Hydrothermal fabrication and enhanced photocatalytic activity of hexagram shaped InOOH nanostructures with exposed {020} facets

The selective deposition of silver nanoparticles onto {1 0 1} facets of TiO 2 nanocrystals with co-exposed {0 0 1}/{1 0 1} facets, and their enhanced photocatalytic reduction of aqueous nitrate under simulated solar illumination

“…Since the pioneering report by Yang et al on the synthesis of anatase TiO 2 sheets with 47% exposed {0 0 1} facets in 2008 [7], crystal facet engineering is becoming an important approach to obtain photocatalysts with higher activity [8][9][10][11][12][13]. Recently, anatase TiO 2 nanocrystals with exposed facets were developed, which demonstrated enhanced photocatalytic performance than their counterparts in the micrometer size range due to their largely increased surface areas [14][15][16][17][18].…”

Solvothermal Synthesis of Bi2O2CO3Nanoplates for Efficient Photodegradation of RhB and Phenol under Simulated Solar Light Irradiation

“…And the formation of plate-like structures should be related to the slow reaction controlled by Bi-PEG200 complex. [29][30][31][32] With a small amount of SDBS (0.2 g), Bi 2 O 2 CO 3 nanoplates with irregular shapes were obtained ( Figure 5(c) and (d)). The corresponding XRD pattern (Figure 6(b)) also presents the relative high diffraction intensity of (004) and (006) facets, indicating a preferred orientation.…”

Superior photocatalytic activities of NiO octahedrons with loaded AgCl particles and charge separation between polar NiO {111} surfaces

“…The as-obtained products were characterized and analyzed using Moreover, it is found that the present NiO octahedrons show markedly higher intensity ratios of (111) to other diffraction peaks in comparison with those from standard pattern of the cubic NiO powder samples, demonstrating strong (111) preferred orientation. The texture coefficient of (111) plane is defined as [15]: Fig. 4.…”

“…To address this issue, organic polymers or inorganic ions have usually been employed for selective control of the growth rates of various crystal planes [2,5,7,12,15,18]. However, these capping agents adsorbed on the surfaces of semiconductor crystals generally reduce the catalytic activity as the result of decrease of the surface energy.…”

“…The reactivity of the photocatalyst is definitely affected by surface atomic arrangement and coordination [5−17]. There have been reports that {001} facets of anatase TiO 2 [7], BiVO 4 [8], BiOCl [9], WO 3 [10], β-Bi 2 O 3 [11], CdS [12] and Bi 2 WO 6 [13], Ag 3 PO 4 {110} [14] and InOOH {020} facets [15] as well as Cu 2 O {111} [16] and {522} facets [17] exhibited enhanced photocatalytic activity for degradation of toxic organic pollutants, splitting of water and reduction of CO 2 . However, the mechanism involved in the photocatalysis is not yet known.…”