Differences in bacterial communities between the source water (SWW and SWS), pond water with <i>E</i>. <i>prolifera</i> (CPEW and CPES), and pond water in which <i>E</i>. <i>prolifera</i>-free (CPW and CPS).

<p>a, Phylum taxonomic level; b, Order taxonomic level.</p

Detrended correspondence analysis (DCA) of bacterial community between the source of water (SWW and SWS), pond water with <i>E</i>. <i>prolifera</i> (CPEW and CPES), and pond water in which <i>E</i>. <i>prolifera</i> -free (CPW and CPS).

<p>Detrended correspondence analysis (DCA) of bacterial community between the source of water (SWW and SWS), pond water with <i>E</i>. <i>prolifera</i> (CPEW and CPES), and pond water in which <i>E</i>. <i>prolifera</i> -free (CPW and CPS).</p

Heatmap showing the differences in the distributions of the most abundant bacterial species (> 1%) among the source water (SWW and SWS), pond water with <i>E</i>. <i>prolifera</i> (CPEW and CPES), and pond water in which <i>E</i>. <i>prolifera</i> -free (CPW and CPS).

<p>The relative percentage of each bacterial species (<i>y</i>-axis) in each sample (<i>x</i>-axis clustering) is shown. Colored bars represent relative percentages.</p

Assessment of the effect of <i>Enteromorpha prolifera</i> on bacterial community structures in aquaculture environment

<div><p>In recent years, <i>Enteromorpha prolifera</i> blooms had serious impacts on costal environments and fisheries in China. Nevertheless, the effects of <i>E</i>. <i>prolifera</i> on microbial ecology remain unknown. In this study, for the first time, an Illumina sequencing analysis was used to investigate bacterial communities in source water, aquaculture ponds with <i>E</i>. <i>prolifera</i>, and an aquaculture pond in which <i>E</i>. <i>prolifera</i> -free. Principal coordinate and phylogenic analyses revealed obvious differences among the bacterial communities in the pond water with and without <i>E</i>. <i>prolifera</i>. Abundant bacterial taxa in the <i>E</i>. <i>prolifera</i>-containing pond were generally absent from the pond without <i>E</i>. <i>prolifera</i>. Interestingly, pond water with <i>E</i>. <i>prolifera</i> was dominated by <i>Actinomycetales</i> (> 50%), as well as by anaerobic bacteria in the underlying sediment (<i>Desulfobacterales</i> and <i>Desulfuromonadales</i> (> 20%). Pond water in which <i>E</i>. <i>prolifera</i>-free was dominated by <i>Rhodobacterales</i> (58.19%), as well as aerobic and facultative anaerobic bacteria in the sediment. In addition, the ecological functions of other dominant bacteria, such as <i>Candidatus</i> Aquiluna, <i>Microcella</i> spp., and <i>Marivita</i> spp., should be studied in depth. Overall, massive growth of <i>E</i>. <i>prolifera</i> will have serious effects on bacterial communities, and, thus, it will have an important impact on the environment. The novel findings in this study will be valuable for understanding green tides.</p></div

Samples collected from pond water with (a) and without (b) <i>E</i>. <i>prolifera</i>.

<p>Samples collected from pond water with (a) and without (b) <i>E</i>. <i>prolifera</i>.</p

Heatmap showing the phylogenetic distribution between the source water (SWW and SWS), pond water with <i>E</i>. <i>prolifera</i> (CPEW and CPES), and pond water in which <i>E</i>. <i>prolifera</i> -free (CPW and CPS).

<p>The relative percentage of each bacterial genus (<i>y</i>-axis) in each sample (<i>x</i>-axis clustering) is shown. Colored bars represent relative percentages.</p

Size-Controlled Synthesis of Bifunctional Magnetic and Ultraviolet Optical Rock-Salt MnS Nanocube Superlattices

Wide-band-gap rock-salt (RS) MnS nanocubes were synthesized by the one-pot solvent thermal approach. The edge length of the nanocubes can be easily controlled by prolonging the reaction time (or aging time). We systematically explored the formation of RS-MnS nanocubes and found that the present synthetic method is virtually a combination of oriented aggregation and intraparticle ripening processes. Furthermore, these RS-MnS nanocubes could spontaneously assemble into ordered superlattices via the natural cooling process. The optical and magnetic properties were investigated using measured by UV–vis absorption, photoluminescence spectra, and a magnetometer. The obtained RS-MnS nanocubes exhibit good ultraviolet optical properties depending on the size of the samples. The magnetic measurements suggest that RS-MnS nanocubes consist of an antiferromagnetic core and a ferromagnetic shell below the blocking temperatures. Furthermore, the hysteresis measurements indicate these RS-MnS nanocubes have large coercive fields (e.g., 1265 Oe for 40 nm nanocubes), which is attributed to the size and self-assembly of the samples

Exploration of Ca_0.5Ti₂(PO₄)₃@carbon Nanocomposite as the High-Rate Negative Electrode for Na-Ion Batteries

Exploring suitable electrode materials with high specific capacity and high-rate capability is a challenging goal for the development of Na-ion batteries. Here, we report a NASI­CON-structured compound, Ca_0.5­Ti₂­(PO₄)₃, with respect to its synthesis and electrochemical properties. The electrode is found to enable fast Na⁺ ion diffusion owing to the rich crystallographic vacancies, affording a reversible capacity of 264 mA h g^–1 between 3.0 and 0.01 V. In particular, the hybrid Ca_0.5­Ti₂­(PO₄)₃­@­carbon exhibits remarkable rate performance with a discharge capacity of nearly 45 mA h g^–1 at a current density of 20 A g^–1, which is attributed to the pseudocapacitive effect

Recyclable and Ultrafast Fabrication of Zinc Oxide Interface Layer Enabling Highly Reversible Dendrite-Free Zn Anode

The surface coating is effective in suppressing Zn dendrite and side reactions, while the existing processing methods employ complex procedures and expensive equipment. Here, we develop an I2-assisted processing method to in situ fabricate the ZnO interface layer on the Zn anode (denoted as IAZO). This strategy features the sustainability that the raw materials, I2, could be reused with a recovery ratio of 67.25% and rapid processing time that only takes 5 min. The IAZO anode achieves an extraordinary cycle life of over 3100 h and a high depth of discharge of 52%, much better than the original Zn anode (less than 220 h and 1.7%). Density functional theory calculations and COMSOL simulation reveal that the IAZO anode has a high binding energy with Zn2+, which contributes to the uniform distribution of the electric field and Zn2+ flux

NASICON-Structured NaTi₂(PO₄)₃@C Nanocomposite as the Low Operation-Voltage Anode Material for High-Performance Sodium-Ion Batteries

NASICON-type structured NaTi₂(PO₄)₃ (NTP) has attracted wide attention as a promising anode material for sodium-ion batteries (SIBs), whereas it still suffer from poor rate capability and cycle stability due to the low electronic conductivity. Herein, the architecture, NTP nanoparticles embedded in the mesoporous carbon matrix, is designed and realized by a facile sol–gel method. Different than the commonly employed potentials of 1.5–3.0 V, the Na⁺ storage performance is examined at low operation voltages between 0.01 and 3.0 V. The electrode demonstrates an improved capacity of 208 mAh g^–1, one of the highest capacities in the state-of-the-art titanium-based anode materials. Besides the high working plateau at 2.1 V, another one is observed at approximately 0.4 V for the first time due to further reduction of Ti³⁺ to Ti²⁺. Remarkably, the anode exhibits superior rate capability, whose capacity and corresponding capacity retention reach 56 mAh g^–1 and 68%, respectively, over 10000 cycles under the high current density of 20 C rate (4 A g^–1). Worthy of note is that the electrode shows negligible capacity loss as the current densities increase from 50 to 100 C, which enables NTP@C nanocomposite as the prospective anode of SIBs with ultrahigh power density