Patent
US 10,737,952METHOD FOR INITIATING A GRAPHENE OXIDE THROUGH REDUCTION BY A REDUCTANT TO CONTROLLABLY RELEASE ORGANIC COMPOUNDS
DONGQIANG ZHU
US
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US 10,737,952Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1, the method for initiating a graphene oxide through reduction by a reductant to controllably release organic compounds comprises the following steps: …
FIG. 5 d is the adsorption isotherm of 4-ch l oroaniline on graphene oxide and reduced graphene oxide; The liquid phase concentration (Cw) and the solid phase …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for initiating a graphene oxide through reduction by a reductant to controllably release organic compounds, comprising the following steps: (1) mixing a certain amount of the graphene oxide with a certain concentration of a buffer solution to prepare a stock solution; (2) adding the stock solution to a sewage containing a certain concentration of organic contaminants under stirring condition, to conduct adsorption equilibrium for 24 h; (3) conducting solid-liquid separation, adding the graphene oxide to which the organic contaminants adsorbed obtained by separation to a pure water, and introducing a certain amount of N 2 into the pure water to remove the dissolved oxygen from the pure water; (4) adding a certain amount of the reductant to reduce the graphene oxide so as to controllably release the adsorbed organic contaminants into the pure water; (5) conducting sequential batch kinetics experiments and sampling by passing through a membrane of 0.22 p m at certain time intervals, and determining a concentration of the organic contaminants in the pure water by high performance liquid chromatography (HPLC).
The method according to claim 1, wherein the mass ratio of the graphene oxide and the buffer solution is 1: 8-10.
The method according to claim 1, wherein the buffer solution is 50 mM Tris-HCl, pH 7.4-7.5.
The method according to claim 1, wherein the mass ratio of the organic contaminants and the stock solution in step (2) is 1: 4x 10 5 -7 x 1 0 5.
The method according to claim 1, wherein the reductant in step (4) is any one of sodium sulfide (Na 2 S), 1,4-dithiothreitol (DTT), and L-cysteine (Cysteine).
The method according to claim 1, wherein the oxide to which the organic contaminants adsorbed
The method according to claim 1, wherein the organic contaminants adsorbed and the pure water
The method according to claim 1, wherein the in step (4) is subject to filter and concentration for small molecular size.
The method according to claim 1, wherein the chlorophenol, 4-ch l oroaniline and chlorobenzene. mass ratio of the reductant and the graphene in step (4) is 1: 20-40. mass ratio of the graphene oxide to which the in step (4) is 1 20-80. pure water containing the organic contaminants selective recovery of organic contaminants of organic contaminant is any one of 4 -
Embodiments described in the patent, grouped by the materials and process steps they use.
6 materials1 process step
Sewage containing 4-chlorophenol treated with graphene oxide prepared by Hummer method. GO dispersed and mixed with 50 mM Tris-HCl pH 7.5 at mass ratio 1:9. 4-chlorophenol added to tap water at mass ratio 1:4.3×10⁵ to give 18.4 µmol/L sewage. Stock solution added under stirring for 24 h adsorption equilibrium at 25°C. After solid-liquid separation, solid phase mixed with pure water at mass ratio 1:45; N₂ introduced at 30 mL/min for 30 min to remove dissolved oxygen. Reductant (Na₂S, DTT, or Cysteine) then added to initiate reduction and release of 4-chlorophenol into pure water.
Materials described outside the worked examples.
organic contaminants
4-chloroaniline
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,737,952Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1, the method for initiating a graphene oxide through reduction by a reductant to controllably release organic compounds comprises the following steps: …
FIG. 5 d is the adsorption isotherm of 4-ch l oroaniline on graphene oxide and reduced graphene oxide; The liquid phase concentration (Cw) and the solid phase …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for initiating a graphene oxide through reduction by a reductant to controllably release organic compounds, comprising the following steps: (1) mixing a certain amount of the graphene oxide with a certain concentration of a buffer solution to prepare a stock solution; (2) adding the stock solution to a sewage containing a certain concentration of organic contaminants under stirring condition, to conduct adsorption equilibrium for 24 h; (3) conducting solid-liquid separation, adding the graphene oxide to which the organic contaminants adsorbed obtained by separation to a pure water, and introducing a certain amount of N 2 into the pure water to remove the dissolved oxygen from the pure water; (4) adding a certain amount of the reductant to reduce the graphene oxide so as to controllably release the adsorbed organic contaminants into the pure water; (5) conducting sequential batch kinetics experiments and sampling by passing through a membrane of 0.22 p m at certain time intervals, and determining a concentration of the organic contaminants in the pure water by high performance liquid chromatography (HPLC).
The method according to claim 1, wherein the mass ratio of the graphene oxide and the buffer solution is 1: 8-10.
The method according to claim 1, wherein the buffer solution is 50 mM Tris-HCl, pH 7.4-7.5.
The method according to claim 1, wherein the mass ratio of the organic contaminants and the stock solution in step (2) is 1: 4x 10 5 -7 x 1 0 5.
The method according to claim 1, wherein the reductant in step (4) is any one of sodium sulfide (Na 2 S), 1,4-dithiothreitol (DTT), and L-cysteine (Cysteine).
The method according to claim 1, wherein the oxide to which the organic contaminants adsorbed
The method according to claim 1, wherein the organic contaminants adsorbed and the pure water
The method according to claim 1, wherein the in step (4) is subject to filter and concentration for small molecular size.
The method according to claim 1, wherein the chlorophenol, 4-ch l oroaniline and chlorobenzene. mass ratio of the reductant and the graphene in step (4) is 1: 20-40. mass ratio of the graphene oxide to which the in step (4) is 1 20-80. pure water containing the organic contaminants selective recovery of organic contaminants of organic contaminant is any one of 4 -
Embodiments described in the patent, grouped by the materials and process steps they use.
6 materials1 process step
Sewage containing 4-chlorophenol treated with graphene oxide prepared by Hummer method. GO dispersed and mixed with 50 mM Tris-HCl pH 7.5 at mass ratio 1:9. 4-chlorophenol added to tap water at mass ratio 1:4.3×10⁵ to give 18.4 µmol/L sewage. Stock solution added under stirring for 24 h adsorption equilibrium at 25°C. After solid-liquid separation, solid phase mixed with pure water at mass ratio 1:45; N₂ introduced at 30 mL/min for 30 min to remove dissolved oxygen. Reductant (Na₂S, DTT, or Cysteine) then added to initiate reduction and release of 4-chlorophenol into pure water.
Materials described outside the worked examples.
organic contaminants
4-chloroaniline
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,737,952Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1, the method for initiating a graphene oxide through reduction by a reductant to controllably release organic compounds comprises the following steps: …
FIG. 5 d is the adsorption isotherm of 4-ch l oroaniline on graphene oxide and reduced graphene oxide; The liquid phase concentration (Cw) and the solid phase …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for initiating a graphene oxide through reduction by a reductant to controllably release organic compounds, comprising the following steps: (1) mixing a certain amount of the graphene oxide with a certain concentration of a buffer solution to prepare a stock solution; (2) adding the stock solution to a sewage containing a certain concentration of organic contaminants under stirring condition, to conduct adsorption equilibrium for 24 h; (3) conducting solid-liquid separation, adding the graphene oxide to which the organic contaminants adsorbed obtained by separation to a pure water, and introducing a certain amount of N 2 into the pure water to remove the dissolved oxygen from the pure water; (4) adding a certain amount of the reductant to reduce the graphene oxide so as to controllably release the adsorbed organic contaminants into the pure water; (5) conducting sequential batch kinetics experiments and sampling by passing through a membrane of 0.22 p m at certain time intervals, and determining a concentration of the organic contaminants in the pure water by high performance liquid chromatography (HPLC).
The method according to claim 1, wherein the mass ratio of the graphene oxide and the buffer solution is 1: 8-10.
The method according to claim 1, wherein the buffer solution is 50 mM Tris-HCl, pH 7.4-7.5.
The method according to claim 1, wherein the mass ratio of the organic contaminants and the stock solution in step (2) is 1: 4x 10 5 -7 x 1 0 5.
The method according to claim 1, wherein the reductant in step (4) is any one of sodium sulfide (Na 2 S), 1,4-dithiothreitol (DTT), and L-cysteine (Cysteine).
The method according to claim 1, wherein the oxide to which the organic contaminants adsorbed
The method according to claim 1, wherein the organic contaminants adsorbed and the pure water
The method according to claim 1, wherein the in step (4) is subject to filter and concentration for small molecular size.
The method according to claim 1, wherein the chlorophenol, 4-ch l oroaniline and chlorobenzene. mass ratio of the reductant and the graphene in step (4) is 1: 20-40. mass ratio of the graphene oxide to which the in step (4) is 1 20-80. pure water containing the organic contaminants selective recovery of organic contaminants of organic contaminant is any one of 4 -
Embodiments described in the patent, grouped by the materials and process steps they use.
6 materials1 process step
Sewage containing 4-chlorophenol treated with graphene oxide prepared by Hummer method. GO dispersed and mixed with 50 mM Tris-HCl pH 7.5 at mass ratio 1:9. 4-chlorophenol added to tap water at mass ratio 1:4.3×10⁵ to give 18.4 µmol/L sewage. Stock solution added under stirring for 24 h adsorption equilibrium at 25°C. After solid-liquid separation, solid phase mixed with pure water at mass ratio 1:45; N₂ introduced at 30 mL/min for 30 min to remove dissolved oxygen. Reductant (Na₂S, DTT, or Cysteine) then added to initiate reduction and release of 4-chlorophenol into pure water.
Materials described outside the worked examples.
organic contaminants
4-chloroaniline
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,737,952Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1, the method for initiating a graphene oxide through reduction by a reductant to controllably release organic compounds comprises the following steps: …
FIG. 5 d is the adsorption isotherm of 4-ch l oroaniline on graphene oxide and reduced graphene oxide; The liquid phase concentration (Cw) and the solid phase …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for initiating a graphene oxide through reduction by a reductant to controllably release organic compounds, comprising the following steps: (1) mixing a certain amount of the graphene oxide with a certain concentration of a buffer solution to prepare a stock solution; (2) adding the stock solution to a sewage containing a certain concentration of organic contaminants under stirring condition, to conduct adsorption equilibrium for 24 h; (3) conducting solid-liquid separation, adding the graphene oxide to which the organic contaminants adsorbed obtained by separation to a pure water, and introducing a certain amount of N 2 into the pure water to remove the dissolved oxygen from the pure water; (4) adding a certain amount of the reductant to reduce the graphene oxide so as to controllably release the adsorbed organic contaminants into the pure water; (5) conducting sequential batch kinetics experiments and sampling by passing through a membrane of 0.22 p m at certain time intervals, and determining a concentration of the organic contaminants in the pure water by high performance liquid chromatography (HPLC).
The method according to claim 1, wherein the mass ratio of the graphene oxide and the buffer solution is 1: 8-10.
The method according to claim 1, wherein the buffer solution is 50 mM Tris-HCl, pH 7.4-7.5.
The method according to claim 1, wherein the mass ratio of the organic contaminants and the stock solution in step (2) is 1: 4x 10 5 -7 x 1 0 5.
The method according to claim 1, wherein the reductant in step (4) is any one of sodium sulfide (Na 2 S), 1,4-dithiothreitol (DTT), and L-cysteine (Cysteine).
The method according to claim 1, wherein the oxide to which the organic contaminants adsorbed
The method according to claim 1, wherein the organic contaminants adsorbed and the pure water
The method according to claim 1, wherein the in step (4) is subject to filter and concentration for small molecular size.
The method according to claim 1, wherein the chlorophenol, 4-ch l oroaniline and chlorobenzene. mass ratio of the reductant and the graphene in step (4) is 1: 20-40. mass ratio of the graphene oxide to which the in step (4) is 1 20-80. pure water containing the organic contaminants selective recovery of organic contaminants of organic contaminant is any one of 4 -
Embodiments described in the patent, grouped by the materials and process steps they use.
6 materials1 process step
Sewage containing 4-chlorophenol treated with graphene oxide prepared by Hummer method. GO dispersed and mixed with 50 mM Tris-HCl pH 7.5 at mass ratio 1:9. 4-chlorophenol added to tap water at mass ratio 1:4.3×10⁵ to give 18.4 µmol/L sewage. Stock solution added under stirring for 24 h adsorption equilibrium at 25°C. After solid-liquid separation, solid phase mixed with pure water at mass ratio 1:45; N₂ introduced at 30 mL/min for 30 min to remove dissolved oxygen. Reductant (Na₂S, DTT, or Cysteine) then added to initiate reduction and release of 4-chlorophenol into pure water.
Materials described outside the worked examples.
organic contaminants
4-chloroaniline
Related documents with shared materials, methods, properties, or citations.
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