Preparation of visible-light photocatalysts of Bi2O3/Bi embedded in porous carbon from Bi-based metal organic frameworks for highly efficient Rhodamine B removal from water
Source abstract
Abstract
A series of ternary composite photocatalysts of Bi2O3/Bi embedded in porous carbon (Bi2O3/Bi/PC) was prepared by the high-temperature pyrolysis of a bismuth-based metal organic framework (CAU-17(Bi)). They were used as photocatalysts for the degradation of organic Rhodamine B dye (RhB) in water under visible light. Results showed that the Bi2O3/Bi/PC composites with different Bi2O3/Bi ratios could be obtained through changing the extent of the carbothermal reduction of Bi2O3 during pyrolysis. The photocatalystpyrolyzed at 800 oC showed the highest photocatalytic performance and had a wide applicable pH value range and excellent recyclability and stability.The components in the ternary composites exhibited a synergetic effect in the removal of RhB, where Bi2O3 acted as a low-band gap semiconductor, metallic Bi transferred electrons generated by visible light excitation to the graphitic structure in porous carbon to inhibit the recombination of electrons with holes. The holes and peroxide radicals were the main active species. This study provides a new way for the design and preparation of visible-light active and high-performance photocatalysts for organic contaminant degradation in aqueous media by using metal organic frameworks as a multicomponent precursor.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Covalent Organic Framework Applications · Metal-Organic Frameworks: Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Enhancement of UV-assisted TiO2 degradation of ibuprofen using Fenton hybrid process at circumneutral pH[J]10.1016/S1872-2067(18)63070-0 ↗
2. Research progress of the application of graphene-based materials in the treatment of water pollutants[J]
3. Environment-Friendly Carbon Quantum Dots/ZnFe2O4 Photocatalysts: Characterization, Biocompatibility, and Mechanisms for NO Removal[J]10.1021/acs.est.6b04460 ↗
4. Effects of surface oxygen functional groups on activated carbon on the adsorption and photocatalytic degradation activities of a TiO2-AC hybrid for methylene blue and methylene orange[J]
5. Hydrothermal synthesis of magnetic graphene-BiFeO3 hybrids and their photocatalytic properties[J]
6. Highly efficient visible-light photocatalyst based on cellulose derived carbon nanofiber/BiOBr composites[J]10.1007/s10570-018-1851-y ↗
7. Facile formation of metallic bismuth/bismuth oxide heterojunction on porous carbon with enhanced photocatalytic activity[J]10.1016/j.jcis.2017.11.011 ↗
8. Enhanced photocatalytic degradation of ciprofloxacin over Bi2O3/(BiO)2CO3heterojunctions: Efficiency, kinetics, pathways, mechanisms and toxicity evaluation[J]10.1016/j.cej.2017.10.064 ↗
9. β-Bi2O3 and Er3+ doped β-Bi2O3 single crystalline nanosheets with exposed reactive {001} facets and enhanced photocatalytic performance[J]10.1016/j.apcatb.2013.04.009 ↗
10. Facile large-scale synthesis of β-Bi2O3 nanospheres as a highly efficient photocatalyst for the degradation of acetaminophen under visible light irradiation[J]10.1016/j.apcatb.2013.04.037 ↗
11. The fabrication of bio-renewable and recyclable cellulose based carbon microspheres incorporated by CoFe2O4 and the photocatalytic properties[J]10.1016/j.jclepro.2018.06.086 ↗
12. Modified metal-organic frameworks as photocatalysts[J]10.1016/j.apcatb.2018.03.039 ↗
13. Multifunctional ZnO-porous carbon composites derived from MOF-74(Zn) with ultrafast pollutant adsorption capacity and supercapacitance properties[J]10.1016/j.jcis.2019.07.015 ↗
14. Design and self-assembly of metal-organic framework-derived porous Co3O4 hierarchical structures for lithium-ion batteries[J]10.1016/j.ceramint.2015.12.038 ↗
15. A novel metal–organic framework based on bismuth and trimesic acid: synthesis, structure and properties[J]10.1039/C5DT03111G ↗
16. Graphitic carbon nitride based nanocomposites for the photocatalysis of organic contaminants under visible irradiation: Progress, limitations and future directions[J]10.1016/j.scitotenv.2018.03.206 ↗
17. Synthesis and photocatalytic properties of metastable β-Bi2O3 stabilized by surface-coordination effects[J]10.1039/C4TA06235C ↗
18. Synthesis of Ag/BiVO4/rGO composite with enhanced photocatalytic degradation of triclosan[J]10.1016/j.scitotenv.2019.02.027 ↗
19. Novel Z-scheme visible-light photocatalyst based on CoFe2O4/BiOBr/Graphene composites for organic dye degradation and Cr(VI) reduction[J]10.1016/j.apsusc.2019.02.017 ↗
20. High-efficient visible-light photocatalyst based on graphene incorporated Ag3PO4 nanocomposite applicable for the degradation of a wide variety of dyes[J]10.1016/j.jphotochem.2017.02.022 ↗
21. Selective reduction of graphene oxide[J]10.1016/S1872-5805(14)60126-8 ↗
22. Nanostructured β-Bi2O3Fractals on Carbon Fibers for Highly Selective CO2 Electroreduction to Formate[J]
23. Activated graphene-derived porous carbon with exceptional gas adsorption properties[J]10.1016/j.micromeso.2015.08.021 ↗
24. Enhanced photocatalytic activity of a TiO2/graphene composite by improving the reduction degree of graphene[J]10.1016/S1872-5805(15)60195-0 ↗
25. One-pot synthesis of C/Bi/Bi2O3 composite with enhanced photocatalytic activity[J]10.1016/j.apcatb.2017.07.030 ↗
26. Magnetic cobaltic nanoparticle-anchored carbon nanocomposite derived from cobalt-dipicolinic acid coordination polymer: An enhanced catalyst for environmental oxidative and reductive reactions[J]10.1016/j.jcis.2017.12.076 ↗
27. Synthesis and characterization of sucrose and ammonium dihydrogen phosphate (SADP) adhesive for plywood[J]10.3390/polym11121909 ↗
28. A. Mohamed, Bi2O3 particles decorated on porous g-C3N4 sheets: Enhanced photocatalytic activity through a direct Z-scheme mechanism for degradation of Reactive Black 5 under UV–vis light[J]10.1016/j.jphotochem.2019.112289 ↗
29. Promoting Fe3+/Fe2+ cycling under visible light by synergistic interactions between P25 and small amount of Fenton reagents[J]10.1016/j.jhazmat.2019.120795 ↗