Lang Liu

Bio: Lang Liu is an academic researcher from Xinjiang University. The author has contributed to research in topics: Pyrazolone & Crystal structure. The author has an hindex of 25, co-authored 134 publications receiving 2223 citations. Previous affiliations of Lang Liu include Chinese Ministry of Education.

Rapid synthesis of ZnO nano-rods by one-step, room-temperature, solid-state reaction and their gas-sensing properties

Abstract: ZnO nano-rods are prepared by one-step solid-state reaction of zinc acetate dihydrate, sodium hydroxide and cetyltrimethylammonium bromide (CTAB) at room temperature. The samples are characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The gas-sensing properties of the prepared material have been investigated. The results indicate that the as-prepared ZnO nano-rods are uniform with diameters of 10?30?nm and lengths of about 150?250?nm. The relatively high sensor signal and stability of sensors made from ZnO nano-rods demonstrate the potential for developing a new class of sensitive sensors.

Simple synthesis of CuFe2O4 nanoparticles as gas-sensing materials

Abstract: Semiconductive nanometer-size material CuFe2O4 was synthesized by a low-heating solid-state reaction of inorganic reagents of Cu(CH3COO)2·H2O, Fe(NO3)3·9H2O and NaOH. The process was a convenient, environment friendly, inexpensive and efficient preparation method for the CuFe2O4 nanomaterial. X-ray diffraction (XRD) was used to confirm the material structure and scanning electron microscopy (SEM) to depict the crystallite microstructure. Conductance responses of the nanocrystalline CuFe2O4 thick film were measured by exposing the film to reducing gases of ammonia (NH3), acetone (CH3COCH3), hydrogen (H2) and ethanol gas (C2H5OH). It was found that the sensor exhibited various sensing responses to these gases at different operating temperatures. Furthermore, the sensor exhibited a fast response and a good recovery.

Recent progress in heavy atom-free organic compounds showing unexpected intersystem crossing (ISC) ability

Abstract: In this review, recent progress in heavy atom-free triplet photosensitizers was summarized. The general approaches include attaining S1/Tn states sharing similar energy levels or proper molecular geometry to satisfy the angular momentum reservation in intersystem crossing (ISC). ISC via the higher singlet excited state (Sn, n > 1) → Tm (m > 1), which is a rarely reported phenomenon, was also discussed. The ISC of some Bodipy dimers was proposed to be via the 'doubly excited state', but recent studies show that the ISC mechanism of these Bodipy dimers is charge separation/recombination. These new findings in the study of triplet photosensitizers are useful for photovoltaics, photodynamic therapy and photocatalysis, as well as in fundamental photochemistry studies.

Coal-Based Hierarchical Porous Carbon Synthesized with a Soluble Salt Self-Assembly-Assisted Method for High Performance Supercapacitors and Li-Ion Batteries

Abstract: Coal-based multiscale porous carbon materials (CPCs) have been successfully fabricated through a friendly method with NaCl, Na2CO3, and Na2SiO3 as structural templates, instead of alkali activation

Aggregation-Induced Emission: Together We Shine, United We Soar!

Abstract: Ju Mei,†,‡,∥ Nelson L. C. Leung,†,‡,∥ Ryan T. K. Kwok,†,‡ Jacky W. Y. Lam,†,‡ and Ben Zhong Tang*,†,‡,§ †HKUST-Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China ‡Department of Chemistry, HKUST Jockey Club Institute for Advanced Study, Institute of Molecular Functional Materials, Division of Biomedical Engineering, State Key Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China Guangdong Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China