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A Study of Intermediate for Synthesis of Cs 0.3 WO 3 with Near-Infrared Photothermal Response

Author

Listed:
  • Yue Zhang

    (School of Materials Science and Engineering, Beihang University, Beijing 100191, China)

  • Ruixing Li

    (School of Materials Science and Engineering, Beihang University, Beijing 100191, China)

Abstract

Nanoscale tungsten bronze can convert near-infrared light into thermal energy. For a chemical synthesis, intermediate products and processes are potentially positive or negative to an end product. In this study, (NH 4 ) 2 SO 4 was added into the hydrothermal system of WO 3 , CsCl, CH 3 CH 2 CHO, and NH 3 ·H 2 O to increase the Cs/W ratio in solution. An intermediate, Cs 1.1 W 1.65 O 5.5 , was isolated. Subsequently, it was confirmed via a kinetics experiment conducted for different times. The results of the NH 3 ·H 2 O and NH 4 COOCH 3 system indicate there are two influence factors that influence the formation of Cs 1.1 W 1.65 O 5.5 : the leaching out of W and imine reactions. A low leaching out rate induces a high Cs/W ratio and low-concentration W in solution, leading to the formation of Cs 1.1 W 1.65 O 5.5 . The imine reaction decreasing CH 3 CH 2 CHO restrains the reduction in Cs 1.1 W 1.65 O 5.5 . The increase in CH 3 CH 2 COO − with the reduction reaction results in both the micron-size sticks and nano-size equiaxial particles in powder.

Suggested Citation

  • Yue Zhang & Ruixing Li, 2022. "A Study of Intermediate for Synthesis of Cs 0.3 WO 3 with Near-Infrared Photothermal Response," Energies, MDPI, vol. 15(22), pages 1-14, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:22:p:8542-:d:973288
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