| Solar energy is clean and inexhaustible.So it is an environmentally friendly and green way of using solar energy to solve the problems of energy shortage and environmental pollution,in which photocatalytic hydrogen production and degradation are two hotspots in recent studies.In this work,polymer hydrogels were used as substrate materials to immobilize semiconductor particles on the 3D network of the hydrogels.Thus,the photocatalysts were prepared,a series of characterizations were carried out,and the photocatalytic degradation organic pollutant or hydrogen production test were performed.（1）The poly（2-acrylamido-2-methyl-1-propanesulfonic acid）（PAMPS）hydrogel was synthesized by using oxidation-reduction initiator system,and then Ag3PO4particles were introduced onto the PAMPS by in-situ loading to prepare PAMPS-Ag3PO4hydrogel.The PAMPS-Ag3PO4hydrogel was used for photocatalytic degradation of Rhodamine B（Rh B）.It was found that the highest degradation rate of Rh B was 98.5%under visible light,and the degradation rate constant was 3.406×10-2min-1,indicating that PAMPS as the substrate material can evidently improve the degradation performance of Ag3PO4.（2）Firstly,the reduced graphene oxide/CdS（G/C）complex was synthesized and then loaded into the matrices of polyacrylamide hydrogel,then the photocatalyst of polyacrylamide-reduced graphene oxide/CdS（P-G/C）hydrogel was prepared.The photocatalytic hydrogen production performance of the P-G/C catalysts was studied.It was found that the highest hydrogen production rate was 0.839 mmol·h-1·g-1,which was better than those of pure CdS and G/C.（3）An inverse emulsion polymerization method was used to prepare polyacrylamide（PAM）microgels.These microgels were used to immobilize CdS to form PAM-CdS and they were then tested as photocatalysts for hydrogen production under visible light irradiation.It was found that the highest hydrogen production rate was up to 5.21 mmol·h-1·g-1,which is over 65 times higher than that of bare CdS. |
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