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This research reports a rapid and scalable synthesis of MoSe2 Nanosheets (NSs), Inorganic Fullerene-Like (IF) MoSe2 and MoO3 quantum dots (QDs) with varying morphologies and crystal structures using Pulsed Laser Ablation in Liquid (PLAL) technique followed by microwave treatment of Bulk-MoSe2 powders. We show that using water as a solvent result in the formation of MoO3 QDs, single and few layered MoSe2 NSs and IF-MoSe2 structures from both Laser Modified (LM) and Laser Microwave Modified (LMM) MoSe2 samples. The presence of the predominant A1g mode in the Raman spectra of LM-MoSe2 and LMM-MoSe2 samples further showed the formation of single layer MoSe2 NS. Moreover, formation of small-sized MoSe2 heterolayers with an expanded interlayer spacing along the (002) planes for LMM samples which were subjected to microwave treatment for 30 min was demonstrated. Comparatively, for the samples subjected to microwave treatment for 60 min, most of the crystal orientations were vertical. The current study showed the controllable crystal orientation in MoSe2 samples by combined PLAL and microwave treatment. The two successive microwave steps led to change in the MoSe2 crystal orientation from horizontal to vertical. Selective oxygen incorporation induced by both PLAL and microwave treatment was also shown along the (100) and (002) planes for LM-MoSe2 and LMM-MoSe2, respectively. Understanding the selective oxygen incorporation in MoSe2 planes can shed light on the precise control of oxygenation in the crystal structures of 2D nanomaterials, synthesized heterostructures and nanocomposites.

Low impact development (LID) practices, such as bioretention and sand filter basins, are stormwater control measures designed to mitigate the adverse impacts of urbanization on stormwater. LID treatment performance is highly dependent on the media characteristics. The literature suggests that bioretention media often leach nutrients in the stormwater effluent. The objective of this study was to analyze the treatment performance of different sand and bioretention soil mixtures. Specifically, this investigation aimed to answer whether the use of limestone and recycled glass could improve the treatment performance of bioretention systems. Column experiments were designed to assess (1) the removal efficiencies of different sand and bioretention soil mixtures and (2) the impact of plant uptake on removal rates. Enhanced pollutant removal was observed for the custom blends with addition of limestone sand, indicating mean dissolved and total phosphorus removal of 44.5% and 32.6% respectively, while the conventional bioretention soil mixtures leached phosphorus. Moreover, improved treatment of dissolved and total copper was achieved with mean removal rates of 70.7% and 93.4%, respectively. The results suggest that the nutrient effluent concentration decreased with the addition of plants, with mean phosphorus removal of 72.4%, and mean nitrogen removal of 22% for the limestone blend.