Low‐Temperature Synthesis of Bi_3.15Nd_0.85Ti₃O₁₂ Nanoplates by a Sol–Gel‐Hydrothermal Method

Abstract

Well‐crystallized pure Bi3.15Nd0.85Ti3O12 (BNdT) nanoplates with rim sizes of 150–200 nm and thickness of 20–30 nm have been successfully synthesized at a temperature as low as 160°C by a novel sol–gel‐hydrothermal route, which combined the conventional sol–gel process and the hydrothermal method. It is believed that the gel precursor and hydrothermal environment play an important role in the formation of BNdT nanoplates at a low temperature. The density of sol–gel‐hydrothermal–derived BNdT ceramics was higher than that of sol–gel‐derived ceramics.

Highly Catalytic Selectivity for Hydrogen Peroxide Generation from Oxygen Reduction on Nd-Doped Bi4Ti3O12Nanosheets

“…The alternating layers of [Bi 2 O 2 ] 2+ and [Bi 2 Ti 3 O 10 ] 2− grow along the c-axis, resulting in the slowest growth of the axial. 35 The EDS pattern (Figure S2a) and the elemental mapping images (Figure 1g) of the prepared BNTO nanosheets confirm the existence of Nd. The ratio of Bi, Nd, and Ti elements was estimated to be 3.07:0.82:3 based on the ICP-OES measurements, which is in accord with the feed ratio in Bi:Nd:Ti = 3.15:0.85:3.…”

“…Bi 3.15 Nd 0.85 Ti 3 O 12 (abbreviated as “BNTO” below) and its counterpart Bi 4 Ti 3 O 12 (abbreviated as “BTO” below) were synthesized via a modified sol–gel hydrothermal route which combines the advantages of the sol–gel method and hydrothermal method. The generation of uniform mesh structure via the sol–gel process can reduce the potential energy barriers and lower reaction temperature in the subsequent hydrothermal step . These samples were successfully prepared as testified by XRD characterization.…”

“…The generation of uniform mesh structure via the sol−gel process can reduce the potential energy barriers and lower reaction temperature in the subsequent hydrothermal step. 35 These samples were successfully prepared as testified by XRD characterization. In Figure 1a, the strong and sharp diffraction peaks reflect that the asprepared BTO and BNTO are well crystallized.…”

“…Bi 3.15 Nd 0.85 Ti 3 O 12 nanosheets with highly (010) exposed facets were synthesized via a modified sol–gel hydrothermal route under the catalysis of acetic acid . First, 3.15 mmol of Bi­(NO 3 ) 3 ·5H 2 O and 0.85 mmol of Nd­(NO 3 ) 3 ·6H 2 O were added and dissolved in acetic acid by stirring at room temperature to form solution A.…”

“…Bi 3.15 Nd 0.85 Ti 3 O 12 nanosheets with highly (010) exposed facets were synthesized via a modified sol−gel hydrothermal route under the catalysis of acetic acid. 35 Note that all the electrochemical data were given without any iR drop correction during the measurements. The ring potential was held at 1.2 V (vs RHE) to further oxidize the as-formed H 2 O 2 , and the collection efficiency (N) was calibrated to be 0.37 (the detailed calculation is shown in Figure S1).…”