Nd2Sn2O7/Bi2Sn2O7/Ag3PO4 double Z-type heterojunction for antibiotic photodegradation under visible light irradiation: Mechanism, optimization and pathways

Composites of W18O49 Nanowires with g-C3N4/RGO Nanosheets for Broadband Light-Driven Photocatalytic Wastewater Purification

“…Similarly, as displayed in Figure B, in the measurement of O 2 •– in the methanol system, six signal peaks with different intensities appeared after 3 min of irradiation, which are characteristic peaks of O 2 •– . These results confirmed that though the effect of OH was relatively minor in the trapping experiment, both • OH and O 2 •– can be generated by CN/1.0 wt% RGO/45.0 wt% WO. , …”

“…•− can be generated by CN/1.0 wt% RGO/45.0 wt% WO. 35,36 To sum up, the strong responses of the CN/1.0 wt% RGO/ 45.0 wt% WO composite to UV, visible, and NIR spectra are attributed to the combined advantages of Z-scheme heterostructures formed between the ternary heterogeneous structure and the LSPR effect of W 18 O 49 under vis−NIR light. Compared to other reported photocatalysts, such as ternary composite carbonized cellulose nanofibrils/Ti 3 C 2 T x MXene/g-C 3 N 4 heterojunction (CMCN) 4 and binary WO 3 /g-C 3 N 4 , 5 the main advantage of this material lies in its ability to absorb and utilize the full spectrum with comparable efficiency, rather than being limited to only visible light.…”

Boosting Exciton Dissociation and Charge Transfer in Triazole-Based Covalent Organic Frameworks by Increasing the Donor Unit from One to Two for the Efficient Photocatalytic Elimination of Emerging Contaminants

“…The influence of the initial solution pH ranging from 3 to 11 on TC degradation by COF-DBT was also investigated (Figure b). Since the p K a values of TC are 3.3, 7.7, and 9.7 (Figure S18a and b), the major species of TC are the cation (H 3 TC + ), zwitterion (H 2 TC 0 ), and anions (HTC – /TC 2– ) at pH < 3.3, 3.3–7.7, and > 7.7, respectively . The isoelectric point of COF-DBT was at pH of 3.34 (Figure S18c).…”

“…Since the pK a values of TC are 3.3, 7.7, and 9.7 (Figure S18a and b), the major species of TC are the cation (H 3 TC + ), zwitterion (H 2 TC 0 ), and anions (HTC − /TC 2− ) at pH < 3.3, 3.3−7.7, and > 7.7, respectively. 53 The isoelectric point of COF-DBT was at pH of 3.34 (Figure S18c). Although the major species of TC and the surface charge of COF-DBT varied at different pH conditions, high degradation performance of TC by COF-DBT under visible- ) in high-salinity solution.…”

Efficiency of Ag3PO4/TiO2 as a heterogeneous catalyst under solar and visible light for humic acid removal from aqueous solution

“…The heterogeneous catalyst structure between Ag 3 PO 4 and TiO 2 can explain the increased photocatalytic activity of Ag 3 PO 4 /TiO 2 relative to ordinary TiO 2 . The photocatalytic efficiency of TiO 2 is improved by coating Ag 3 PO 4 on its surface, which enhances light absorption and enables electron-hole segregation according to their corresponding band orientations [ 57 , 58 ]. The border potentials of Ag 3 PO 4 's conduction band (CB) and valence band (VB) are +0.45 and + 2.9 eV, respectively, which are higher than TiO 2 (−0.5 and + 2.7 eV, respectively) [ [59] , [60] , [61] ].…”