PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2026
·
IF 7.8
Hang Jia,Wenjuan Zhang,Jiangtao Li,Tianyu Zhao,Xuheng Liu,Xingyu Chen,Fenglong Sun,Zhongwei Zhao
Tungsten and fluorine are critical to clean energy and semiconductor technologies, yet their frequent co-occurrence in complex ores creates long-standing barriers to efficient and sustainable utilization. Current extraction routes are hampered by severe mutual interference, with substantial tungsten losses entrapped in fluorite concentrate and concomitant fluorine losses retained in tungsten products. Here we present two complementary strategies that enable the simultaneous upcycling of fluorine and tungsten through phase-selective transformation. In the first route, fluorogypsum produced during HF synthesis from tungsten-bearing fluorite, is treated with H 2 O 2 , where peroxo coordination selectively leaches tungsten while stabilizing calcium sulfate; this achieves tungsten recoveries above 95 % at 30 °C and converts waste into environmentally benign gypsum. In the second, tungsten-bearing fluorite is directly decomposed in an H 2 SO 4 -H 3 PO 4 system with added F − , which preferentially complexes Si in the feedstock without consuming fluorine from CaF 2 , thereby suppressing CaF 2 dissolution and CaSO 4 ·2 H 2 O formation under acidic conditions and enabling selective tungsten extraction of up to 95 % while producing a high-grade fluorite concentrate (98.6 % CaF 2 ). Mechanistic studies reveal that the selectivity arises from competitive coordination and solubility control between tungsten- and calcium-bearing species. By coupling mineralogical insight with tailored reaction chemistry, this dual-pathway enables co-recovery of tungsten and fluorine from fluorite-scheelite ores, offering an environmentally benign and streamlined route to sustainable processing of coupled critical elements.
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Materials Today Communications
·
2026
·
IF 4.5
Wei Gan,Can Jiang,Yao Wang,Min Ling,Shengfu Zhang
It is challenging to develop well-designed photocatalysts with high activity. In this work, TiO 2 nanotubes (TiO 2 -NTs，TNT) with well-morphology and high {001} facets exposure ratio were directly synthesized by H 3 PO 4 /HF-assisted two-step anodic oxidation. The results show that the addition of 3 wt% H 3 PO 4 and 0.5 wt% HF into the electrolyte facilitates the preparation of TiO 2 -NTs with an average crack density of 0 % and {001} facets exposure ratios up to 80.00 %. Moreover, the PO 4 3- and HPO 4 2- in the anode effectively hinder the generation of electron current and release of oxygen bubbles on the surface of Ti substrate, which reduces the surface cracks of TiO 2 -NTs. The F - in the electrolyte is adsorbed on the {001} facets of the TiO 2 -NTs, which decreases the energy of the O-Ti-O, thus achieving the purpose of high {001} facets exposure ratio. Ultimately, the excellent optical properties, in conjunction with the synergistic effect of {001} facets-selective orientation and O V , significantly enhanced the photocatalytic activity of TiO 2 -NTs, resulting in the removal of 90.32 % Rhodamine B in 120 min under visible light illumination. This work could shed light on the new approach to the rational design of high-efficiency TiO 2 -NTs-based photocatalysts.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.7
Penghui Li,Jiawei Wu,Kaijun Chen,Anxin Shang,Jiakun Dong,Yuandu Hu
The integration of multiple photonic stopbands into a single microparticle is a coveted goal for advancing multiplexed sensing and high-capacity information encryption. However, conventional fabrication methods typically rely on the complex integration of different colloidal building blocks in terms of sizes or compositions, which increases cost and limits scalability. Herein, we report a facile and scalable strategy for fabricating cylindrical photonic microparticles with tunable dual stopbands from a single photonic composition, thereby eliminating the reliance on different colloidal building blocks. Our approach synergistically combines micromolding with a magnetic field-assisted selective etching process. The incorporation of ferromagnetic barium ferrite nanoparticles (BaFe 12 O 19 NPs) enables precise orientation control of the microparticles, which is pivotal for the site-specific protection and etching that integrates both opal and inverse opal structures into a single microparticle. The ratio between these two distinct photonic regions can be readily tuned, allowing for customizable photonic properties and structural colors. Furthermore, we demonstrate the extensibility of this method by creating multi-segment photonic microparticles with more than two stopbands. Due to the different wettability between the opal and inverse opal regions, the microparticle array exhibits adjustable hydrophilicity and hydrophobicity and potentially possesses antifouling capability. These programmable microparticles, with their anisotropic and tunable optical characteristics, together with tunable hydrophobicity, offer significant potential for developing next-generation information encoding platforms, anti-counterfeiting technologies and displays, and even antifouling pigments.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.3
Mingxin Zhang,Xiaoliang Dong,Dan Yue,Liying Zhang,Haipeng Ji
Large K 2 SiF 6 :Mn 4+ crystals that emit red light surpass conventional micro-powders in both hydrolytic stability and quantum efficiency. However, preparation of K 2 SiF 6 :Mn 4+ crystals to > 1 mm while stabilizing Mn 4+ valence has remained elusive. Herein, seed-assisted crystallization under a controlled cooling ramp from 25°C to –40°C was used which suppresses hydrolysis-driven reduction of [MnF 6 ] 2– and yields K 2 SiF 6 :Mn 4+ crystals with near-unit quantum yield and unprecedented dimensions up to 3 mm—a 200 % size increase over the current record. After 5 h in water the crystals (>2 mm) retain 80.7 % of their initial emission intensity,outperforming sub-millimeter counterparts (58.9 %) and micro-sized powders (3.6 %). The single-crystal like nature enables superior internal/external quantum efficiencies of 97 %/82 % and preserves 82 % of the room-temperature intensity at 500 K. Warm-white LEDs built with these phosphor crystals deliver a high luminous efficacy of 157.3 lm/W and an R 9 value of 79. This work demonstrates that crystal-growth engineering can unlock hydrolysis-resistant fluoride phosphors for high-power optoelectronics.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Chen Ma,Jinshuo Duan,Furong Liang,Jiawei Liu,Haowen Deng,Wanxin Zhi,Fan Xiao,Wanjing Zhang,Baojie Zhang
Multifunctional materials offering high-temperature thermal insulation and electromagnetic wave (EMW) absorption have become a research focus in recent years. Mullite offers excellent thermal insulation; however, it exhibits high infrared transmittance and lacks EMW absorption capability. Silicon carbide (SiC) exhibits infrared-shielding and EMW absorption capabilities but suffers from insufficient stability under long-term high-temperature oxidative exposure. Here, this research designed and fabricated a composite structure by embedding hollow SiC spheres (HSSs) into mullite fibers, aiming to synergistically combine the advantages of both materials. Compared to pure mullite nanofibers, the composite with an HSS content of 30% exhibited 24.4% and 29.3% lower thermal conductivity values at 25 °C and 1000 °C, respectively. The infrared transmittance in the 2.5–8 μm wavelength range decreased from 90% to 32%. Furthermore, at a thickness of 2.0 mm, the composite achieved a minimum reflection loss of −45.37 dB and an effective absorption bandwidth of 4.32 GHz. These improvements originate from synergistic mechanisms enabled by the HSSs. The intrinsic infrared shielding and dielectric loss properties of SiC provide a fundamental performance baseline. Meanwhile, the hollow structure not only hinders solid-phase heat conduction but also enhances infrared attenuation via multiple reflection, scattering, and absorption. Moreover, the introduced heterogeneous interfaces promote interfacial polarization and multiple relaxation processes, which optimize impedance matching and loss capacity, leading to significantly enhanced EMW absorption performance. Overall, this research offers a new approach for designing materials with thermal protection and electromagnetic stealth performance.
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Science China-Materials
·
2026
·
IF 7.4
Li Qing,Tang Jiayuan,Yang Yuhan,Chai Jun,Zhang Xiao,Shao Mingfei,Shen Hangjia
Pore-tuning engineering has been proven as an effective strategy in catalyst design for energy storage and conversion. Herein, we propose a rhombic dodecahedral iron and nitrogen co-doped carbon-based material (Fe-N-C) with hierarchical micro-mesoporous structures using mesoporous silica as the pore template and iron launch vehicle. The as-prepared catalysts (m-Fe/NC) exhibit much boosted ORR activity with half-wave potential of 0.81 V and 0.88 V in acidic and alkaline media, respectively. Furthermore, a superior specific capacity of 815 mAh g Zn −1 and stable cell voltage of 1.31 V is achieved at current density of 10 mA cm −2 when using m-Fe/NC as cathode for zinc-air batteries (ZAB). Advanced characterization techniques and theoretical calculations reveal that the introduction of mesopore structure not only improves the active site exposure, but also the proper curvature-induced strain effect from mesoporous concave surface enhances the intrinsic activity. This work provides significant insights for future development of innovative nanoporous electrocatalysts.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Zhipeng Lin,Jialing Zhuang,Shunyu Chen,Xiufeng Xiao
The development of hydrogel dressings that integrate mechanical compliance, continuous monitoring capability, and on-demand therapeutic functions remains a critical challenge in advanced wound management. Herein, a multifunctional conductive organohydrogel (POTEL) composed of a dual-network polyacrylamide/oxidized sodium alginate (PAM/OSA) hydrogel integrated with tannic acid-functionalized MXene (TA@MXene) nanosheets and lithium chloride was synthesized in a water/ethylene glycol binary solvent system. The resulting POTEL organohydrogel exhibited superior mechanical properties (fracture strain > 1400 %), high electrical conductivity (2 S/m), significant antifreezing performance (stable to −70 °C), and prolonged moisture retention. It also demonstrated an outstanding photothermal antibacterial efficacy under NIR irradiation, achieving > 99 % inactivation against both S. aureus and E. coli. When employed as a strain sensor, the material showed a high sensitivity (gauge factor = 2.70 at 100 % strain) and robust cycling durability (>100 cycles). In a full-thickness skin defect model, the POTEL organohydrogel significantly accelerated wound closure and tissue regeneration through combined photothermal antibacterial action and electrical stimulation (ES), which collectively attenuated inflammatory responses and enhanced collagen deposition. This work provides a scalable strategy for designing multifunctional hydrogels capable of simultaneous monitoring and wound healing, demonstrating a great potential as next-generation smart wound dressings and skin-conformal electronic sensors.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Yang Gao,Xian Du,Zhuo Li,Lihan Wang,Bo Tian,Ruixue Tian,Huiling Du
With the development of industry, large quantities of volatile organic compounds (VOCs) not only cause damage to the ecological environment, but also pose a serious threat to human health. At present, most photocatalysts used for benzene treatment still suffer from problems such as narrow light absorption range, high electron-hole recombination rate, and low charge transfer efficiency. Therefore, the development of high-performance photocatalysts is extremely urgent. The introduction of oxygen vacancies and the construction of heterojunctions can effectively solve the above problems. In this study, a defect-rich photocatalyst was combined with a topology-structured metal-organic framework (MOF) to construct a tightly coupled heterojunction, aiming to address these issues and improve the photocatalytic degradation performance of benzene. By introducing oxygen vacancy-rich TiO₂ nanosheets into NH₂-MIL-125, a tightly coupled Z-scheme heterojunction composite photocatalyst is fabricated. The benzene degradation efficiency of the composite reaches up to 98.5%, which is 1.47 times and 1.27 times that of pure NH₂-MIL-125 and oxygen vacancy-rich TiO₂, respectively, while also exhibiting remarkable stability and high adsorption capacity. Oxygen vacancies act as active sites that strengthen the interfacial electronic interaction of the composite, thereby optimizing the electron transport pathway of the heterojunction and improving the carrier separation efficiency. Under the dual modulation of the heterojunction and oxygen vacancies, the built-in electric field is further intensified, leading to a significant enhancement in the adsorption and catalytic performance of the composite. This study provides an effective design strategy for utilizing oxygen vacancy-driven heterojunctions in catalysts for the efficient abatement of VOCs.
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BIOCONJUGATE CHEMISTRY
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2026
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IF 4.5
Shujie Li,Xingyu Gao,Shuo Li,Ruihan Liu,Xuejun Zhang,Xu Wang,Shao-Kai Sun,Guohe Wang
Accurate visualization of hepatic vasculature and tumor margins is critical for preoperative evaluation and intraoperative guidance in liver cancer. Here, we report a dual-contrast computed tomography (CT) strategy using a long-circulating hafnium oxide nanoprobe to enable concurrent visualization of hepatic vasculature and tumor boundaries. In an orthotopic hepatocellular carcinoma (HCC) mouse model, the nanoprobe provided sustained positive vascular contrast while simultaneously delineating tumor margins with negative contrast for over 120 min. Unlike conventional multiphase CT, this single-injection approach captures both vascular and tumor information in a single scan. This simple yet effective strategy offers new insights into the development of next-generation multifunctional diagnostic nanoprobes.
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WATER AIR AND SOIL POLLUTION
·
2026
·Vol. 237
·期 10
·604
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IF 3.5
Wang Bo,Sun Yang,Jiang Lina,Zhou Peng,Guo Ping,Wang Xu
The widespread use of tetracycline (TC) has led to its accumulation in aquatic environments, posing risks of antibiotic resistance and ecological toxicity, necessitating efficient wastewater treatment solutions. While photocatalysis, particularly using TiO₂, has shown promise, its practical application is limited by low efficiency and rapid charge recombination. To overcome these challenges, this work developed a novel ternary TiO 2 @Ti 3 C 2 /ZIF-67 (T@M/Z) heterojunction photocatalyst through a facile hydrothermal process. T@M/Z-18 composite demonstrated exceptional photocatalytic performance, achieving 92.52% of TC removal and 77.05% of total organic carbon (TOC) mineralization under visible light after 90 min. Systematic studies optimized key operational parameters, revealing that a catalyst dosage of 0.5 g/L and an initial TC concentration of 15 mg/L yielded the highest degradation efficiency. The presence of anions (e.g., Cl − and SO 4 2 ⁻) enhanced TC removal, while humic acid (HA) exhibited a dual role, acting as a photosensitizer at low concentrations but inhibiting degradation at higher levels. The catalyst maintained excellent stability and reusability, with only a slight decline in performance after five cycles. Degradation pathways, identified through high-performance liquid chromatography-mass spectrometry (HPLC–MS) analysis, involved hydroxylation and N-demethylation, leading to reduced acute toxicity. These results highlight the potential of T@M/Z as a sustainable and efficient solution for antibiotic-contaminated wastewater treatment.
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COLLOIDS AND SURFACES B-BIOINTERFACES
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2026
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IF 5.9
Yuheng Wang,Yumin Zhang,Yixiang Huang,Zixuan Xu,Min Li,Gaohong He,Xuehua Ruan,Wenjun Zhang
The catalytic activity of Ce-based nanozymes is significantly positive-correlated with the Ce 3 + ratio. In this work, Ce 3+ content in cerium oxyfluoride nanozymes was efficiently and directly regulated with fluorine-induced charge compensation between fluorine and oxygen, and stabilized by the electronegativity-driven inductive effect, through the facile and room-temperature synthesis for the enzyme /H 2 O 2 -free and highly sensitive UA detection. Remarkably, cerium oxyfluoride exhibited V max of 196 × 10 −8 M·s −1 and K m of 0.347 mM, indicating the superior oxidase-like activity. Thereby, ascribed to the antioxidant property of uric acid (UA), UA was effectively and promptly detected, i.e., a wide linear range of 0.3–1.2 mM, and ultra-low detection limit of 4.5 μM, as well as the significant anti-interference against the common urinary components. Prospectively, the electron-density reforming strategy through the strong electronegative fluorine introduction, extremely regulated the valence of cerium in cerium oxyfluoride to enhance the catalytic activity, via the synthetic route of mildness and facileness, fulfilling the effective real-time detection of UA.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Hao Liu,Yaji Huang,Huikang Song,Tianhang Tang,Hao Shi,Lang Kai,Chenlu Yang
A novel pathway for the co-disposal of municipal solid waste incineration fly ash (MFA) and bottom slag (BS) with waste glass (WG) was proposed. Combined melting experiments and theoretical calculation were employed, which revealed the structural evolution of the CaO-Fe₂O₃-SiO₂ system and the underlying mechanisms of heavy metal immobilization. It was demonstrated that stable glassy products were obtained within a CaO/(Fe₂O₃+SiO₂) mass ratio ( M C / ( SF ) ) range of 0.13~0.41. The leaching concentrations of heavy metals in these vitrified products were suppressed to the relevant regulatory standards. With an increasing M C / ( SF ) , the glass network became more depolymerized, as evidenced by a higher population of low-connectivity Qⁿ units in the structure. However, under Fe₂O₃-enriched system, the Fe coordination shifted from solely tetrahedral [FeO₄] towards a mixed tetrahedral/octahedral environment. Moreover, Pb and Cd were incorporated into the glass matrix via interstitial doping. The depolymerized network dominated by CaO favored the Pb enrichment. Cd tended to be stabilized in the Fe-rich structure, facilitated by the formation of highly localized Cd-O bonds. This study elucidated the coupling effects of oxide composition on glass structure and heavy metal immobilization behavior, providing a fundamental theoretical basis for understanding and optimizing the vitrification process for solid waste treatment.
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