S-scheme Ag2CrO4/g-C3N4 photocatalyst for effective degradation of organic pollutants under visible light

Rajalakshmi, N.; Barathi, D.; Meyvel, S.; Sathya, P.

doi:10.1016/j.inoche.2021.108849

Cited by 20 publications

(12 citation statements)

References 36 publications

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“…The peak shape of BC/g-C 3 N 4 was basically the same as those of g-C 3 N 4 , and the characteristic peaks of BC/g-C 3 N 4 were weakened. This phenomenon indicated that the BC-loaded g-C 3 N 4 was not a simple physical mixing but formed a compact structure with lower energy [28]. Figure 3b shows the XRD diffraction pattern of BC, g-C 3 N 4 , and BC/g-C 3 N 4 .…”

Section: Ftir and Xrd Analysismentioning

confidence: 98%

“…g-C 3 N 4 is a new type of non-metallic semiconductor photocatalytic material [27]. It has a large specific surface area, suitable energy band, and high photosensitivity, and can be regarded as a promising photocatalyst in the remediation of soil [28][29][30]. For example, Luo et al [31] prepared g-C 3 N 4 by three different precursors, including urea, dicyandiamide, and melamine, via the conventional thermal polymerization method.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Enhanced Remediation of Petroleum-Contaminated Soil by Biochar/g-C3N4 Composites

Lin

Yang

Shang

et al. 2022

IJERPH

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This work developed an environmentally-friendly soil remediation method based on BC and g-C3N4, and demonstrated the technical feasibility of remediating petroleum-contaminated soil with biochar/graphite carbon nitride (BC/g-C3N4). The synthesis of BC/g-C3N4 composites was used for the removal of TPH in soil via adsorption and photocatalysis. BC, g-C3N4, and BC/g-C3N4 have been characterized by scanning electron microscopy (SEM), Brunauer–Emmett–Teller surface area analyzer (BET), FT-IR, and X-ray diffraction (XRD). BC/g-C3N4 facilitates the degradation due to reducing recombination and better electron-hole pair separation. BC, g-C3N4, and BC/g-C3N4 were tested for their adsorption and photocatalytic degradation capacities. Excellent and promising results are brought out by an apparent synergism between adsorption and photocatalysis. The optimum doping ratio of 1:3 between BC and g-C3N4 was determined by single-factor experiments. The removal rate of total petroleum hydrocarbons (TPH) by BC/g-C3N4 reached 54.5% by adding BC/g-C3N4 at a dosing rate of 0.08 g/g in a neutral soil with 10% moisture content, which was 2.12 and 1.95 times of BC and g-C3N4, respectively. The removal process of TPH by BC/g-C3N4 conformed to the pseudo-second-order kinetic model. In addition, the removal rates of different petroleum components in soil were analyzed in terms of gas chromatography–mass spectrometry (GC-MS), and the removal rates of nC13-nC35 were above 90% with the contaminated soil treated by BC/g-C3N4. The radical scavenger experiments indicated that superoxide radical played the major role in the photocatalytic degradation of TPH. This work definitely demonstrates that the BC/g-C3N4 composites have great potential for application in the remediation of organic pollutant contaminated soil.

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Section: Ftir and Xrd Analysismentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Study on the Enhanced Remediation of Petroleum-Contaminated Soil by Biochar/g-C3N4 Composites

Lin

Yang

Shang

et al. 2022

IJERPH

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“…Thus, after five recycles tests, the photoreduction rate decreased to 90%. Other work on Cr(VI) photoreduction was reported by Rajalakshmi et al The work presented the preparation of S-scheme Ag 2 CrO 4 /g-C 3 N 4 nanocomposite by a facile hydrothermal method (Rajalakshmi et al, 2021). The photoactivity of the fabricated photocatalysts was examined towards Cr(VI) reduction and 2NP removal beneath visible light exposure.…”

Section: Heavy Metal Ion Removalmentioning

confidence: 99%

“…(g) The proposed S-scheme charge transfer route presenting electron transference in Ag 2 CrO 4 /g-C 3 N 4 nanocomposite, Reprinted with permission from Elsevier (License No. 5431721336543) (Rajalakshmi et al, 2021).…”

Section: Hydrogen Evolutionmentioning

confidence: 99%

“…Consequently, visible-light-responsive photocatalysts with tremendous photocatalytic ability grabbed the attention of researchers and have been employed for various photocatalytic applications (Kumar et al, 2018;Pirhashemi et al, 2018;Zhou et al, 2021). The photo-oxidation caused by visible light is more promising as visible light is easily accessible, harmless for living organisms and contains ~45% part of solar irradiation (Brillas et al, 2015;Reddy et al, 2016;Wang et al, 2016). In this context, carriers split-up.…”

Section: Introductionmentioning

confidence: 99%

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Applications of graphitic carbon nitride-based S-scheme heterojunctions for environmental remediation and energy conversion

Sudhaik

SONU

Hasija

et al. 2023

Nanofab

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The contemporary era's top environmental problems include the lack of energy, recycling of waste resources, and water pollution. Due to the speedy growth of modern industrialization, the utilization of non-renewable sources has increased rapidly, which has caused many serious environmental and energy issues. In photocatalysis, as a proficient candidate, g-C3N4 (metal-free polymeric photocatalyst) has gained much attention due to its auspicious properties and excellent photocatalytic performance. But, regrettably, the quick recombination of photoinduced charge carriers, feeble redox ability, and inadequate visible light absorption are some major drawbacks of g-C3N4 that hamper its photocatalytic ability. Henceforth, these significant limitations can be solved by incorporating modification strategies. Among all modification techniques, the amalgamation of g-C3N4 with two or more photocatalytic semiconducting materials via heterojunction formation is more advantageous. In this review, we have discussed various modification strategies, including conventional, Z-scheme and S-scheme heterojunctions. S-scheme heterojunction is consideredan efficient and profitable charge transferal pathway due to the excellent departure and transferal of photoexcited charge carriers with outstanding redox ability. Consequently, the current review is focused on various photocatalytic applications of S-scheme-based g-C3N4 photocatalysts in pollutant degradation, H2 production, and CO2 reduction.

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Design Ag-Based Semiconductors for Antimicrobial Technologies: Challenges and Future Trends

Braga,

Trindade,

Ramos

et al. 2024

Nanomaterials for Biomedical and Bioengineering Applications

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S-scheme Ag2CrO4/g-C3N4 photocatalyst for effective degradation of organic pollutants under visible light

Cited by 20 publications

References 36 publications

Study on the Enhanced Remediation of Petroleum-Contaminated Soil by Biochar/g-C3N4 Composites

Study on the Enhanced Remediation of Petroleum-Contaminated Soil by Biochar/g-C3N4 Composites

Applications of graphitic carbon nitride-based S-scheme heterojunctions for environmental remediation and energy conversion

Design Ag-Based Semiconductors for Antimicrobial Technologies: Challenges and Future Trends

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