Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal Ions

Anas, Nur Ain Asyiqin; Fen, Yap Wing; Yusof, Nor Azah; Omar, Nur Alia Sheh; Ramdzan, Nur Syahira Md; Daniyal, ‬Wan Mohd Ebtisyam Mustaqim Mohd

doi:10.3390/ma13112591

Cited by 30 publications

(15 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peak at 1625.1 cm −1 and 1446.2 cm −1 corresponded to asymmetric and symmetric N + -NH 3 groups, respectively (Darmansyah et al, 2021). The FTIR bands of modi ed zeolite with CTAB are similar to the previous studies (Anas et al, 2020;Taffarel and Rubio, 2010). SEM analysis also indicated that CTAB could attach to the surface of the zeolite.…”

Section: Characterization Of Modi Ed Zeolitesupporting

confidence: 87%

Application of Non-Linear Kinetic and Isotherm Model for Investigation of Cod Removal from Tapioca Liquid Waste Onto Modified Lampung Natural Zeolite

Supriyadi

Darmansyah

Sari

et al. 2021

Sci. Technol. Indones

View full text Add to dashboard Cite

The experimental data analysis of tapioca liquid waste onto modified Lampung natural zeolite using non-linear regression models is limited. The adsorption data were analyzed with nine kinetic models (the pseudo-first-order, the pseudo-second-order, the intraparticle diusion, fractional power, Bangham, Elovich, mixed-1.2-order, modification of pseudo-second-order, and Avrami) and eight isotherm models (Langmuir, Freundlich, Dubinin-Radushkevich, Sips, Redlich-Peterson, Toth, Liu, and Khan). The percentage of adsorption was decreased from 61.29% to 13.66% with increasing Chemical Oxygen Demand (COD) concentration 310 mg/L to 9450 mg/L. The result showed that the power model (R2 : 0.98, X2 : 0.137), Avrami (R2 : 0.98, X2 : 0.141), Bangham (R2 : 0.98, X2 : 0.145) and modified pseudo-second-order (R2 : 0.98, X2 : 0.147) can be recommended as the best fied to experimental kinetic data. The Khan model (R2 : 0.99961, X2 : 0.03729) and Langmuir (R2 : 0.99478, X2 : 0.24902) was the most reliable for describing the isotherm model. Thus, the analysis of experimental adsorption data using a non-linear regression model is highly recommended.

show abstract

Section: Characterization Of Modi Ed Zeolitesupporting

confidence: 87%

Application of Non-Linear Kinetic and Isotherm Model for Investigation of Cod Removal from Tapioca Liquid Waste Onto Modified Lampung Natural Zeolite

Supriyadi

Darmansyah

Sari

et al. 2021

Sci. Technol. Indones

View full text Add to dashboard Cite

show abstract

“…In addition, the C-O stretching vibration of the carboxylic acid and alcohol groups was indicated by the presence of an absorption band in the wavenumber range of 1300-1000 cm -1 [14], [15]. The presence of ZnO in the ZnO/OP composite was indicated by the absorption at wavenumber 400-500 cm -1 as the ZnO strain area [2], [3], [13].…”

Section: Materials Characterization Of Zno and Zno/op Using Ir Spectr...mentioning

confidence: 99%

The effect of orange peel waste addition on ZnO characteristics and its ability to degrade methyl orange

Rosanti

HİDAYAT

Kusumawati

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

The development of the textile industry in Indonesia is rapid. It cause serious environmental problems because the dyes used in the textile industry are synthetic that is azo dyes. Azo dyes are non-biodegradable substances that pollute the environment if not processed. One of the azo dyes that is often used in the textile industry is Methyl Orange. Photodegradation is an inexpensive and environmentally friendly method of removing synthetic dyes. This study will discuss the effect of adding orange peel on the characterization of ZnO and the ability to degrade Methyl Orange. The results of the FTIR spectra showed an absorption in the area of 1430-1455 cm-1 that means the orange peel had been impregnated into ZnO and the more ZnO as added on orange peel, it may reduce the number of -OH and CH groups of the ZnO/OP composite. Based on the results of characterization using XRD, it is known that the addition of orange peel into ZnO did not damage the crystal structure and crystal form. The crystal structure of ZnO/OP formed was wurtzite with a hexagonal shape. The results of the characterization using DR-UV showed that the band gap energy of ZnO/OP was smaller than ZnO and the more ZnO was added, the wider the band gap of energy. ZnO/OP with a variation of 1:25 can degrade Methyl Orange more than ZnO that was 73% in 60 minutes.

show abstract

“…At two dielectric media interfaces, any metal holding a large number of free electrons such as gold, silver, copper and aluminum is positioned [ 56 , 57 , 58 ]. However, gold is the most stable and sensitive metal compared to others, so it is very suitable to be used as a metal film [ 59 , 60 , 61 , 62 , 63 , 64 , 65 ]. SPR will occur under complete conditions of internal reflection when plane-polarized light hits the gold-coated film prism [ 66 , 67 , 68 ].…”

Section: Optical Sensorsmentioning

confidence: 99%

Recent Advances on Detection of Insecticides Using Optical Sensors

Fauzi

Fen

Omar

et al. 2021

Sensors

Self Cite

View full text Add to dashboard Cite

Insecticides are enormously important to industry requirements and market demands in agriculture. Despite their usefulness, these insecticides can pose a dangerous risk to the safety of food, environment and all living things through various mechanisms of action. Concern about the environmental impact of repeated use of insecticides has prompted many researchers to develop rapid, economical, uncomplicated and user-friendly analytical method for the detection of insecticides. In this regards, optical sensors are considered as favorable methods for insecticides analysis because of their special features including rapid detection time, low cost, easy to use and high selectivity and sensitivity. In this review, current progresses of incorporation between recognition elements and optical sensors for insecticide detection are discussed and evaluated well, by categorizing it based on insecticide chemical classes, including the range of detection and limit of detection. Additionally, this review aims to provide powerful insights to researchers for the future development of optical sensors in the detection of insecticides.

show abstract

Investigating the Properties of Cetyltrimethylammonium Bromide/Hydroxylated Graphene Quantum Dots Thin Film for Potential Optical Detection of Heavy Metal Ions

Cited by 30 publications

References 77 publications

Application of Non-Linear Kinetic and Isotherm Model for Investigation of Cod Removal from Tapioca Liquid Waste Onto Modified Lampung Natural Zeolite

Application of Non-Linear Kinetic and Isotherm Model for Investigation of Cod Removal from Tapioca Liquid Waste Onto Modified Lampung Natural Zeolite

The effect of orange peel waste addition on ZnO characteristics and its ability to degrade methyl orange

Recent Advances on Detection of Insecticides Using Optical Sensors

Contact Info

Product

Resources

About