Study on the interaction of anions and cations in the synthesis of nanoflower bismuth silicate and its photocatalytic removal of dyes and antibiotics
Source abstract
Abstract
It is challenging to construct photocatalysts with excellent adsorption-photocatalytic synergy and multi-system pollutant degradation by utilizing double heterostructure with unique nanoflower structure and energy band modulation. Here, a nanoflower-like double-heterojunction composite photocatalyst with high visible light activity is prepared in situ by ion exchange, namely BOSBM (M=I, B, C, K, L; the modified ions are I -, Br -, Cl -, K - and Li -). On the other hand, surface-charged ions provide multiple adsorption sites for pollutants. In BOSBC-6 (the ion is Cl -, the concentration is 1.05 mol/L) photocatalyst, the photocatalytic performance (10 min, degradation rate of 98 %) is 4 times that of BOS. It still has excellent catalytic stability (30 min, 98 % degradation rate) even after 3 cycles of testing. Meanwhile, BOSBM exhibited high degradation efficiency for dye (RhB) and various antibiotics (norfloxacin, ciprofloxacin, and tetracycline hydrochloride). Due to its upward shifting structure (Vo level), BOSBM plays an important role in the degradation of multi-system pollutants. In particular, the formation of Bi 2O 2SiO 3-BiOCl and Si 2Bi 24O 40 -BiOCl double heterojunctions in BOSBC-6, which significantly improves the separation efficiency and increases the redox capacity of the sample. Therefore, this work broadens the application range of bismuth silicate photocatalysts and provides a new strategy for obtaining photocatalysts with excellent adsorption-photocatalytic synergistic effect by utilizing the heterojunction structure for modification purposes.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Covalent Organic Framework Applications · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (54)
Show source-provided references
1. Nanostructured materials for photocatalysis10.1039/C9CS00102F ↗
2. Toward designing semiconductor-semiconductor heterojunctions for photocatalytic applications10.1016/j.apsusc.2017.07.192 ↗
3. Semiconductor based photocatalytic degradation of pesticides: an overview10.1016/j.eti.2020.101128 ↗
4. Structure/Property Control in Photocatalytic Organic Semiconductor Nanocrystals - Chen - 2021 - Advanced Functional Materials - Wiley Online Library, (n.d.). https://onlinelibrary.wiley.com/doi/abs/ 〈10.1002/adfm.202104099〉 (accessed October 17, 2022).
5. Heterojunction nanomedicine10.1002/advs.202105747 ↗
6. Defect-mediated electron–hole separation in semiconductor photocatalysis10.1039/C8QI00122G ↗
7. Photocatalytic reduction on Bismuth-based p-block semiconductors10.1021/acssuschemeng.8b04977 ↗
8. Synthesis and characterization of Bi4Si3O12, Bi2SiO5, and Bi12SiO20 by controlled hydrothermal method and their photocatalytic activity10.1016/j.jtice.2017.05.021 ↗
9. Preparation of Ag–Bi12SiO20/Bi2SiO5 with high visible light photocatalytic property: the synergistic effect of the heterojunction and the heterogeneous interface
10. Enhancing the photocatalytic performance of Bi12SiO20 by in situ grown Bi2O2CO3 and Bi through two-step light irradiation method10.1016/j.apsusc.2020.146355 ↗
11. Bismuth silicate photocatalysts with enhanced light harvesting efficiency by photonic crystal10.1016/j.jallcom.2019.151839 ↗
12. BiOCl nanosheets with periodic nanochannels for high-efficiency photooxidation10.1016/j.nanoen.2020.105340 ↗
13. Photocatalytic degradation of ibuprofen on S-doped BiOBr10.1016/j.chemosphere.2021.130376 ↗
14. Facile synthesis of magnetic Fe3O4@BiOI@AgI for water decontamination with visible light irradiation: different mechanisms for different organic pollutants degradation and bacterial disinfection10.1016/j.watres.2018.03.027 ↗
15. Consciously constructing heterojunction or direct Z-scheme photocatalysts by regulating electron flow direction10.1021/acscatal.7b04323 ↗
16. Hollow nanoboxes Cu2-xS@ZnIn2S4 core-shell S-scheme heterojunction with broad-spectrum response and enhanced photothermal-photocatalytic performance
17. 2D/2D heterojunctions for catalysis10.1002/advs.201801702 ↗
18. Porous graphene oxide/chitosan nanocomposites based on interfacial chemical interactions10.1016/j.eurpolymj.2019.07.032 ↗
19. Biological ion exchange capable of sulphate-based secondary ion exchange during long-term DOC removal10.1016/j.watres.2021.117036 ↗
20. In-situ construction of Bi2SiO5/BiOBr heterojunction with significantly improved photocatalytic activity under visible light10.1016/j.jallcom.2019.06.195 ↗
21. A homojunction–heterojunction–homojunction scaffold boosts photocatalytic H2 evolution over Cd0.5Zn0.5S/CoO hybrids10.1039/C9TA11915A ↗
22. Removal of anthracenemethanol from soil through a magnetic system assisted by ceramsite coated with nanoflower-structured carbon and preparation for its engineering application10.1016/j.cej.2017.07.074 ↗
23. Surface-enhanced Raman scattering from amorphous nanoflower-structural Nb2O5 fabricated by two-step hydrothermal technology10.1016/j.matdes.2020.108808 ↗
24. Enhancement of double heterojunction Bi12SiO20-Bi2O2SiO3-BiOXmYn with high adsorption-visible catalytic performance: synergistic effect of morphology regulation and controllable energy band10.1016/j.molliq.2021.118065 ↗
25. Studies on the active radicals in synthesized inverse opal photonic crystal and its effect on photocatalytic removal of organic pollutants10.1016/j.molliq.2020.114414 ↗
26. Supercritical CO2-constructed intralayer [Bi2O2]2+ structural distortion for enhanced CO2 electroreduction10.1039/D0TA04163G ↗
27. Development of a novel visible light-driven Bi2O2SiO3-Si2Bi24O40 photocatalyst with cross-linked sheet layered: the conversion of lattice oxygen to adsorbed oxygen improves catalytic activity10.1016/j.jallcom.2021.162324 ↗
28. Low temperature synthesis and photocatalytic performances of pure Bi2SiO5 powders via pechini sol–gel method
29. One-step synthesis of novel Bi/Bi2SiO5 flower-like composites with highly-efficient CO2 photoreduction performance10.1016/j.coco.2020.100366 ↗
30. Low temperature synthesis and photocatalytic performances of pure Bi2SiO5 powders via pechini sol–gel method | SpringerLink, (n.d.). 〈https://link.springer.com/article/10.1007/s10854–017-6811-z?utm_source=xmol&utm_medium=affiliate&utm_content=meta&utm_campaign=DDCN_1_GL01_metadata〉 (accessed September 20, 2022).
31. Hybrid PDI/BiOCl heterojunction with enhanced interfacial charge transfer for a full-spectrum photocatalytic degradation of pollutants10.1039/C9CY01722D ↗
32. BiVO4/TiO2 core-shell heterostructure: wide range optical absorption and enhanced photoelectrochemical and photocatalytic performance
33. One-pot solvothermal fabrication of S-scheme OVs-Bi2O3/Bi2SiO5 microsphere heterojunctions with enhanced photocatalytic performance toward decontamination of organic pollutants10.1016/j.apsusc.2020.146775 ↗
34. Synergetic photocatalytic fuel cell and CuFe layered doubled hydroxide as photoactivator of persulfate for dramatically electricity generation of organic pollutants degradation10.1016/j.apcatb.2022.121894 ↗
35. Electrogenerated quinone intermediates mediated peroxymonosulfate activation toward effective water decontamination and electrode antifouling10.1016/j.apcatb.2022.121980 ↗
36. Plasmonic Bi metal as cocatalyst and photocatalyst: The case of Bi/(BiO)2CO3 and Bi particles10.1016/j.jcis.2016.09.018 ↗
37. Transformation pathway and toxic intermediates inhibition of photocatalytic NO removal on designed Bi metal@defective Bi2O2SiO310.1016/j.apcatb.2018.09.032 ↗
38. Photocatalytic activity of bismuth silicate heterostructures synthesized via surfactant mediated sol-gel method10.1016/j.mssp.2019.104589 ↗
39. Synthesis of BixTiyOz/TiO2 heterojunction with enhanced visible-light photocatalytic activity and mechanism insight10.1016/j.jallcom.2019.151791 ↗
40. Transition metal ions doped Bi12SiO20 as novel catalysts for the decomposition of hydrogen peroxide (H2O2)10.1016/j.jtice.2021.03.037 ↗
41. Oxygen‐vacancy‐enhanced singlet oxygen production for selective photocatalytic oxidation10.1002/cssc.202000595 ↗
42. Synthesis of Bi3O4Cl nanosheets with oxygen vacancies: the effect of defect states on photocatalytic performance10.1016/j.apsusc.2019.144806 ↗
43. Step-scheme NiO/BiOI heterojunction photocatalyst for rhodamine photodegradation10.1016/j.apsusc.2020.145499 ↗
44. Controllable construction 2D-CN photocatalyst for degradation MBT and mechanism insights10.1016/j.materresbull.2022.112093 ↗
45. Photocatalytic degradation of rhodamine B by Bi2O3@LDHs S–scheme heterojunction: performance, kinetics and mechanism10.1016/j.apsusc.2021.150760 ↗
46. Probing ring-opening pathways for efficient photocatalytic toluene decomposition10.1039/C8TA11627J ↗
47. Unravelling the rate controlling step in degradation of phenol on a higher potential photocatalyst10.1016/j.jece.2020.103938 ↗
48. Development of a novel visible light-driven Bi2O2SiO3-Si2Bi24O40 photocatalyst with cross-linked sheet layered: the conversion of lattice oxygen to adsorbed oxygen improves catalytic activity10.1016/j.jallcom.2021.162324 ↗
49. Efficient photocatalytic CO2 conversion over 2D/2D Ni-doped CsPbBr3/Bi3O4Br Z-scheme heterojunction: critical role of Ni doping, boosted charge separation and mechanism study10.1016/j.apcatb.2022.121895 ↗
50. Fabrication of visible-light-active MR/NH2-MIL-125(Ti) homojunction with boosted photocatalytic performance10.1016/j.cej.2021.128722 ↗
51. The construction of photonic crystal/Cu2+ doped TiO2-SiO2 multilayer structured film for enhanced visible light photocatalytic performance: The synergistic effect between the different layers10.1016/j.jallcom.2022.164768 ↗
52. Fabrication of visible-light-active Fe-2MI film electrode for simultaneous removal of Cr(VI) and phenol10.1016/j.mssp.2022.107013 ↗
53. MOF-based DNA hydrolases optimized by atom engineering for the removal of antibiotic-resistant genes from aquatic environment10.1016/j.apcatb.2022.121931 ↗
54. Insights into the performance, mechanism, and ecotoxicity of levofloxacin degradation in CoFe2O4 catalytic peroxymonosulfate process