Electrospun Zn-doped Ga2O3 nanofibers and their application in photodegrading rhodamine B dye

Du, Fenqi; Yang, Dongmei; Sun, Yue; Jiao, Yang; Teng, Feng; Fan, Heng

doi:10.1016/j.ceramint.2020.10.072

Cited by 22 publications

(14 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…the corresponding surface redox reaction. [178,179] Nevertheless, except for the photocatalytic activity, the long-term stability of HPs photocatalysts is also the key to the long-scale practical application in the optoelectronic field. Namely, it's urgent to improve the stability of HPs under the premise of ensuring high photocatalytic activity.…”

Section: Stability Of Photocatalytic Applications Over Halide Perovsk...mentioning

confidence: 99%

“…The green and effective photocatalytic technology based on the promising HPs has been extensively developed, which includes three steps: i) the generation of electron‐hole pairs under illumination, ii) the migration of photoinduced charge carriers, and iii) the corresponding surface redox reaction. [ 178,179 ] Nevertheless, except for the photocatalytic activity, the long‐term stability of HPs photocatalysts is also the key to the long‐scale practical application in the optoelectronic field. Namely, it's urgent to improve the stability of HPs under the premise of ensuring high photocatalytic activity.…”

Section: Stability Of Photocatalytic Applications Over Halide Perovsk...mentioning

confidence: 99%

See 1 more Smart Citation

Improving the Stability of Halide Perovskites for Photo‐, Electro‐, Photoelectro‐Chemical Applications

Du,

Liu,

Liao

et al. 2023

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

Owing to their remarkable and adjustable optoelectronic properties, halide perovskites (HPs) have been regarded as a class of promising materials for various optoelectronic applications based on different energy conversion reactions, including photovoltaic cell, photocatalysis, electrocatalysis, and photoelectrochemical (PEC) systems. However, the low stability of HPs upon exposure to ambient conditions (e.g., water, heat, light, electricity) greatly hinders the practical applications of HPs. In the past few years, significant efforts have been devoted to enhancing the eventual stability of the perovskite‐based optoelectronic systems, mainly focusing on delivering improvements in the stabilities of halide perovskite materials and the relevant operation conditions of optoelectronic systems, which deserve in‐depth and systematic summaries. In this comprehensive review, the in‐depth environment‐induced decomposition mechanisms of typical HPs are elucidated. Simultaneously, the strategies for addressing the instability issues of halide perovskite materials are critically reviewed, including dimension control, compositional engineering, ligand passivation, and encapsulation engineering. Furthermore, the photoelectric applications based on the modified HPs and operation conditions are discussed systematically. In the last part of this review, future perspectives and outlooks toward the stability of HPs and their photoelectric applications are envisaged respectively.

show abstract

Section: Stability Of Photocatalytic Applications Over Halide Perovsk...mentioning

confidence: 99%

Section: Stability Of Photocatalytic Applications Over Halide Perovsk...mentioning

confidence: 99%

Improving the Stability of Halide Perovskites for Photo‐, Electro‐, Photoelectro‐Chemical Applications

Du,

Liu,

Liao

et al. 2023

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Practically, doping is a commonly used method for improving the charge carrier separation efficiency and light absorption in semiconductors. Metal ion doping, like Sr 2+ in SnO 2 , Zn 2+ in Ga 2 O 3 nanofibers, and the others, ,, could introduce defects like oxygen vacancies with energy levels located within the bandgap of the oxides, and these oxygen vacancies acted as trapping states for electrons, such that the recombination of the photogenerated carriers was inhibited. Moreover, the bandgap of the material could be reduced, and thus, the light absorption band could be broader to enable a higher utilization efficiency of the light.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Degradation of Rhodamine B Dye by Iron-Doped Europium Oxide Nanoparticles

Zhao,

Jing,

Dai

et al. 2024

ACS Omega

View full text Add to dashboard Cite

As a wide-bandgap rare-earth oxide, Eu2O3 was often utilized as an auxiliary material of other photocatalysts because its photocatalytic performance was limited by the luminescence characteristics of Eu3+ and low light utilization. In this study, we improved the photocatalytic degradation performance of the Eu2O3 nanoparticles by doping with Fe cations. The Eu2O3 nanoparticles with different Fe-doping concentrations (1, 3, and 5%, noted as EF1.0, EF3.0, and EF5.0, respectively) were synthesized via chemical precipitation and calcination methods. It was found that doping could reduce Eu2O3’s bandgap, which probably originated from the introduction of oxygen vacancies with lower energy levels than the conduction band of Eu2O3. Compared with the undoped Eu2O3 nanoparticles with a removal efficiency of 22% for degrading rhodamine B dye within 60 min, the photocatalytic degradation efficiencies of EF1.0, EF3.0, and EF5.0 were demonstrated to be improved to 42, 48, and 33%, respectively, and EF3.0’s performance was the best. The enhanced photocatalytic performance of the doped samples was related to the oxygen vacancies acting as capture centers for electrons, such that the photogenerated electron–hole pairs were efficiently separated and the redox reactions on the surface of the nanoparticles were enhanced accordingly. Additionally, the enhanced light absorption and broadened spectral band further improved EF3.0’s degradation efficiency.

show abstract

“…In other words, the photocatalyst with a wide band gap meets the following conditions: the conduction band (CB) is lower than the reduction potential of water (−0.046 eV) and the valence band (VB) is higher than the oxidation potential of water (2.38 eV), normally demonstrating strong redox ability and high degradation capacity. − As a commonly seen wide band gap photocatalyst, titanium dioxide (TiO 2 ) ( E g > 3.0 eV for both rutile and anatase TiO 2 ) proved to be capable of organic pollutant degradation under irradiation with ultraviolet (UV) light. − Nevertheless, due to the low solar energy utilization and high carrier recombination rate, its application in photocatalytic degradation is limited. Accordingly, excavating photocatalysts with a broad light adsorption spectrum and a low electron–hole recombination − is a topic that needs continuous exploration.…”

Section: Introductionmentioning

confidence: 99%

Ag Nanoparticles Supported on h-BN/BiPO₄ Heterostructures as a Photocatalyst for the Degradation of Rhodamine B

Li,

Song,

Zhao

et al. 2024

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

With increasing environmental pollution, the utilization of green techniques, such as photocatalysis, is required to degrade harmful sources without secondary pollution. In this study, we synthesized an efficient photocatalyst, i.e., a h-BN/BiPO 4 heterostructure modified by Ag nanoparticles at the interface (Ag/ BN/BPO) by photodeposition and a hydrothermal method, and investigated photocatalytic degradation performance for rhodamine B dye (RhB). It was found that 95% of RhB was removed by Ag/ BN/BPO (optimal ratio) after 60 min of light exposure. Compared to BiPO 4 and BN/BiPO 4 , the removal efficiency was improved by 50 and 30%, respectively. The high photocatalytic degradation activity of Ag/BN/BPO could be possibly attributed to the synergistic effect of the improved separation efficiency of electron− hole pairs by the special heterostructure design and the increased adsorption capacity due to the large specific surface area of the layered h-BN. This study provided a possible route for the development of highly efficient photocatalysts for the degradation of organic pollutants.

show abstract

Electrospun Zn-doped Ga2O3 nanofibers and their application in photodegrading rhodamine B dye

Cited by 22 publications

References 63 publications

Improving the Stability of Halide Perovskites for Photo‐, Electro‐, Photoelectro‐Chemical Applications

Improving the Stability of Halide Perovskites for Photo‐, Electro‐, Photoelectro‐Chemical Applications

Enhanced Photocatalytic Degradation of Rhodamine B Dye by Iron-Doped Europium Oxide Nanoparticles

Ag Nanoparticles Supported on h-BN/BiPO₄ Heterostructures as a Photocatalyst for the Degradation of Rhodamine B

Contact Info

Product

Resources

About

Electrospun Zn-doped Ga2O3 nanofibers and their application in photodegrading rhodamine B dye

Cited by 22 publications

References 63 publications

Improving the Stability of Halide Perovskites for Photo‐, Electro‐, Photoelectro‐Chemical Applications

Improving the Stability of Halide Perovskites for Photo‐, Electro‐, Photoelectro‐Chemical Applications

Enhanced Photocatalytic Degradation of Rhodamine B Dye by Iron-Doped Europium Oxide Nanoparticles

Ag Nanoparticles Supported on h-BN/BiPO4 Heterostructures as a Photocatalyst for the Degradation of Rhodamine B

Contact Info

Product

Resources

About

Ag Nanoparticles Supported on h-BN/BiPO₄ Heterostructures as a Photocatalyst for the Degradation of Rhodamine B