Well-exposed gold nanoclusters on Indonesia natural zeolite: a highly active and reusable catalyst for the reduction of p-nitrophenol

Yulizar, Yoki; Kadja, Grandprix T.M.; Safa’at, Mohamad Faizal

doi:10.1007/s11144-015-0916-2

Cited by 26 publications

(8 citation statements)

References 48 publications

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“…Because of their unique channel structure, good thermal stability, and high acidity and selectivity properties, natural and synthetic zeolites with conventional structures have been widely used both in the laboratory and industrial scales, as molecular sieves, adsorbent, cation exchanger, and heterogeneous catalyst (Jeong et al 2017;Yulizar et al 2016;Makertihartha et al 2020;Kadja and Ilmi 2019;Puspitasari et al 2019). Several examples of zeolite applications as molecular sieves are as follows.…”

Section: Applications Of Zeolitesmentioning

confidence: 99%

Advanced Ordered Nanoporous Materials

Kadja

Nurdini

Krisnandi

et al. 2021

Advanced Functional Porous Materials

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Ordered nanoporous materials have attracted much attention due to their unique pore architecture, tunable physicochemical properties, which find applications in a broad spectrum of catalysis, separation, adsorption, drug delivery, energy storage, and sensing. In the past decades, the amount of research on ordered nanoporous materials has grown incrementally, resulting in diverse types of these materials with unprecedented structures. Herein, this chapter presents the recent advances of ordered nanoporous materials, including zeolites, ordered mesoporous materials (OMMs), metal-organic frameworks (MOFs), and covalent organic frameworks (COFs). Several vital aspects, i.e., structural and physicochemical properties,

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Section: Applications Of Zeolitesmentioning

confidence: 99%

Advanced Ordered Nanoporous Materials

Kadja

Nurdini

Krisnandi

et al. 2021

Advanced Functional Porous Materials

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“…AuNP formation was characterized by the appearance of λmax spectral peaks in the range 500-530 nm [23][24][25][26] from the peak of HAuCl4 solution spectrum at 200 nm [27]. The graph of NaBH4 concentration variation in Figure 1 shows that NaBH4 3.46 × 10 -3 M has the smallest λmaks, 509 nm.…”

Section: Synthesis Of Aunp With Various Concentration Of Nabh4mentioning

confidence: 99%

2, 4, 6-Trithiol-1, 3, 5-Triazine-Modified Gold Nanoparticles and Its Potential as Formalin Detector

Yulizar

Ariyanta

Rakhmania

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Stabilized gold nanoparticles (AuNP) have been successfully prepared by a modification of ligand 2, 4, 6-trithiol-1, 3, 5-triazine (TT). TT has three thiol groups and nitrogen atoms on the aromatic ring that can interact and stabilize AuNP. TT modified AuNP (AuNP/TT) was characterized using UV-Vis spectrophotometer, particle size analyzer (PSA) and transmission electron microscopy (TEM). The characterization showed that AuNP/TT stable at a maximum wavelength (λmaks) of 537 nm with the particle diameter of 9.41 nm. The increased acidity (pH) causes the protonated thiol groups of TT marked with a visual change of colloidal AuNP/TT from purple to blue, causing AuNP and TT bonds weakened. In this study, the AuNP/TT was reacted with formalin. This interaction shows that AuNP/TT has a potential as an efficient detector of formalin, marked by changes in the diameter of the particle, colloidal color, and maximum wavelength shift.

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“…To confirm AuNPs formation and its crystal phase, the Miller indices are adjusted with data join committee on powder diffraction standards of Au (JCPDS number 04-0748) by SAED analysis as shown in Figure 8. The Miller indices were (111), (200), (220), (311), and (222), indicating that the synthesized AuNPs have a phase crystal of face centered cubic [26,30,31].…”

Section: Tem-saed Analysis Tem-saed Characterization Wasmentioning

confidence: 99%

Green Method for Synthesis of Gold Nanoparticles Using Polyscias scutellaria Leaf Extract under UV Light and Their Catalytic Activity to Reduce Methylene Blue

Yulizar

Utari

Ariyanta

et al. 2017

Journal of Nanomaterials

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The aqueous fraction of Polyscias scutellaria leaf extract (PSE) has been used as a reducing agent and stabilizer in the green synthesis of gold nanoparticles (AuNPs). UV-Vis spectrophotometry, particle size analyzer (PSA), Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy-selected area electron diffraction (TEM-SAED), and X-ray diffraction (XRD) were used to characterize AuNPs. The AuNPs have a size of 5-20 nm and have a face centered cubic (fcc) crystal structure and are stable for 21 days. Phenolic compounds, which are secondary metabolites of PSE, act as an active compound to reduce Au 3+ion to Au 0 , as well as stabilize the AuNPs through their surface interaction with carbonyl and hydroxyl groups of phenols. AuNPs exhibit excellent catalytic activity for the reduction of methylene blue with NaBH 4 . The reduction of methylene blue using AuNPs catalysts is a pseudo-first-order reaction with a reduction rate constant ( obs ) of 0.0223 min −1 .

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Well-exposed gold nanoclusters on Indonesia natural zeolite: a highly active and reusable catalyst for the reduction of p-nitrophenol

Cited by 26 publications

References 48 publications

Advanced Ordered Nanoporous Materials

Advanced Ordered Nanoporous Materials

2, 4, 6-Trithiol-1, 3, 5-Triazine-Modified Gold Nanoparticles and Its Potential as Formalin Detector

Green Method for Synthesis of Gold Nanoparticles Using Polyscias scutellaria Leaf Extract under UV Light and Their Catalytic Activity to Reduce Methylene Blue

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