Regulation of charge transfer in ZnO/Bi2Sn2O7 heterojunction for enhanced photocatalytic performance towards antibiotic degradation

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

“…Specifically, β-Bi 2 O 3 and Bi 2 Sn 2 O 7 both exhibited excellent visible-light absorption with absorption edges at approximately 615 and 480 nm, respectively. 82 , 83 BSO/BO-0.4 exhibited enhanced visible-light absorption compared with original β-Bi 2 O 3 and Bi 2 Sn 2 O 7 , and the introduction of Bi 2 Sn 2 O 7 with a narrow bandgap broadened the absorption range of β-Bi 2 O 3 , which is conducive to enhancing the photocatalytic performance. The bandgap ( E g ) values ( Figure 7 b) of β-Bi 2 O 3 and Bi 2 Sn 2 O 7 were determined using eq 2 ( 84 ) and were 2.26 and 2.97 eV, respectively.…”

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].…”

Building internal electric fields in porous ionic polymers for fast photocatalytic degradation of tetracycline hydrochloride

“…22 However, most reported photocatalysts are binary conjunctions of two bulk semiconductors, where only the limited interface makes contributions for enhancing the migration of photoexcitons. [23][24][25] Alternatively, constructions of the IEF within one photocatalyst may steer the migration and separation of photoexcitons more efficiently, therefore, rational design the transfer path at the molecular level are highly anticipated. [26][27][28] Porous organic polymers (POPs), a burgeoning class of porous materials, which are synthesized from organic structural units by covalent bonds, featured with simple and diverse synthetic methods, high surface areas, and excellent chemical stability have attracted considerable attentions in photocatalysis for water treatment.…”

“…22 However, most reported photocatalysts are binary conjunctions of two bulk semiconductors, where only the limited interface makes contributions for enhancing the migration of photo-excitons. 23–25 Alternatively, constructions of the IEF within one photocatalyst may steer the migration and separation of photo-excitons more efficiently, therefore, rational design the transfer path at the molecular level are highly anticipated. 26–28…”