Sustainability

Directly map atomic structure & charge distribution simultaneously via STEM-DPC (differential phase contrast imaging)

 

2
Zachman, M. J., Fung, et al. Nat Commun 13 (2022).

Au particle is negatively charged and its surrounding STO is positively charged. 

 

Selected publications:

  1. Chao, H.-Y., Venkatraman, K., Moniri, S., Jiang, Y., Tang, X., Dai, S., Gao, W., Miao, J. & Chi, M. In Situ and Emerging Transmission Electron Microscopy for Catalysis Research, Chemical Reviews (2023), DOI: acs.chemrev.2c00880.  [Link]
  2. Ni, H., Wu, Z., Wu, X., Smith, J. G., Zachman, M. J., Zuo, J., Ju, L., Zhang, G. and Chi, M. Quantifying Atomically Dispersed Catalysts Using Deep Learning Assisted Microscopy, Nano Lett, 23, 16 (2023), DOI: 10.1021/acs.nanolett.3c01892.  [Link]
  3. Zachman, M. J., Fung, V., Polo-Garzon, F., Cao, S. H., Moon, J., Huang, Z. N., Jiang, D. E., Wu, Z. L. & Chi, M. F. Measuring and directing charge transfer in heterogenous catalysts. Nat Commun 13 (2022), DOI: 10.1038/s41467-022-30923-2. [Link]
  4. T. Blum, J. Graves, M. J. Zachman, F. Polo-Garzon, Z. L. Wu, R. Kannan, X. Q. Pan, and M. F. Chi, Machine Learning Method Reveals Hidden Strong Metal-Support Interaction in Microscopy Datasets,  Small Methods 5 (5) (2021), DOI: 10.1002/smtd.202170020. [Link]
  5. Zachman, M. J.; Hachtel, J. A.; Idrobo, J. C., and Chi, M.*,"Emerging electron microscopy techniques for probing functional interfaces in energy materials," Angewandte Chemie 132 1400 (2020), DOI: 10.1002/anie.201902993. [Link]
  6. Wang, X. et al.,"Efficient electrically powered CO2-to-ethanol via suppression of deoxygenation," Nature Energy 5 478 (2020), DOI: 10.1038/s41560-020-0607-8. [Link]
  7. Gao, W. P.; Hou, Y. S.; Hood, Z. D.; Wang, X.; Xia, Y. N.; Pan, X. Q., and Chi, M. F.*,"Direct in situ Observation and Analysis of the Formation of Palladium Nanocrystals with High-Index Facets," Nano Lett 18 7004 (2018), DOI: 10.1021/acs.nanolett.8b02953. [Link]
  8. Gao, W. P.; Hood, Z. D., and Chi, M. F.*,"Interfaces in Heterogeneous Catalysts: Advancing Mechanistic Understanding through Atomic-Scale Measurements," Accounts Chem Res 50 787 (2017), DOI: 10.1021/acs.accounts.6b00596. [Link]
  9. Zhang, L. et al.,"Platinum-based nanocages with subnanometer-thick walls and well-defined, controllable facets," Science 349 412 (2015), DOI: 10.1126/science.aab080. [Link]
  10. Chi, M. F. * et al.,"Surface faceting and elemental diffusion behaviour at atomic scale for alloy nanoparticles during in situ annealing," Nat. Commun. 6 (2015), DOI: 10.1038/ncomms9925. [Link]