Influence of hydrogen peroxide in enhancing photocatalytic activity of carbon nitride under visible light: An insight into reaction intermediates

Saha, Dipendu; Desipio, Mathew M.; Hoinkis, Tyler J.; Smeltz, Erik J.; Thorpe, Ryan; Hensley, Dale K.; Fischer-Drowos, Shirley G.; Chen, Jihua

doi:10.1016/j.jece.2018.07.030

Cited by 74 publications

(17 citation statements)

References 41 publications

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“…The diffraction Fe 3 O 4 sample showed sharp peaks at an angle of 30.52°, 35.86°, 43.44°, 53.72°, 57.2° and 62.76°. This finding was consistent with previous reports [ 17 ].…”

Section: Resultssupporting

confidence: 94%

“…The optimum condition for the addition of H 2 O 2 was 0.5 mL. According to Saha et al [ 17 ], the effectiveness of the photodegradation decreased with the addition of an excess volume of H 2 O 2 due to the formation of less reactive HO 2 • which reacted with OH • , causing it to decrease. Based on the results obtained, it was observed that adding H 2 O 2 to the photodegradation process while using SnO 2 –Fe 3 O 4 nanocomposite had no effect.…”

Section: Resultsmentioning

confidence: 99%

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SnO2–Fe3O4 nanocomposites for the photodegradation of the Congo red dye

Said

Rizki

Asri

et al. 2022

Heliyon

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“…The diffraction Fe 3 O 4 sample showed sharp peaks at an angle of 30.52°, 35.86°, 43.44°, 53.72°, 57.2° and 62.76°. This finding was consistent with previous reports [ 17 ].…”

Section: Resultssupporting

confidence: 94%

Section: Resultsmentioning

confidence: 99%

SnO2–Fe3O4 nanocomposites for the photodegradation of the Congo red dye

Said

Rizki

Asri

et al. 2022

Heliyon

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“…Moreover, because PEG is crucial for the observed catalytic effect, and PEG is capping the Taking into consideration that the decomposition of the dyes occurs due to the reaction with the hydroxyl (mainly Equations ( 4), ( 6), (11), and ( 18)) and sulfate (Equation ( 10)) radicals, the presence of TiP-CD will somehow promote the formation of these highly oxidant species. The enhancement of photodegradation of RBB-R in the presence of TiP-CD and H 2 O 2 or S 2 O 8 2− may be attributed to the combined effects of photodissociation of the oxidant species in the presence of UV light and TiP-CD surface, the presence of the hydroxyl radical species on the reactant mixture, and the PEG coating together with the dye [61]. A hypothesis of the direct role of TiP-CD may be in the surface catalyzed hydroxyl radical formation, as described in Equation ( 25) for the case of H 2 O 2 [62]: TiP-CD + H 2 O 2 → TiP-CD + + OH − + *OH (25)…”

Section: Discussionmentioning

confidence: 99%

UV-Based Advanced Oxidation Processes of Remazol Brilliant Blue R Dye Catalyzed by Carbon Dots

Cardoso

Silva

et al. 2022

Nanomaterials

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UV-based advanced oxidation processes (AOPs) (UV/H2O2 and UV/S2O82-) with a titanium(IV)-doped carbon dot, TiP-CD, as a catalyst were developed for the decomposition of Remazol Brilliant Blue R (Reactive Blue 19), an anthraquinone textile dye (at T = 25 °C and pH = 7). The Ti-CD, with marked catalytic UV properties, was successfully synthesized by the one-pot hydrothermal procedure, using L-cysteine as carbon precursor, ethylenediamine as nitrogen source, PEG (polyethylene glycol) as a capping agent, and titanium(IV) isopropoxide (precursor of TiO2 doping). Contrary to azo dyes (methyl orange, orange II sodium salt, and reactive black 5), which achieved complete degradation in a time interval less than 30 min in the developed AOP systems (UV/H2O2, UV/S2O82-, and UV/TiO2), the RBB-R showed relatively low degradation rates and low discoloration rate constants. In the presence of the catalyzer, the reaction rate significantly increased, and the pseudo-first-order rate constants for the RBB-R discoloration were UV/3.0 mM H2O2/TIP-CD-0.0330 min−1 and UV/1.02 mM S2O82-/TIP-CD-0.0345 min−1.

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“…Therefore, hydrogen peroxide plays a decisive role in photocatalytic reaction and significantly promoted the photodegradation of methyl orange. Hydrogen peroxide H 2 O 2 combines with electrons to generate active-free radicals in the presence of preventing the recombination of electron hole pairs to improve the catalytic performance of photocatalytic materials and generating environmentally friendly H 2 O and CO 2 with methyl orange [41,42].…”

Section: Wwwmrsorg/jmrmentioning

confidence: 99%

MXene-derived TiO2/MXene-loaded Ag for the degradation of the methyl orange

Zhou

Jiresse

Zhang

et al. 2021

Journal of Materials Research

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The photodegradation technology can improve the status quo of environmental problems seriously which hindered the development and progress of human society. In this work, the two-dimensional transition metal carbide Ti 3 C 2 was prepared by HF etching of Ti 3 AlC 2 , and subsequently TiO 2 crystals were produced by hydrothermal method to prepare TiO 2 /Ti 3 C 2 composite. The Ag nanoparticles were then doped by photoreduction to form a ternary Ag/TiO 2 /Ti 3 C 2 composite. The effect of photocatalytic degradation of the methyl orange solution by Ag/TiO 2 /Ti 3 C 2 was investigated. The degradation only with Ag/TiO 2 /Ti 3 C 2 is worser than TiO 2 /Ti 3 C 2 , so H 2 O 2 was added to improve the catalytic ability and explore the photocatalytic mechanism. In 420 min, the degradation efficiency of methyl orange (MO) solution reached 71.09% due to the active-free radicals preventing the recombination of electron hole pairs to improve the catalytic performance of photocatalytic materials.

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Influence of hydrogen peroxide in enhancing photocatalytic activity of carbon nitride under visible light: An insight into reaction intermediates

Cited by 74 publications

References 41 publications

SnO2–Fe3O4 nanocomposites for the photodegradation of the Congo red dye

SnO2–Fe3O4 nanocomposites for the photodegradation of the Congo red dye

UV-Based Advanced Oxidation Processes of Remazol Brilliant Blue R Dye Catalyzed by Carbon Dots

MXene-derived TiO2/MXene-loaded Ag for the degradation of the methyl orange

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