Facile and green synthesis of copper nanoparticles loaded on the amorphous carbon nitride for the oxidation of cyclohexane

Shahzeydi, Alireza; Ghiaci, Mehran; Farrokhpour, Hossein; Shahvar, Ali; Sun, Mingxuan; Saraji, Mohammad

doi:10.1016/j.cej.2019.03.227

Cited by 86 publications

(30 citation statements)

References 55 publications

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“…3d), both exhibiting a dominating major peak at 27.8 degrees, which can be attributed to the (002) reflection of the graphite phase of g-C 3 N 4 . 32 The g-C 3 N 4 prepared by microwave heating is similar to that prepared from urea in a tube furnace (Fig. S3, ESI †).…”

Section: Resultsmentioning

confidence: 99%

“…Green-emissive CDs were synthesized using a microwave-assisted method, from citric acid as the carbon source and urea as the nitrogen source according to our previous work. 32 6 g urea, 3 g citric acid and 20 ml of deionized water were mixed in a 100 ml beaker to form a colorless transparent solution. The beaker was transferred to a domestic 750 W microwave oven, and heated for 3-4 min.…”

Section: Synthesis Of Cdsmentioning

confidence: 99%

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Microwave-assisted in situ large scale synthesis of a carbon dots@g-C₃N₄ composite phosphor for white light-emitting devices

Ushakova

Zhou

et al. 2020

Mater. Chem. Front.

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Section: Resultsmentioning

confidence: 99%

Section: Synthesis Of Cdsmentioning

confidence: 99%

Microwave-assisted in situ large scale synthesis of a carbon dots@g-C₃N₄ composite phosphor for white light-emitting devices

Ushakova

Zhou

et al. 2020

Mater. Chem. Front.

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“…The other important strategy is using single-atom alloys (SAA) and single-atom catalysts (SAC), immobilized on solid supports such as ZnO [32], berglass [33], graphene [34], Al 2 O 3 [35], and graphitic carbon nitride (g-C 3 N 4 ) [6][7] which has shown interesting results in acetylene hydrogenation. Among the solid supports, g-C 3 N 4 is always considered a suitable candidate for the deposition of Pd active sites [36][37][38]. It has some outstanding features such as low-cost fabrication, short time and easy synthesis, adjustable surface area, good dispersion potential for active sites, and high coordination ability for metal clusters and nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic insight into the hydrogenation of acetylene on the Pd2/g-C3N4 catalyst: effect of Pd clustering on the barrier energy and selectivity

2021

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In this work, the hydrogenation of acetylene on the Pd 2 /g-C 3 N 4 catalyst is investigated by the Density Functional Theory (DFT) and Quantum Theory of Atoms in Molecules (QTAIM) calculations. The Prereactant (R), transition states (TSs), and the intermediates (IMs), involved in the hydrogenation process, are characterized from the point of view of energy and structure. The calculated energy barrier for the hydrogen transfer to the acetylene and ethylene are 6.77 and 12.28 kcal/mol, respectively which shows that the Pd 2 /g-C 3 N 4 catalyst has good selectivity for the conversion of acetylene to ethylene rather than ethane. Comparing the values of these energy barriers with those of the hydrogenation of acetylene on the Pd/g-C 3 N 4 catalyst (21.53 and 38.88 kcal/mol, respectively) shows that the increase in the number of the Pd atoms decreases the energy barriers of the hydrogenation reaction and increases the selectivity of the catalyst for the ethylene production.

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“…As a growing trend, nanotechnology has attracted huge interest among scientists in various scientific fields such as catalysis [1][2][3], energy conversion and storage [4], sample preparation [5][6][7][8], and adsorption [9][10][11][12][13][14][15]. The great interest in the field of nanotechnology arises from the extraordinary physical, chemical, thermal, and mechanical characteristics of nanomaterials in comparison with large-size particles.…”

Section: Introductionmentioning

confidence: 99%

Itaconic acid-modified layered double hydroxide as a ‎novel adsorbent for effective removal of Congo red from aqueous solutions

Dinari¹,

Shabani²

2021

Preprint

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Herein, we report the synthesis of Cu-Ca-Al/NO3-based layered double hydroxide through co-precipitation methodology. The prepared layered double hydroxide was then modified with itaconic acid. The physicochemical properties of the prepared materials were studied using Fourier transform-infrared spectroscopy, scanning electron microscopy, X-ray diffraction analysis, thermogravimetric analysis, and nitrogen adsorption/desorption technique. The prepared materials were then applied as novel adsorbents for the removal of Congo red as a model of an anionic dye from aqueous media. To reach maximum adsorption, the effect of parameters including sample solution pH, adsorbent amount, contact time, and initial concentration of Congo red on the adsorption process was investigated. Kinetic studies were also conducted to study the mechanism of adsorption. In this regard, the kinetic models of pseudo-first-order, pseudo-second-order, Elovich, and intra-particle diffusion were studied. The results showed that the adsorption of Congo red onto Cu-Ca-Al-LDH and LDH-ITA adsorbents followed the pseudo-second-order kinetic model. To evaluate the equilibrium adsorption data, different isotherms including Langmuir, Freundlich, and Dubinin-Radushkevich were also applied. The data revealed that the Freundlich isotherm provided the best fit with the equilibrium data of both adsorbents. Maximum adsorption capacities of 81 and 84 mg g− 1 were obtained using Cu-Ca-Al-LDH and LDH-ITA adsorbents, respectively.

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Facile and green synthesis of copper nanoparticles loaded on the amorphous carbon nitride for the oxidation of cyclohexane

Cited by 86 publications

References 55 publications

Microwave-assisted in situ large scale synthesis of a carbon dots@g-C₃N₄ composite phosphor for white light-emitting devices

Microwave-assisted in situ large scale synthesis of a carbon dots@g-C₃N₄ composite phosphor for white light-emitting devices

Mechanistic insight into the hydrogenation of acetylene on the Pd2/g-C3N4 catalyst: effect of Pd clustering on the barrier energy and selectivity

Itaconic acid-modified layered double hydroxide as a ‎novel adsorbent for effective removal of Congo red from aqueous solutions

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Facile and green synthesis of copper nanoparticles loaded on the amorphous carbon nitride for the oxidation of cyclohexane

Cited by 86 publications

References 55 publications

Microwave-assisted in situ large scale synthesis of a carbon dots@g-C3N4 composite phosphor for white light-emitting devices

Microwave-assisted in situ large scale synthesis of a carbon dots@g-C3N4 composite phosphor for white light-emitting devices

Mechanistic insight into the hydrogenation of acetylene on the Pd2/g-C3N4 catalyst: effect of Pd clustering on the barrier energy and selectivity

Itaconic acid-modified layered double hydroxide as a ‎novel adsorbent for effective removal of Congo red from aqueous solutions

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Product

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Microwave-assisted in situ large scale synthesis of a carbon dots@g-C₃N₄ composite phosphor for white light-emitting devices

Microwave-assisted in situ large scale synthesis of a carbon dots@g-C₃N₄ composite phosphor for white light-emitting devices