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Stabilization of Fe−Pd Nanoparticles with Sodium Carboxymethyl Cellulose for Enhanced Transport and Dechlorination of Trichloroethylene in Soil and Groundwater
Abstract
This study reports a new strategy for stabilizing palladized iron (Fe−Pd) nanoparticles with sodium carboxymethyl cellulose (CMC) as a stabilizer. Compared to nonstabilized Fe−Pd particles, the CMC-stabilized nanoparticles displayed markedly improved stability against aggregation, chemical reactivity, and soil transport. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) analyses indicated that the CMC-stabilized nanoparticles with a diameter <17.2 nm are highly dispersed in water. Fourier transform infrared (FTIR) spectroscopy results suggested that CMC molecules were adsorbed to iron nanoparticles primarily through the carboxylate groups through monodentate complexation. In addition, −OH groups in CMC were also involved in interactions with iron particles. Batch dechlorination tests demonstrated that the CMC-stabilized nanoparticles degraded trichloroethene (TCE) 17 times faster than their nonstabilized counterparts based on the initial pseudo-first-order rate constant. Last, column tests showed that the stabilized nanoparticles can be readily transported in a loamy-sand soil and then eluted completely with three bed volumes of deionized (DI) water.
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Citations
Cited by
Nanoparticle Aggregation: Challenges to Understanding Transport and Reactivity in the Environment
Hotze, E. M., Phenrat, T., & Lowry, G. V. (2010) · Journal of Environmental Quality · doi:10.2134/jeq2009.0462 · Cited by 1,257
Nanocatalysts and other nanomaterials for water remediation from organic pollutants
Lu, F., & Astruc, D. (2020) · Coordination Chemistry Reviews · doi:10.1016/j.ccr.2020.213180 · Cited by 682
Li, Z., Wang, L., Meng, J., Liu, X., Xu, J., Wang, F., & Brookes, P. (2018) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2017.09.036 · Cited by 594
He, F., Zhao, D., & Paul, C. (2010) · Water Research · doi:10.1016/j.watres.2009.12.041 · Cited by 417
Self-citationSmuleac, V., Varma, R., Sikdar, S., & Bhattacharyya, D. (2011) · Journal of Membrane Science · doi:10.1016/j.memsci.2011.05.054 · Cited by 349
Metadata
- Authors
- He, F., Zhao, D., Liu, J., & Roberts, C. B.
- Venue
- Industrial & Engineering Chemistry Research
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-11-29
- Volume
- 46
- Issue
- 1
- Pages
- 29-34
- ISSN
- 0888-5885 (ISSN-L)
- 1520-5045
- OpenAlex
- W1976733452
- Cited by
- 663
- References
- 0
- FWCI
- 12.92
- Type
- journal article
- Language
- en
- Open access
- closed
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- He, F., Zhao, D., Liu, J., & Roberts, C. B. (2007). Stabilization of Fe−Pd Nanoparticles with Sodium Carboxymethyl Cellulose for Enhanced Transport and Dechlorination of Trichloroethylene in Soil and Groundwater. Industrial & Engineering Chemistry Research. https://doi.org/10.1021/ie0610896
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
