Hunan University of Science & Technology

Cost-effective preparation of functional nanoporous organic polymers as well as utilization of organic contaminants as starting monomers were of great interest.In this works, adopting either organic contaminant bisphenol A(BPA) or 1,1,1-tris(4-hydroxyphenyl)ethane(THE) as a counterpart to polymerize with the aromatic aldehyde-based monomers resulted highly stable hyper-crossed-linked functional porous phenolic resins networks via a facile one-pot condensation reaction.The as-synthesized resins were evaluated by Fourier-transformed IR spectra(FTIR), solid-state NMR(SSNMR), X-ray diffraction(XRD), thermal gravimetric anal.(TGA), SEM(SEM), transmission electron microscope(TEM), and 77 K nitrogen adsorption et al.The steric geometry difference of building monomers endowed the porous phenolic resins networks possessing the Brunauer-Emmett-Teller(BET) special surface areas from 510 to 821 m² g^-1 as well as pore volume from 0.35 to 0.48 cm³ g^-1.Furthermore, ideal adsorbed solution theory (IAST) investigation displayed that the three polymers owned good CH₄ purification performance, and the selectivities of C₃H₈/CH₄, C₂H₆/CH₄ and CO₂/CH₄ reached 241.3, 37.7, and 10.4 at 298 K/1bar, resp.Accordingly, the hydroxyl-rich porous phenolic resins networks with prominent stabilities acquired in this effort manifested potential applications for the CH₄ purification from C₁-C₃ light hydrocarbons.

Carbon dioxide (CO₂) is recognized as one of the most significant greenhouse gases in the atm.As the largest emitter of CO₂ globally, China encounters considerable challenges in mitigating its emissions.The International Energy Agency (IEA) has emphasized that achieving net-zero CO₂ emissions is unattainable without the implementation of CO₂ geol. storage technol.Through a systematic data anal. of the distribution of CO₂ geol. storage projects and carbon storage policies in China and internationally, this paper introduces China′s efforts to promote the development of CO₂ geol. storage projects through the formulation of policies, participation in international cooperation, and cooperation among enterprises.The article is the first to propose that CO₂ geol. storage development in China should be tailored to different provinces by grasping the characteristics and strategic layout of the development of CO₂ geol. storage technologies at home and abroad.Using Shaanxi, a province rich in resources, and Hunan, a resource-scarce province, as representative examples, it suggests that each province should adapt to its local characteristics for CO₂ geol. storage.This new approach holds significant implications for determining key areas of focus, development directions, and formulating related policies for CO₂ geol. storage in the country.

Dendrite growth represents one of the most significant challenges that impede the development of aqueous zinc-ion batteries. Herein, Gd3+ ions are introduced into conventional electrolytes as a microlevelling agent to achieve dendrite-free zinc electrodeposition. Simulation and experimental results demonstrate that these Gd3+ ions are preferentially adsorbed onto the zinc surface, which enables dendrite-free zinc anodes by activating the microlevelling effect during electrodeposition. In addition, the Gd3+ additives effectively inhibit side reactions and facilitate the desolvation of [Zn(H2O)6]2+, leading to highly reversible zinc plating/stripping. Due to these improvements, the zinc anode demonstrates a significantly prolonged cycle life of 2100 h and achieves an exceptional average Coulombic efficiency of 99.72% over 1400 cycles. More importantly, the Zn//NH4V4O10 full cell shows a high capacity retention rate of 85.6% after 1000 cycles. This work not only broadens the  application of metallic cations in battery electrolytes but also provides fundamental insights into their working mechanisms.