Publications by authors named "Wenqiang Lu"
Aqueous manganese-ion batteries (AMIBs) are becoming more noticeable because of their excellent theoretical capacity, outstanding safety profile, and cost-effectiveness. However, there aren't many studies on cathode materials appropriate for AMIBs, and the manganese-ion storage mechanisms within these materials have not been thoroughly investigated. Furthermore, the electrochemical performance of existing cathode materials remains suboptimal.
View Article and Find Full Text PDFBand Engineering of Mn-P Alloy Enables HER-suppressed Aqueous Manganese Ion Batteries.
Angew Chem Int Ed Engl
October 2024
Article Synopsis
- - Aqueous manganese ion batteries are promising for energy storage due to their low cost, high energy density, and eco-friendliness, but face challenges due to unstable manganese anodes in watery environments.
- - The major problem for manganese anodes is the severe hydrogen evolution reaction (HER), which is influenced by the high energy levels of manganese, leading to unclear mechanisms of side reactions.
- - Researchers developed Mn-P alloying anodes that lower HOMO energy levels, significantly enhancing their performance and longevity, resulting in better cycle durability and reduced capacity loss compared to traditional metallic manganese anodes.
Article Synopsis
- * The authors propose creating an Mn-enriched interfacial layer (Mn@MIL) on the manganese metal anode to mitigate these issues by acting as a barrier to reduce unwanted reactions and enhance Mn diffusion.
- * Tests in low-concentration electrolyte show that Mn||Mn symmetric cells and Mn||VO full cells with this new interfacial layer exhibit improved stability and reduced side reactions, indicating their potential for smart grid applications.
Lung adenocarcinoma (LUAD), a prevalent type of non-small cell lung cancer (NSCLC), was known for its diversity and intricate tumor microenvironment (TME). Comprehending the interaction among human immune-related genes (IRGs) and the TME is vital in the creation of accurate predictive models and specific treatments. We created a risk score based on IRGs and designed a nomogram to predict the prognosis of LUAD accurately.
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- Gliomas are aggressive brain tumors from glial cells, with higher rates of incidence in North America and Europe; they pose significant health risks.
- Genetic and environmental factors, like ionizing radiation, influence glioma risk, while epigenetics, especially DNA methylation, is crucial in understanding tumor development, particularly in IDH-mutant gliomas.
- Recent findings show accelerated epigenetic aging in gliomas, suggesting it could be a valuable tool for diagnosing, prognosticating, and improving treatment strategies in personalized medicine.
GaO is a kind of wide-band gap semiconductor, which has great potential in deep ultraviolet detection because of its high efficiency and fast response. Doping can improve the photoelectric properties of GaO materials. In this paper, In and Al elements alloyed GaO nanowires (InAl-GaO NWs) were successfully grown on p-GaN using a cost-effective chemical vapor deposition method and a vertical structure.
View Article and Find Full Text PDFSelf-powered ultraviolet photodetectors with bipolar photoresponse have great potential in the fields of ultraviolet optical communication, all-optical controlled artificial synapses, high-resolution ultraviolet imaging equipment, and multiband photoelectric detection. However, the current low optoelectronic performance limits the development of such polar switching devices. Here, we construct a self-powered ultraviolet photodetector based on GaN and In/Sn-doped GaO (IGTO) nanowires (NWs) pn junction structure.
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- Low-range light absorption and fast recombination of charge carriers have limited photocatalysis, but quantum dots (QDs) show promise in overcoming these issues due to their tailored photon properties and improved charge separation.
- Researchers developed nitrogen-doped TiO nanoparticles with stable oxygen vacancies (N-TiO-V) using a special low-temperature method, which prevents aggregation through electrostatic repulsion and allows them to utilize a broader solar spectrum effectively.
- The innovative N-TiO-V particles achieved a significantly higher photocatalytic hydrogen evolution rate (HER) compared to conventional TiO, with impressive rates under both UV and visible light, suggesting potential for sustainable energy applications.
Article Synopsis
- - The study explores a new graphene-based absorber that achieves over 98% perfect absorption across multiple frequencies in the Medium Wavelength Infra-Red (MWIR) range, outperforming traditional absorbers.
- - This absorber is structured with a gold bottom layer, a dielectric middle layer, and a graphene-patterned top layer, allowing for tunability by modifying graphene's Fermi energy.
- - Notably, the design showcases polarization insensitivity and high sensitivity (21.60 THz/RIU), making it promising for use in advanced multi-frequency sensors.
Article Synopsis
- Using electrolyte additives helps reduce unwanted reactions and dendrites in batteries, but current options struggle with controlling zinc diffusion and detecting decomposition of hydrogen oxide (HO).
- A new method involves adding [EMIm]OTf as a cosolvent in Zn(OTf) electrolyte, which helps reduce active HO levels and stabilize zinc deposition.
- This innovative approach leads to impressive performance metrics for zinc anodes, achieving a reversible cycle life of 3000 hours and 25,000 cycles for full cells, making it a promising solution for rechargeable zinc-ion batteries.
The interfacial structure holds great promise in suppressing dendrite growth and parasitic reactions of zinc metal in aqueous media. Current advancements prioritize novel component fabrication, yet the local crystal structure significantly impacts the interfacial properties. In addition, there is still a critical need for scalable synthesis methods for expediting the commercialization of aqueous zinc metal batteries (AZMBs).
View Article and Find Full Text PDFThe commercialization of lithium-sulfur (Li-S) batteries is challenging, owing to factors like the poor conductivity of S, the 'shuttle effect', and the slow reaction kinetics. To address these challenges, MoP quantum dots were decorated on hollow carbon spheres (MoPQDs/C) in this study and used as an efficient lithium polysulfides (LiPSs) adsorbents and catalysts. In this approach polysulfides are effectively trapped through strong chemisorption and physical adsorption while simultaneously facilitating LiPSs conversion by enhancing the reaction kinetics.
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- Lithium-sulfur (Li-S) batteries offer a high energy density alternative to traditional lithium-ion batteries, but face challenges like poor cycling life and safety issues due to low conductivity and the formation of lithium dendrites.
- Recent research highlights the use of quantum dots (QDs) as a potential solution to enhance the performance of Li-S batteries by improving reaction kinetics and minimizing the shuttling effect.
- The review summarizes the issues with sulfur conversion and lithium plating, explores the role of QDs in enhancing battery efficiency through various strategies, and discusses the future prospects and challenges associated with their application in Li-S batteries.
Composition-dependent activity of Mn-doping NiS nanosheets for boosting photocatalytic H evolution.
J Colloid Interface Sci
January 2023
Article Synopsis
- Two-dimensional transition metal disulfides like Mn-doped NiS (referred to as (NiMn)-S) are potential photocatalytic materials that can be enhanced through structural and compositional optimization.
- The (NiMn)-S, created via a low-cost solvothermal method, displays a unique pinecone-like shape with small nanosheets, improving electron separation, transfer, and conductivity compared to pure NiS and MnS.
- This material achieves a remarkable hydrogen evolution rate of 24.86 mmol g h under UV-visible light, significantly outperforming pure NiS and MnS, while also demonstrating strong repeatability and high quantum yield—indicating its potential for effective solar energy conversion into chemical energy.
Photoreduction of CO into CO, CH or hydrocarbons is attractive, due to environmental compatibility and economic feasibility. Optimizing the reaction engineering of CO reduction is an effective and general strategy that should be given special consideration. In this article, the photocatalytic CO reduction performances are originally investigated in a low vacuum in both dilute (10%) and pure CO.
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- - The study discusses the challenges of bonding incompatible polymers, such as polypropylene (PP) and polyamide6 (PA6), due to poor interfacial adhesion, and introduces a solution using an interlayer solder sheet (ISS) with maleic anhydride-functionalized polypropylene.
- - The ultrasonic welding process successfully achieved a welding strength of 22.3 MPa for the PP-PA6 combination, demonstrating significant strength retention compared to the original PP material.
- - Advanced analytical techniques like FTIR, XRD, and SEM confirmed the formation of a PP-PA6 copolymer that improved interfacial adhesion, allowing for enhanced compatibility and fusion bonding between the two previously incompatible materials.
Article Synopsis
- * This research presents a simpler, faster method using a self-catalyst approach for synthesizing β-GaO nanowire networks in just 15 minutes through Chemical Vapor Deposition (CVD) on an insulating substrate.
- * The resulting MSM photodetectors from these nanowires demonstrate a quick response time, indicating promising applications for future solar-blind photodetectors and advanced semiconductor nanoelectronics.
A novel and efficient copper-mediated [3 + 2] heteroannulation reaction of [60]fullerene with -hydroxybenzimidoyl cyanides has been developed for the synthesis of fullerooxazoles. A possible reaction mechanism involving unique C-CN and N-OH bond cleavages and subsequent C-OH bond formation for -hydroxybenzimidoyl cyanides is proposed to explain the generation of fullerooxazoles. In addition, the formed fullerooxazoles can be further electrochemically transformed into amidated 1,2-hydrofullerenes.
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- - The study reveals a new Diels-Alder reaction involving [60]fullerene and electron-withdrawing ferrocenes, leading to the formation of specific single isomers of cycloadducts.
- - Mechanistic analysis shows that electron-deficient ferrocenes produce cyclopentadienes in the presence of oxidants and acids, which then engage in Diels-Alder reactions.
- - A Grignard reagent is employed in a Michael addition to convert the Diels-Alder adducts into more stable derivatives of fullerene.
Article Synopsis
- Dietary polyphenols, like those found in yellow wine, can help prevent heart damage caused by doxorubicin (DOX) in rats by interacting with gut microbiota.
- In the study, researchers analyzed the gut and metabolites of rats to observe how these polyphenols improved heart and mitochondrial function while reducing inflammation and cell death.
- The findings suggest that a healthy gut microbiome is crucial for the protective effects of yellow wine polyphenols against heart toxicity, highlighting the potential for using dietary polyphenols as a treatment for cardiovascular issues.
Article Synopsis
- A new method has been developed that uses copper to promote a reaction between [60]fullerene (C60) and two identical α-oxocarboxylic acids, resulting in the creation of unique epoxy-bridged C60-fused lactones.
- This process also allows for the transformation of these lactones into rare compounds like epoxy-bridged C60-fused hemiacetals and bicyclic-fused 1,2,3,4-adducts.
- The structures of these new compounds have been confirmed using single-crystal X-ray crystallography, and possible reaction mechanisms for the synthesis have been suggested.