Anatase TiO₂ with Co‐exposed (001) and (101) Surface‐Based Photocatalytic Materials for Energy Conversion and Environmental Purification

Abstract

Anatase TiO2 with co‐exposed (001) and (101) surfaces [(001)‐(101)‐TiO2], as a semiconductor photocatalyst in crystal plane control engineering, has become a research hotspot in environmental purification and energy conversion due to its strong physicochemical stability, non‐toxic and harmless, and low production cost. This review briefly introduces the basic principles and influencing factors of [(001)‐(101)‐TiO2]. On this basis, the effect of heterostructures formed by different materials and modification methods on its photocatalytic activity are elaborated in detail. Mainly formed heterostructures mentioned in this review include oxygen vacancy/Ti3+‐[(001)‐(101)‐TiO2] heterostructures, noble metal‐[(001)‐(101)‐TiO2] heterostructures, metal sulfide‐[(001)‐(101)‐TiO2] heterostructures, metal oxide‐[(001)‐(101)‐TiO2] heterostructures and carbon material‐[(001)‐(101)‐TiO2] heterostructures. The light absorption range and charge separation mechanism of (001)‐(101)‐TiO2 after modification are discussed. Moreover, the application of photocatalytic redox reaction in simulating photosynthesis to prepare new energy (hydrogen evolution and CO2 reduction), environmental purification and sterilization is introduced in detail. Finally, various measures of designing (001)‐(101)‐TiO2 nanostructures for further applications in energy production and environmental remediation are discussed.

Weakened Crystalline SnNb2O6 for Enhanced Performance in Photocatalytic H2 Production and CO2 Reduction

“…To solve resource constraint and environmental degradation, the semiconductor has been widely used because of their excellent performance in hydrogen (H 2 ) production from water splitting, [1][2][3] CO 2 photocatalytic reduction, [4][5][6] and so forth. A variety of photocatalysts, such as TiO 2 , [7,8] g-C 3 N 4 , [9,10] BiOCl, [11] metallic sulfide [12,13] and others, [14][15][16][17] have been adopted in recent years. For these traditional catalytic materials, excellent performance can be achieved by adjusting the electron band gap, microstructure, hybridization feature, etc., to enhance the photoresponse capacity, electron transport speed, and reactive active site.…”

Construction of a double heterojunction between graphite carbon nitride and anatase TiO2 with co-exposed (101) and (001) faces for enhanced photocatalytic degradation

“…[12][13][14][15] Among many photocatalysts, TiO 2 is believed to be a eligible candidate for forming a heterojunction with g-C 3 N 4 due to their matching band-edge position. 16 The (101) and (001) planes of TiO 2 reportedly have strong reduction and oxidation properties, respectively. One of the issues regarding the difference in properties between the two (101) and (001) planes of TiO 2 has been discussed by researchers as reported in the literature.…”

Carbon Nanostructures Decorated with Titania: Morphological Control and Applications

“…The morphology and crystallinity of the titania phase are important parameters in the determination of the resulting photo-electronic properties of the final material [15]. However, only a few studies compare the photo-activity of the three phases of titania (rutile, brookite, and anatase; Figure 1) [16], while the majority of works focus on the generally best-performing anatase phase [17]. Titania can be produced by several methods, with sol-gel [18], hydrothermal [19], and solvothermal [20] processes being the most popular, and in some cases also microwave-assisted methods [21].…”