Luận văn thạc sĩ Kỹ thuật hóa học: Nghiên cứu tổng hợp vật liệu 3D-Graphene oxit aerogel để hấp phụ phenol, bisphenol A

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Graphite, graphene oxit, graphene oxit aerogel (GOA), phenol, bisphenol A, quá WUuQKKҩSSKөWuQKKuQKQJKLrQFӭX

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- Khҧo sát các ÿLӅu kiӋn tәng hӧp GOA

- Khҧo sát cҩu trúc ± hình thái ± ÿһc tính cӫa GOA phù hӧp

- Khҧo sát khҧ QăQJKҩp phө cӫD*2$ÿӕi vӟi phenol, bisphenol A

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6ҧQSKҭP GOA WәQJKӧSÿѭӧFӭQJGөQJOjPYұWOLӋX KҩSSKөphenol, bisphenol A ҦQKKѭӣQJFӫDWKӡLgian, pHYjQӗQJÿӝEDQÿҫXÿӃQGXQJOѭӧQJKҩSSKөFӫD GOA ÿmÿѭӧFQJKLrQFӭXWK{QJTXDNKҧRViWÿѫQ\ӃXWӕ ĈӝQJKӑFTXiWUuQK KҩSSKөÿѭӧFNKҧRsát YӟLP{ KuQKNKXӃFKWiQEӅPһWYjPDRTXҧQ; ÿӝQJKӑFELӇXNLӃQEұF PӝW và EұFKDL 4Xi WUuQK KҩS SKө ÿѭӧF ÿiQK JLi YӟL P{ KuQK ÿҷQJ QKLӋW /DQJPXLU, Freundlich, và Temkin %rQFҥQKÿySKѭѫQJSKiSEӅPһWÿiSӭQJYӟLP{KuQKWKLӃWNӃWUӵFJLDRWkP[RD\ÿѭӧFVӱGөQJ ÿӇÿiQKJLiҧQKKѭӣQJÿӗQJWKӡLFӫDFiF \ӃXWӕ WKӡLgian, pHYjQӗQJÿӝEDQÿҫX ÿӃQKLӋXVXҩWKҩSSKөFӫD*2$ ÿӕLYӟLSKHQRObisphenol A

In this study, graphene oxide (GO) was syntheiszed from graphite by improved Hummers¶ method Graphene oxide aerogel (GOA) samples were syntheisze from GO by ice segregation induced selfassembly method Effect of conditions on GOA synthesis including GO concentration, ultrasound time, and pH were investigated The structure - morphology - characterization of GOA samples were studied by density, Raman spectroscopy, scanning electron microscope, Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy,

energy dispersive X-ray spectroscopy, and Brunauer - Emmett - Teller surface area

The synthesized GOA was applied as adsorbent for removal of phenol, bisphenol A from water The effect factors including contact time, pH, and initial concentration on the adsorption ablity of GOA were studied The adsorption kinetics was examined

through liquid film and intraparticle diffusion, pseudo-first-order and order kinetic models The experimental data was studied by using Langmuir, Freundlich,

pseudo-second-and Temkin isotherm models Additionally, response surface methodology involving rotate central composite design was applied to investigate simultaneously the effects of adsorption variables including contact time, pH, and initial concentration on the removal efficiency of GOA for phenol, bisphenol A.

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1.7.2 Mͭc tiêu nghiên cͱu 28

1.7.3 N͡i dung nghiên cͱu 28

2.3 Khҧo sát cҩu trúc ± hình thái ± ÿһc tính cӫa vұt liӋu GOA 48

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Ĉ͙i vͣi phenol 50

Ĉ͙i vͣi BPA 54

&+ѬѪ1G 3: KӂT QUҦ VÀ BÀN LUҰN 56

3.1 ĈiӅu kiӋn tәng hӧp GOA 56

3.1.1 N͛QJÿ͡ GO 56

3.1.2 Thͥi gian siêu âm 58

3.1.3 pH 62

3.2 Cҩu trúc ± hình thái ± ÿһc tính cӫa GOA15 67

3.3 ҦQKKѭӣng cӫa các yӃu tӕ ÿӃn khҧ QăQJKҩp phө cӫa GOA15 75

Ĉ͙i vͣi phenol 75

Ĉ͙i vͣi BPA 88

&˯FK͇ h̭p phͭ phenolic 102

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