Enhanced Hevolution performance by carbonized SiC/g-CNheterojunction under visible-light illumination.

In this study, carbonized silicon carbide/graphitic carbon nitride ((SiC/C)/g-CN) composites were fabricated via a facile calcination method. The optimal SiC/C/g-CNcomposite shows an excellent visible-light photocatalytic activity for water splitting, with the highest hydrogen evolution amount being 200.2mol, which is four times higher than that of pure g-CNwhen triethanolamine and platinum (1.

Enhanced Visible-Light Photocatalytic Performance of SAPO-5-Based g-CN Composite for Rhodamine B (RhB) Degradation.

Novel visible-light responded aluminosilicophosphate-5 (SAPO-5)/g-CN composite has been easily constructed by thermal polymerization for the mixture of SAPO-5, NHCl, and dicyandiamide. The photocatalytic activity of SAPO-5/g-CN is evaluated by degrading RhB (30 mg/L) under visible light illumination (λ > 420 nm). The effects of SAPO-5 incorporation proportion and initial RhB concentration on the photocatalytic performance have been discussed in detail.

Synthesis of novel waste batteries-sawdust-based adsorbent via a two-stage activation method for Pb removal.

The novel waste alkaline battery-sawdust-based adsorbents (WABAs) are prepared by a two-stage activation method with the negative electrode materials as activator and different doping ratio of the positive electrode materials and pine sawdust as raw materials. The characteristics of the WABAs are analyzed by SEM, XRD, FT-IR, and specific surface determination (S). The Pb adsorption properties of the WABAs are studied by changing the pH of solution, contact time, initial concentration, and temperature.

Effects of Er spatial distribution on luminescence properties and temperature sensing of upconverting core-shell nanocrystals with high Er content.

In upconversion nanocrystals where Er acts as the activator, concentration quenching will easily occur when the content of Er is high (generally >5mol%), and the Er spatial distribution which is a key factor affecting the concentration quenching is an important issue that must be considered. Herein, we selected Yb:NaErF as a light-emitting layer and investigated its upconversion performance and temperature sensing behaviors in two kinds of core-shell nanoarchitectures. Yb and Er activators were distributed in a three-dimensional sphere and two-dimensional thin layer in Yb:NaErF@Yb/Nd:NaYF@NaGdF and NaGdF@Yb:NaErF@Yb/Nd:NaYF@NaGdF core-shell nanocrystals, respectively.