Showing papers by "Bizhou Lin published in 2013"
TL;DR: In this article, Nitrogen-deficient graphitic carbon nitride (g-C3N4−x) was synthesized by a hydrothermal treatment using ammonium thiosulfate as an oxidant.
Abstract: Nitrogen-deficient graphitic carbon nitride (g-C3N4−x) was synthesized by a hydrothermal treatment using ammonium thiosulfate as an oxidant. The as-prepared photocatalyst was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption–desorption, Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), elemental analysis (EA), electron paramagnetic resonance (EPR), UV-vis diffuse reflectance spectroscopy (UV-vis DRS) and photoluminescence (PL) spectroscopy. The visible-light-driven photocurrent measurement was performed by several on–off cycles of intermittent irradiation. The photocatalytic activity of catalysts was evaluated by splitting water under visible-light irradiation (λ > 420 nm). Results demonstrated that the photoactivity of g-C3N4−x was enhanced greatly by the deficiency of the terminal amino species on the catalysts. The average H2 evolution rate on g-C3N4−x was 31.6 μmol h−1, which was ca. 3 times higher than that on pristine g-C3N4. It was revealed that the unique nitrogen-deficient structure of g-C3N4−x played an important role in broadened visible-light absorption and efficient electron–hole separation, mainly accounting for the improved photocatalytic activity.
314 citations
TL;DR: In this article, the NH3-heat-treatment of TiO2 resulted in not only nitrogen doping but also creation of oxygen vacancies with optical absorption in visible-light region, and the postcalcination achieved several beneficial effects including dramatic removal of surface amino species, a rapid decrease in surface Ti3+ species, and a low recombination rate of photogenerated carriers on the co-dopedTiO2.
73 citations
TL;DR: In this article, a photoexcitation model of the semiconductor-semiconductor pillared photocatalyst was proposed based on the results of XPS and UV-vis.
33 citations
TL;DR: In this article, a mesoporous cobalt-intercalated layered tetratitanates have been synthesized by assembling tetraitanate nanosheets with cobalt ions via an exfoliation-restacking route.
31 citations
TL;DR: In this paper, N-doped and oxygen-deficient TiO2 photocatalysts were fabricated by a two-step calcination method using dicyandiamide and commercial TiO 2 as starting materials.
22 citations
TL;DR: In this paper, a cobalt-intercalated layered tantalotung states with cobalt ions was assembled by exfoliation-restacking via an exfoliated-restacked route.
10 citations
TL;DR: In this paper, a photoelectrocatalytic degradation of Rhodamine B with the TaWO6 nanosheet electrodes demonstrated that both the oxygen anionic radicals and the dye cationic radical are essential to mineralize the dye under visible-light-driven photocatalytic conditions.
9 citations
TL;DR: Heterostructured SnO2-pillared Co-doped tantalotungstate nanohybrid was assembled by H1+3xTa1−xCoxWO6 nanosheets and SnO 2 nanoparticles in an alternate stacking fashion by an exfoliation-restacking route.
5 citations
TL;DR: In this paper, nitrogen-doped Ti1-xZrxO2 solid solutions have been synthesized by a multi-step sol-gel process followed by hydrothermal treatment in ammonia solution.
4 citations