Facile Synthesis of Visible Light-Induced g-C3N4/Rectorite Composite for Efficient Photodegradation of Ciprofloxacin

Sun, Zhiming; Zhang, Xiangwei; Zhu, Rui; Dong, Xiongbo; Wang, Bin

doi:10.3390/ma11122452

Cited by 18 publications

(5 citation statements)

References 41 publications

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“…In contrast, the samples deposed on conductive substrates such as Ti_FTO (Figure 7) and Ti_Al (Figure 8) presented a similar kinetic mechanism during the entire photocatalytic period. This result confirmed that the production of the oxidative species during the photocatalytic process was significantly influenced by the substrate nature [37]. The kinetic data model for these two-interval reaction are included in Table 3 for the Apd pollutant and Table 4 for the Tr pollutant.…”

Section: Photocatalytic Propertiessupporting

confidence: 65%

The Influence of Light Irradiation on the Photocatalytic Degradation of Organic Pollutants

Eneşca

Isac

2020

Materials

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The design of a photocatalytic process must consider intrinsic and extrinsic parameters affecting its overall efficiency. This study aims to outline the importance of balancing several factors, such as radiation source, total irradiance, photon flux, catalyst substrate, and pollutant type in order to optimize the photocatalytic efficiency. Titanium oxide was deposed by the doctor blade technique on three substrates (microscopic glass (G), flour-doped tin oxide (FTO), and aluminum (Al)), and the photocatalytic properties of the samples were tested on two pollutants (tartrazine (Tr) and acetamiprid (Apd)). Seven irradiation scenarios were tested using different ratios of UV-A, UV-B + C, and Vis radiations. The results indicated that the presence of a conductive substrate and a suitable ratio of UV-A and Vis radiations could increase the photocatalytic efficiency of the samples. Higher efficiencies were obtained for the sample Ti_FTO (58.3% for Tr and 70.8% for Apd) and the sample Ti_Al (63.8% for Tr and 82.3% for Apd) using a mixture of three UV-A and one Vis sources (13.5 W/m2 and 41.85 μmol/(m2·s)). A kinetic evaluation revealed two different mechanisms of reaction: (a) a one-interval mechanism related to Apd removal by Ti_FTO, Ti_Al (scenarios 1, 4, 5, and 7), and Ti_G samples (scenario 7) and (b) a two-interval mechanism in all other cases.

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Section: Photocatalytic Propertiessupporting

confidence: 65%

The Influence of Light Irradiation on the Photocatalytic Degradation of Organic Pollutants

Eneşca

Isac

2020

Materials

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“…The main aim of this work is to predict maximum achievable [N] network in amorphous Si-B-C-N materials in a wide range of [Si]/[B]/[C] ratios. The background hypothesis, supported by the author’s previous works [ 30 , 41 ] on simpler nitrides and the discussion therein, is that maximum [N] network in those materials which are not affected by the composition and structure of their precursors is largely given by the formation of N 2 molecules during the atom-by-atom growth (not to be confused with polymerization of N-rich precursors such as melamine or dicyandiamide [ 42 ], which is beyond the present scope). Maximum [N] network calculated at numerous [Si]/[B]/[C] ratios is compared with experimental [N] total values obtained in our laboratory by reactive magnetron sputtering using equally numerous sputter target compositions.…”

Section: Introductionmentioning

confidence: 87%

Maximum Achievable N Content in Atom-by-Atom Growth of Amorphous Si-B-C-N Materials

Houška

2021

Materials

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Amorphous Si-B-C-N alloys can combine exceptional oxidation resistance up to 1500 °C with high-temperature stability of superior functional properties. Because some of these characteristics require as high N content as possible, the maximum achievable N content in amorphous Si-B-C-N is examined by combining extensive ab initio molecular dynamics simulations with experimental data. The N content is limited by the formation of unbonded N2 molecules, which depends on the composition (most intensive in C rich materials, medium in B rich materials, least intensive in Si-rich materials) and on the density (increasing N2 formation with decreasing packing factor when the latter is below 0.28, at a higher slope of this increase at lower B content). The maximum content of N bonded in amorphous Si-B-C-N networks of lowest-energy densities is in the range from 34% to 57% (materials which can be grown without unbonded N2) or at most from 42% to 57% (at a cost of affecting materials characteristics by unbonded N2). The results are important for understanding the experimentally reported nitrogen contents, design of stable amorphous nitrides with optimized properties and pathways for their preparation, and identification of what is or is not possible to achieve in this field.

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“…A novel g-C 3 N 4 /rectorite composite was synthesized by Sun et al using a simple and low-cost method. They found that including rectorite reduced g-C 3 N 4 agglomeration, raised the surface area, and greatly enhanced the photocatalytic performance of the composite toward CIP degradation [80].…”

Section: G-c 3 N 4 /Rectoritementioning

confidence: 99%

Recent Clay-Based Photocatalysts for Wastewater Treatment

et al. 2023

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Photocatalysis is a remarkable methodology that is popular and applied in different interdisciplinary research areas such as the degradation of hazardous organic contaminants in wastewater. In recent years, clay-based photocatalyst composites have attracted significant attention in the field of photocatalysis owing to their abundance, excellent light response ability, and stability. This review describes the combination of clay with focusing photocatalysts such as TiO2, g-C3N4, and Bi-based compounds for degrading organic pollutants in wastewater. Clay-based composites have more active surface sites, resulting in inhibited photocatalyst particle agglomeration. Moreover, clay enhances the creation of active radicals for organic pollutant degradation by separating photogenerated electrons and holes. Thus, the functions of clay in clay-based photocatalysts are not only to act as a template to inhibit the agglomeration of the main photocatalysts but also to suppress charge recombination, which may lengthen the electron–hole pair’s lifespan and boost degrading activity. Moreover, several types of clay-based photocatalysts, such as the clay type and main photocatalyst, were compared to understand the function of clay and the interaction of clay with the main photocatalyst. Thus, this study summarizes the recent clay-based photocatalysts for wastewater remediation and concludes that clay-based photocatalysts have considerable potential for low-cost, solar-powered environmental treatment.

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Facile Synthesis of Visible Light-Induced g-C3N4/Rectorite Composite for Efficient Photodegradation of Ciprofloxacin

Cited by 18 publications

References 41 publications

The Influence of Light Irradiation on the Photocatalytic Degradation of Organic Pollutants

The Influence of Light Irradiation on the Photocatalytic Degradation of Organic Pollutants

Maximum Achievable N Content in Atom-by-Atom Growth of Amorphous Si-B-C-N Materials

Recent Clay-Based Photocatalysts for Wastewater Treatment

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