Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of bivo4/rgo crystal with adsorption performance and preparation method thereof

A technology of adsorption performance and crystal, which is applied in the field of BiVO4/RGO crystal with adsorption performance and its preparation, can solve the problems of limited use, no patents and literature reports, crystal types and structures that are easy to change, and achieve high purity and improved Good conduction ability and crystal growth effect

Active Publication Date: 2018-08-28
SHAANXI UNIV OF SCI & TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of this pH value change, the type and structure of crystals are prone to change, resulting in the formation of pure phase monoclinic phase BiVO only in a certain range, such as neutral, weak acid or weak base. 4 , which limits its use
[0005] So far, BiVO with adsorption properties 4 / RGO crystal preparation method has not been reported, and there are no patents and literature reports on BiVO with adsorption properties 4 / RGO crystal preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of bivo4/rgo crystal with adsorption performance and preparation method thereof
  • A kind of bivo4/rgo crystal with adsorption performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1, 1mmoL Bi(NO 3 ) 3 ·5H 2 O dissolved in 9 mL of 1mol / L dilute HNO 3 , stirred for 30 minutes, then added 3 mL of oleic acid, 3 mL of n-heptane and 10 mL of acetone dropwise at a rate of 2 drops / second, stirred for 10 minutes, and then added 5 mL of 10 mol / L NaOH solution at a rate of 2 drops / second to form Precursor solution, the precursor solution was stirred at room temperature for 7h to prepare Bi 2 o 3 Precipitate, wash and dry the precipitate for later use;

[0035] Step 2, 115mL of concentrated H 2 SO 4 Put it in a conical flask, place the conical flask in a low-temperature thermostat, cool down to 0°C and keep the temperature for 35min; Add 5g of graphite, 5g of sodium nitrate and 15g of potassium permanganate in turn, stir at 0°C to obtain a mixed solution; then raise the temperature of the mixed solution to 25°C, stir and keep it warm for 3 hours; then raise the temperature of the mixed solution to 35°C, and continue stirring And keep it warm for...

Embodiment 2

[0044] Step 1, 1mmoL Bi(NO 3 ) 3 ·5H 2 O dissolved in 9 mL of 1mol / L dilute HNO 3 , stirred for 30 minutes, then added 3 mL of oleic acid, 3 mL of n-heptane and 10 mL of acetone dropwise at a rate of 2 drops / second, stirred for 10 minutes, and then added 5 mL of 10 mol / L NaOH solution at a rate of 2 drops / second to form Precursor solution, the precursor solution was stirred at room temperature for 6.5h to prepare Bi 2 o 3 Precipitate, wash and dry the precipitate for later use;

[0045] Step 2, 115mL of concentrated H 2 SO 4 Put it in a conical flask, place the conical flask in a low-temperature thermostat, cool down to 0°C and keep the temperature for 35min; Add 5g of graphite, 5g of sodium nitrate and 15g of potassium permanganate in turn, stir at 0°C to obtain a mixed solution; then raise the temperature of the mixed solution to 25°C, stir and keep it warm for 3 hours; then raise the temperature of the mixed solution to 35°C, and continue stirring And keep it warm f...

Embodiment 3

[0054] Step 1, 1mmoL Bi(NO 3 ) 3 ·5H 2 O dissolved in 9 mL of 1mol / L dilute HNO 3 , stirred for 30 minutes, then added 3 mL of oleic acid, 3 mL of n-heptane and 10 mL of acetone dropwise at a rate of 2 drops / second, stirred for 10 minutes, and then added 5 mL of 10 mol / L NaOH solution at a rate of 2 drops / second to form Precursor solution, the precursor solution was stirred at room temperature for 7.5h to prepare Bi 2 o 3 Precipitate, wash and dry the precipitate for later use;

[0055] Step 2, 115mL of concentrated H 2 SO 4 Put it in a conical flask, place the conical flask in a low-temperature thermostat, cool down to 0°C and keep the temperature for 35min; Add 5g of graphite, 5g of sodium nitrate and 15g of potassium permanganate in turn, stir at 0°C to obtain a mixed solution; then raise the temperature of the mixed solution to 25°C, stir and keep it warm for 3 hours; then raise the temperature of the mixed solution to 35°C, and continue stirring And keep it warm f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
quality scoreaaaaaaaaaa
quality scoreaaaaaaaaaa
Login to View More

Abstract

The invention discloses a BiVO4 / RGO crystal with adsorbability and a preparation method thereof. The preparation method comprises the steps of: preparing Bi2O3 and GO first, then preparing a GO suspension, a Bi2O3 suspension and an NH4VO3 solution, mixing the Bi2O3 suspension, NH4VO3 solution and GO suspension, then adding NaOH solutions with different concentrations to form precursor solutions with different ph values, and carrying out hydrothermal reaction. The GO sheets put off oxygen containing functional groups and are reduced to RGO, the number of layers and thickness of the RGO are reduced with increase of basicity, and the RGO and BiVO4 grow together to form a stable monoclinic phase BiVO4 / RGO crystal with a space structure group I2 / b(15). The method is suitable for stably generating BiVO4 / RGO crystals in different extreme environments, and the prepared BiVO4 / RGO crystal has good adsorbability and is helpful to application thereof in a photocatalytic reaction process or other practices.

Description

technical field [0001] The invention belongs to the field of functional materials, in particular to a BiVO with adsorption properties 4 / RGO crystal and its preparation method. Background technique [0002] BiVO 4 It is a non-toxic yellow dye, which is used in places that cause warnings in life, such as traffic facilities, etc., but the existing yellow inorganic dyes on the market are easy to fade, not resistant to corrosion, and most of them contain heavy metals such as chromium and lead. Its use is restricted. Therefore, BiVO 4 As a light yellow powder, it has the advantages of non-toxicity, good weather resistance, bright color and environmental friendliness. If it can be stably produced and satisfied in different acid-base environments, it can fundamentally solve the problems in production and production. People's health can be guaranteed by the poisonous use of pigments. [0003] Simultaneously BiVO 4 It is an important new type of semiconductor photocatalyst, whi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/30C30B29/02C30B7/10
CPCC30B7/10C30B29/02C30B29/30
Inventor 谈国强赵程程任慧君夏傲
Owner SHAANXI UNIV OF SCI & TECH