Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells
Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells
VIETNAM NATIONAL UNIVERSITY - HO CHI MINH CITYUNIV ERSITY OF TECHNOLOGYTAI THIEN HUYNHSYNTHESIS AND CHARACTERIZATION OF M-DOPED TIO2(Mw, II) MATERIALS Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells S AS SUPPORTS FOR PLATINUMNANOPARTICLES TO IMPROVE CATALYTIC ACTIVITYAND DURABILITY IN FUEL CELLSDOCTORAL DISSERTATIONHO CHI MINH CITY. 2020VIETNAM NATIONAL UNIVERSITY - IK) CHI MINH CITYUNIVERSITY OF TECHNOLOGYTAI THIEN HUYNHSYNTHESIS AND CHARACTERIZATION OF M-DOPED TIO,(Mw, Il) MATERIALS AS SUPPOR Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells TS FOR PLATINUMNANOPARTICLES TO IMPROVE CATALYTIC ACTIVITYAND DURABILITY IN FUEL CELLSMajor subject: Chemical EngineeringMajor subject code: 62520301ASynthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells
dvisor: 1. ASSOC. PROF. VAN Till TH ANTI no2. DR. SON TRUONG NGUYENiPLEDGEI pledge that this dissertation is my own research under the direction of thVIETNAM NATIONAL UNIVERSITY - HO CHI MINH CITYUNIV ERSITY OF TECHNOLOGYTAI THIEN HUYNHSYNTHESIS AND CHARACTERIZATION OF M-DOPED TIO2(Mw, II) MATERIALS Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells ny one source and in any form. The reference to the sources of documents (if any) has been cited and die reference sources are recorded as prescribed.SignatureTai Thien HuynhiiABSTRACTLow-temperature fuel cell systems have been drastically gaining attention because of then high energy production eff Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells iciency and near-zero emissions that can solve the serious reliance on fossil fuel. In fuel cell technology, electrocatalysis play an important role aSynthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells
t anode electrode and cathode electrode which directly impact the fuel cell performance. Nowadays, carbon-supported Platinum catalysts arc widely UtilVIETNAM NATIONAL UNIVERSITY - HO CHI MINH CITYUNIV ERSITY OF TECHNOLOGYTAI THIEN HUYNHSYNTHESIS AND CHARACTERIZATION OF M-DOPED TIO2(Mw, II) MATERIALS Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells chment and agglomeration of Pt nanocatalysts, sluggish kinetics of fuel anodic oxidation and oxygen reduction reaction (ORR), co poisoning of active sites of platinum nanocatalyst at even low co concentration (< 5 ppm) causing significant performance deterioration in the long-term operating conditio Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells n of fuel cells.Up to now, developing robust electrocatalysts is still a major challenge for further commercialization of fuel cell technologies. OneSynthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells
of the most effective approaches to solve these problems is to use non-carbon materials, which have emerged as promising alternative catalyst supportsVIETNAM NATIONAL UNIVERSITY - HO CHI MINH CITYUNIV ERSITY OF TECHNOLOGYTAI THIEN HUYNHSYNTHESIS AND CHARACTERIZATION OF M-DOPED TIO2(Mw, II) MATERIALS Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells tivity and stability of Pt-based catalysts can be significantly enhanced. Among carbon-free supports, titanium dioxide (TiO2) material has gained considerable attention in fuel cell application owing to superior electrochemical stability, non-loxicily and affordability. ITirthermorc, the strong meta Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells l-support interaction (so-called “SMSI”) between TiO; support and Pt nanocalalyst is a synergistic effect resulting in the significant enhancement ofSynthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells
both electrocatalytic activity and durability of this electrocatalyst. The intrinsic low electrical conductivity of ri()2, however, is a major hindranVIETNAM NATIONAL UNIVERSITY - HO CHI MINH CITYUNIV ERSITY OF TECHNOLOGYTAI THIEN HUYNHSYNTHESIS AND CHARACTERIZATION OF M-DOPED TIO2(Mw, II) MATERIALS Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells n as the best way to enhance both the electronic conductivity of TiO2 and electrochemical activity and durability of Pt-based catalysts for fuel cell application.iiiTo this end. I introduce the combination between Platinum nanocatalysts and M-doped TiO; (Mw. Ir) supports, which were successfully syn Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells thesized by means of one-pot synthesis without surfactants/stabilizers or further heat treatment, to assemble robust 20 wt. % PVTio.7Mo.3O2 (Mw, Ir) cSynthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells
atalysts for the methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR). Experimental results demonstrated that 20 wt. % Pt'M-doped TiOVIETNAM NATIONAL UNIVERSITY - HO CHI MINH CITYUNIV ERSITY OF TECHNOLOGYTAI THIEN HUYNHSYNTHESIS AND CHARACTERIZATION OF M-DOPED TIO2(Mw, II) MATERIALS Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells ted on mesoporous Tio 7W0 3O2, which exhibited high conductivity (2.2x10 2 s.cm’1) and large specific surface area (201.4S1 nr.g’1), was prepared successfully via rapid microwave-assisted polyol route. It is found that uniform 3 nm spherical-like Pt of nano-form adhered homogeneously on the surface Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells of T10.7W0 <0;. Intriguingly, the electrochemical surface area of the 20 wt. % PvTio.7Wo.3O2 was found to be -90 m2.g ‘Pt. which is profoundly higherSynthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells
than that of the commercial 20 wt. % Pt/C (E-TEK) catalyst. For MOR. the IfTb ratio of the 20 wt. % PVTio.7Wo.3O2 catalyst was found to be approximateVIETNAM NATIONAL UNIVERSITY - HO CHI MINH CITYUNIV ERSITY OF TECHNOLOGYTAI THIEN HUYNHSYNTHESIS AND CHARACTERIZATION OF M-DOPED TIO2(Mw, II) MATERIALS Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells the 20 wt. % PVTio.7Wo.3O2 catalyst possessed higher durability than the 20 wt. % Pt'C (E-TEK) catalyst. These aforementioned results indicated the much higher catalytic activity and better CO-poisoning tolerance toward MOR of the 20 wt. % Pt. Tio 7W0 3O2 electrocatalyst which could be due to the s Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells trong interaction (SMSI) between Pt and M-doped TiO; support leading to the weak adsorption of carbonaceous species on the active sites of Pt and thusSynthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells
increasing the catalyst’s activity and stability for the MOR in the direct methanol fuel cell.For the first time, novel Tio.7Iro.3O2 support was prepVIETNAM NATIONAL UNIVERSITY - HO CHI MINH CITYUNIV ERSITY OF TECHNOLOGYTAI THIEN HUYNHSYNTHESIS AND CHARACTERIZATION OF M-DOPED TIO2(Mw, II) MATERIALS Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells ic catalysts in low-temperature fuel cells. For starter, the electrochemical surface area (ECSA) of the 20 wt. % PưTiộ jlfo.jO; nanoparticles (NPs) catalyst was found to be -96.98 m’.g ‘Pt. which is higher the 20 wt. % Pt c (E-TEK) catalyst. For MOR, the superior catalytic activity and co tolerance Synthesis and characterization of m doped tio2 (m=w, ir) materials as supports for platinum nanoparticles to improve catalytic activity and durability in fuel cells of the 20 wt. % PVTio.7Iro.3O2 electrocatalyst compared to the 20 wt. % PVCivVIETNAM NATIONAL UNIVERSITY - HO CHI MINH CITYUNIV ERSITY OF TECHNOLOGYTAI THIEN HUYNHSYNTHESIS AND CHARACTERIZATION OF M-DOPED TIO2(Mw, II) MATERIALSVIETNAM NATIONAL UNIVERSITY - HO CHI MINH CITYUNIV ERSITY OF TECHNOLOGYTAI THIEN HUYNHSYNTHESIS AND CHARACTERIZATION OF M-DOPED TIO2(Mw, II) MATERIALSGọi ngay
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