Strong coupling effect at the interface of cobalt phosphate-carbon dots boost photocatalytic water splitting.

Hydrogen and oxygen produced by water splitting under solar energy are ideal future energy sources. At present, obtaining the efficient, stable and inexpensive photocatalyst for photocatalytic overall water splitting is still a huge challenge. Cobalt phosphate (CoPO, CoPi) possesses proper band positions for water splitting.

Study on highly enhanced photocatalytic tetracycline degradation of type Ⅱ AgI/CuBiO and Z-scheme AgBr/CuBiO heterojunction photocatalysts.

Removal of antibiotics from aqueous solutions by photocatalysis is an advanced technology for environmental remediation. Herein, we have fabricated a series of AgX (X = I, Br)/CuBiO composites through an in-situ precipitation method. The photocatalytic activity of the obtained photocatalysts was measured by the degradation of tetracycline (TC) under visible light irradiation (λ > 420 nm).

High-bright fluorescent carbon dot as versatile sensing platform.

The surface functionalization will introduce additional functional groups on carbon dots (CDs) surface and then enrich the properties of CDs. Here, we show the various surface functionalized CDs (-COOH, -OH, -SH, -NH, etc, named as NS-CDs) were synthesized with fascinating features, including high quantum efficiency (38.9%), long-term stability and good biocompatibility.

Pyridine derivative-induced fluorescence in multifunctional modified carbon dots and their application in thermometers.

We present a simple hydrothermal method to fabricate multifunctional modified carbon dots (with -COOH, -OH, -SH, and -NH groups, named NS-Cdots) using citric acid and l-cysteine as raw materials. The functional NS-Cdots exhibit high fluorescent quantum yield (38.9%), low cytotoxicity and good biocompatibility.

N,S co-doped carbon dots as a stable bio-imaging probe for detection of intracellular temperature and tetracycline.

Stable bioimaging with nanomaterials in living cells has been a great challenge and of great importance for understanding intracellular events and elucidating various biological phenomena. Herein, we demonstrate that N,S co-doped carbon dots (N,S-CDs) produced by one-pot reflux treatment of CNS with ethane diamine at a relatively low temperature (80 °C) exhibit a high fluorescence quantum yield of about 30.4%, favorable biocompatibility, low-toxicity, strong resistance to photobleaching and good stability.

A Pt-CoO-CD electrocatalyst with enhanced electrocatalytic performance and resistance to CO poisoning achieved by carbon dots and CoO for direct methanol fuel cells.

Highly efficient electrocatalysts remain huge challenges in direct methanol fuel cells (DMFCs). Here, a Pt-CoO-CDs/C composite was fabricated as an anode electrocatalyst with low Pt content (12 wt%) by using carbon dots (CDs) and CoO nanoparticles as building blocks. The Pt-CoO-CDs/C composite catalyst shows a significantly enhanced electrocatalytic activity (1393.

Concentrations dominated membrane permeability variation by fullerol nanoparticles on a single living HeLa cell.

The effects in HeLa cell membrane permeability caused by the fullerenols C(OH) with different concentrations were studied by scanning electrochemical microscopy (SECM). We demonstrate that C(OH) has very low cytotoxicity, although it can still have strong effects on the cell membrane permeability. In the presence of 1 × 10 mg mL (1 ppm) C(OH), the cell membrane permeability increases by 26% after 76 min, which is reversible.

Carbon quantum dot/CuSx nanocomposites towards highly efficient lubrication and metal wear repair.

Mechanical wear accounts for one third of present global energy consumption. However, it still lacks an efficient lubricant to simultaneously achieve a highly efficient lubrication and metal wear repair. Herein, we report that carbon quantum dots (CQDs)/CuSx nanocomposites show enhanced lubrication and metal wear surface repair abilities when used as additives.