A highly [001]-textured SbSe photocathode for efficient photoelectrochemical water reduction.

Anisotropic SbSe is an emerging earth-abundant photocathode for photoelectrochemical water splitting. However, controlling the growth of the SbSe film with optimal [001] crystallographic orientation is still the most challenging issue. Here, we successfully synthesized [001]-oriented SbSevia a reliable and facile method.

Superior Hydrogen Sensing Property of Porous NiO/SnO Nanofibers Synthesized via Carbonization.

In this paper, the porous NiO/SnO nanofibers were synthesized via the electrospinning method along with the carbonization process. The characterization results show that the pristine SnO-based nanofibers can form porous structure with different grain size by carbonization. The hydrogen gas-sensing investigations indicate that the NiO/SnO sensor exhibits more prominent sensing properties than those of pure SnO sensor devices.

Synergistic Effect of Bismuth and Indium Codoping for High Thermoelectric Performance of Melt Spinning SnTe Alloys.

In this work, a nonequilibrium melt spinning (MS) technology combined with hot pressing was adopted for rapid synthesizing of SnTe compounds in less than 1 h. The refined microstructure generated by MS significantly decreases the lattice thermal conductivity. Compared to the pristine SnTe sample prepared by traditional melting and long-term annealing, the melt-spun one reveals a 15% lower thermal conductivity of ∼6.

High-Temperature Structural and Thermoelectric Study of Argyrodite AgGeSe.

Argyrodites with a general chemical formula of ABX (A = Cu, Ag; B = Si, Ge, Sn; and X = S, Se, and Te) are known for the intimate interplay among mobile ions, electrons, and phonons, which yields rich material physics and materials chemistry phenomena. In particular, the coexistence of fast ionic conduction and promising thermoelectric performance in AgGeTe, AgSnSe, AgSiTe, AgSiSe, and CuGeSe at high temperatures ushered us to their chemical neighbor AgGeSe, whose high-temperature crystal structure and thermoelectric properties are not yet reported. In this work, we have employed a growth-from-the-melt technique followed by hot pressing to prepare polycrystalline AgGeSe samples, on which the crystal structure, micro-morphology, compositional analysis, UV-vis absorption, specific heat, speed of sound, and thermoelectric properties were characterized as a function of the Se-deficiency ratio and temperature.

Preparation and evaluation of a reversed-phase/hydrophilic interaction/ion-exchange mixed-mode chromatographic stationary phase functionalized with dopamine-based dendrimers.

In this work, a novel dendritic stationary phase was synthesized by the repeated grafting of 1,4-butanediol diglycidyl ether (BDDE) and dopamine (DA) on the surface of silica for performing mixed-mode high-performance liquid chromatography (MHPLC). Elemental analysis (EA), thermogravimetric analysis (TGA) and Fourier transform infrared spectrometry (FT-IR) showed the successful preparation of the dendritic stationary phase. The prepared stationary phase showed the retention mechanisms of reversed-phase liquid chromatography (RPLC), hydrophilic interaction chromatography (HILIC) and ion-exchange chromatography (IEC) under different mobile phase conditions.