Submitted by Anne Bentley / Lewis & Clark College on Sun, 03/28/2021 - 14:17
My Notes

This literature discussion highlights recent research from the Weiss group in which electrostatically assembled aggregates of CuInS2 / ZnS quantum dots and trimethylamino-functionalized tetraphenylporphyrin molecules were used to selectively reduce carbon dioxide to carbon monoxide.

This LO is part of a special VIPEr collection honoring the 2021 ACS National Award recipients in the field of inorganic chemistry. Emily Weiss was the recipient of the ACS Award in Colloid Chemistry; DIC Nanoscience Subdivision Chair-Elect for her outstanding contributions to colloidal photocatalysis and to chemical design of the interfaces of nanoscale colloids with their environments.

Attachment Size
Weiss_2021_0.docx 51.13 KB
Learning Goals

Students will be able to:

- identify an oxidation / reduction reaction and the elements being oxidized and reduced.

- distinguish between hydrophobic and hydrophilic nanoparticle capping agents

- use Lewis structures to determine the charge on a ligand in a metal-ligand complex

Implementation Notes

I developed this learning object to use in my nanomaterials chemistry course in the spring of 2021. Students worked in small groups during class to answer the questions. They were generally sucessful, although those who had not had the inorganic course were less familiar with metal-ligand binding.  This learning object only briefly introduces the article; there are many more opportunities to ask questions about topics such as turnover number, selectivity, the hole scavenger TEOA, and other experimental details.

Time Required
30 minutes
Evaluation Methods

I did not ask students to hand in their work, but I did circulate among the groups to try to get a sense of how well they were understanding the concepts. 

Evaluation Results

After some brief mixups regarding redox reactions, they generally seemed to understand the electron pathway outlined in the article.

Creative Commons License
Attribution, Non-Commercial, Share Alike CC BY-NC-SA