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1. Current Members


Research Associates/Pos-Docs

Dr. Dejun Chen, Assistant Professor 

BS. 2006, PhD, 2012 in Chemistry, Xiamen University, China

Dejun was an exchange PhD student from Professor Shi-Gang Sun's lab at Xiamen University in the Group from October 2009 to April 2012, that was partially supported by a two-year CSC (Chinese Scholar Council) scholarship. He started his current post-doc position in August 2012 working on in situ spectroelectrochemistry (SEIRAS and SERS) and Pt-based electrocatalysts for electrooxidation of small organic molecules and oxygen reduction. He started his appointment of teaching assistant professor in the Environmental Metrology & Policy Graduate Program in Fall 2018.



Undergraduate Students

Biochemistry major, Col' 2021.

Carter is a San Francisco native. While deeply interested in biochemistry he also is a proud Grill master with the Georgetown University Grilling Society. Aside from grilling multiple days a week, he also vlogs under the username @cartmilk on instagram.  The 2018 summer he had a cell bio internship with Prellis Biologics, a 3D printing startup. He joined the Tong Lab in Spring 2018. This semester, Carter is excited to focus on designing PtNiCu catalyst and is ready to get into electrochemistry!

Nicholas Young    
Chemistry major, Col' 2021

Nick is from Freeland, Pennsylvania, a small rural town about 100 miles northwest of Philadelphia. He has been conducting research in the Tong lab since the spring of his freshman year, focusing on the synthesis of tellurium ligand protected gold nanoparticles. In his spare time, he enjoys staying active and working as an EMT.











Biochemistry Major/Pre-med, Col’ 2023


Lauren joined the Tong lab in Fall 2020 as an incoming freshman, and she works under Rongfeng studying atomically precise gold nanoclusters bound by organoselenate ligands. Outside of the lab, Lauren is an EMT and a tutor in the Georgetown University Writing Center. She is also an active member of the Georgetown

University Signs Club, whose mission is to spread literacy and awareness of American sign language and deaf culture, and of the Georgetown University Contemporary Choir. She is originally from Valley Forge, Pennsylvania, but now lives with her family to a seaside town in Maine called Castine, where she enjoys outdoor adventures with her three dogs.



Abby Kirk

Biochemistry Major/Pre-med, Col' 2023.

In addition to majoring in biochemistry, Abby is planning to minor in Justice and Peace Studies. She joined TongLab in spring 2020 and works with Rongfeng and Nick on learning atomically precise gold clusters research. She’s from Amherst, NH but went to boarding school in Groton, MA. Outside of lab, she is an EMT, an operations assistant at a Massachusetts community hospital, an advocate for Hoyas for Choice, and a “Women in STEM” mentor for an independent student-run tutoring business. She also loves running, cooking and baking with friends, soapy TV shows, and her dog, Clover.

Graduate Students

Safia Jilani
B.S. in chemistry from Dominican University, River Forest, IL, 2013.

Safia joined the group in Fall 2014, She has won an Espencheid Fellowship for Summer 2015 because she passed her Phase I exams on her first attempt. Her research focuses on developing electrocatalysts that can have a better ability in breaking the C-C bond in ethanol. She has many probing questions, which is good. Moreover, Safia brings a lot of smiles and giggles to the lab.


Rongfeng Zheng
BS (2012) and MS (2015) in chemistry from Jilin University, China.

Rongfeng joined the group in Fall 2015. Before coming to Georgetown, Rongfeng has already co-authored three papers, one of which appeared in Langmuir and entitled "Syntheses and characterization of nearly monodispersed, size-tunable silver nanoparticles over a wide range of 7-200nm by tannic acid reduction". Her research project is on synthesis and characterization of organo-chalcognate stabilized metal nanoparticles.





BS (2017) in chemistry from St. Joseph's University, Philadelphia.

Kaitlyn joined the lab in Fall 2017. I received my B.S. Her current project focuses on the potential oscillations that occur during the Formica acid electro-oxidation using palladium.