Cage-Shaped [P(W3o10)4]3- Nanoclusters Deposited Carbon Nitride to Construct a Dual-Functional Catalyst for Photocatalytic Mineralization Wastewater and Dye Detector
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Cage-Shaped [P(W3o10)4]3- Nanoclusters Deposited Carbon Nitride to Construct a Dual-Functional Catalyst for Photocatalytic Mineralization Wastewater and Dye Detector
Beschreibung:
In this work, [P(W 3 O 10 ) 4 ]-g-C 3 N 4 composite catalyst is prepared from phosphotungstic acid and thin-layer carbon nitride at high temperature, which can efficiently remove Rhodamine B (RhB) organic wastewater by photocatalysis. The results of UV-vis, TPC, PL and EIS tests show that the introduction of [P(W 3 O 10 ) 4 ] 3- increases the light absorption range of the g-C 3 N 4 and prolongs the recombination time of photogenerated electrons and holes. The degradation efficiency of g-C 3 N 4 and the [P(W 3 O 10 ) 4 ]-g-C 3 N 4 catalyst are compared and analyzed, and the corresponding active species (O 2 ·- ) is proposed. The new catalyst can decolor and mineralize the RhB solution in a short time, and its degradation rate and mineralization rate are 98.0% and 81.0%, respectively. Interestingly, [P(W 3 O 10 ) 4 ]-g-C 3 N 4 catalyst and RhB solution mixture can be used as a chili powder dye detector. Its special performance can be attributed to the dissociation of the composite catalyst under acid conditions, and the newly formed H 3 PW 12 O 40 combines with the RhB solution to change color. In short, a dual-function catalyst is synthesized to remove water pollution, and its advantages such as high efficiency, rapidity and strong practicability are worthy of attention