Mesoporous Ti Research Articles

Highly effective ruthenium-doped mesoporous Ti1−xRuxO2−y crystals for photocatalytic tetracycline degradation

The design of mesoporous Ti1−xRuxO2−y crystals in a two-step process offers an effective way for the preparation of efficient photocatalysts based on high photon absorption and charge extraction simultaneously.

Mesoporous Ti4O7 Spheres with Enhanced Zinc-Anchoring Effect for High-Performance Zinc-Nickel Batteries.

Zinc-nickel batteries are promising competitors for next-generation power supply due to their benefits of high safety, high working voltage, and attractive rate performance. However, their practical applications are plagued by their poor cycling performance, stemming from uneven redistribution of zinc during cycling that results in dendrite formation and shape changes of the electrode. In this work, mesoporous Ti4O7 microspheres are prepared and are employed as additives of a zinc anode. Notably, the presence of mesopores provides abundant chemisorption sites for Zn(OH)42- ions, inhibiting severe zinc redistribution in the electrode. Moreover, due to the good electrical conductivity and mesopores that serve as ion diffusion channels, the reaction reactivity and reversibility of the zinc electrode are greatly facilitated. As a result, the fabricated zinc-nickel battery with mesoporous Ti4O7 additives (ms-Ti4O7) exhibits an enhanced discharge capacity and a significantly prolonged cycling life. Even at a current of 10 A (∼138 mA cm-2), the ms-Ti4O7-modified anode demonstrates stable operation for longer than 718 h (700 cycles) with a discharge voltage of 1.2 V, which is much longer than those of a ZnO anode (192 h, 117 cycles) and a Ti4O7-particle (p-Ti4O7)-modified battery (590 h, 443 cycles). Furthermore, due to the anchoring effect for Zn(OH)42- and the uniform electric field, the effect of mesoporous Ti4O7 on inhibiting dendrite formation and shape change of the zinc electrode is highlighted.

Unusual Mesoporous Titanium Niobium Oxides Realizing Sodium‐Ion Batteries Operated at −40 °C

The sodium-ion batteries (SIBs) are promising candidate for grid-scale energy storage, however, the sluggish ion diffusion kinetics brought by the large radius of Na+ seriously limits the SIBs' performances, let alone at low temperatures. Herein, we propose a confined acid-base pair self-assembly strategy to synthesize unusual Ti0.88 Nb0.88 O4- x @C for high performance SIBs operated at room and low temperatures. The confinement self-assembly of acid-base pair around the micelles and confined crystallization by carbon layer realize the formation of ordered and stoichiometric mesoporous frameworks with opened ion channels. Thus, the mesoporous Ti0.88 Nb0.88 O4- x @C exhibits rapid Na+ diffusion kinetics at 25 and -40°C, which are one order higher than that of the nonporous one. A high reversible capacity of 233 mAh g-1 , excellent rate (a specific capacity of 103 mAh g-1 at 50 C) and cycling performances (<0.03% fading per cycle) can be observed at 25°C. More importantly, even at -40°C, the mesoporous Ti0.88 Nb0.88 O4- x @C can still deliver the 161 mAh g-1 capacity, a high initial Coulombic efficiency of 60% and outstanding cycling stability (99 mAh g-1 at 0.5 C after 500 cycles). We believe this strategy opens a new avenue for constructing novel mesoporous electrode materials for low-temperature energy storage. This article is protected by copyright. All rights reserved.

Mesoporous Ti4 O7 Nanosheets with High Polar Surface Area for Catalyzing Separator to Reduce the Shuttle Effect of Soluble Polysulfides in Lithium-sulfur Batteries.

In the effort to accelerate adsorption and catalytic conversion of lithium polysulfides (Li-PSs) and suppress the shuttle effect of lithium-sulfur batteries (LSBs), the Ti4 O7 nanosheets/carbon material-modified separator is successfully fabricated to reducing soluble Li-PSs' crossover from cathode to anode. The catalyst of mesoporous Ti4 O7 nanosheets with O-Ti-O units synthesized at low temperature shows both excellent conductivity and high surface area. The modified separator can serve as a diffusion barrier of Li-PSs and catalyst for converting soluble low-chain sulfides into insoluble ones and then remarkably enhance the sulfur utilization and electrochemical performance of the LSB. This work provides a feasible avenue in both design and synthesis of mesoporous catalyst materials for suppressing the shuttle effect of lithium-sulfur batteries.

Synthesis of the Novel Nanocatalyst of Pt&lt;sub&gt;3&lt;/sub&gt;Mo Nanoalloys on Ti&lt;sub&gt;0.8&lt;/sub&gt;W&lt;sub&gt;0.2&lt;/sub&gt;O&lt;sub&gt;2&lt;/sub&gt; via Hydrothermal and Microwave-Assisted Polyol Process

Direct methanol fuel cell (DMFC) attracts much attention due to its high abundance, environmental friendliness, and convenient transportation and storage. In this study, a novel catalyst of Pt3Mo alloy nanoparticles (NPs) on non-carbon Ti0.8W0.2O2 support was synthesized by microwave-assisted polyol process. The characteristic of Pt3Mo NPS/Ti0.8W0.2O2 catalyst was determined by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electronic microscopy (SEM), energy-dispersive X-ray (EDX), and Brunauer-Emmett-Teller (BET) method. Pt3Mo NPs had an average diameter of approximate 5.18 nm and were uniformly anchored on Ti0.8W0.2O2 surface. The ratio of Mo in the Pt3Mo alloy was consistent with the theoretical value, which supported the effectiveness of the synthesis method. In addition, Pt3Mo/Ti0.8W0.2O2 electrocatalysts exhibited higher CO-like tolerance in methanol oxidation reaction (MOR) than commercial electrocatalysts, excellent catalytic activity, and strong durability after 2000 cycles. The synergistic effect of Pt-Mo alloy, and the strong interaction between the bimetallic Pt-Mo alloy and the mesoporous Ti0.8W0.2O2 support, could weaken the Pt-CO bond. Besides, the high corrosion resistance and superior electrochemical durability of TiO2-based oxide also contribute to the excellent stability of Pt3Mo/Ti0.8W0.2O2 electrocatalyst in harsh electrochemical media. These results revealed that this material could be a potential catalyst in DMFC technology.

Mesoporous Ti0.5Cr0.5N for trace H2S detection with excellent long-term stability

Efficient, accurate and reliable detection and monitoring of H2S is of significance in a wide range of areas: industrial production, medical diagnosis, environmental monitoring, and health screening. However the rapid corrosion of commercial platinum-on-carbon (Pt/C) sensing electrodes in the presence of H2S presents a fundamental challenge for fuel cell gas sensors. Herein we report a solution to the issue through the design of a sensing electrode, which is based on Pt supported on mesoporous titanium chromium nitrides (Pt/Ti0.5Cr0.5N). Its desirable characteristics are due to its high electrochemical stability and strong metal-support interactions. The Pt/Ti0.5Cr0.5N-based sensors exhibit a much smaller attenuation (1.3%) in response to H2S than Pt/C-sensor (40%), after 2 months sensing test. Furthermore, the Pt/Ti0.5Cr0.5N-based sensors exhibit negligible cross response to other interfering gases compared with hydrogen sulfide. Results of density functional theory calculation also verify the excellent long-term stability and selectivity of the gas sensor. Our work hence points to a new sensing electrode system that offers a combination of high performance and stability for fuel-cell gas sensors.

Mesoporous titanium niobium nitrides supported Pt nanoparticles for highly selective and sensitive formaldehyde sensing

A highly sensitive and selective formaldehyde sensor is prepared by using mesoporous Ti0.75Nb0.25N supported Pt NPs as a high efficiency gas sensing electrode material.

Boosting alcohol electro-oxidation reaction with bimetallic PtRu nanoalloys supported on robust Ti0.7W0.3O2 nanomaterial in direct liquid fuel cells

In this work, an anatase Ti0.7W0.3O2-supported Pt3Ru nanoparticles (NPs) were fabricated by combining the advantages of the non-carbon Ti0.7W0.3O2 nanosupport and the synergistic effect of the bimetallic Pt3Ru nanoalloy that was investigated as electrocatalyst toward alcohol electrochemical oxidation. The bimetallic Pt3Ru nanoparticles with ~3 nm in diameter were relatively well-dispersed on the surface of the anatase Ti0.7W0.3O2 nanosupport via a surfactant-free microwave-assisted polyol route that, which was attributable to the good dispersibility of ethylene glycol and the rapid, uniformity of the microwave heating. For methanol and ethanol electrochemical oxidation, the as-obtained Pt3Ru (NPs)/Ti0.7W0.3O2 electrocatalyst exhibited the low onset potential (~0.10 V vs. NHE for MOR and ~0.35 V vs. NHE for EOR) and high mass activity (~350.84 mA mgPt−1 for MOR and ~274.59 mA mgPt−1 for EOR) compared to the commercial Pt (NPs)/C (E-TEK) electrocatalyst. Additionally, the CO-stripping and CA results indicated the remarkably enhanced CO-tolerance of the Pt3Ru (NPs)/Ti0.7W0.3O2 catalyst. After the 5000-cycle accelerated durability test (ADT) in acidic ethanol media, the bimetallic Pt3Ru (NPs)/Ti0.7W0.3O2 catalyst only showed the mass activity loss of 19.11% of its initial mass activity, compared with the severe deterioration of 44.04% of the commercial Pt (NPs)/C (E-TEK) catalyst. The outstanding results could be interpreted due to the bifunctional mechanism of the Pt3Ru nanoalloys combining with the synergistic effect between the bimetallic nanoalloy and the mesoporous Ti0.7W0.3O2 nanosupport as well as the superior anti-corrosion of the TiO2-based nanosupport under acidic and oxidative environments.

Mesoporous Ce-doped Ti:Ash Photocatalyst Investigation in Visible Light Photocatalytic Water Pretreatment Process

The treatment of organic pollutants in water including semiconductor photocatalysis is a promising approach to disinfect water. The objective of this study is to investigate the effect of Ce loaded on mesoporous Ti:Ash catalyst for water pretreatment process. The mesoporous Ti:Ash catalyst that doped with Ce was synthesized through wet impregnation method with 5%, 10%, and 15% weight percentage of Ce doped on 40:60 Ti:Ash. The photocatalytic properties were characterized through X-ray powder diffraction, scanning electron microscopy with energy-dispersive X-ray spectroscopy, N2 adsorption-desorption studies and diffuse reflectance UV–vis absorption spectroscopy. It is found that the Ti:Ash nanocomposites doped with Ce shifted the light absorption band-edge position to the visible region. Moreover, the Ce doped Ti:Ash has large surface area and pore diameter. The Ce doping could significantly improve the absorption edge of visible light and adjust the cut-off absorption wavelength from 404 nm to 451, 477 and 496 nm for 5%, 10% and 15% Ce-doped mesoporous Ti:Ash catalysts, respectively. As the Ce doping ratio increased, the band gaps decreased from 3.06 eV to 2.53 eV. The most contaminant reduction up to 45% was achieved when Ti:Ash:Ce 40:55:5 was used. Higher Ce loading on the photocatalyst may reduce the photocatalyst performance because supernumerary metal loading on TiO2 can block TiO2 defect sites which are necessary for the adsorption and photoactivation. The OPFA also acts as an adsorbent for some pollutants besides, reducing the water salinity. It can be deduced that the hybrid TiO2 photocatalyst that synthesized with OPFA and doped with Ce has huge potential to treat seawater prior to commercial seawater desalination process. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Efficiency Enhancement of Dye-Sensitized Solar Cells Using Ti–Nb Alloy Photoanodes with Mesoporous Oxide Surface

A native mesoporous titanium-niobium oxides layer on a Ti-6wt%Nb alloy sheet surface prepared through H2O2 pretreatment was successfully developed as an efficient photoanode for a dye-sensitized cell (DCCS). This alloyed mesoporous structure not only provided an increased surface area in contact with screen-printed TiO2 nanoparticles but also enabled Nb alloying in sintered nanoparticle deposits. Improvement of energy conversion efficiency of DSSCs can be increased up to 22% using H2O2 pretreatments with a proper post-annealing, and the mesoporous Ti–Nb photoanodes enhanced conversion efficiency by 15.2% to 18.3%, compared with unalloyed structures. EIS results under dark current indicate that DSSCs with mesoporous Ti–Nb photoanode exhibited a greater inhibition of recombination of electrons and holes at the interfaces of Nb-doped TiO2/dye/electrolyte layer due to energy barriers.

Facile photoinduced self-assembly synthesis of Ti-substituted mesoporous silica

Abstract Series of mesoporous Ti-substituted silica catalysts (PSMTS) with different silicon to titanium ratios and highly ordered mesoporous structures were prepared by facile photoinduced self-assembly method. The effects of Ti loading and synthesis conditions including irradiation time/strength and the photo-acid generator content on mesoporous structure and Ti coordination environment were thoroughly studied using various characterization methods. Catalytic performances were evaluated by the selective cyclohexane oxidation, which revealed that catalysts with Si/Ti molar ratio higher than 40 had ordered mesoporous channels and isolated framework Ti in tetrahedral coordination, and showing the optimum catalytic performances (52% conversion of cyclohexane and ca. 99% selectivity to cyclohexanone and cyclohexanol). Nevertheless, the increase of Ti loading resulted in relative disordered mesoporous channels and more extra-framework octahedral Ti species, and in turn giving rise to inferior catalytic performances. Moreover, it testified that the optimum photoinduced conditions for Ti incorporation are 15min irradiation time, 18 mW/cm2 irradiation strength and 3 wt% photo-acid generator.

Wire-like Pt on mesoporous Ti0.7W0.3O2 Nanomaterial with Compelling Electro-Activity for Effective Alcohol Electro-Oxidation

Finding out robust active and sustainable catalyst towards alcohol electro-oxidation reaction is major challenges for large-scale commercialization of direct alcohol fuel cells. Herein, a robust Pt nanowires (NWs)/Ti0.7W0.3O2 electrocatalyst, as the coherency of using non-carbon catalyst support and controlling the morphology and structure of the Pt nanocatalyst, was fabricated via an effortless chemical reduction reaction approach at room temperature without using surfactant/stabilizers or template to assemble an anodic electrocatalyst towards methanol electro-oxidation reaction (MOR) and ethanol electro-oxidation reaction (EOR). These observational results demonstrated that the Pt NWs/Ti0.7W0.3O2 electrocatalyst is an intriguing anodic electrocatalyst, which can alter the state-of-the-art Pt NPs/C catalyst. Compared with the conventional Pt NPs/C electrocatalyst, the Pt NWs/Ti0.7W0.3O2 electrocatalyst exhibited the lower onset potential (~0.1 V for MOR and ~0.2 for EOR), higher mass activity (~355.29 mA/mgPt for MOR and ~325.01 mA/mgPt for EOR) and much greater durability. The outperformance of the Pt NWs/Ti0.7W0.3O2 electrocatalyst is ascribable to the merits of the anisotropic one-dimensional Pt nanostructure and the mesoporous Ti0.7W0.3O2 support along with the synergistic effects between the Ti0.7W0.3O2 support and the Pt nanocatalyst. Furthermore, this approach may provide a promising catalytic platform for fuel cell technology and a variety of applications.

Hierarchical micro-/macroporous TS-1 zeolite epoxidation catalyst prepared by steam assisted crystallization

Abstract Mesoporous Ti–SiO2 nanoparticles were prepared under alkaline conditions in the presence of a surfactant and were subsequently converted into a hierarchical micro-/macroporous TS-1 zeolite with large crystal size using steam assisted crystallization. In this procedure, the precursor nanoparticles were used both as macroporous hard template and as Si and Ti sources. The secondary macroporosity is a reminiscence of the nanoparticles which undergo dissolution and recrystallization upon steaming. The obtained catalyst has structural properties comparable to benchmark TS-1. We show that the successful conversion of the amorphous material into a fully crystalline catalyst stands for its excellent catalytic performance in aqueous media. Besides, the combination of large crystal size with a hierarchical pore structure ensures easy catalyst handling and processing without compromising on the catalytic activity.

Solar-light driven photocatalytic activity of mesoporous nanocrystalline TiO2, SnO2, and TiO2-SnO2 composites

Mesoporous nanocrystalline metal oxides such as TiO2, SnO2, and TiO2-SnO2 composites form a new class of mesoporous inorganic solids, which exhibit excellent structural, textural, optical, and photocatalytic properties. Furthermore, they also possess a large number of surface-exposed catalytic active sites in addition to their intrinsic flexible diffusion characteristics. In this investigation, we report the photocatalytic activity of high-quality mesoporous TiO2, SnO2, and TiO2-SnO2 composites. All the catalysts were tested for photocatalytic degradation of 4-chlorophenol under a solar simulator. The reaction results indicate that the anatase-phase mesoporous Ti0·9Sn0·1O2 exhibits enhanced activity as compared with the commercial TiO2 (P-25).

High Conductivity and Surface Area of Mesoporous Ti0.7W0.3O₂ Materials as Promising Catalyst Support for Pt in Proton-Exchange Membrane Fuel Cells.

In this work, mesoporous Ti0.7W0.3O₂ materials with high conductivity and surface area as promising catalyst support for Pt in Proton-Exchange Membrane Fuel Cells (PEMFCs) were synthesized via a single-step solvothermal process at low-temperature without using any surfactants or stabilizers. The characterizations of material are measured via XRD, TEM, SEM-EDS, and BET as well as electronic conductivity measurement. As a result, Ti0.7W0.3O₂ formed a homogenous solid solution with mesoporous anatase-TiO₂ structure and uniformly spherical nanoparticles morphology of about ~10 nm diameter, together with a high electrical conductivity of 0.022 S/cm compared to that of undoped-TiO₂ (1.37×10-7 S/cm), which implied that tungsten (VI) ions was successfully doped into anatase-TiO₂ lattices. The N₂ adsorption/desorption isotherms indicated that Ti0.7W0.3O₂ is being mesoporous structure with high surface area up to ~202 m²/g, which is nearly similar to that of the commercial Vulcan XC72 (~232 m²/g). The Pt nanoparticles was easily anchored onto Ti0.7W0.3O₂ surface by the chemical reduction process using NaBH4 as a reducing agent. The spherical Pt nanoparticles of ~9 nm in diameter were deposited uniformly on the mesoporous support. These results suggested that mesoporous Ti0.7W0.3O₂ materials synthesized are promising catalyst supports to replace carbon-based supports for Proton-exchange membrane fuel cells.

Structurally Ordered Fe3Pt Nanoparticles on Robust Nitride Support as a High Performance Catalyst for the Oxygen Reduction Reaction

AbstractThe commercialization of fuel cell technologies requires a significant reduction in the amount of expensive platinum catalyst in the cathode while still maintaining high catalytic activity and stability. Herein a cost‐effective, highly durable, and efficient catalyst consisting of ordered Fe3Pt nanoparticles supported by mesoporous Ti0.5Cr0.5N (Fe3Pt/Ti0.5Cr0.5N) is demonstrated. The Fe3Pt/Ti0.5Cr0.5N catalyst exhibits a five‐fold increase in mass activity relative to a Pt/C catalyst at 0.9 V for the oxygen reduction reaction. More importantly, the catalyst shows a minimal loss of activity after 5000 potential cycles (9.7%). The enhanced activity of the ordered Fe3Pt/Ti0.5Cr0.5N catalyst, in combination with its enhanced stability, makes it very promising for the development of new cathode catalysts for fuel cells.

Furfural-Mediated Synthesis of Mesoporous Ti0.5Sn0.5O2 Solid-Solution Microspheres for Effective Photocatalytic Removal of As(III)

The development of a highly efficient photocatalyst for oxidizing and further removing toxic As(III) from the water environment remains a big challenge. Herein, mesoporous Ti0.5Sn0.5O2 (TSO-0.5) solid-solution microspheres are synthesized by a facile solvothermal method and followed by annealing. The mesoporous TSO-0.5 microspheres are systematically characterized in terms of the crystalline phases, morphological, optical, photoelectric, and photocatalytic properties using X-ray diffraction, scanning electron microscopy, N2 sorption–desorption, X-ray photoelectron spectroscopy, UV–vis diffuse reflectance spectroscopy, and electrochemical analysis. The characterizations show that TSO-0.5 is of well crystallinity, hierarchical mesoporosity, broad light responsive capacity, large surface area, and excellent photoelectric features. Under irradiation, the mesoporous TSO-0.5 microspheres exhibit ultrahigh photocatalytic activity for methyl orange (MO) degradation (0.537 min–1·m–2, ∼8 times that of TiO2) and As(...

High conductivity and surface area of Ti0.7W0.3O2 mesoporous nanostructures support for Pt toward enhanced methanol oxidation in DMFCs

For the first time, a novel Pt catalyst supported on mesoporous Ti0.7W0.3O2 nanoparticles, which exhibited superior advantages such as high conductivity (0.022 S/cm), large specific surface area (201.481 m2/g) and homogeneous morphology with 9 nm spherical-like particles, was prepared successfully via the rapid microwave-assisted polyol route. It is found that uniform 3 nm spherical-like Pt nano-forms were adhered homogeneous on the surface of Ti0.7W0.3O2. Intriguingly, the electrochemical surface area of Pt catalyst supported on mesoporous Ti0.7W0.3O2 was found to be around 90.05 m2/gPt, which is profoundly higher than ECSA value obtained from Pt/C (E-TEK) catalyst. Furthermore, as for methanol oxidation reaction measurement, the If/Ib ratio of the 20 wt % Pt/Ti0.7W0.3O2 catalyst was found to be approximately 2.33, which 2.5-folds higher than that of the commercial Pt/C (E-TEK) catalyst. Importantly, the chronoamperometry data also revealed that the 20 wt % Pt/Ti0.7W0.3O2 catalyst possessed the higher durability than the commercial 20 wt % Pt/C (E-TEK) catalyst. In addition, the successful synthesis of the 20 wt % Pt/Ti0.7W0.3O2 catalyst not only offers an attractive catalyst for fuel cell using methanol but also opens application potentials for solar cells, as well as biosensors.

Plasmonic gold deposited on mesoporous Ti Si1−O2 with isolated silica in lattice: An excellent photocatalyst for photocatalytic conversion of CO2 into methanol under visible light irradiation

Abstract Solar-driven chemical production of methanol from CO2 has become a hot topic of research due to high-value addition, with methanol as a product, as well as reduction of CO2 which is a greenhouse gas. Here we report gold nanoparticles deposited on mesoporous titania with isolated Si sites, which converted CO2 into methanol under visible light irradiation using LED light source. Si amount in titania lattice was optimized to obtain the best methanol yield. DFT calculation showed that Si sites incorporation was responsible for higher adsorption of CO2 onto the surface, which was further proved experimentally with CO2 uptake results. We achieved highest methanol production of 1835 μmolgcat−1 using Au/TixSi1−xO2 material with 28 mol% Si in titania lattice and 1.0 wt% Au nanoparticles deposition. The Au/TixSi1−xO2 photocatalysts were thoroughly characterized by inductively coupled plasma atomic emission (ICP-AES) spectrometry, powder X-ray diffraction (PXRD), field emission scanning electron microscopy (FE-SEM), high angle annular dark field-scanning transmission electron microscopic (HAADF-STEM), transmission electron microscopy (TEM), energy dispersive X-ray spectrometry (EDX), 29Si MAS NMR, UV-vis diffuse reflection spectroscopy (DRS), N2 sorption studies, CO2 uptake experiments, cyclic voltammetry (CV) and DFT calculations. The products were analyzed by GC-FID, GC–MS, and HPLC. The photocatalytic reaction was monitored using in situ FT-IR which established the formation of formaldehyde as an intermediate product which further converted into methanol.

Facile and Low-cost Synthesis of Mesoporous Ti-Mo Bi-metal Oxide Catalysts for Biodiesel Production from Esterification of Free Fatty Acids in Jatropha curcas Crude Oil.

Mesoporous Ti-Mo bi-metal oxides with various titanium-molybdenum ratios were successfully fabricated via a facile approach by using stearic acid as a low-cost template agent. thermal gravity (TG) /differential scanning calorimetry (DSC) analysis, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, nitrogen adsorption-desorption isotherm, NH3 temperature-programmed desorption (NH3-TPD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) measurements indicated these materials possessing mesoporous structure, sufficient pore size and high acid intensity. The catalytic performance of prepared catalysts was evaluated by esterification of free fatty acids in Jatropha curcas crude oil (JCCO) with methanol. The effects of various parameters on FFA conversion were investigated. The esterification conversion of 87.8% was achieved under the condition of 180°C, 2 h, methanol to JCCO molar ratio of 20:1 and 3.0 wt.% catalyst (relative to the weight of JCCO). The mesoporous catalysts were found to exhibit high activities toward the simultaneous esterification and transesterification of JCCO. Furthermore, the catalyst could be recovered with a good reusability.