Tungstophosphate Intercalated ZnAl Layered Double Hydroxide for Adsorptive and Visible Light Driven Photocatalytic Decolourisation of Organic Dyes
Abstract
1416 8687
Tungstophosphate Intercalated ZnAl Layered Double Hydroxide for Adsorptive and Visible Light Driven Photocatalytic Decolourisation of Organic DyesAbstract
Tungstophosphate (PW12O403-) intercalated ZnAl-Layered double hydroxide (ZnAl-PW12) was successfully synthesized through the rehydration of calcined LDH. Chemical analyses and characterizations by powder XRD, FT-IR, and Diffuse reflectance UV-Vis spectra confirmed the intercalation of PW12O403- ions equivalent to ~80% of the residual positive charge in the brucite layer. The efficiency of ZnAl-PW12 for decolourisation of four structurally different cationic/anionic dyes through simultaneous adsorption and photocata [...] 1416 8687 |
Synthesis of a Solid Base Catalyst Formed from Zinc(II) Acetylacetonate and Consisting of MgO Modified with ZnOAbstract
Solid base catalysts consisting of MgO modified with 10 mol% ZnO (ZnO/MgO) were prepared by depositing zinc(II) acetylacetonate (Zn(acac)2) in polar and nonpolar organic solvents on the surface of MgO and Mg(OH)2. The process was followed by thermal decomposition in air at 773 K over a period of 3 h. The activity of MgO modified with Zn(acac)2 for base-catalyzed retroaldol reaction (the decomposition of diacetone alcohol (4-hydroxy-4-methyl-2-pentanone) to acetone) at 299 K was higher than the activity of unmodifie [...] 1391 9790 |
Influence of Bifunctional PtZn/SiO2 and H-ZSM-5 Catalyst on the Rates and Selectivity of Propene AromatizationAbstract
Previous studies on the conversion of olefins to aromatics with bifunctional Ga- or Zn-ZSM-5 catalysts have concluded that benzene, toluene, and xylenes (BTX) yields are significantly higher than for ZSM-5 alone. These results were attributed to the higher aromatic dehydrogenation rate of Ga or Zn. In this study, a highly active, bifunctional PtZn/SiO2 (1.3 wt% Pt, 2.6 wt% Zn) with H-ZSM-5 (Si/Al = 40) catalyst is investigated for propene aromatization at 723 K and 823 K. At low to moderate propene conversions, in [...] 1376 9919 |
The Effect of Oxygen-containing Additives in Feedstock on the Performance of the Catalytic Cracking ProcessAbstract
In this study, we found that adding catalytic cracking feedstock, vacuum gas oil, and naphthenic acids in the amount of 0.005–0.0075% vol. increased the liquid target fractions, i.e., gasoline and light gas oil. The decrease in the yield of hydrocarbon gas at a practically constant degree of conversion of the raw material indicated a small proportion of the reactions of re-cracking of the resulting products. This also indicated the resource-saving nature of the process, allowing a larger amount of gasoline fraction [...] 1295 7506 |
Organic Structure-Directing Agent Free Synthesis of Mordenite with Seeds, Used as A Support for Mo Catalysts in the Transesterification of Soybean Oilby
Abstract
This work prepared mordenite using seeds and without organic structure-directing agents (OSDAs). The Mo/Mordenite was prepared through wet impregnation and the catalysts’ performance was checked for transesterification of soybean oil with methanol. The mordenite zeolite was prepared through hydrothermal crystallization under static conditions with a molar composition of 6Na2O:Al2O3:30SiO2:780H2O. The catalyst samples were characterized crystallinity through X-ray diffraction, elemental composition by X-ray fluoresc [...] 1292 9474 |
Methanol Synthesis Catalyst Waste as the Principal Component of New Sustainable Cementless Concreteby
Abstract
Methanol synthesis catalyst (MSC) waste was applied as the principal component (till 70 wt.%) of sustainable ceramics in composites with bauxite processing waste (RM), and waste foundry sand (FS). The results of the initial components' chemical interaction studies by a complex of methods (XRD, SEM/EDS/mapping, AAS and LAMMA) during heating demonstrated the synthesis of amorphous glasslike new formation, their filling of pores and compaction of the ceramic’s structure. In this case, a strong chemical and mechanical [...] 1272 9026 |
Determination of Reflectance Spectra and Colorimetry of Titanium and Tungsten Oxides Obtained by Microwave-assisted Hydrothermal SynthesisAbstract
Sustainability has driven the use of heterogeneous photocatalysis as one of the primary methods for environmental decontamination, reduction, degradation, remediation, or transformation of polluting chemical residues and purification treatment of effluents and wastewater. TiO2 is the most commonly used semiconductor in heterogeneous photocatalysis. It acquires relevance, as it has favorable properties, such as non-toxicity, stability in a wide range of pH, economic viability, etc., which encourage its application a [...] 1236 6186 |
Removal of As(III) from Water by Cellulase Templated TiO2: A Photocatalytic Oxidation Conjugated Adsorption ProcessAbstract
TiO2 photocatalyst was prepared using cellulase as a biotemplate through a hydrothermal process. The as-prepared catalyst was characterized based on physicochemical techniques and was used to remove As(III) from contaminated water. The cellulase templated TiO2 photocatalyst (TiO2-cellulase) had a large specific surface area, which reached 166.6 m2·g–1. It also had a strong oxidation ability and, thus, behaved well in both photocatalytic oxidation of As(III) and dark adsorption. The pH of the solution h [...] 1224 7162 |
Research and Application of Modified ZSM-5 for the Process of Alkylation of Oil Distillate FractionsAbstract
In the oil distillate fraction alkylation process, a modified Zr zeolite ZSM-5 was obtained and studied. The modification was executed using a method that impregnated ZSM-5 with a 5% solution of ZrOCl2∙6H2O. X-ray diffraction studies were conducted on zeolite ZSM-5, zirconyl chloride modifier ZrOCl2∙6H2O, and modified zeolite ZSM-5-ZrO2, which was calcined at temperatures of 200, 400, and 550°C. The results revealed that the phase composition of modified ZSM-5-ZrO2 zeolite samples varied depending on the calcinatio [...] 1202 7816 |
Catalytic Co-gasification of Lignites Blended with a Forest Residue under the Carbon Dioxide Streamby
Abstract
The present study investigated the co-gasification of two different lignites blended with the forest residue collected from the land restoration activity sites of open-pit mines located in the region of the Ptolemais basin in North Greece performed under the carbon dioxide stream. All samples were devolatilized in a fixed bed unit prior to the gasification evaluations. The gasification evaluations were performed using a thermal analysis system (TG/DTG) operated at temperatures of up to 1000 °C. The reactivity, [...] 1193 6405 |
Soil Treatment from Hazardous Particles Using Designed Nanosensors: A Physical and Chemical AnalysisAbstract
Being critical to achieving Sustainable Development Goals (SDGs) of the United Nations, strengthening understanding of the properties and processes of soil at national and regional scales is imperative. The target of this research is removing transition metals of Cr, Mn, Fe, Zn, W, Cd from soil due to nanomaterial-based boron nitride nanocage (B5N10-nc). The electromagnetic and thermodynamic attributes of toxic transition metals trapped in B5N10-nc were depicted by materials modeling. It has been studied the behavi [...] 1191 5244 |
Production and Characterization of Carboxymethylcellulase by Submerged Fermentation of Moniliophthora perniciosaAbstract
Microorganisms that are capable of degrading lignocellulolytic materials can produce extracellular cellulase complexes. Microorganisms are an excellent alternative for the production of cellulolytic complex, since these sources have a high power of multiplication. In this work, we researched the production by the fungus Moniliophthora perniciosa. The production and pH and temperature optimum optimization were studied by Response surface methodology and carboxymethylcellulase (CMCase) characterization. Thermal stabi [...] 1189 7597 |
The Effects of Ge Substrate Surface States and Au Catalyst Layer Thickness on the Growth of Different GexOy Nanomaterials and Nanocrystals Configurations Using Vapor-Liquid-Solid Method with two Steps Temperature ModeAbstract
Recently the GexOy nanomaterials have been studying intensively due to their interesting electronic materials, which have many particular properties and applications in nanotechnology and nano-devices fabrication. Much work has been done on many different synthesis methods and their properties of Ge and GexOy nanomaterials. However, the effects of the different Ge substrate surface states and Au catalyst layer thicknesses on the formation of different forms/morphologies of nanomaterials (nanowires, nanorods, nanopa [...] 1167 9375 |
Effective Photogeneration of Singlet Oxygen and High Photocatalytic and Antibacterial Activities of Porous Mn-Doped ZnO-ZrO2 Nanocompositesby
Abstract
Disperse porous Mn-doped ZnO-ZrO2 nanocomposites were prepared using the facile polymer-salt method. The effect of Mn content on the crystal structure, composite morphologies, their ability to photogenate the singlet oxygen, luminescence properties, and bactericidal activities were studied. The crystal structure and morphology of these materials were investigated using XRD and SEM analysis. It was found that obtained nanocomposites consist of small (~9 nm) hexagonal ZnO and fine ZrO2 crystals and the embedding of M [...] 1143 7239 |
Fabrication and Catalytic Property of an Ordered Terpyridine Pd(II)/Ni(II) Catalytic Monolayer for Suzuki Coupling ReactionsAbstract
Fabrication, arrangement, and controllable composition of ordered organometallic films are critical for designing a highly active catalyst and investigating the catalytic mechanism. In this paper, an organometallic terpyridine Pd(II)/Ni(II) monolayer linked on the silicon substrate surface (denoted as Si-Tpy-Pd1/Ni1) was prepared and characterized using water contact angle, ultraviolet spectra, X-ray diffraction, scanning electron microscopy, and X-ray photoelectron microscopy. Si-Tpy-Pd1/Ni1 exhibited high catalyt [...] 1116 7822 |
Obtaining TiO2 Nanostructures by Electrospinning and Analysis of Absorbance in the UVA Spectrum for Photocatalytic Applicationby
Abstract
The synthesis of fibers by electrospinning allows for obtaining nanostructures of one-dimensional materials with good flexibility, optical and catalytic properties, high surface area and porosity. They can be used in applications such as: catalysts, solar cells, fuel cells, membranes, and hydrogen batteries, among others. Here we emphasize that few reports in the literature describe the existing synergism between the optical and photocatalytic properties of TiO2, and the influence of this synergism on the formation [...] 1081 12827 |
Acknowledgment to Reviewers of Catalysis Research in 2024Abstract
The editors of Catalysis Research would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2024. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers can download a certificate of recognition directly from our submission system. Additionally, reviewers can sign up to the Web [...] 989 3830 |
Fabrication of CuO-Decorated Fe2O3 Nanoparticles as Efficient and Durable Electrocatalyst for Oxygen Evolution Reactionby
Abstract
The electrochemical water oxidation application of CuO@Fe2O3 materials as potential catalysts is being reported for the first time. A series of CuO@Fe2O3 with different molar ratios of CuO (5, 7, 10, 12, and 15%) was fabricated through precipitation followed by the impregnation method. Structural and electrochemical studies were carried out by using different analytical platforms, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Energy dispersive [...] 940 2908 |
Acknowledgement to Reviewers of Catalysis Research in 2023Abstract
The editors of Catalysis Research would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2023. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal’s editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers can download a certificate of recognition directly from our submission system. Additionally, reviewers can sign up to th [...] 869 5175 |
Acknowledgement to Reviewers of Catalysis Research in 2022Abstract
The editors of Catalysis Research would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2022. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal’s editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers receive a voucher entitling them to a discount on their next LIDSEN publication and can download a certificate of recogn [...] 848 5466 |
Acknowledgment to Reviewers of Catalysis Research in 2025Abstract
The editors of Catalysis Research would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2025. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers can download a certificate of recognition directly from our submission system. Additionally, reviewers can sign up to the Web [...] 695 1180 |
Paranitrophenol and Organic Azo Dye Degradation: Catalytic Power of Terminalia Leaf Silver NanoparticlesAbstract
Terminalia species is a widely available plant that can be used to synthesise silver nanoparticles (AgNPs) and harness their catalytic capacity. This experimental design will explore the potential of Terminalia AgNPs in contributing to the degradation process of toxic chemicals generated by industries such as textiles, food, and pharmaceuticals. This research uses four leaf varieties of Terminalia species—T. arjuna, T. bellirica, T. chebula, and T. catappa—to synthesize AgNPs, evaluate their optimal synthesis condi [...] 686 3850 |
Photocatalytic and Catalytic Methods for Organic Azo Dyes and Paranitrophenol Pollutants Removal Using Green Synthesised Flacourtia indica Silver NanoparticlesAbstract
The advancement of photocatalytic nanomaterials has become central to addressing the growing challenge of removing organic pollutants from water systems through sustainable and efficient degradation pathways. In this study, silver nanoparticles were synthesized via a green approach using aqueous extracts derived from five parts of Flacourtia indica, including bark, flower, fruit, seed, and leaves, at 90°C for 45 minutes. UV–VIS spectroscopy (460 nm) confirmed nanoparticle formation, while scanning electron microsco [...] 493 1299 |
Valorization of Agro-Industrial Residues into Furfural via Catalytic Pyrolysisby
Abstract
Pyrolysis is a promising technology for converting biomass waste into bio-oil, a liquid product that can serve as feedstock for fuels and high-value chemicals. In this study, bio-oil was produced via catalytic pyrolysis of pear pulp waste, a byproduct from juice and jam manufacturing, using a fixed-bed reactor. Initial non-catalytic experiments were conducted under nitrogen and vacuum atmospheres at temperatures ranging from 300 to 450°C for 15 minutes to evaluate the effect of temperature on bio-oil yield. The res [...] 471 1414 |
Promising Electrocatalytic Systems 2,5-di-Me-Pyrazine-di-N-Oxide - Cyclohexanol - Single-Walled and Multi-Walled Carbon Nanotubes for the Simultaneous Metal-Free Oxidation of Cyclohexanol at Anode and Release of Hydrogen Evolution at Cathodeby
Abstract
Electrocatalytic oxidation of organic compound in the absence of noble metals or their oxides as catalysts and using metal-free electrodes is a "green" electrochemical, inexpensive and attractive process for practical use in electrocatalysis, power sources and sensors. The process accompanied by the elimination of protons, is of interest both for obtaining valuable organic compounds at the anode and for the release of hydrogen evolution at the cathode. In this work, the catalytic oxidation of cyclohexanol in the pr [...] 430 1105 |
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