Publications by authors named "Chengyin Wang"

The poor ionic conductivity and sluggish interfacial kinetics of LiV(PO) (LVP) severely limit its practical use for lithium extraction from brines. To overcome these limitations, we developed a robust amorphous LiPO coating for LVP. This coating enhances ionic conductivity, accelerates interfacial kinetics, and improves structural stability.

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The g-CN/TiO intercalation composite material was successfully synthesized and used as the adsorbent in the hemoperfusion device. Then, the cytotoxicity and hemolysis rate were studied. The experimental results proved that g-CN/TiO was non-toxic to cells and would not cause hemolysis.

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In this work, we developed a synergistic Nb doping and SiO substitution strategy to precisely tune the local coordination environment in NaV(PO) (NVP), achieving simultaneous structural optimization and enhanced low-temperature performance. The optimized cathode demonstrates exceptional cycling stability (96% capacity retention after 3000 cycles at 10 A g and -20 °C) and remarkable fast-charging capability (60% state of charge in 14.1 minutes at -20 °C).

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Antimony (Sb), which has a suitable working potential and high theoretical specific capacity, is considered an appropriate anode material for sodium-ion batteries. However, the large volume expansion of Sb causes electrode collapse and capacity decay. In this study, a functionally sulfur-doped TiCT confined Sb composite (Sb/S-TiCT) was designed and prepared.

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This study reports the synthesis of silver single-atom-loaded thiophene-conjugated carbon nitride (Ag@T─CN), a material with high carrier concentration and efficient carrier separation. Under visible light, Ag@T─CN catalyzes hydrogen peroxide (HO) production and benzyl alcohol oxidation to benzaldehyde, achieving production rates of 4729.82 µmol·g·h for HO and 19.

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Selective asymmetric oxidation of glycerol (GLY) to hydroxypyruvic acid (HPA) offers an attractive approach for chiral drug synthesis, but this process is highly challenging. Here we develop a photocatalytic method to achieve heterogeneous selective photooxidation of GLY to HPA over rubidium (Rb) and iridium (Ir) catalytic pairs decorated on a poly(heptazine imide) framework. The Rb sites effectively adsorb GLY molecules through the terminal -OH groups, thus inhibiting their oxidation during photoreaction, while the Ir sites enhance the oxygen reduction reaction and the in situ generated surficial oxygen-reduction radicals on Ir can protect the reactive C-centred radical intermediates produced during photooxidation.

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The oxygen reduction reaction (ORR) has been recognized well as an essential step to trigger the electrochemiluminescence (ECL) of the luminol/O system but suffers from sluggish reaction kinetics. Herein, ECL of the luminol/O system without involving ORR is reported by using a 4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl (4-amino-TEMPO) grafted glassy carbon electrode (4-amino-TEMPO/GCE). This electrode exhibits high catalytic activity toward the oxidation of luminol, though it is covered with an organic film.

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Background: Upon cerebral ischemia/reperfusion injury (CIRI), the brain tissue experiences excessive inflammatory responses, which fuel the activation of immune cells, thereby intensifying cellular damage and inflammatory reactions. Naoqing formula (NQ), a traditional Chinese medicinal compound formulated with musk as the primary component, has been extensively utilized in China for the clinical treatment of ischaemic stroke (IS).

Purpose: The precise pharmacological mechanism underlying NQ's efficacy in managing IS remains elusive.

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Ferroptosis is a form of regulating cell death, and iron accumulation in the brain after acute ischemic stroke (AIS) is associated with the triggering of iron metabolism. Nuclear factor erythroid 2-related factor 2 (Nrf2), one of the most critical antioxidant transcription factors in cells, is closely associated with ferroptosis and oxidative stress.In the present study, we explore the intrinsic mechanisms by which Nrf2 exerts neuroprotective effects against AIS-induced ferroptosis.

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Nitrogen-doped carbons (NCs) have demonstrated notable advantages for application in capacitive deionization (CDI). However, the potential roles of different nitrogen configurations in the CDI process, especially how the neglected oxygen doping synergistically works, remain unclear. In this work, we systematically addressed these critical issues and revealed the significant role of trace oxygen doping in enhancing the desalination performance of NC electrodes.

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Biomimetic calcification is a micro-crystallization process that mimics the natural biomineralization process, where biomacromolecules regulate the formation of inorganic minerals. In this study, it is presented that a protein-assisted biomimetic calcification method for the in situ synthesis of nitrogen-doped metal-organic framework (MOF) materials. A series of unique core-shell structures are created by utilizing proteins as templates and guiding agents in the nucleation step, creating ideal conditions for shell growth.

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Backgrounds: Ferroptosis is a form of regulated cell death. The accumulation of iron in the brain is linked to trigger ferroptosis after an ischaemic stroke (IS). Naoqing formula (NQ) is a traditional Chinese medicine metabolites with the clinical function of activating blood circulation, which is applied to treat IS clinically in China.

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Ever since lithium-ion batteries (LIBs) were successfully commercialized, aromatic compounds have attended every turning point in optimizing electrolytes, separators, and even electrode materials. However, the contribution of aromatic compounds has always been neglected compared to other advanced materials. At the same time, designing next-generation LIBs with higher flexibility, solid-state electrolytes, high energy density, and better Coulombic Efficiency (CE) has imposed stricter duties on aromatic components.

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Several cation graphite carbon nitrides (g-C3N4-(CH2)n-ImI+) were synthesized by chemically attaching imidazolium appended alkane chains with different lengths ( = 2, 4, 8, 12 and 16) to g-C3N4. The introduction of a cation segment potentially improved the interaction between the carbon material and Gram negative (MDR-. ) and Gram positive () bacteria as characterized by potential measurement.

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Article Synopsis
  • Lithium metal batteries (LMBs) are highly sought after for their exceptional capacity and low electrode potential, but issues like unstable solid electrolyte interphase (SEI) layers and lithium dendrite growth hinder their commercial use.
  • A new method using gamma-cyclodextrin (γ-CD) as an electrolyte additive improves lithium deposition by enhancing ionic conductivity and reducing harmful solvent effects.
  • This innovation significantly boosts battery stability, maintaining high efficiency over extensive cycles, demonstrating remarkable performance even at high current densities.
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Prussian blue analogues (PBAs), representing the typical faradaic electrode materials for efficient capacitive deionization (CDI) due to their open architecture and high capacity, have been plagued by kinetics issues, leading to insufficient utilization of active sites and poor structure stability. Herein, to address the conflict issue between desalination capacity and stability due to mismatched ionic and electronic kinetics for the PBA-based electrodes, a rational design, including Mn substitution and polypyrrole (ppy) connection, has been proposed for the nickel hexacyanoferrate (Mn-NiHCF/ppy), serving as a model case. Particularly, the theoretical calculation manifests the reduced bandgap and energy barrier for ionic diffusion after Mn substitution, combined with the increased electronic conductivity and integrity through ppy connecting, resulting in enhanced redox kinetics and boosted desalination performance.

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Rechargeable aqueous zinc-ion (Zn-ion) batteries are widely regarded as important candidates for next-generation energy storage systems for low-cost renewable energy storage. However, the development of Zn-ion batteries is currently facing significant challenges due to uncontrollable Zn dendrite growth and severe parasitic reactions on Zn metal anodes. Herein, we report an effective strategy to improve the performance of aqueous Zn-ion batteries by leveraging the self-assembly of bovine serum albumin (BSA) into a bilayer configuration on Zn metal anodes.

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In this work, a series of 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) radicals bearing different functional groups were exploited as a simple catalyst to promote electrochemiluminescence (ECL) generation in luminol/HO system. These TEMPO radicals were found to facilitate the electrochemical oxidation of HO and luminol through different catalytic mechanisms, as well as the subsequent ECL generation of luminol/HO system. The electrochemical oxidation and luminol ECL generation could be tuned by the functional group on the para-position of TEMPO, for which the structure/activity relationship was revealed.

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Article Synopsis
  • Scientists created a special material that helps make safe drinking water by using light to produce helpful chemicals.
  • They added potassium to a kind of carbon material, which helped another metal (gold) work better with light to produce these chemicals.
  • This new material can clean water quickly, disinfecting 66 liters every day, making it easier for people to get clean water!
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The extensive industrial applications of fuel oil, a critical strategic resource, are accompanied by significant environmental and health concerns due to the presence of sulfur-containing compounds in its composition, which result in hazardous combustion waste. Extensive research has been conducted to develop technologies for low-vulcanization fuel production to address this issue. Consequently, the investigation of catalysts for environmentally friendly and safe photocatalytic desulfurization becomes imperative.

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Pt based organometallic photosensitizers (PSs) have emerged as novel potent photodynamic inactivation (PDI) reagents through their enhanced intersystem crossing (ISC) processes. Currently, few Pt PSs have been investigated as antibacterial materials, with relatively poor performances reported and with structure-activity relationships not well described. Herein, a pair of configurational isomers are reported of Bis-BODIPY (4,4-difluoro-boradizaindacene) embedded Pt PSs.

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The proliferation of harmful algal blooms is a global concern due to the risk they pose to the environment and human health. Algal toxins which are hazardous compounds produced by dangerous algae, can potentially kill humans. Researchers have been drawn to photocatalysis because of its clean and energy-saving properties.

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2D/2D Ni-MOF/g-CN nanocomposite was utilized for desulfurization. The multilayer pore structure and high specific surface area of Ni-MOF/g-CN promote the adsorption and conversion of thiophene. In addition, the two-dimensional structure exposes more active centers and shortens photogenerated carrier migration to the material surface distance, it enhances photogenerated charge transfer.

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The open NASICON framework and high reversible capacity enable NaV(PO) (NVP) to be a highly promising cathode candidate for sodium-ion batteries (SIBs). Nevertheless, the unsatisfied cyclic stability and degraded rate capability at low temperatures due to sluggish ionic migration and poor conductivity become the main challenges. Herein, excellent sodium storage performance for the NVP cathode can be received by partial potassium (K) substitution and multiwalled carbon nanotube (MWCNT) cross-linking to modify the ionic diffusion and electronic conductivity.

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High interconversion energy barriers, depressive reaction kinetics of sulfur species, and sluggish Li transport inhibit the wide development of high-energy-density lithium sulfur (Li-S) batteries. Herein, differing from random mixture of selected catalysts, the composite catalyst with outer delocalized isoelectronic heterostructure (DIHC) is proposed and optimized, enhancing the catalytic efficiency for decreasing related energy barriers. As a proof-of-content, the FeCoO S composites with different degrees of sulfurization are fabricated by regulating atoms ratio between O and S.

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