CN114105203A - C-WO applied to two-electron oxygen reduction reaction3Nano material and preparation method thereof - Google Patents

C-WO applied to two-electron oxygen reduction reaction3Nano material and preparation method thereof Download PDF

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CN114105203A
CN114105203A CN202111315097.1A CN202111315097A CN114105203A CN 114105203 A CN114105203 A CN 114105203A CN 202111315097 A CN202111315097 A CN 202111315097A CN 114105203 A CN114105203 A CN 114105203A
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oxygen reduction
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胡觉
江浩
张利波
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Kunming University of Science and Technology
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Abstract

The invention relates to a c-WO applied to a two-electron oxygen reduction reaction3A nano material and a preparation method thereof belong to the technical field of two-electron oxygen reduction reaction. Ammonium tungstate and citric acid monohydrate are mixed according to the mass ratio of 10:1, mixing, adding deionized water, performing ultrasonic dispersion uniformly, stirring, slowly adding nitric acid until the solution is completely yellow, filtering, and drying in an oven at 70 ℃ to obtain a solid material; calcining the solid material to obtain gray black c-WO3And (3) a nano catalyst. The invention changes the electrocatalytic activity and selectivity of the transition metal oxide from the crystal structure and prepares excellent c-WO3Application of catalyst2e−ORR produces hydrogen peroxide. c-WO of the preparation3The nano-catalyst has high selectivity, activity and long-term stability for the production of hydrogen peroxide under the condition of 0.1M KOH.

Description

C-WO applied to two-electron oxygen reduction reaction3Nano material and preparation method thereof
Technical Field
The invention relates to a c-WO applied to a two-electron oxygen reduction reaction3A nano material and a preparation method thereof belong to the technical field of two-electron oxygen reduction reaction.
Background
H2O2Is an efficient and environment-friendly oxidant, has strong bleaching capability and oxidation capability, and has great application value. However H2O2Is prepared by a comparatively single and indirect synthesis method of comparatively complex anthraquinone. A small number of noble metal pairs H are reported2O2The catalyst shows ideal selectivity. Promotion of H by electrochemical Oxygen Reduction Reaction (ORR)2O2The production of (A) is an ideal preparation method, the process is mainly a two-electron transfer process, and very few noble metals such as Pt, Pd and Au show H2O2Good catalytic activity, but the large-scale industrialization of the catalyst is limited by the small amount of precious metal reserve and high price (2 e)-ORR) is H2O2Provides a promising alternative route, and the route can effectively solve the problems related to most direct synthesis routes and indirect anthraquinone synthesis routes. Thus pair H2O2A precious metal substitute with good catalytic benefits has attracted extensive attention. The most active catalysts at present are platinum group metal based reactions, which still suffer considerable energy loss due to slow ORR kinetics. Meanwhile, due to scarcity and high cost of noble metal elements, larger-scale research and application of the noble metal elements are limited. Transition metal monatomic catalysts, transition metal sulfides and inorganic non-noble metal carbon-based catalysts have attracted considerable attention in recent years, and are reported in 2e-ORR has shown great potential in the production of hydrogen peroxide. For example, O, N, F, B, etc. doped graphene and carbon nanotubes have gained fairly widespread use, in which a series of transition metal atoms (e.g., Co, Ni, Fe, Mn, Cu, etc.) can be intercalated to produce stable monatomic catalysts. The monatomic catalyst is gradually a hot point of research due to the dispersion characteristic of active metal sites (the monatomic catalyst is dispersed), the mass activity is improved by improving the atom utilization rate, and the monatomic catalyst adsorbs O due to the isolation of the monatomic catalyst atomic sites2End adsorption is generally adopted instead of side adsorption, and reduction is realizedThe possibility of O-O breakage is reduced. M-N-C (M represents transition metal elements including Fe, Mn, Co, Ni, Cu and the like) monoatomic catalyst is a nitrogen-doped carbon-based material with atomic-scale metal cations dispersed and shows high H2O2Selectivity and low H2O2And (4) reducing reaction activity.
The transition metal-based catalyst is a promising material for replacing a noble metal catalyst due to the characteristics of environmental friendliness, large reserve capacity, good thermal stability, low cost and the like. The research of the transition metal oxide can be traced back to a material which is in a transition from a blocky or electro-deposition film to a 2D nano structure and a 3D nano structure to a hollow porous structure half a century ago, and a new thought and way are provided for developing a replaceable precious metal catalyst in the field of electro-catalysis. Unfortunately, transition metal-based catalysts are less selective and catalytically active than Pt for hydrogen peroxide, which makes it necessary to further adjust the electron cloud density between the transition metal oxides and the exposure of the active sites to further increase the hydrogen peroxide production capacity.
Disclosure of Invention
Aiming at the problems and the defects of the prior art, the invention provides a c-WO applied to a two-electron oxygen reduction reaction3A nano material and a preparation method thereof. The invention changes the electrocatalytic activity and selectivity of the transition metal oxide from the crystal structure and prepares excellent c-WO3Application of catalyst to 2e-ORR produces hydrogen peroxide. c-WO of the preparation3Application of nano-catalyst to 2e-ORR reaction, and has high selectivity, activity and long-term stability for hydrogen peroxide production under 0.1M KOH condition. The invention is realized by the following technical scheme.
C-WO applied to two-electron oxygen reduction reaction3Nanomaterial of the WO3The nano-catalyst has the following crystal structure:
Figure BDA0003343385650000021
wherein each apex position represents an oxygen atom and the bulky one represents a metallic tungsten atom.
C-WO applied to two-electron oxygen reduction reaction3The preparation method of the nano material comprises the following specific steps:
step 1, mixing ammonium tungstate and citric acid monohydrate according to a mass ratio of 10:1, uniformly mixing, adding deionized water, uniformly dispersing by ultrasonic, stirring, slowly adding nitric acid until the solution is completely yellow, stirring for 24-36h, filtering, and drying in an oven at 70 ℃ to obtain a solid material;
step 2, calcining the solid material obtained in the step 1 at the temperature of 200-220 ℃ for 12-18h to obtain gray black c-WO3And (3) a nano catalyst.
The solid-to-liquid ratio of ammonium tungstate to deionized water is 1: 30 g/mL.
The nitric acid is concentrated nitric acid with the mass percent of 65-68%, and the slow adding speed of the nitric acid is 3-5 mL/min.
C-WO applied to two-electron oxygen reduction reaction3The nano material can be applied to the preparation of hydrogen peroxide in a two-electron oxygen reduction process.
The citric acid monohydrate is used as surfactant and stabilizer.
c-WO mentioned above3The nano material can be applied to a double-electron oxygen reduction reaction process, and the preparation method of the electrode comprises the following steps: at 10mg of c-WO3Adding 50 mu L of 5% Nafion solution and 950 mu L of deionized water into the catalyst, and then carrying out water bath ultrasonic treatment to uniformly disperse the solution into suspension; then 5. mu.L of the suspension was added dropwise to a disc area of 0.2475cm2The surface of the disk electrode on the RRDE glassy carbon electrode of (a); naturally drying the electrode at room temperature before measurement; the content of the catalyst is 0.2mg/cm2. The yield of hydrogen peroxide was further measured by adding 50. mu.L of the suspension dropwise to 1X 3cm of the surface-cleaned suspension2The catalyst is uniformly loaded on the carbon paper with the area of 1cm2On carbon paper. The electrolysis experiments were then carried out in a two-compartment H-cell containing 25ml of electrolyte.
The invention has the beneficial effects that:
(1) the invention prepares a novel transition metal oxide c-WO3A nanomaterial catalyst.
(2) Transition metal oxide c-WO prepared by the invention3The nano material catalyst has higher selectivity and catalytic activity for the generation of hydrogen peroxide under the condition of 0.1M KOH, and keeps good stability.
Drawings
FIG. 1 shows c-WO prepared in example 1 of the present invention3XRD diffraction pattern of the nano material catalyst;
FIG. 2 shows h-WO prepared in comparative example 13XRD diffraction pattern of the nano material;
FIG. 3 shows γ -WO prepared in comparative example 23XRD diffraction pattern of the nano material;
FIG. 4 shows c-WO prepared in example 1 of the present invention3FESEM image of the nano material catalyst under 5um and 500 nm;
FIG. 5 shows h-WO prepared in comparative example 13FESEM image of the nano material under 5um and 500 nm;
FIG. 6 shows γ -WO prepared in comparative example 23FESEM image of the nano material under 5um and 500 nm;
FIG. 7 shows c-WO prepared in example 1 of the present invention3High Resolution Transmission Electron Microscopy (HRTEM) images at 5nm of the nanomaterial samples.
FIG. 8 shows h-WO prepared in comparative example 13High Resolution Transmission Electron Microscopy (HRTEM) images at 5nm of the nanomaterial samples.
FIG. 9 shows γ -WO prepared in comparative example 23High Resolution Transmission Electron Microscopy (HRTEM) images at 5nm of the nanomaterial samples.
FIG. 10 shows c-WO prepared in example 1 of the present invention3High resolution X-ray photoelectron spectroscopy (XPS) spectra of W4f and O1s of the nanomaterial sample were compared.
FIG. 11 shows h-WO prepared in comparative example 13High resolution X-ray photoelectron spectroscopy (XPS) spectra of W4f and O1s of the nanomaterial sample were compared.
FIG. 12 shows γ -WO prepared in comparative example 23High resolution X-ray photoelectron spectroscopy (XPS) spectra of W4f and O1s of the nanomaterial sample were compared.
FIG. 13 shows c-WO prepared in example 1 of the present invention3h-WO prepared in comparative example 13And gamma-WO prepared in comparative example 23Cyclic voltammograms under nitrogen and oxygen saturated, 0.1M KOH conditions, respectively.
FIG. 14 shows c-WO prepared in example 1 of the present invention3h-WO prepared in comparative example 13And gamma-WO prepared in comparative example 23Polarization diagram under oxygen saturation, 0.1M KOH.
FIG. 15 shows c-WO prepared in example 1 of the present invention3h-WO prepared in comparative example 13And gamma-WO prepared in comparative example 23Oxygen saturation, selectivity profile for hydrogen peroxide at 0.1M KOH.
FIG. 16 shows c-WO prepared in example 1 of the present invention3h-WO prepared in comparative example 13And gamma-WO prepared in comparative example 23Graph of faradaic efficiency and number of transferred electrons for hydrogen peroxide under 0.1M KOH saturated with oxygen.
FIG. 17 shows c-WO prepared in example 1 of the present invention3h-WO prepared in comparative example 13And gamma-WO prepared in comparative example 23Oxygen saturation, 0.1M KOH, yields of hydrogen peroxide at 0.1V vs. rhe, 0.3V vs. rhe, and 0.5V vs. rhe, respectively.
FIG. 18 shows c-WO prepared in example 1 of the present invention3h-WO prepared in comparative example 13And gamma-WO prepared in comparative example 23Graph of hydrogen peroxide concentration accumulated for 24 hours at 0.1V vs. rhe voltage with oxygen saturation, 0.1M KOH.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Example 1
The method is applied to two-electron oxygen reduction reactionc-WO3Nanomaterial of the WO3The nano-catalyst has the following crystal structure:
Figure BDA0003343385650000051
wherein each apex position represents an oxygen atom and the bulky one represents a metallic tungsten atom.
The c-WO applied to the two-electron oxygen reduction reaction3The preparation method of the nano material comprises the following specific steps:
step 1, mixing 2.31g of ammonium tungstate and 0.23g of citric acid monohydrate according to a mass ratio of 10:1, mixing the raw materials in a 100mL beaker, adding 70mL deionized water (the solid-to-liquid ratio of ammonium tungstate to the deionized water is about 1: 30g/mL), dispersing the mixture uniformly by ultrasonic waves (the ultrasonic frequency is 28-40KHz), stirring the mixture, slowly adding nitric acid (the nitric acid is concentrated nitric acid with the mass percentage of 65-68%, and the slow adding rate of the nitric acid is 3mL/min) until the solution is completely yellow, stirring the mixture for 24 hours, filtering the mixture, and drying the mixture in an oven at 70 ℃ for 24 hours to obtain a solid material;
step 2, calcining the solid material obtained in the step 1 at 200 ℃ for 12 hours to obtain gray black c-WO3And (3) a nano catalyst.
Comparative example 1
h-WO3The preparation method comprises the following specific steps:
step 1, dissolving 0.38g of tungstic acid in 27mL of deionized water, and then adding 0.5g of thiourea; the suspension was transferred to a 50mL teflon lined stainless steel autoclave and heated at 180 ℃ for 24 h.
And 2, cooling the reaction product obtained in the step 1 to room temperature, separating precipitates by using a centrifugal machine, and washing the precipitates for multiple times by using deionized water and ethanol. Finally, drying at 60 ℃ for 12 hours gave hexagonal tungsten trioxide (h-WO)3) Nanosheets.
h-WO3The nano-catalyst has the following crystal structure:
Figure BDA0003343385650000061
wherein each apex position represents an oxygen atom and the bulky one represents a metallic tungsten atom.
Comparative example 2
γ-WO3The preparation method comprises the following specific steps:
step 1, adding Na2WO4·2H2Adding O (1mmol) into 20mL of deionized water, stirring for 10min to form a solution A, dissolving glycine (9mmol) into 15mL of deionized water, then adding 5mL of 2M hydrochloric acid aqueous solution downwards under magnetic stirring, stirring for 10min to form a solution B, dropping the solution B into the solution A, stirring for 30min, then sealing with a polytetrafluoroethylene-lined autoclave, heating to 180 ℃ and keeping the temperature for 10 h.
Step 2, cooling the reaction product obtained in the step 1 to room temperature, performing suction filtration through an organic microporous filter membrane, sequentially washing a filtrate with deionized water and an ethanol organic solvent, drying at 80 ℃ for 3 hours, and finally heating at 600 ℃ for 1 hour to obtain yellow monoclinic tungsten trioxide (gamma-WO)3)。
γ-WO3The nano-catalyst has the following crystal structure:
Figure BDA0003343385650000062
wherein each apex position represents an oxygen atom and the bulky one represents a metallic tungsten atom.
c-WO prepared in example 13Nanomaterial, h-WO prepared in comparative example 13Nanocatalytic, gamma-WO prepared in comparative example 23Carrying out structural and morphological characterization on the nano material: from FIGS. 1,2,3, using X-ray powder diffraction (XRD) on different crystal forms of WO3(c-WO3、h-WO3And gamma-WO3) The product was characterized. In FIG. 1, typical XRD peaks were observed at 23.966, 34.048, 49.041, 55.258 and 61.075, corresponding to c-WO, respectively3(JCPDS: 41-0905) planes (100), (110), (200), (210) and (211). FIG. 2 is h-WO3Has a powder XRD spectrum, and typical XRD peaks observed at 13.950, 23.197, 28.113, 33.832, 36.757 and 49.755 respectively correspond to those of h-WO3(JCPDS: 85-2460) (100), (002), (200), (112), (202) and (220) planes. FIG. 3 is a view of gamma-WO3Has a powder XRD spectrum, and typical XRD peaks observed at 23.119, 23.586, 24.380, 34.155, 49.948 and 55.957 respectively correspond to gamma-WO3(JCPDS: 43-1035) of the (002), (020), (200), (202), (140) and (420) planes. The comparison between different XRD patterns and a standard card completely meets the requirements, and the successful preparation of the tungsten trioxide with different crystal forms is shown. FIG. 4, Scanning Electron Microscope (SEM) image for c-WO determination3Nanoplatelets with average diameters and thicknesses of about 120nm and 10nm, respectively, are shown. As shown in FIG. 5, Scanning Electron Microscope (SEM) images show all of the h-WO3All of which are stacked nanosheet structures having an average diameter of 110 nm. As shown in FIG. 6, Scanning Electron Microscope (SEM) images show all of the γ -WO3Are all nano-rod-shaped structures with the average diameter of 30 nm.
See FIG. 7, c-WO3The significant lattice fringes can be clearly seen in the HRTEM of (g) indicating better crystallinity. The spacing of the fringes on the plane is 0.37nm, and c-WO3The (100) crystal plane of (A) corresponds well.
See FIG. 8, h-WO3Can clearly see the obvious crystal lattice fringes, and the crystal lattice fringes with the plane spacing of 0.38nm correspond to h-WO3(002) crystal face of (a).
FIG. 9, gamma-WO3The significant lattice fringes can be clearly seen in the HRTEM image of (A), the lattice fringes with a plane spacing of 0.38nm correspond to gamma-WO3(002) crystal face of (a).
WO was further analyzed by XPS3Chemical composition and state of the sample. XPS analysis shows that WO in different crystal forms3W and O elements are present in the sample and the atomic ratio is close to 3: 1, all tungsten trioxide samples have no introduction of impurities.
FIG. 10, c-WO3W4f5/2And W4f7/2Two peaks at 37.97 and 35.83eV, respectively, which are both related to W6+The states are consistent. W6+W4f of7/2And W4f5/2The binding energy gap is 2.1eV, which is consistent with the literature report, and indicates that the c-WO3Middle W6+Is in a main valence state. And gamma-WO3In contrast, c-WO3W4f of7/2And W4f5/2Splitting peak fractionPositive shifts of 0.23eV and 0.25eV, respectively, occur. Is shown in c-WO3Strong coupling occurs between layers, and the interaction of electrons is stronger, so that the interlayer coupling effect is more obvious. c-WO3The enhancement of the coupling between atomic layers provides a favorable surface electron structure, promoting H2O2And (4) generating.
See FIG. 11, h-WO3W4f5/2And W4f7/2Two peaks at 37.80 and 35.65eV, respectively, which are both related to W6+The states are consistent.
FIG. 12, gamma-WO3W4f5/2And W4f7/2Two peaks at 37.72 and 35.60eV, respectively, which are both related to W6+The states are consistent, which indicates that the valence states of the tungsten trioxide are consistent.
As 2e-Application of ORR reaction in preparation of hydrogen peroxide catalyst:
samples tested for 2e by Cyclic Voltammetry (CV) and Linear Sweep Voltammetry (LSV)-The electrocatalytic performance of the ORR reaction was tested in a three-electrode cell system, oxygen saturated 0.1M KOH solution, at room temperature.
As shown in FIG. 13, the selectivity and activity of hydrogen peroxide were first examined using a rotating disk changing electrode, 0.2mg cm in 0.1M KOH electrolyte-2The catalyst is deposited on the surface of the disc electrode of the rotating disc electrode to evaluate the ORR catalytic performance of the tungsten trioxide with different crystal forms. Are each at N2And O2Saturated 0.1M KOH electrolyte at 50mV s-1To obtain c-WO at a low scanning rate3、h-WO3And gamma-WO3Cyclic Voltammetry (CV) curves of the catalyst. The results show that there is a strong oxygen reduction peak in oxygen saturated electrolytes, but not in nitrogen. The oxidation peak near 0.6V (VS. RHE) is attributed to H2O2By oxidation of (2), indicating H in the ORR process2O2The preparation of (1) was successful.
FIG. 14, c-WO3Shows the strongest initial potential (defined as 0.01mA cm)-2Potential at current density). At 0.4V vs. RHE, c-WO3The catalyst provides a similar JdiskBih-WO3(1.50mA cm-2) About 13% higher. However, with H2O2The loop currents involved in the synthesis are very different, c-WO3The loop current of (2) was 0.121mA (0.1V vs. RHE), which is h-WO3And gamma-WO31.55 times and 1.57 times of that of the compound, indicating that c-WO3To H2O2The highest selectivity.
FIG. 15, c-WO, based on catalyst supported on RRDE discs, was calculated3To H2O2Selectivity of (2). c-WO3RHE maintained about 90% selectivity at 0.4V vs. far higher than h-WO3(71%) and gamma-WO3(78%) indicating that ORR is via a two-electron pathway in c-WO3The above occurs.
As shown in FIG. 16, at 0.1-0.5V vs. RHE, we calculated the Faraday efficiencies and the number of transferred electrons of different crystal forms of tungsten trioxide, respectively, wherein c-WO3The Faraday efficiency was 80% in all samples and the number of transferred electrons was about 2.23, indicating that in actual production, c-WO3Can maintain good production capacity for hydrogen peroxide.
As shown in FIG. 17, we further tested the yield of tungsten trioxide in three different crystalline forms at different voltages, wherein c-WO is at 0.1V vs. RHE3It showed 179mmol g-1h-1The yield of the product is much higher than that of h-WO3And gamma-WO3Shows the yield of c-WO3Can more quickly accumulate high-concentration hydrogen peroxide in practical application.
As shown in FIG. 18, tungsten trioxide in different crystal forms was applied to practical production of hydrogen peroxide, wherein c-WO3The accumulation of 85.7mM hydrogen peroxide in a 25ml electrolytic cell for 24 hours is far superior to existing tungsten trioxide and most carbon-based catalysts. At the same time, the yield is almost not attenuated within 24 hours, which shows the excellent stability, which indicates that the c-WO3Can be applied to the actual production of hydrogen peroxide.
c-WO of the invention3Catalyst for 2e-The reaction for preparing hydrogen peroxide by ORR has excellent catalytic activity and selectivity, and can meet the concentration of hydrogen peroxide required by daily life. The preparation method of the tungsten trioxide is simple and does not needHarsh experimental conditions.
Example 2
The c-WO applied to the two-electron oxygen reduction reaction3The preparation method of the nano material comprises the following specific steps:
step 1, mixing 2.31g of ammonium tungstate and 0.23g of citric acid monohydrate according to a mass ratio of 10:1, mixing the raw materials in a 100mL beaker, adding deionized water (the solid-to-liquid ratio of ammonium tungstate to the deionized water is about 1: 30g/mL), dispersing the mixture uniformly by ultrasonic (the ultrasonic frequency is 20-40KHz units), stirring and adding nitric acid (the nitric acid is concentrated nitric acid with the mass percentage of 65-68%, and the slow adding rate of the nitric acid is 5mL/min) slowly until the solution is completely yellow, stirring for 24 hours, filtering, and drying in an oven at 70 ℃ for 24 hours to obtain a solid material;
step 2, calcining the solid material obtained in the step 1 at 220 ℃ for 15 hours to obtain gray black c-WO3And (3) a nano catalyst.
Example 3
The c-WO applied to the two-electron oxygen reduction reaction3The preparation method of the nano material comprises the following specific steps:
step 1, mixing 2.31g of ammonium tungstate and 0.23g of citric acid monohydrate according to a mass ratio of 10:1, placing the mixture in a 100mL beaker, adding deionized water (the solid-to-liquid ratio of the ammonium tungstate to the deionized water is about 1: 30g/mL), dispersing the mixture uniformly by ultrasonic waves (the ultrasonic frequency is 28-40KHz), stirring the mixture, slowly adding nitric acid (the nitric acid is concentrated nitric acid with the mass percentage of 65-68%, and the slow adding rate of the nitric acid is 4mL/min) until the solution is completely yellow, stirring the mixture for 24 hours, filtering the mixture, and drying the mixture for 24 hours in an oven at 70 ℃ to obtain a solid material;
step 2, calcining the solid material obtained in the step 1 at 210 ℃ for 18h to obtain gray black c-WO3And (3) a nano catalyst.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit and scope of the present invention.

Claims (5)

1. C-WO applied to two-electron oxygen reduction reaction3Nanomaterial characterized by: the WO3The nano-catalyst has the following crystal structure:
Figure 273342DEST_PATH_IMAGE001
，
wherein each apex position represents an oxygen atom and the bulky one represents a metallic tungsten atom.
2. c-WO for two-electron oxygen reduction reaction according to claim 13The preparation method of the nano material is characterized by comprising the following specific steps of:
step 1, mixing ammonium tungstate and citric acid monohydrate according to a mass ratio of 10:1, uniformly mixing, adding deionized water, uniformly dispersing by ultrasonic, stirring, slowly adding nitric acid until the solution is completely yellow, stirring for 24-36h, filtering, and drying in an oven at 70 ℃ to obtain a solid material;
step 2, calcining the solid material obtained in the step 1 at the temperature of 200-220 ℃ for 12-18h to obtain gray black c-WO3And (3) a nano catalyst.
3. c-WO for two-electron oxygen reduction reaction according to claim 13Nanomaterial characterized by: the solid-to-liquid ratio of ammonium tungstate to deionized water is 1: 30 g/mL.
4. c-WO for two-electron oxygen reduction reaction according to claim 13Nanomaterial characterized by: the nitric acid is concentrated nitric acid with the mass percent of 65-68%, and the slow adding speed of the nitric acid is 3-5 mL/min.
5. c-WO for two-electron oxygen reduction reaction according to claim 13The nano material can be applied to the preparation of hydrogen peroxide in a two-electron oxygen reduction process.
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CN115838943A (en) * 2022-11-30 2023-03-24 中国石油大学(华东) Preparation method of catalyst for producing hydrogen peroxide through electrocatalysis, product and application thereof
CN116573673A (en) * 2023-06-08 2023-08-11 翁百成 Preparation method of nano tungsten trioxide

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN115448367A (en) * 2022-08-31 2022-12-09 浙江大学 Preparation method of fulvic acid catalyst and application of fulvic acid catalyst in piezoelectric catalytic hydrogen peroxide
CN115448367B (en) * 2022-08-31 2024-01-05 浙江大学 Preparation method of yellow-tungstic acid catalyst and application of yellow-tungstic acid catalyst in piezocatalysis of hydrogen peroxide
CN115838943A (en) * 2022-11-30 2023-03-24 中国石油大学(华东) Preparation method of catalyst for producing hydrogen peroxide through electrocatalysis, product and application thereof
CN115838943B (en) * 2022-11-30 2023-10-17 中国石油大学(华东) Preparation method of catalyst for electrocatalytic production of hydrogen peroxide, product and application thereof
CN116573673A (en) * 2023-06-08 2023-08-11 翁百成 Preparation method of nano tungsten trioxide

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