People
Wenxian Gou
Wenxian Gou
Ph. D.
Email: gouwx@smail.nju.edu.cn
EDUCATION
◆ 09/2014 – now
Ph.D. Candidate in Geochemistry, School of Earth Sciences and Engineering, Nanjing University, China
Advisor: Profs. Wei Li and Weiqiang Li
◆09/2010－07/2014
B.S. in Geology, Awarded with honors (Rank: 2st/188)
College of Earth Sciences, Chengdu University of Technology, China
RESEARCH INTERESTS
Sorption at environmental interface, stable Zn isotope analysis, EXAFS
RESEARCH EXPERIENCE
◆ 05/2016-now
Ph.D. Candidate, School of Earth Sciences and Engineering, Nanjing University, China
Project: Zn isotope fractionation during sorption onto γ-alumina
Summary: The isotopic fractionation of Zn during sorption onto γ-Alumina at various pH and initial Zn concentrations was investigated by batch experiments and advanced Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy. A systematic enrichment in heavy Zn isotopes on theγ-alumina relative to aqueous solution is observed, with Δ66/64Znsorbed-solution ranging from 0.50 ± 0.16‰ at low pH (e.g., pH 6) and low concentration (e.g., 0.2 mM ) to 0.10 ± 0.02‰ at high pH (e.g., pH 7.5) and high concentration (e.g., 0.8 mM). The higher fractionation level is related to the formation of tetrahedrally coordinated Zn and the lower fractionation lever is related to the formation of octahedrally coordinated Zn
◆ 07/2015-03/2016
Ph.D. Candidate, School of Earth Sciences and Engineering, Nanjing University, China
Project: Investigate competitive sorption of Co(II) Ni(II) and Zn(II) on γ-Alumina
Summary: In this study, the competitive sorption of Co(II) Ni(II) and Zn(II), common toxic heavy metals, was investigated with various pH. Results showed that Ni(II) or Zn(II) would reduce the sorption amount of Co(II) in multi-solute systems at pH 6.0. This is because Co(II), Ni(II), and Zn(II) would form inner-sphere surface complexes inacidic conditions and would compete for the surface reactive sites. At pH 7.5, there is no mutual competitive effect was observed. EXAFS analysis reveals formation of layered double hydrated (LDH) precipitates was the dominant sorption mechanism which does not rely on surface reactive sites. This finding would shed light on the risk assessment and remediation strategy for Ni/Co/Zn pollution.
◆ 11/2014-09/2015
Ph.D. Candidate, School of Earth Sciences and Engineering, Nanjing University, China
Project: Synthesis of Multi-Metal Layered Double Hydroxides
Summary: This study employed successfully a simple and mild co-precipitation method at neutral pH (7.5) to obtain multimetallic LDHs containing Co(II), Ni(II) or Zn(II) in brucite lattice. EXAFS, PDF, and XRD methodologies were adopted to obtain their structure, whereas TEM was used to determine the morphology.
◆ 07/2015-03/2016
Research Assistant, College of Earth Sciences, Chengdu University of Technology, China
Project: Study of the Geological Characteristics and Ore Composition of Mianhuakeng Uranium Deposit in Guangdong Province
Advisor: Yuanfu Xiao
Summary: Mianhuakeng uranium ore field is located in the center of the southern Zhuguangshan granite. Silicification, hematitization, sericitization, chloritization, kaolinitization of the wall-rock are srong and wide spread. The local faults determine the distribution, shape and size. The ore composition is simple in which there is only pitchblende going optimal industrial grade.
TECHNIACAL SKILLS
Analytical:
Extended X-ray Absorption Fine Structure (EXAFS),
Multi-Collector Inductively-Coupled Plasma Mass Spectrometry (MC-ICP-MS),
Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES),
X-Ray Diffraction (XRD),
Software:
Jade, Minteq, SigmaPlot, Adobe Illustrator (AI), Microsoft Office
HONORS AND AWARDS
First-class academic scholarship, Nanjing University (2018)
National scholarship, Nanjing University (2018)
University-level outstanding student cadres, Nanjing University (2018)
College-level excellent Party Member, Nanjing University (2018)
Second-class academic scholarship,Nanjing University (2017)
First-class academic scholarship,Nanjing University (2016)
Second-class academic scholarship,Nanjing University (2015)
National Encouragement scholarship, Chengdu University of Technology (2012)
Excellent Student, Chengdu University of Technology (2011)
PUBLICATION
2. Wenxian Gou, Matthew Siebecker, Zimeng Wang, Wei Li*, 2018. Competitive Sorption of Ni and Zn at the Aluminum Oxide/Water Interface: An XAFS Study. Geochemical Transactions 19: 9
3. Wenxian Gou, Junfeng Ji, Wei Li*, 2017. An EXAFS investigation on the mechanism of competitive sorption between Co(II) and Ni(II) at γ-alumina/solution interface. Acta Geochimica 36, 462-464
PUBLICATION AT CONFERENCES
1. Wenxian Gou, Chao Ren, Ji Junfeng, Wei Li. 2017. An EXAFS Investigation on the Mechanism of Competitive Sorption of Co(II), Ni(II) and Zn(II) at γ-Alumina/Solution Interface. The 16th Annual Academic Conference of Chinese Society for Mineralogy, Petrology and Geochemistry, Xian, China, April 18-21 (Poster have been accepted)
2. Wenxian Gou, Chao Ren, Wei Li. 2016. Co(II), Ni(II) and Zn(II)at γ-Alumina/Solution Interface: an EXAFS study. The 2016 National Conference on Mineral Science and Engineering, Beijing, China, October 22-23. (Poster)
3. Wenxian Gou, Wei Li. 2015. Competitive Sorption of Co(II), Ni(II) and Zn(II) at γ-Alumina/Solution Interface: an EXAFS Study. The 8th National Conference on Environmental Chemistry, Guangzhou, China, November 5-8. (Oral presentation)
4. Wenxian Gou, Wei Li. 2015. Synthesis and Characterization of Multi-metal LDHs at the First International Workshop of Earth Surface Geochemistry and Environmental Implication, Nanjing, China, November 16. (Poster)
