Strategies to extend near-infrared light harvest of polymer carbon nitride photocatalysts

Semiconductor vacancy engineering has remained a prominent growing field over the past several decades. Modulating electronic structures and surface properties has sparked considerable interest in vacancy-modified photocatalysts. Given vacancy-mediated photocatalysis has only been developed for a relatively short period, significant advance has been made in enhancing light absorption over the full solar spectrum, the efficiency of charge transfer and separation and surface reaction kinetics. This review seeks to highlight the recent impressive progress in vacancy-enhanced photocatalysis. First, we summarize the crafting and characterization of vacancies after defining the classification of vacancies. Second, current developments of semiconductor vacancy engineering in several photocatalysts (i.e., metal oxides, hydroxides, sulfides, Sillen phase related bismuth-containing materials and g-C3N4) are emphasized, focusing on the mechanism of vacancies in regulating the photocatalytic performance. Finally, prospects and challenges regarding vacancy engineering of photocatalytic materials are concluded.

Vacancy engineering in nanostructured semiconductors for enhancing photocatalysis

Sunlight-driven photodegradation of oxytetracycline antibiotic by BiVO4 photocatalyst

Organic pollutants are highly toxic, accumulative, and difficult to degrade or eliminate. As a low-cost, high-efficiency and energy-saving environmental purification technology, photocatalytic technology has shown great advantages in solving increasingly serious environmental pollution problems. The development of efficient and durable photocatalysts for the degradation of organic pollutants is the key to the extensive application of photocatalysis technology. Polyoxometalates (POMs) are a kind of discrete metal-oxide clusters with unique photo/electric properties which have shown promising applications in photocatalytic degradation. This review summarizes the recent advances in the design and synthesis of POM-based photocatalysts, as well as their application in the degradation of organic dyes, pesticides and other pollutants. In-depth perspective views are also proposed in this review.

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Application of polyoxometalates in photocatalytic degradation of organic pollutants

A critical review on graphitic carbon nitride (g-C3N4)-based composites for environmental remediation

Dual defects and build-in electric field mediated direct Z-scheme W18O49/g-C3N4−x heterojunction for photocatalytic NO removal and organic pollutant degradation

The formation of direct Z-scheme Ag/BiOCl/AgIO3 heterojunction and its degradation stability

Defects and internal electric fields synergistically optimized g-C3N4-x/BiOCl/WO2.92 heterojunction for photocatalytic NO deep oxidation.

Double build-in electric fields mediated double Z-scheme semiconductor-nonmetal plasma heterojunction for dark-full-spectrum-driven environmental clean

Bixin Zhang

Papers

Dual defects and build-in electric field mediated direct Z-scheme W18O49/g-C3N4−x heterojunction for photocatalytic NO removal and organic pollutant degradation

The formation of direct Z-scheme Ag/BiOCl/AgIO3 heterojunction and its degradation stability

Defects and internal electric fields synergistically optimized g-C3N4-x/BiOCl/WO2.92 heterojunction for photocatalytic NO deep oxidation.

Double build-in electric fields mediated double Z-scheme semiconductor-nonmetal plasma heterojunction for dark-full-spectrum-driven environmental clean

Construction of Ag/NaBiO3 with dual active sites for photocatalytic NO deep oxidation and long-lasting organic pollutants degradation in the dark.