Fabrication of Bi2Sn2O7@MIL-100(Fe) composite photocatalyst with enhanced superoxide-radical-dominated photocatalytic activity for ciprofloxacin degradation

Metal–organic framework‐based heterojunction photocatalysts for organic pollutant degradation: design, construction, and performances

“…Recently, it has been demonstrated that perovskites (as complex oxides) can be applied for the preparation of type-II heterojunctions with MOFs, and that the use of pyrochlore oxides (e.g., A 2 B 2 O 7 structures) may be a promising route for the construction of efficient composites for wastewater treatment. 156 The interest in pyrochlores is attributed to their compositional flexibility to manipulate the electron-hole mobility by introducing a wide range of elements into their structure. 16,157 On the other hand, the experiments where Bi 2 Sn 2 O 7 @MIL-100(Fe) heterojunction was used as a photocatalyst showed that the prepared composite is characterized by a low activity compared to known analogues.…”

“…16,157 On the other hand, the experiments where Bi 2 Sn 2 O 7 @MIL-100(Fe) heterojunction was used as a photocatalyst showed that the prepared composite is characterized by a low activity compared to known analogues. 156 One of the most appealing ways to enhance the degradation degree over MOF@pyrochlore heterostructures could be the introduction of defects into the pyrochlore structure. This approach has shown its viability for satisfying the need to increase the activity of complex oxides.…”

“…The interest in pyrochlores is attributed to their compositional flexibility to manipulate the electron–hole mobility by introducing a wide range of elements into their structure 16,157 . On the other hand, the experiments where Bi 2 Sn 2 O 7 @MIL‐100(Fe) heterojunction was used as a photocatalyst showed that the prepared composite is characterized by a low activity compared to known analogues 156 . One of the most appealing ways to enhance the degradation degree over MOF@pyrochlore heterostructures could be the introduction of defects into the pyrochlore structure.…”

Synthesis of Dual Z-Scheme CuBi2O4/Bi2Sn2O7/Sn3O4 Photocatalysts with Enhanced Photocatalytic Performance for the Degradation of Tetracycline under Visible Light Irradiation

“…Bi 2 Sn 2 O 7 (BSO) is a Bi-based pyrochlore structure photocatalyst with the advantages of a moderate band gap (2.7 eV), adjustable structure, low cost, easy doping modification, and non-toxicity [16][17][18][19][20]. However, the high recombination rate of photogenerated electrons and holes and poor quantum efficiency limit the improvement of its photocatalytic performance [21][22][23]. Among many methods for improving photocatalytic performance, the construction of heterojunction structures is one of the most effective methods [24][25][26].…”

Self-Assembly of Bi2Sn2O7/β-Bi2O3 S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

“…According to previous reports, the construction of nanocomposites can effectively solve the metastable problem of Bi 2 O 3 , so its application in practice is tested. Pyrochlore Bi 2 Sn 2 O 7 , which is an ordered fluorite-structure oxide, is a promising photocatalyst that can be easily modified and has an adjustable structure, suitable band structure (approximately 2.75 eV), and low cost. , Because of Bi 2 Sn 2 O 7 disadvantages such as fast recombination , and low quantum yield, , its application in environmental remediation is limited. Nevertheless, heterojunctions can overcome the shortcomings of these catalysts.…”