Photocatalytic activity of hydroxyapatite deposited graphene nanosheets under illumination to sunlight
Source abstract
Abstract
Abstract Herein, an intelligent, sunlight active photocatalyst, GR-HAP has been developed by synthetic modification of graphene (GR) nanosheets through in-situ deposition of hydroxyapatite (HAP). The photocatalytic efficiency of GR-HAP was evaluated by degradation of industrially important and versatile used azo dyes, viz., methyl orange, methylene blue and rhodamine B under illumination to natural sunlight. GR-HAP was capable in complete degradation of all dyes in presence of sunlight. It was estimated that with GR-HAP, rate for degradation of anionic dye, methyl orange was higher than cationic dyes, methylene blue and rhodamine B. Further, degradation rate of dyes was quantified using Langmuir–Hinshelwood (L–H) model and it found that degradation of dyes proceed through pseudo-first-order reaction. In addition to excellence in photocatalytic activity, GR-HAP possessed prominent stability against photocorrosiveness and photobleaching.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Carbon and Quantum Dots Applications · Graphene and Nanomaterials Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Synthesis of microspherical structures of bismuth oxychloride (BiOCl) towards the degradation of reactive orange 84 dye with sunlight10.1016/j.mssp.2020.105086 ↗
2. ZnO-graphene quantum dots heterojunctions for natural sunlight-driven photocatalytic environmental remediation10.1016/j.apsusc.2018.04.045 ↗
3. Effective removal of organic pollutants using GeO2/TiO2 nanoparticle composites under direct sunlight10.1039/C7QM00492C ↗
4. An overview of solar/visible light-driven heterogeneous photocatalysis for water purification: tiO2 and ZnO-based photocatalysts used in suspension photoreactors10.1016/j.jiec.2018.11.025 ↗
5. Survival assessment of simple food webs for dye wastewater after photocatalytic degradation using SnO2/GO nanocomposites under sunlight irradiation
6. Designing AgFeO2-graphene/Cu2(BTC)3 MOF heterojunction photocatalysts for enhanced treatment of pharmaceutical wastewater under sunlight
7. ZnO conjugated graphene: an efficient sunlight driven photocatalyst for degradation of organic dyes10.1016/j.materresbull.2020.110911 ↗
8. Photocatalytic activity improvement and application of UV-TiO2 photocatalysis in textile wastewater treatment: a review10.1016/j.jece.2019.103248 ↗
9. Degradation of methylene blue and methyl orange by palladium-doped TiO2 photocatalysis for water reuse: efficiency and degradation pathways10.1016/j.jclepro.2018.08.110 ↗
10. Fabrication of chemically modified graphene oxide/nano hydroxyapatite composite for adsorption and subsequent photocatalytic degradation of aureomycine hydrochloride10.1016/j.jiec.2016.12.014 ↗
11. Preparation, evaluations and operating conditions optimization of nano TiO2 over graphene based materials as the photocatalyst for degradation of phenol10.1016/j.jphotochem.2018.05.032 ↗
12. Ultrasound assisted preparation of rGO/TiO2 nanocomposite for effective photocatalytic degradation of methylene blue under sunlight10.1016/j.nanoso.2019.100407 ↗
13. Ag nanoparticle-impregnated sulfonated graphene/TiO2 composite for the photocatalytic removal of organic pollutants10.1016/j.apsusc.2020.145629 ↗
14. Photothermal effect: an important aspect for the enhancement of photocatalytic activity under illumination by NIR radiation10.1039/C7QM00337D ↗
15. Photocatalytic activity and NIR laser response of polyaniline conjugated graphene nanocomposite prepared by a novel acid-less method10.1016/j.apcatb.2016.01.009 ↗
16. ZnO and cobalt phthalocyanine hybridized graphene: efficient photocatalysts for degradation of rhodamine B10.1016/j.jcis.2014.04.053 ↗
17. Graphene-coupled ZnO: a robust NIR-induced catalyst for rapid photo-oxidation of cyanide10.1021/acsomega.7b01398 ↗
18. ZnO–graphene composites with high photocatalytic activities under visible light10.1039/C6RA19622E ↗
19. Preparation of graphitic oxide10.1021/ja01539a017 ↗
20. In situ deposition of hydroxyapatite on graphene nanosheets10.1016/j.materresbull.2012.08.077 ↗
21. Hydroxyapatite decorated TiO2 as efficient photocatalyst for selective reduction of CO2 with H2O into CH410.1016/j.ijhydene.2018.10.045 ↗
22. Modified Fe3O4-hydroxyapatite nanocomposites as heterogeneous catalysts in three UV, Vis and Fenton like degradation systems10.1016/j.apsusc.2014.07.139 ↗
23. One-pot synthesis of graphene/hydroxyapatite nanorod composite for tissue engineering10.1016/j.carbon.2013.09.016 ↗
24. Hydroxyapatite/gelatin functionalized graphene oxide composite coatings deposited on TiO2nanotube by electrochemical deposition for biomedical applications10.1016/j.apsusc.2014.12.115 ↗
25. Influence of carbon nanotubes and graphene nanosheets on photothermal effect of hydroxyapatite10.1016/j.jcis.2016.07.078 ↗
26. Synthesis, physicochemical and electrical characterizations of graphene oxide–hydroxyapatite nanocomposites10.1166/asem.2014.1614 ↗
27. Novel design of porous hollow hydroxyapatite microspheres decorated by reduced graphene oxides with superior photocatalytic performance for tetracycline removal10.1016/j.solidstatesciences.2019.106067 ↗
28. Synthesis and characterisation of nanophase hydroxyapatite co-substituted with strontium and zinc10.1016/j.ceramint.2018.01.206 ↗
29. Three-dimensionally N‑doped graphene-hydroxyapatite/agarose as an osteoinductive scaffold for enhancing bone regeneration10.1021/acsabm.8b00599 ↗
30. XPS study of a photopolymerized C60 film10.1103/PhysRevB.55.10051 ↗
31. X-ray photoelectron spectroscopy: Towards reliable binding energy Referencing10.1016/j.pmatsci.2019.100591 ↗
32. Hing Surface charge and the effect of excess calcium ions on the hydroxyapatite surface10.1016/j.biomaterials.2005.04.060 ↗
33. Graphene oxide/hydroxyapatite composite coatings fabricated by electrophoretic nanotechnology for biological applications10.1016/j.carbon.2013.09.080 ↗
34. Developing titania-hydroxyapatite-reduced graphene oxide nanocomposite coatings by liquid flame spray deposition for photocatalytic applications10.1016/j.jeurceramsoc.2017.02.029 ↗