Heterogeneous photo-Fenton oxidation is a promising solution to solve the problem of environmental pollution. Due to the low efficiency of the Fe 2 O 3 photo-Fenton catalyst, we loaded Fe 2 O 3 on the catalyst carrier of attapulgite (ATP) to obtain more active sites. Oxygen vacancies were introduced on the surface of the catalyst to improve the separation efficiency of photogenerated charges. The oxygen-vacancy-rich e-Fe 2 O 3 /SiO 2 /ATP Fenton-like photocatalyst was successfully synthesized by simple strategies. The oxygen vacancies were successfully introduced to the surface of the e-Fe 2 O 3 /SiO 2 /ATP catalyst by a solvothermal method, and verified by XPS, Raman and EPR spectra. The e-Fe 2 O 3 /SiO 2 /ATP Fenton-like photocatalyst shows excellent photocatalytic degradation activity of MB and RhB. 96 % of RhB was degraded by e-Fe 2 O 3 /SiO 2 /ATP with light in 60 min, and 95 % of MB was degraded by e-Fe 2 O 3 /SiO 2 /ATP with light in 60 min. Therefore introducing surface oxygen vacancies is an effective strategy to future improve the catalytic activity of photo-Fenton like catalysts.

Construction of a high-efficiency and low-cost cocatalyst on g-C3N4 is of essential significance for realizing efficient photocatalytic hydrogen production. However, balancing the active center and mass transport is still a...

Photocatalytic water splitting to obtain hydrogen energy can transform low-density solar to high density, new and clean energy in a clean way, which is one of the ideal ways to solve the energy crisis and environmental pollution. In this paper, The Co x P/hollow porous C 3 N 4 composite photocatalytic material was synthesized by simple methods. The photocatalytic hydrogen production rate of Co x P/hollow porous C 3 N 4 reaches 1602 μmol g À 1 h À 1 , which is 151 times of that of pure C 3 N 4 . The reasons for the high photocatalytic H 2 evolution activity of Co x P/hollow porous C 3 N 4 could be summarized as follows: (1) the hollow and porous structure of C 3 N 4 shows higher light capture efficiency, larger specific surface area and more surface active sites. (2) metalloid Co x P loaded forms the Schottky contact with C 3 N 4 , which improves the photogenerated charges separation efficiency of C 3 N 4 , prolongs the photogenerated charges lifetime and improves the photocatalytic H 2 evolution activity of C 3 N 4 . (3) The higher conductivity of metalloid Co x P and the lower overpotential of hydrogen production are other reasons for the higher activity of photocatalytic hydrogen production of Co x P/hollow porous C 3 N 4 . This work provides an important role for the design of efficient, stable, and efficient construction of photocatalysts for solar energy conversion.