particles grown on Ti3C2 surface led to improved photoelectron transfer and enhanced photocatalytic activity towards degradation of carbamazepine - non-biodegradable and susceptible to bioaccumulation in living organisms commonly used pharmaceutical agent. Moreover, modification of TiO2/Ti3C2 surface with iron by magnetron sputtering deposition markedly improved photocatalytic activity in carbamazepine decomposition, with nearly 100% degradation in 60 min of irradiation under simulated solar light.

Visible-Light-Driven Asymmetric TiO2-Based Photocatalytic Micromotor Hybridized with a Conjugated Polyelectrolyte and Glucose Oxidase.

We fabricated a TiO2-based micromotor that was asymmetrically decorated with a water-soluble conjugated polymer (WSP) on one hemisphere and glucose oxidase (GOx) on the opposite hemisphere. The WSP, which had photocatalytic activity for H2O2 decomposition, enabled motion of the micromotor under visible light. The GOx on the other hemisphere of the micromotor decomposed glucose to produce H2O2 and enabled motion of the micromotor without light irradiation. In addition, WSP and GOx were attached to TiO2 by chemical bonds, providing stability during use. As a result, the micromotor could move by self-generating H2O2 for its own fuel by consuming glucose even without photoirradiation. The micromotor could move faster than without visible light irradiation through the synergistic decomposition of glucose and H2O2 under visible light by the diffusiophoretic mechanism with a speed of 7.49 μm/s.

Evaluation of photocatalytic activities in decomposition of methylene blue in aqueous solution of Mn-ZIF-8 and Mn@Zn

In the present study, manganese modified zeolitic imidazolate framework-8 (Mn-ZIF-8) and zinc-manganese bimetallic oxides (denoted as Mn@Zn), which was formed by Mn-ZIF-8 heat treatment, had been prepared and applied as photocatalysts to decompose methylene blue (MB) under UV radiation. The influence of manganese content on the structure of ZIF-8, as well as the temperature and heat treatment time of Mn-ZIF-8 material to produce Mn@Zn with high photocatalytic activity was investigated. Results showed that all Mn-ZIF-8 samples have photocatalytic activity, but the MB decomposition efficiency of Mn-ZIF-8 samples were lower than pure ZIF-8. The suitable condition for heat treatment of Mn-ZIF-8 to produce Mn@Zn with high photocatalytic activity was at 500 ºC for 5 hours. However, the MB decomposition efficiency of this sample only reached 22% after 180 minutes of UV radiation.

Optimizing electron structure of Zn-doped AgFeO2 with abundant oxygen vacancies to boost photocatalytic activity for Cr(VI) reduction and organic pollutants decomposition: DFT insights and experimental

The density functional theory (DFT) not only is indispensable to calculate the electronic structure and chemical property of photocatalysts, but also provides guidance to the understanding of the mechanisms involved in photocatalysis. Herein, a novel Zn doped AgFeO2 was successfully constructed for enhancement of Cr(VI) reduction and azophloxine decomposition under visible light irradiation. The DFT calculation was employed to set up a Zn doped AgFeO2 model to simulate its split Zn 3d levels shift to lower energy to optimize the band structure. With Zn doped, the AgFeO2 exhibit enhanced reducing capacity. As expected, compared to unmodified AgFeO2, Zn doped AgFeO2 can reduce and remove more than 90% of Cr(VI). Based on theoretical analysis and systematic experiments, the enhanced photocatalytic of Zn doped AgFeO2 were arisen from superoxide radical (O2−) generation and photocarrier transfer via oxygen vacancies (OVs) enrichment, and the OVs would provide coordinatively unsaturated sites for Cr(VI) adsorption. We expect this work can provide new insights into the photocatalytic utilization of AgFeO2.

Composite nanoparticles with titania–poly(N-vinylamide) core–shell structure

Composite nanoparticles with a core consisting of associated anatase crystallites and a polymeric shell consisting of poly(N-vinylpyrrolidone) or poly(N-vinylcaprolactam) were synthesized and found to have antimicrobial activity against Escherichia coli and Staphylococcus aureus as well as photocatalytic activity in decomposition of methyl orange and methylene blue dyes. The highest antibacterial activity of the particles with poly(N-vinylpyrrolidone) shell is due to the larger amount of S O 4 2 − groups and water adsorbed on the surface, while their photocatalytic activity is comparable with that of commercial nanoanatase samples.

Hierarchical CoTiO3@NiO core–shell sub-microbelts as direct Z-scheme photocatalyst for efficient visible-light-driven tetracycline degradation

The hierarchical binary 1D@2D CoTiO3@NiO Z-scheme heterojunctions with well-defined core–shell feature display the enhanced photocatalytic activity for antibiotic tetracycline decomposition under visible light illumination. The obtained CoTiO3@NiO heterostructured sub-microbelts show a superior photocatalytic efficiency to the pristine CoTiO3 sub-microbelts, and NiO nanoclusters. The TC removal efficiency of CoTiO3@NiO sub-microbelts is 1.75 and 2.15 times higher than that of pristine CoTiO3, and NiO, respectively. The electrospinning CoTiO3 sub-microbelts are decorated uniformly with in situ nanosheets of NiO longitudinally aligned through a facile two-step precipitation-calcination processure. The Z-scheme heterojunctions consisting of CoTiO3 and NiO efficiently accelerate photo-generated electron-hole separation efficiency, and afford a high specific surface area, which ultimately improve the efficiency of TC degradation. The profitable carrier transmission mechanism and special core–shell structure in the CoTiO3@NiO system are in charge of the elevated catalytic activity because of the formed Z-scheme system. These features demonstrate that the hierarchical CoTiO3@NiO core–shell heterojunctions have the great application potential for tetracycline removal from wastewater.

LaO1.5 surface modification of titanium-substituted hydroxyapatite photocatalyst and effects on 2-propanol photocatalytic decomposition mechanisms

After using impregnation to prepare LaO1.5 cluster modified titanium-substituted hydroxyapatites (Ti-HAps), photocatalytic decomposition activity on gaseous 2-propanol (IPA) under UV illumination was increased by three times through LaO1.5 modification while preserving its high adsorption capability for organic compounds. First-principles molecular dynamics simulations and electronic structure investigations revealed that photo-excited electron transfer from Ti to La does not occur in LaO1.5-modified Ti-HAp. Rather, the results implied that its photocatalytic activity increase is related to gaseous IPA and O2 adsorption properties. The IPA dissociative adsorption at Ca sites was observed in LaO1.5-modified Ti-HAp. The obtained electronic structure suggests that the adsorbed IPA molecule can be oxidized easily and directly. Moreover, O2 molecule adsorption and desorption were observed, which implies charge recombination suppression and that O2●- radical can be involved in IPA decomposition. Results demonstrate that control of the adsorption properties of target molecules by cluster modification can enhance photocatalytic decomposition activity.

Hydrothermal assembly, structural diversity, and photocatalytic characterization of two polyoxometalates-based hybrid CuII and CuI coordination polymers with 2,6-(1,2,4-triazole-4-yl)pyridine

In this work, under hydrothermal conditions, two novel polyoxometalates (POMs)-based CuII and CuI hybrid materials with 2,6-(1,2,4-triazole-4-yl)pyridine (L1), namely yellow block crystals [Cu2(L1)2(Mo4O13)] (1) and blue block crystals [Cu2(L1)3(H2O)2(Mo4O13)2] (2) have been designed and synthesized. These POM-based CuII and CuI hybrid materials 1–2 have been determined by single crystal X-ray diffraction analyses. In 1, these Mo8O26 4− anions and CuI centers are inter-linked by bidentate L1, which are arranged into the 1 D POMs-based CuI hybrid metal-organic framework. In 2, these L1 ligands bridge neighboring CuII centers and Mo8O26 4− anions, which ultimately form the unique 3 D POM-based CuII hybrid coordination framework of 2. Photocatalytic activities for decomposition of different organic dyes (Rhodamine B (RhB), methylene blue (MB) and methyl orange (MO)) have been investigated for 2, indicating that 2 are good candidates for the photocatalytic degradation of these organic dyes.

Carbon Quantum Dots Modified (002) Oriented Bi2O2CO3 Composites with Enhanced Photocatalytic Removal of Toluene in Air.

In work, (002) oriented flower-like Bi2O2CO3(BOC) composites are synthesized by a facile chemical route and carbon quantum dots (CQDs) are modified on their surfaces through a hydrothermal method. The synthesized samples (CQD/BOC) are characterized by X-ray diffraction (XRD), SEM, X-ray photoelectron spectroscopy (XPS), UV-Vis diffuser reflectances (DRS), BET and TEM/HRTEM. The morphologies of CQD/BOC composites are the flower-like shapes, the irregular flaky structures and the fine spherical particles of CQDs attached. Photocatalytic performances were investigated in terms of removing gaseous toluene at a concentration of 94.3ppm in air, with the assistance of CQD/BOC under artificial irradiation. Our results show that CQDs modified (002) oriented Bi2O2CO3 exhibits good photocatalytic activity for toluene decomposition, which can be attributed to the enhanced efficient charge separation. A certain ratio composite photocatalyst (BOC-CQD-15) shows a toluene removal rate of 96.62% in three hours, as well as great stability. CO2 was verified to be the primary product. The oriented flower-like Bi2O2CO3 with carbon quantum dots on the surface shows great potential in the field of solar driven air purification.

One-Pot Synthesis of Anatase, Rutile-Decorated Hydrogen Titanate Nanorods by Yttrium Doping for Solar H2 Production.

We have prepared yttrium (Y)-doped hydrogen titanate nanorods (HTN) by a microwave-assisted hydrothermal method. Y-doped HTN showed much improved photocatalytic activities for both H2 evolution and dye decomposition. H2 production from a methanol–water solution under UV–visible light for 7 h was enhanced by a factor of 5.5 with 1 wt % Y-doping. Doping with Y3+ ions reduced the band gap of HTN by ∼0.28 eV and induced new phases of anatase and rutile. High photocatalysis by Y-doping was attributed to enhanced light absorption (smaller band gap) and effective charge separation (heterojunction). To optimize H2 production, a series of experiments examining effects of doping concentrations and non-noble surface metal (e.g., Ni, Cu, Co) loading were carefully performed. Y-doping in this work is a new and promising approach for synthesizing highly active HTN by producing the HTN/rutile/anatase heterostructure within the one-pot method.

Preparation and photocatalytic activities for decomposition of methylene blue of zeolitic imidazolate framework-8

In the present study, zeolitic imidazolate framework-8 (ZIF-8) is synthesized quickly in methanol solvent with the support of ultrasound, and application of photocatalyst for methylene blue (MB) decomposition reaction under UV radiation. The obtained ZIF-8 was characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and UV-Vis diffuse reflectance spectra (DR-UV-Vis). The influence pH and kinetics of photocatalytic MB decomposition and reusability of ZIF-8, were also investigated. The results indicated that ZIF-8 could work effectively in the wide pH range from 4 to 12. When the initial pH of the solution increases to 12, the adsorption capacity and MB decomposition efficiency are both high. The MB decomposition on the ZIF-8 photocatalyst followed a pseudo-first-order kinetics model. The structural strength of ZIF-8 as well as the relatively high photocatalytic efficiency after reuse three times shows that ZIF-8 has good reusability and can be applied to treatment of organic pollutants in aqueous solution.