The Interfacial Processes Group of the Chemical Sciences and Engineering Division is seeking a Postdoctoral Appointee. The successful candidate will perform research on the structure and reactivity of mineral (i.e., silicate, carbonate, and oxide) surfaces during reaction with aqueous solutions. The specific research will focus on, but not limited to, evolution of interfacial structure and chemistry under perturbation, such as changes in ion sorption structure and speciation at charged mineral surfaces and dissolution and (re)precipitation of sparingly soluble minerals, which are closely relevant to various geochemical processes occurring during energy production, contaminant transport and remediation, and geological carbon sequestration and utilization. Under the guidance of a supervisor, the postdoctoral appointee will use a combination of synchrotron X-ray surface scattering and imaging approaches. The work also involves the interpretation of experimental data and the presentation of results at scientific conferences and in peer-reviewed literature. **Position Requirements** + Ph.D. degree level with 0 to 5 years of experience or equivalent in geochemistry, materials science, or a related field + Knowledge of interfacial science and crystallography + Considerable experience in synchrotron X-ray scattering experiments and the state-of-the-art microscopies (such as atomic force or electron microscopies) + Demonstrated knowledge of and experience in general analytical methods and practices + Experience in programming for data analysis + Excellent oral and written communication skills + Demonstrated creative and proactive approach towards scientific problem solving + Demonstrated ability to carry out independent and collaborative research + Ability to model Argonne’s Core Values: Impact, Safety, Respect, Integrity, and Teamwork **Job Family** Postdoctoral Family **Job Profile** Postdoctoral Appointee **Worker Type** Long-Term (Fixed Term) **Time Type** Full time _As an equal employment opportunity and affirmative action employer, and in accordance with our core values of impact, safety, respect, integrity and teamwork, Argonne National Laboratory is committed to a diverse and inclusive workplace that fosters collaborative scientific discovery and innovation. In support of this commitment, Argonne encourages minorities, women, veterans and individuals with disabilities to apply for employment. Argonne considers all qualified applicants for employment without regard to age, ancestry, citizenship status, color, disability, gender, gender identity, gender expression, genetic information, marital status, national origin, pregnancy, race, religion, sexual orientation, veteran status or any other characteristic protected by law._ _Argonne employees, and certain guest researchers and contractors, are subject to particular restrictions related to participation in Foreign Government Sponsored or Affiliated Activities, as defined and detailed in United States Department of Energy Order 486.1A. You will be asked to disclose any such participation in the application phase for review by Argonne's Legal Department._ _All Argonne offers of employment are contingent upon a background check that includes an assessment of criminal conviction history conducted on an individualized and case-by-case basis. Please be advised that Argonne positions require upon hire (or may require in the future) for the individual be to obtain a government access authorization that involves additional background check requirements. Failure to obtain or maintain such government access authorization could result in the withdrawal of a job offer or future termination of employment._