@article{gibson_luo_shenderova_koscheev_brenner_2012, title={Electrostatically mediated adsorption by nanodiamond and nanocarbon particles}, volume={14}, ISSN={["1572-896X"]}, DOI={10.1007/s11051-011-0700-9}, number={3}, journal={JOURNAL OF NANOPARTICLE RESEARCH}, author={Gibson, Natalie M. and Luo, Tzy-Jiun Mark and Shenderova, Olga and Koscheev, Alexey P. and Brenner, Donald W.}, year={2012}, month={Mar} }
 @article{gibson_luo_brenner_shenderova_2011, title={Immobilization of mycotoxins on modified nanodiamond substrates}, volume={6}, ISSN={["1559-4106"]}, DOI={10.1116/1.3672489}, abstractNote={The effectiveness of modified nanodiamonds (NDs) for the adsorption of mycotoxins, aflatoxin B1 (AfB1) and ochratoxin A (OTA), are investigated in this paper. Binding and release mechanisms of the mycotoxins were addressed using an assortment of NDs modified by different surface treatments, including carboxylation, hydrogenation and hydroxylation, followed by isolating NDs of different sizes. Results indicate that AfB1 adsorption on NDs is directly related to aggregate size, whereas OTA adsorption is primarily centered upon electrostatic interactions that depend on the types of surface functional groups on the ND. Findings show that modified NDs with small aggregation sizes (∼40 nm) have greater adsorption capacities for AfB1 than yeast cells walls and untreated NDs from various vendors, but comparable to activated charcoal. In OTA studies, positively charged NDs outperformed clay minerals, which are well-known and efficient sorbents for mycotoxins. Furthermore, ND adsorption capacities can be preserved in a wide range of pH.}, number={4}, journal={BIOINTERPHASES}, author={Gibson, N. M. and Luo, T. J. M. and Brenner, D. W. and Shenderova, O.}, year={2011}, month={Dec}, pages={210–217} }
 @article{gibson_luo_shenderova_choi_fitzgerald_brenner_2010, title={Fluorescent dye adsorption on nanocarbon substrates through electrostatic interactions}, volume={19}, ISSN={["1879-0062"]}, DOI={10.1016/j.diamond.2009.10.005}, abstractNote={Nanodiamonds (NDs) with modified surface functional groups and surface characteristics are an attractive model to understand adsorption mechanisms of molecules on substrates. The research described in this paper illustrates the binding mechanisms of fluorescent dyes to ND surfaces as these interactions are extremely useful in many biomedical ND applications. A thorough study of binding and release mechanisms was completed using an assortment of carbon based nanoparticles, including NDs, onion-like carbon, and single-wall nanohorns. Surface charge interactions were studied in combination with surface areas, configurations, and modifications in order to determine which is responsible for the largest adsorption capacity and strongest binding. Adsorption studies were carried out using UV–Vis measurements followed by maximum binding capacity determination using the Langmuir isotherm and related transform equations. Langmuir and transform calculations further reveal the specific surface area covered by adsorbents for select nanocarbon materials. In addition, cyclic voltammetry measurements confirm that dye adsorbed onto NDs exhibits equal electrochemical properties as in its unbound state.}, number={2-3}, journal={DIAMOND AND RELATED MATERIALS}, author={Gibson, N. M. and Luo, T. J. M. and Shenderova, O. and Choi, Y. J. and Fitzgerald, Z. and Brenner, D. W.}, year={2010}, pages={234–237} }
 @article{gibson_shenderova_luo_moseenkov_bondar_puzyr_purtov_fitzgerald_brenner_2009, title={Colloidal stability of modified nanodiamond particles}, volume={18}, ISSN={["1879-0062"]}, DOI={10.1016/j.diamond.2008.10.049}, abstractNote={Colloidal stability is one of the critical factors for the use of nanodiamonds as potential enterosorbents. Although nanodiamonds are believed to be a promising enterosorbent, colloidal stability in hydrosols of raw polydispersed nanodiamonds produced by detonation is typically low. Surface modification and fractionation significantly improves colloidal stability of nanodiamond suspensions within the physiological pH range. The modification of nanodiamonds can be completed either by physical means, i.e., plasma treatments, or by chemical methods. In the current paper an analysis of the colloidal stability of detonation nanodiamonds hydrosols, which have undergone different surface modifications, is presented based on zeta potential measurements and titration experiments.}, number={4}, journal={DIAMOND AND RELATED MATERIALS}, author={Gibson, N. and Shenderova, O. and Luo, T. J. M. and Moseenkov, S. and Bondar, V. and Puzyr, A. and Purtov, K. and Fitzgerald, Z. and Brenner, D. W.}, year={2009}, month={Apr}, pages={620–626} }