Qing Wang

A two-phase high-entropy oxide with orange color and good light absorbance is introduced as a photocatalyst for hydrogen production.

Photocatalytic hydrogen generation on low-bandgap black ZrO₂ produced by high-pressure torsion.

Abstract NiFe 2 O 4 @CoFe 2 O 4 core–shell nanofibers were prepared by the co-electrospinning method. The prepared core–shell NiFe 2 O 4 @CoFe 2 O 4 nanofibers electrode has the specific capacitance of 480 Fg −1 at a current density of 1Ag −1 . After being cycled 2000 times at a current density of 5Ag −1 , the capacity of NiFe 2 O 4 @CoFe 2 O 4 core–shell nanofibers remained 87%. The electrochemical performance of the supercapacitor is improved by the synergistic action of the multi-metal and in

Titanium oxide (TiO2), with the anatase and rutile structures, has been widely studied for photovoltaic and solar cell applications, but its main drawback is large bandgap, which limits its activity to the UV light region. In this study, a high-pressure TiO2-II (columbite) phase, which has already been suggested to have low bandgap with downward-shifted Fermi level, is stabilized by the high-pressure torsion (HPT) method and its photovoltaic activity is examined. The TiO2-II formation by HPT pro

Abstract Phase transformation and optical properties of silica (silicon dioxide, SiO 2 ) quartz sand under high pressure/temperature has been of interest in geology and optical physics for many years. In this study, besides high pressure/temperature, high plastic strain is simultaneously applied to the quartz sand by high‐pressure torsion (HPT) processing. The material shows oxygen vacancy formation and transformation to (a) a denser nanocrystalline quartz phase, (b) a high‐temperature amorphous

Some problems of green chemistry and technology in flame retardant industry have been summarized. The preparation clue and method of high effect, low price, low toxious, low smoke, no environmental pollution, excellent thermal stability, green flame retardant were put forwarded. Mean while, the developing direction of green flame retardant was pointed out, and the correlative regulation and standard was improved emphatically.

The comb type caisson is a new structural type of breakwater As a kind of thick plate,the internal force of flange plate is complicated In this article,the element of thick plate is employed to imitate the mechanical property of flange plate According to the actual wave force in the model test,the structure analysis and steel design is carried out,thus providing a basis for the design of flange plate

Tin-based organic–inorganic halide perovskites have emerged as promising lead-free candidates for photovoltaic applications due to their favorable optoelectronic properties. However, their practical deployment is limited by intrinsic instability arising from the native defect formation. In this work, we systematically investigate the defect chemistry of MASnX3 (MA = CH3NH3+; X = I, Br, Cl) using a combination of density functional theory (DFT) calculations and experimental analysis. Formation en

The structural,elastic properties and absorption spectra of ZnO in wurtzite(B4),NaCl(B1) and CsCl(B2) structures are studied by plane wave pseudo-potential(PWP) method.The method is based on the density functional theory(DFT) within the local-density approximation(LDA) and generalized gradient approximation(GGA) approaches.The calculation gives out the respective structural phase transition pressures for two transitions(B4→B1,B1→B2).We investigate the behavior of the elastic constants C as funct

The impact process of the hammer and the rock in impact crusher has been simulated with the software MSC.Dytran. Through the analysis of stress distribution in hammer and square plate, the region which stress is greater and the maximum stress loaction was founded. The result of the simulation will provides the basis for the improvement of the crusher’s performance.

The article is to tell how the compiler of C compile and the design of output formatted function.