Fullerene stabilized gold nanoparticles supported on titanium dioxide for enhanced photocatalytic degradation of methyl orange and catalytic reduction of 4-nitrophenol

Islam, Md. Tariqul; Jing, Hangkun; Yang, Ting; Zubia, Emmanuel; Goos, Alan G.; Bernal, Ricardo A.; Botez, Cristian E.; Narayan, Mahesh; Chan, Candace K.; Noveron, Juan C.

doi:10.1016/j.jece.2018.05.032

Cited by 91 publications

(35 citation statements)

References 55 publications

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“…To the bset of our knowledge, few articles have yet been available utilizing lignin as carbon source and g-C 3 N 4 as both template and nitrogen source to fabricate NC catalyst. To our delight, the as-synthesized NC showed high catalytic activity for 4-NP reduction and outperformed most of the previously reported catalysts in the literature [19][20][21][22][23][24][25][26][27] . Using N 14 C-1373 as an example, the morphology of the resultant NC was characterized by TEM.…”

Section: Resultssupporting

confidence: 52%

Synthesis of lignin-derived nitrogen-doped carbon as a novel catalyst for 4-NP reduction evaluation

Liu

et al. 2020

Sci Rep

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In this study, nitrogen-doped carbon (NC) was fabricated using lignin as carbon source and g-C3N4 as sacrificial template and nitrogen source. The structural properties of as-prepared NC were characterized by TEM, XRD, FT-IR, Raman, XPS and BET techniques. Attractively, NC has proved efficient for reducing 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) using NaBH4 as hydrogen donor with high apparent rate constant (kapp = 4.77 min−1) and specific mass activity (s = 361 mol kgcat−1 h−1), which values are superior to the previously reported catalysts in the literature. Density functional theory (DFT) calculations demonstrate that four kinds of N dopants can change the electronic structure of the adjacent carbon atoms and contribute to their catalytic properties dependant on N species, however, graphitic N species has much greater contribution to 4-NP adsorption and catalytic reduction. Furthermore, The preliminary mechanism of this transfer hydrogenation reaction over as-prepared NC is proposed on the basis of XPS and DFT data. Astoundingly, NC has excellent stability and reusability of six consecutive runs without loss of catalytic activity. These findings open up a vista to engineer lignin-derived NC as metal-free catalyst for hydrogenation reaction.

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Section: Resultssupporting

confidence: 52%

Synthesis of lignin-derived nitrogen-doped carbon as a novel catalyst for 4-NP reduction evaluation

Liu

et al. 2020

Sci Rep

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“…The catalytic activity of Au nanocrystals is higher than that of Au@Cu 2 O NCs. Unfortunately, Au nanocrystals often tend to agglomerate in order to minimize their surface energy, which restricts their real application [25]. The subtle difference in reduction rate of MO by Au@Cu 2 O NCs depends upon the differences of thickness of Cu 2 O shells and size of catalysts due to the size effect [53].…”

Section: Resultsmentioning

confidence: 99%

“…Among these noble metal nanomaterials, Au nanocrystals have been proven to be the optimal catalysts due to the excellent chemical and physical stability, tunable optical properties, high catalytic performances, and the surface plasmon resonance (SPR) properties [21][22][23][24]. However, to decrease surface energy, unmodified Au nanocrystals are prone to agglomerate, which impedes the catalytic active sites and leads to reduction of catalytic capacity [25]. In order to address this problem, it has been proposed to embed Au nanocrystals into specific shell matrices to form core-shell nanostructures.…”

Section: Introductionmentioning

confidence: 99%

A Novel Au@Cu2O-Ag Ternary Nanocomposite with Highly Efficient Catalytic Performance: Towards Rapid Reduction of Methyl Orange Under Dark Condition

Kou

Zheng

et al. 2019

Nanomaterials

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Au@Cu2O core-shell nanocomposites (NCs) were synthesized by reducing copper nitrate on Au colloids with hydrazine. The thickness of the Cu2O shells could be varied by adjusting the molar ratios of Au: Cu. The results showed that the thickness of Cu2O shells played a crucial role in the catalytic activity of Au@Cu2O NCs under dark condition. The Au@Cu2O-Ag ternary NCs were further prepared by a simple galvanic replacement reaction method. Moreover, the surface features were revealed by TEM, XRD, XPS, and UV–Vis techniques. Compared with Au@Cu2O NCs, the ternary Au@Cu2O-Ag NCs had an excellent catalytic performance. The degradation of methyl orange (MO) catalyzed by Au@Cu2O-Ag NCs was achieved within 4 min. The mechanism study proved that the synergistic effects of Au@Cu2O-Ag NCs and sodium borohydride facilitated the degradation of MO. Hence, the designed Au@Cu2O-Ag NCs with high catalytic efficiency and good stability are expected to be the ideal environmental nanocatalysts for the degradation of dye pollutants in wastewater.

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“…10 Recently, noble metal NP-based catalytic processes have become intriguing and effective methods for water or wastewater treatment technologies. [11][12][13] Catalytic processes have advantages over other methods. For instance, catalytic processes are fast and can essentially transform or degrade hazardous pollutants into non-or less-hazardous species, while other methods may transfer the pollutants from one phase to another.…”

Section: Introductionmentioning

confidence: 99%

Rapid synthesis of ultrasmall platinum nanoparticles supported on macroporous cellulose fibers for catalysis

et al. 2019

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Fullerene stabilized gold nanoparticles supported on titanium dioxide for enhanced photocatalytic degradation of methyl orange and catalytic reduction of 4-nitrophenol

Cited by 91 publications

References 55 publications

Synthesis of lignin-derived nitrogen-doped carbon as a novel catalyst for 4-NP reduction evaluation

Synthesis of lignin-derived nitrogen-doped carbon as a novel catalyst for 4-NP reduction evaluation

A Novel Au@Cu2O-Ag Ternary Nanocomposite with Highly Efficient Catalytic Performance: Towards Rapid Reduction of Methyl Orange Under Dark Condition

Rapid synthesis of ultrasmall platinum nanoparticles supported on macroporous cellulose fibers for catalysis

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