Exceptional co-catalyst free photocatalytic activities of B and Fe co-doped SrTiO3 for CO2 conversion and H2 evolution

Tuning the Magnetism in Boron-Doped Strontium Titanate

“…As one of the most famous perovskite ceramic materials, strontium titanate (SrTiO 3 ) has attracted a great deal of attention and led to promising technological applications [ 17 , 18 , 19 , 20 ]. Great efforts have been made to modify the electronic structures of monodoped or codoped SrTiO 3 [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ], e.g., to enhance the visible light photocatalytic activity or for applications in water splitting [ 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 ]. Some researchers have been devoted to manipulating the magnetic properties by doping transition metals into SrTiO 3 both theoretically and experimentally [ 48 , 49 , 50 , 51 , 52 ].…”

“…However, relatively limited studies have been devoted to making SrTiO 3 a magnetic material by replacing oxygen with anion dopants. Experiments confirmed that B and Fe were effectively doped into the SrTiO 3 matrix, where B substituted O anions, while Fe substituted Ti cations [ 38 ]. In one study case, it was found by all-electron calculations with a 40-atom supercell that SrTiO 2.875 B 0.125 , SrTiO 2.875 C 0.125 , and SrTiO 2.875 N 0.125 exhibited magnetic moments of 3, 2 and 1 μ B , respectively [ 56 ].…”

Fabrication of an Fe‐Doped SrTiO3 Photocatalyst with Enhanced Dinitrogen Photofixation Performance

“…The O1s XPS spectra (Figure c) of the single SrTiO 3 can be deconvoluted into two symmetrical peaks with binding energy values at 530.8 and 529.1 eV, corresponding to the surface Ti‐OH species and crystal lattice oxygen of the cubic SrTiO 3 , respectively. As for those Fe x Sr 1‐ x TiO 3 products with x ≤ 0.10, the O1s peaks exhibit slight shift toward lower binding energy value, implying the changed chemical environment of O atoms after Fe doping.…”

“…[32] Nevertheless, those Sr2p binding energy peaks shift backward for the Fe x Sr 1-x TiO 3 product with x = 0.20, implying strong electron interactions existing between the Fe-doped SrTiO 3 and the newly formed α-Fe 2 O 3 since this shift toward higher binding energy infers that some electrons can transfer from Fe-doped SrTiO 3 to α-Fe 2 O 3 , which leads to a decreased electron density of Fe-doped SrTiO 3 , and then the enhanced binding energy value of Sr2p. [33,34] The O1s XPS spectra ( Figure 2c) of the single SrTiO 3 can be deconvoluted into two symmetrical peaks with binding energy values at 530.8 and 529.1 eV, corresponding to the surface Ti-OH species and crystal lattice oxygen of the cubic SrTiO 3 , [35] respectively. As for those Fe x Sr 1-x TiO 3 products with x ≤ 0.10, the O1s peaks exhibit slight shift toward lower binding energy value, implying the changed chemical environment of O atoms after Fe doping.…”

Synergistic effects in ultrafine amorphous InSxOy nanowires boost photocatalytic syngas production from CO2

“…20,21 Thus, considerable efforts have been focused on the development of photocatalysts with high catalytic activity to reduce the activation energy. [22][23][24][25] Relevant reports demonstrated that some semiconductors displayed high catalytic activity for sunlight-driven CO 2 reduction or H 2 evolution because of their intrinsic advantages of wide visiblelight absorption range, more effective charge-separationtransportation rate and abundant active sites. [26][27][28] Consequently, the development of high-performance photocatalysts with excellent activity has become one of the research hotspots.…”