photo-Fenton Catalyst Research Articles

Photo-Fenton degradation of emerging pollutants over Fe-POM nanoparticle/porous and ultrathin g-C3N4 nanosheet with rich nitrogen defect: Degradation mechanism, pathways, and products toxicity assessment

Surface defect engineering has been suggested as an effective strategy to enhance photo-Fenton degradation performance. However, the underlying impact mechanism remains unknown. This study precisely constructed an efficient photo-Fenton catalyst through self-assembly of Fe-polyoxometalates nanoparticles on porous and ultrathin g-C3N4 nanosheets with nitrogen vacancies (Fe-POM/CNNS-Nvac). These nitrogen vacancies promoted photo-Fenton reaction rate constant for tetracycline hydrochloride (TCH) from 0.0950 to 0.1520 min−1 under visible light irradiation. Scavenging experiments and characterization results indicated that nitrogen vacancies could accelerate Fe(III)/Fe(II) conversion for OH and 1O2 generation, and directly regulate electronic structure for O2− generation. The possible degradation pathways of TCH were interpreted using experimental results and frontier electron density calculations. The results indicated that holes (h+) were responsible for ring-opening and 1O2/OH/O2− contributed to demethylation, deamination, and further mineralization. This study provides novel insight for the design of highly efficient catalysts with nitrogen vacancies for the removal of emerging pollutants.

Identifying Iron-Bearing Nanoparticle Precursor for Thermal Transformation into the Highly Active Hematite Photo-Fenton Catalyst

The hematite photo-Fenton catalysis has attracted increasing attention because it offers strong oxidation of organic pollutants under visible light at neutral pH. In the present work, aqueous synthesis of hematite photo-Fenton catalysts with high activity is demonstrated. We compare photo-Fenton activity for hematite obtained by hydrolyzation at 60 °C or by a thermally induced transformation from iron-bearing nanoparticles, such as amorphous iron oxyhydroxide or goethite. A link between their structure and visible light photo-Fenton reactivity is established. The highest activity was observed for hematite obtained from goethite nanowires due to oblong platelet-like structure, high surface area and the presence of nanopores.

Environmental Assessment of Humic Acid Coated Magnetic Materials Used as Catalyst in Photo-Fenton Processes

Persistent organic pollutants have been increasingly detected in natural waters, and this represents a real challenge to the quality of this resource. To remove these species, advanced treatment technologies are required. Among these technologies, Fenton-like and photo-Fenton-like processes have been investigated for the removal of pollutants from water. Delicate aspects of photo-Fenton processes are that light-driven processes are energy intensive and require a fair amount of chemical inputs, which strongly affects their overall environmental burdens. At present, aside from determining the efficiency of the processes to remove pollutants of a particular technology, it becomes fundamental to assess also the environmental sustainability of the overall process. In this work, the methodology of the life cycle assessment (LCA) was applied to identify the hotspots of using magnetite particles covered with humic acid (Fe3O4/HA) as a heterogeneous photo-Fenton catalyst for water remediation. The sustainability of the overall process was considered, and a comparative LCA study was performed between H2O2 and persulfate activation at different pH. The addition of humic substances to the particles allows the effectiveness of the catalyst to improve without increasing the environmental impacts; these processes are strongly correlated with energy consumption and therefore with the efficiency of the process. For this reason, working at acidic pH allows us to contain the impacts.

Photocatalytic degradation of cationic and anionic organic pollutants in water via Fe-g-C3N4/CF as a macroscopic photo-Fenton catalyst under visible light irradiation

Abstract An industrially applicable Fe(II)/Fe(III) doped in g-C3N4 photo-catalyst has been synthesized by immobilizing this Fenton-like catalyst on the surface of carbon fibers felt (CF). Different techniques such as FTIR, XDR, FE-SEM, BET, XPS, and elemental mapping are used for demonstrating its morphological features. The results revealed that the presence of iron oxides had extended the specific surface area of the produced g-C3N4 network. The photo-degradation of MB and RhB, as cationic, and MO as anionic organic pollutants indicated that FeCl3/melamine molar ratio of (1:5) exhibited the highest photocatalytic activities. The visible light can increase the rate of Fenton-like reaction over the catalyst in the presence of H2O2. The radical scavenger experiments did show that ethylenediaminetetraacetic acid and isopropanol as holes and hydroxyl radicals scavengers extensively decrease the efficiency of the process. The final catalyst, that is, Fe-g-C3N4 (1:5)/CF, was stable and efficient after 5 cycles. Therefore, the prepared catalyst is offered as an efficient catalyst in the wastewater treatments.

Degradation of Congo Red Dye Using Homogeneous Photo Fenton Catalyst Coupled with Oxygen Kinetics and Statistical Analysis

Experimental design DoE (box behnken design BBD) and statistical analysis approaches were employed to determine the effect of Congo red dye (C.R) concentration, photo catalyst dose (Fe+2) and follow of oxygen gas as an oxidant on the degradation of C.R. The results show that the concentration oppositely affects the degradation yield whereas the remaining two factors show positive effect, throughout all experiments oxygen molecule shows crucial role in their positive effect with p-value about 0.01 which is very significant value. The accepted regression model was linear with significance p-value 0.032 that mean all factors show good agreement in linear relationship and the interactions was not important. Degradation kinetics was also applied to investigate the effect of increasing dye concentration on degradation rate constant with and without photo catalyst dose and oxidant (O2). It appears that the degradation of peak at 498nm is second order The result was in good agreement with that of statistical analysis that are 0.0435, 0.0545 and 5.4 M- min- with photo catalysis 12, 8 and 4 PPM dye, 4O2 mL/min,20PPM Fe+2 respectively, in case without photocatalyst the results were 0.0025 and 0.0207 M- min-with 12 and 4 PPM in turn.

Synthesis and Application of Novel Nano Fe-BTC/GO Composites as Highly Efficient Photocatalysts in the Dye Degradation

Nano Fe-BTC/graphene oxide (GO) composites were successfully synthesized by hydrothermal treatment with a microwave-assisted method. Samples were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), N2 adsorption–desorption, Scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS), and Ultraviolet–visible diffuse reflection spectroscopy (UV–Vis DRS). SEM image of Fe-BTC/GO-30 showed the particle size of 30–50 nm on the GO surface. From the UV–Vis diffuse reflectance spectra, it revealed that nano Fe-BTC/GO composite absorbed the wavelengths in the visible light region with a low bandgap energy of 2.2–2.45 eV. Fe-BTC/GO nanocomposites were tested for the photocatalytic degradation of reactive yellow 145 (RY-145) in aqueous solution. Fe-BTC/GO composites exhibited high photocatalytic activity. Thus, at pH of 3 and high initial concentration of 100 mg RY-145/L, removal efficiency reached the value of 98.18% after 60 min. of reaction. In comparison with Fe-BTC/GO synthesized by the solvothermal method, nano Fe-BTC/GO showed much higher RY-145 removal efficiency. Moreover, this Fe-BTC/GO-30 showed high catalytic activity stability and could be reused, opening the high potential application of this promising photo-Fenton catalyst in photocatalytic degradation of organic pollutants from aqueous solution.

Defect engineering of NH2-MIL-88B(Fe) using different monodentate ligands for enhancement of photo-Fenton catalytic performance of acetamiprid degradation

Engineering of monodentate ligands induced defects was proposed to modify NH2-MIL-88B(Fe) in order to promote its synergetic photo-Fenton catalytic degradation performance for acetamiprid (ACTM) as model neonicotinoid insecticides. Three monodentate ligands with different coordination groups (benzoic acid, pyrrole and pyrrole-2-carboxylic acid) were applied to in-situ induce ligand vacancies on NH2-MIL-88B(Fe). Effect of defect coordination mode on its photo-Fenton catalytic performance was investigated through the ACTM degradation reaction. Ligand defects on NH2-MIL-88B(Fe) would generate three merits: (1) it can modulate surface properties to enhance adsorption affinity towards ACTM; (2) it can introduce large amount of monodentate ligands and ligand vacancies in MOFs to promote light absorption and electron-hole separation capacity for photo-catalysis; (3) it can increase the amount of Fe Lewis acid sites to improve redox capacity of Fe2+/Fe3+ for Fenton-catalysis. In this work, Pyrrole-2-carboxylic acid (Pac) was proved to introduce more monodentate ligands in MOFs and generate more ligand vacancies as well. As a result, ACTM can be easily captured by defective NH2-MIL-88B(Fe) and degraded by in-situ triggered oxidative reaction through the synergistic “photo-Fenton catalysis”. Performance measurements showed that Pac-MIL88(Fe) achieved 7.3 times higher adsorption rate and 5.5 times higher catalytic rate for ACTM than that of pristine MIL88(Fe). Moreover, total organic carbon (TOC) conversion reached 97.0% within only 90 min using Pac-MIL88(Fe) as photo-Fenton catalyst, showing 1.7 times higher than pristine MIL88(Fe). Thus, the in-situ fabrication of ligand defect-containing MIL88(Fe) can be foreseen of potential for designing new MOFs for wider practical applications.

2D/2D step-scheme α-Fe2O3/Bi2WO6 photocatalyst with efficient charge transfer for enhanced photo-Fenton catalytic activity

Although the traditional Fenton reaction is considered an effective strategy for solving problems caused by environmental pollution, construction of an efficient photocatalytic system by coordinating the Fenton reaction is challenging. In this study, 2D/2D step-scheme α-Fe2O3/Bi2WO6 (FO/BWO) heterostructure photo-Fenton catalysts were successfully fabricated by a facile hydrothermal method. The as-prepared materials were characterized by XRD, FT-IR, TEM, XPS, UV-vis DRS, PL, I-t, EIS, and BET analyses. Under visible light irradiation, FO/BWO exhibited remarkably high and stable photo-Fenton catalytic activity for the degradation of methyl blue (MB) at low concentrations of H2O2. It was noted that FO/BWO (0.5) displayed a significantly enhanced photo-Fenton catalytic activity, which was 11.06 and 3.29 times those of FO nanosheets and BWO nanosheets, respectively. The notably improved photo-Fenton catalytic activity of FO/BWO was mainly due to the combination of H2O2 and FO under light illumination and the presence of the 2D/2D S-scheme heterostructure, with the large contact surface, abundant active sites, and efficient separation rate of photogenerated carriers playing contributory roles. Additionally, a possible catalytic mechanism for the FO/BWO composite was preliminarily proposed via active species trapping experiments. In summary, this study provided new insights into the synthesis of an effectively heterogeneous 2D/2D S-scheme photo-Fenton catalyst for degradation of organic pollutants in wastewater.

Synthesis, Characterization and Application of Iron(II) Doped Copper Ferrites (CuII(x)FeII(1-x)FeIII2O4) as Novel Heterogeneous Photo-Fenton Catalysts.

The heterogeneous photo-Fenton type system has huge fame in the field of wastewater treatment due to its reusability and appreciable photoactivity within a wide pH range. This research investigates the synthesis and characterization of iron(II) doped copper ferrite (CuII(x)FeII(1-x)FeIII2O4 nanoparticles (NPs) and their photocatalytic applications for the degradation of methylene blue (MB) as a model dye. The NPs were prepared via simple co-precipitation technique and calcination. The NPs were characterized by using Raman spectroscopy, X-ray diffractometry (XRD), scanning electron microscopy (SEM), and diffuse reflectance spectroscopy (DRS). SEM reveals the structural change from the spherical-like particles into needle-like fine particles as the consequence of the increasing ratio of copper(II) in the ferrites, accompanied by the decrease of the optical band-gap energies from 2.02 to 1.25 eV. The three major determinants of heterogeneous photo-Fenton system, namely NPs concentration, hydrogen peroxide concentration and pH, on the photocatalytic degradation of MB were studied. The reusability of NPs was found to be continuously increasing during 4 cycles. It was concluded that iron(II) doped copper ferrites, due to their favorable band-gap energies and peculiar structures, exhibit a strong potential for photocatalytic-degradation of dyes, for example, MB.

Visible light assisted Fenton type degradation of methylene blue by admicelle anchored alumina supported rod shaped manganese oxide

Manganese oxide (MnOx) nanorods supported on surfactant-modified alumina (SMA), synthesized by the redox co-precipitation method are employed as a heterogeneous photo-Fenton catalyst for degradation of methylene blue (MB) in presence of hydrogen peroxide (H2O2). The uniqueness of the work is that the admicellar support of sodium dodecyl sulfate (SDS), an anionic surfactant, on base material alumina has been utilized to host both the catalyst MnOx and the target pollutant MB. The catalyst is characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), UV–vis diffuse reflectance spectra (DRS), particle size analysis and X-ray photoelectron spectroscopy (XPS). The influence of operational parameters, such as initial pH, catalyst dose, H2O2 concentration, the intensity of visible light and initial concentration of MB has been investigated. The catalytic performance is evaluated in terms of MB decolorization. The reproducibility of the results and reusability of the catalyst is also checked. The turnover number (TON) and turnover frequency (TOF) of the catalyst are found to be 0.068 moles of MB per mole of Mn and 2.55 × 10−6 moles of MB /mole of Mn/s. The efficiency of the catalyst to generate hydroxyl radicals under visible light is confirmed using terephthalic acid fluorescence probing technology. Under optimized conditions ∼92 % decolourization of MB was achieved using the as-developed catalyst. The main degradation intermediates were identified by ESI-MS analysis to propose a possible degradation pathway of MB.

Efficient Removal of Metronidazole by the Photo-Fenton Process with a Magnetic Fe 3 O 4 @PBC Composite

AbstractFe3O4-coated pretreated biochars (Fe3O4@PBC) were prepared for the first time by a Fe(III)-ethanol solution impregnation-calcination method. When photo-Fenton catalysts were used, their eff...

Hematite/Graphitic Carbon Nitride Nanofilm for Fenton and Photocatalytic Oxidation of Methylene Blue

Hematite (α-Fe2O3)/graphitic carbon nitride (g-C3N4) nanofilm catalysts were synthesized on fluorine-doped tin oxide glass by hydrothermal and chemical vapor deposition. Scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy analyses of the synthesized catalyst showed that the nanoparticles of g-C3N4 were successfully deposited on α-Fe2O3 nanofilm. The methylene blue degradation efficiency of the α-Fe2O3/g-C3N4 composite catalyst was 2.6 times greater than that of the α-Fe2O3 single catalyst under ultraviolet (UV) irradiation. The methylene blue degradation rate by the α-Fe2O3/g-C3N4 catalyst increased by 6.5 times after 1 mM of hydrogen peroxide (H2O2) was added. The photo-Fenton reaction of the catalyst, UV, and H2O2 greatly increased the methylene blue degradation. The results from the scavenger experiment indicated that the main reactants in the methylene blue decomposition reaction are superoxide radicals photocatalytically generated by g-C3N4 and hydroxyl radicals generated by the photo-Fenton reaction. The α-Fe2O3/g-C3N4 nanofilm showed excellent reaction rate constants at pH 3 (Ka = 6.13 × 10−2 min−1), and still better efficiency at pH 7 (Ka = 3.67 × 10−2 min−1), compared to other methylene blue degradation catalysts. As an immobilized photo-Fenton catalyst without iron sludge formation, nanostructured α-Fe2O3/g-C3N4 are advantageous for process design compared to particle-type catalysts.

Z-scheme Fe2O3/g-C3N4 heterojunction with excellent photocatalytic property

To develop a photo-Fenton catalyst that works under mild conditions, we report the fabrication of Fe2O3 / g-C3N4 composite via a simple two-step calcination process for the degradation of phenol under room temperature, neutral solution, and simulated sunlight. The photo-Fenton catalytic degradation constant of the Fe2O3 / g-C3N4 composite is 7.07 and 7.62 times that of Fe2O3 and g-C3N4, respectively. The limited size of Fe2O3 and partial reduction of Fe3 + in the Fe2O3 / g-C3N4 composite promotes the production of · OH radical. The Z-mechanism with efficient charge separation efficiency contributes to the enhanced photo-Fenton catalytic performance.

Significant enhancement of photo-Fenton degradation of ofloxacin over Fe-Dis@Sep due to highly dispersed FeC6 with electron deficiency

An efficient strategy for enhancing iron efficiency in heterogeneous Fenton reaction via the pyrolysis of ferrocene chemically modified sepiolite (Sep) was proposed in this study. Highly dispersed FeC6 on sepiolite (Fe-Dis@Sep) was synthesized as an efficient photo-Fenton catalyst for the visible light degradation of ofloxacin (OFX). It exhibits an excellent Fenton activity and stability towards OFX degradation. The pseudo-first order reaction rate constant of Fe-Dis@Sep was 5.1-fold higher than that of the supported catalyst with aggregated iron oxides prepared by traditional impregnation method (Fe-Agg@Sep). Based on TEM images and density functional theory (DFT) calculation, the enhanced Fenton activity of Fe-Dis@Sep was attributed to the unique incorporation of FeC6 on Sep via Si-O-C-Fe bond which not only favor the high dispersion of FeC6 with an electron deficiency but also promote Fe(III) to Fe(II) cycle via the formation of surface Fe-H2O2 complex. OH and O2- were identified as active species for OFX degradation in Fe-Dis@Sep-H2O2-Vis system. 98.7% of F and 97.0% of N in OFX was converted into F− and NO3− with a TOC removal efficiency of 89.35%. The possible degradation pathway of OFX was also proposed according to HPLC-MS results. Finally, the Fenton reaction mechanism over Fe-Dis@Sep was discussed.

Potassium Ferrite as Heterogeneous Photo-Fenton Catalyst for Highly Efficient Dye Degradation

In this work, hexagon-shaped potassium ferrite (K2Fe4O7) crystals with different sizes were prepared using the hydrothermal method. The crystals showed a narrow band gap of 1.44 eV, revealed by UV-visible diffuse reflectance spectroscopy, and was thus used as a heterogeneous Fenton catalyst to degrade methylene blue (MB) and crystal violet (CV) in the presence of green oxidant H2O2 under visible-light irradiation. Among the investigated crystals, the as-prepared one with an average size of 20 µm (KFO-20) exhibited better photocatalytic activity due to its high surface area. When it was used as a photo-Fenton catalyst, 100% MB and 92% CV were degraded within 35 min. Moreover, the catalyst maintained high photocatalytic activity and was stable after four continuous cycles. The trapping experiments showed that the active hydroxyl radical (·OH) was dominant in the photo-Fenton reaction. Therefore, this new photo-Fenton catalyst has great potential for the photocatalytic degradation of dye contaminants in water.

Structural, Magnetic, Electrical and Photo-Fenton Properties of Copper Substituted Strontium M-Hexagonal Ferrite Nanomaterials via Chemical Coprecipitation Approach.

Copper substituted strontium ferrite nano spinels were synthesized by facile chemical coprecipitation method. Structural properties of all the nano materials were examined using Powder X-ray Diffraction of size ranging 22-50 nm and High Resolution Transmission Electron Microscopy which further revealed the formation of hexagonal spinel structure. The analysis of FT-IR spectra of all the samples confirmed the formation of M-O bond with spinel structure having characteristic peaks at 422 cm-1 and 586 cm-1. All the samples were subjected to dielectric studies at room temperature. A quite narrow band gap around 1.5-1.6 eV for all the samples indicates that these ferrites can behave as visible light photocatalysts. The as synthesized nano spinels were proposed to be promising heterogeneous Photo-Fenton catalysts under visible light for the degradation of organic pollutants. The photo catalytic degradation results revealed 94% degradation for all the prepared nano catalysts. The materials displayed remarkable photo-stability with recyclability up to five consecutive cycles. VSM studies of the materials exhibited weak ferromagnetic property with high surface area. Therefore, these magnetic materials presented no significant loss in activity specifying an exceptional capacity of ferrites to remove organic pollutants from wastewater.

Photo-Fenton oxidation and mineralization of methyl orange using Fe-sand as effective heterogeneous catalyst

A novel heterogeneous photo-Fenton catalyst, iron coated sand (Fe-sand) was synthesized by impregnation-calcination method. The catalyst Fe-sand was characterized by XRD, BET, SEM, TEM, FTIR, XRF and DRS methods. X-ray diffraction (XRD) analysis showed that the Fe-sand catalyst mainly consists of Fe2O3 and SiO2 crystallites, and the Fe concentration of the prepared catalyst measured by AAS is 135.7 mg/g. BET results revealed that Fe-sand possess a mesoporous structure with a porosity of 23%. The catalytic performance of the Fe-sand was studied in the discoloration and mineralization of methyl orange (MO). The influence of reacting conditions on degradation efficiency of the oxidation process was analyzed. At optimal conditions (200 mg/L of H2O2, 100 mg/L of initial MO concentration, pH = 3 and without added alcohol) complete discoloration of MO can be obtained within 60 min. The reaction process of MO discoloration was followed by UV–vis and GC–MS spectroscopic techniques. Based on the oxidation products formed, a probable degradation mechanism has been distinguished. Leaching tests indicated a very low concentration of dissolved iron ion and satisfactory stability of prepared catalyst. Industrial application of this catalyst in textile effluent treatment has shown that the proposed catalytic process is suitable for producing reusable water quality.

Magnetic yolk-shell structure of ZnFe2O4 nanoparticles for enhanced visible light photo-Fenton degradation towards antibiotics and mechanism study

Constructing yolk-shell structure is a promising strategy for creating much more active sites and enhancing relative light absorption. Yolk-shell ZnFe2O4 has been well used in the areas of electrocatalysis, sensor, etc., but no corresponding application in photo-Fenton reaction. In this work, yolk-shell ZnFe2O4 was firstly employed as photo-Fenton catalyst to investigate its advantage for antibiotics degradation. Interestingly, the yolk-shell ZnFe2O4 showed much improved photo-Fenton catalytic performance with magnetic recycling property, which is 5 times and 23 times higher than the ZnFe2O4 normal particles and α-Fe2O3, respectively, for degradation of contaminants under visible light irradiation. The superiority was mainly attributed to its relatively large surface area and much enhanced light absorption as well as effective charge separation, induced by unique yolk-shell structure. Besides, from the practical application view, the effect of reaction conditions, co-existing cations and anions were systematically investigated for the tetracycline (TC) photo-Fenton degradation. The TC degradation intermediate products were analyzed by HPLC-MS and a possible degradation pathway was proposed to illustrate the mechanism of TC degradation. The as-employed yolk-shell structure of ZnFe2O4 in this work probably provides a new method for designing high efficiency of photo-Fenton catalyst towards the decontamination of refractory pollutants in aqueous solution.

Construction of layered hollow Fe3O4/Fe1−xS @MoS2 composite with enhanced photo-Fenton and adsorption performance

Photo-Fenton catalysts enable to completely remove contaminants from water with its advanced oxidation technology. In this paper, a layered hollow Fe3O4/Fe1−xS@MoS2 composite as photo-Fenton catalyst and adsorbent was reported to remove organic dyes and antibiotics from water. First, Prussian blue is subjected to ion exchange and subsequent calcination to synthesize hollow Fe2O3. Then, a layered hollow composite material Fe3O4/Fe1−xS@MoS2 was synthesized by simple in situ hydrothermal growth of MoS2 with Fe2O3 as the substrate. The synthesized sample exhibited excellent photo-Fenton degradation performance and high adsorption capacity. Under the condition of unregulated pH, the degradation of 20 mg/L RhB solution just carried out within 4 min using 0.2 g/L of Fe3O4/Fe1−xS@MoS2-50 %. The result indicates that strong oxidizing of OH is the main active species. In addition, the maximum adsorption capacity of Fe3O4/Fe1−xS @MoS2-50 % sample adsorbed tetracycline hydrochloride reached 748.9 mg/L. The adsorption process follows pseudo-second-order kinetics model and Freundlich isotherm model. It is confirmed that the sample revealed fine cycle stability in both the photo-Fenton and the adsorption process. Moreover, the material has ferromagnetism for easy recycling. The layered hollow composite Fe3O4/Fe1−xS @MoS2 can be used as an excellent catalyst and adsorbent for environmental treatment. This present work provides new insight into the synthesis of photo-Fenton catalyst and adsorbent for sewage treatment.

Synthesis and application of functional Prussian blue nanoparticles for toxic dye degradation

Functional Prussian blue nanoparticles (PBN) is invented as photo-Fenton catalyst and conferred inexpensive, eco-friendly and more effective photodegradation approach to treat the dyestuff Rhodamine B using natural solar light. The photo-Fenton catalyst with four different crystallite size of functional PBN as PBN1, PBN2, PBN3 and PBN4 between 53 to 13 nm were fabricated by chemical reduction method using 2-(3,4-Epoxycyclohexyl)ethyltrimethoxysilane (EETMSi) and Cyclohexanone. EETMSi precisely control the morphology and crystallite size of the catalyst. The as-synthesized photo-Fenton catalysts were characterized by XRD, FTIR, EDX, DLS, HR-TEM, UV/Vis spectroscopy, XPS and BET techniques. Functional PBN/H2O2 combination presented a very promising approach for complete RhB degradation in the acidic condition via N-de-ethylation under solar light irradiation. RhB photodegradation efficiency has been evaluated under different condition to understand the influential role of different parameters; catalyst concentration, H2O2 concentration, size of catalyst and pH. The Kinetic rate constant for RhB photodegradation is found in the order of; (PBN4/H2O2) > (PBN3/H2O2) > (PBN2/H2O2) > (PBN1/H2O2) > (H2O2). The kinetics of the degradation process is found to obey Langmuir-Hinshelwood rate law and approved Pseudo-first order kinetics. The investigation also assessed the quicker (1.5 min) and more effective photodegradation approach for 100% removal of RhB justifying most efficient inexpensive photocatalyst compared to other reported methods. Similarly, the concurrently generated reactive oxygen species (ROS) was detected by EPR technique. The catalyst can be recovered even after five times of repetition. Further Analytical methods LC/MS and COD analysis were utilized to identify the degraded end product and extent of mineralization.