Journal of Fuel Chemistry and Technology•2026•DOI: 10.1016/S1872-5813(25)60615-3
Co-pyrolysis of oil-rich coal and biomass is a promising route to enhance oil and gas production, yet the underlying synergistic mechanisms remain poorly understood. This study investigates the effect of hydrothermal pretreatment (HTP) on the co-pyrolysis of Huangling coal (H) and enzymatic hydrolysis lignin (E). Raw and pretreated samples were characterized via proximate/ultimate analysis, SEM, ICP-OES, and 13C-NMR. Fixed-bed pyrolysis experiments were conducted to evaluate synergistic performance. Results show that HTP reduces oxygen content, develops pore structure, and increases concentrations of inorganic metal ions (Ca, K, Fe) in the aqueous phase. Structural modifications bring the carbon skeleton of E closer to that of H, with increased bridge carbon ratio and improved thermal stability, aligning pyrolysis temperature ranges. For the H/E blend (8:2) after 24 h HTP, tar yield increases by 80.52% compared to untreated blend, with significant rises in aliphatic compounds and monocyclic aromatic hydrocarbons. Gas yields of H2, CO, and CH4 increase by 5.47%, 10.98%, and 9.27%, respectively, while CO2 and pyrolysis water generation are inhibited (water yield decreases by 93.98%). Semi-coke pore structure becomes more developed. The enhanced synergistic effect is attributed to a multi-fold mechanism of 'component interaction-structural modification-catalytic cracking'. These findings provide theoretical support for developing technologies to improve co-pyrolysis of oil-rich coal and biomass, advancing low-carbon, high-quality utilization.
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3915-8
Reactive oxygen species (ROS)-based antibiofilm therapy is limited by short ROS lifetime, restricted diffusion, and biofilm barriers. We designed a bacteria-targeted piezoelectric heterostructure (U-B/F) comprising boronic acid-functionalized UiO-66(Hf) (U-B) and carboxylated fullerene (C70-COOH). Boronic acid groups enable selective bacterial binding. Under ultrasound (US), the Z-scheme heterojunction enhances piezoelectric response and charge separation, amplifying sonocatalytic ROS generation. Fullerene acts as a peroxidase mimic, converting endogenous H2O2 into cytotoxic hydroxyl radicals (•OH). Additionally, favorable band alignment allows US-induced electron transfer from bacteria to U-B/F, disrupting bacterial electron transport and energy metabolism. Transcriptomic profiling confirmed bioenergetic collapse and oxidative stress. In vitro, U-B/F achieved 99.99% elimination of planktonic methicillin-resistant Staphylococcus aureus (MRSA) and 92.41% removal of mature biofilms. In MRSA-infected diabetic mice, U-B/F under US irradiation accelerated wound healing by eradicating infection, alleviating inflammation, and promoting tissue regeneration. This work provides a rational strategy for designing multifunctional nanomaterials integrating bacterial targeting, dual ROS catalysis, and electron transfer interference to combat biofilm-associated infections.
Chinese Journal of Environmental Engineering•2026•DOI: 10.12030/j.cjee.202512052
Constructed wetlands (CWs) with conventional substrates often exhibit limited removal of nitrogen and antibiotics from secondary effluent. This study developed an iron-carbon-manganese ore (Fe-C-Mn) composite substrate CW to enhance simultaneous removal of nitrogen and tetracycline (TC). Under influent TC of 2 mg·L−1 and total nitrogen (TN) of 15 mg·L−1, the Fe-C-Mn system achieved average TC removal of 91.3%, significantly higher than the gravel control (27.2%). TN and nitrate nitrogen (NO3−-N) removals reached 71.7% and 83.3%, respectively, versus 7.8% and 1.2% in the control. Substrate analysis revealed increased surface roughness and synergistic generation of active components (Fe(II)/Fe(III) and Mn(II)), driving autotrophic denitrification and TC biodegradation/chemical degradation. Microbial community analysis indicated reduced overall diversity but selective enrichment of potential TC degraders (e.g., Trichosporon, Bacillota) and denitrifiers (e.g., unclassified_f_Rhodocyclaceae). TC degradation pathways included demethylation, hydroxylation, and ring-opening, ultimately yielding small metabolites. These findings provide theoretical and technical support for enhanced removal of antibiotics and nitrogen from secondary effluent using CWs.