CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Rui Li,Sen Bai,Jianxin Liu,Qing Xi,Long Cao,Jinghao Fan,Yawen Wang,Houfen Li,Huibin Ge,Caimei Fan,Lulu Zhang,Shan Gao,Fangxia Xie,Jiancheng Wang
Photocatalytic water splitting is a promising approach for sustainable green hydrogen production, but its practical deployment is severely hindered by two critical limitations: mandatory H 2 /O 2 separation and the requirement for high-pressure hydrogen storage facilities. To address this long-standing bottleneck, a Ru-TiO 2 /Ti 2 C heterostructured photocatalyst is fabricated via a combined hydrothermal and ball-milling route. Operando spectroscopy and DFT calculations verify a cascade charge and hydrogen transfer pathway: photogenerated electrons migrate from TiO 2 to metallic Ru sites to drive water dissociation into surface H* intermediates, which then spillover onto the Ti 2 C substrate. Owing to the strong atomic hydrogen affinity of Ti 2 C, accumulated H* is immobilized in the Ti 2 C lattice via Ti-H covalent bonds, achieving in-situ atmospheric-pressure hydrogen storage. The optimized composite exhibits an in-situ hydrogen storage capacity of 2.1 wt% at ambient temperature and pressure, with a markedly reduced desorption temperature of 216°C and excellent cycling durability. This work establishes an integrated paradigm of photocatalytic water splitting and low-pressure hydrogen storage, offering a feasible strategy to resolve the inherent H 2 /O 2 separation dilemma and advance the practical application of solar-driven hydrogen production.
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ADVANCED FUNCTIONAL MATERIALS
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2026
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IF 19.9
Heyu Wang,Ou Wang,Yu Tang,Wenxiu Xiao,Bao-Li An,Yongmei Zhao,Bo Lu,Xiaohong Wang,Jiaqiang Xu
As an effective sensitizer for chemiresistive hydrogen (H 2 ) sensors, the practical application of Palladium (Pd) is limited by the Sabatier principle, where intrinsically strong Pd─H binding leads to sluggish desorption kinetics and prolonged response and recovery time. A high-entropy alloying strategy was proposed to tailor the local coordination and electronic structure of Pd active sites and weaken the Pd─H binding. Pd x (FeCoNiCu) 1− x ( x = 0.05–0.35)high-entropy alloys (HEAs) were synthesized as sensitizers for SnO 2 to improve its H 2 sensing reactivity, especially its response and recovery rate. Pd 0.2 (FeCoNiCu) 0.8 -SnO 2 sensor exhibits short response and recovery time (0.6 s/2.0 s), a high response of 18.8 toward 100 ppm H 2 (4.06 times higher than Pd-SnO 2 ), a practical detection limit of 1 ppm and a long-term stability (>90% retention over 50 days). The working window of the sensor is also wider, which exhibits a linear response in both low (20–120 ppm) and high (4000–20 000 ppm) H 2 concentration ranges. Experimental analysis and theoretical calculation attribute this performance to the downshift of the Pd d -band center (from −1.84 to −2.57 eV). The electronic modulation alleviates the strong binding of hydrogen intermediates, thus leading to ultrafast response and recovery without compromising sensitivity.
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BIOORGANIC CHEMISTRY
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2026
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IF 5.1
Xue Zhang,Peng Hou,Qi Zhang,Haijun Wang,Hongxia Cui,Likun Liu,Pengfei Qi,Haoqing Ren,Huiling Hou,Song Chen
Hydrogen sulfide (H 2 S) is a gas with dual roles in both environmental and biological systems. Although it is a natural atmospheric constituent and an enzymatically produced signaling molecule, elevated levels of H 2 S are associated with air pollution, cytotoxicity, and various diseases. Current methods for detecting H₂S are often limited by complex sample preparation, low sensitivity, and inadequate selectivity. To address these challenges, we report the development of a novel dual-channel and dual-responsive fluorescent probe HAR-H₂S , which enables rapid, sensitive, and selective detection of H₂S in both environmental and biological contexts. This probe employs coumarin and naphthalimide derivatives as fluorescent reporters and incorporates dual recognition sites for specific H₂S detection. Upon interaction with H₂S, the probe generates distinct blue and green fluorescent signals, facilitating bicolor imaging. The probe demonstrated excellent selectivity, low detection limits (26.4 nM and 35.1 nM), a relatively large spectral separation (126 nm) and rapid response times (within 3 min). HAR-H 2 S was successfully applied to quantify H 2 S in water samples (tap, river, and lake water) and to image H 2 S in various biological systems, including HeLa cells, HepG2 cells, zebrafish embryos, the ferroptosis model and mouse liver tissue sections. Our results highlight the potential of HAR-H 2 S as a versatile tool for H 2 S detection and imaging in both analytical and biological applications, thereby advancing the field of H 2 S research.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122410
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IF 7.5
Jun Wan,Zhaozhe Zhan,Xinchi Wang,Tingyang Li,Yan Wu,Zhiyong Yan
The effective degradation of persistent and potentially toxic glyphosate in water remains a challenge. Herein, we report an engineering strategy of chloride-modulated synthesis to fabricate illite-modified CuFe₂O₄ composite (CuFe₂O₄/Illite) as robust heterogeneous Fenton-like catalysts. The optimized catalyst exhibited outstanding glyphosate removal efficiency (98.6% in 60 min), wide pH adaptability (pH 3–11), and excellent stability (87.85% efficiency after four cycles). Chloride ions were found to slightly promote degradation, whereas common anions like HCO₃ - , NO₃ - , and SO₄² - showed mild inhibition. Quenching experiments and electron paramagnetic resonance (EPR) analysis identified •OH and O₂• - as the primary reactive oxygen species, with a minor contribution from ¹O₂ contribution. X-ray photoelectron spectroscopy (XPS) results revealed that the facilitated Cu²⁺/Cu⁺ and Fe³ ⁺/Fe²⁺ redox cycles served as an efficient electron-transfer highway, dramatically enhancing the heterolytic cleavage of H 2 O 2 and the sustained generation of reactive species. Based on liquid chromatography-mass spectrometry (LC-MS) analysis, a degradation pathway involving C-P bond cleavage and side-chain oxidation was proposed, leading to the mineralization of toxic intermediate Aminomethylphosphonic acid (AMPA) into CO₂, NH₄⁺, and PO₄³ - . This work provides a promising catalyst and elucidates the underlying mechanism for glyphosate wastewater remediation.
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SENSORS AND ACTUATORS A-PHYSICAL
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2026
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IF 5.1
Changyi Guo,Jinyong Hu,Yong Zhang
A bottom-gate-modulated carbon-based FET is developed for room-temperature H 2 S detection. • Complete recovery is achieved by purely electrical activation without external assistance. • The sensor shows favorable selectivity and stability for miniaturized, integrated sensing applications. Increasing attention has been paid to the detection of hazardous gases under room-temperature operating conditions. To address this, this work proposes a novel strategy based on a bottom-gate modulated carbon-based field-effect transistor (FET) for efficient room-temperature H₂S sensing. The FET-type gas sensor was constructed by integrating ZnWO₄/WO₃ composites with the carbon nanotube channel. It was found that applying a −1.5 V bottom-gate bias effectively modulates the surface electronic states of the sensing material, leading to significantly enhanced device performance: a response time of 28 s and a recovery time of 92 s toward 10 ppm H₂S at room temperature, enabling both rapid response and complete recovery. Furthermore, the sensor exhibits a favorable concentration-dependent response within 1–10 ppm, while maintaining high selectivity, consistent reproducibility, and durable long-term stability (maximum response fluctuation <7.1% over 15 days). The performance enhancement is primarily attributed to the gate-bias-facilitated regeneration of adsorbed oxygen species on the material surface. This work not only provides an innovative approach for room-temperature, low-power H₂S detection but also offers a new pathway toward the development of miniaturized and integratable gas sensors. Download: Download high-res image (227KB) Download: Download full-size image
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Nature Communications
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2026
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IF 18.1
Bing-Liang Leng,Xiu Lin,Hou-Yan Dong,Qi-Yuan Li,Shi-Nan Zhang,Jie-Sheng Chen,Xin-Hao Li
Recent studies on the electrocatalytic oxygen transfer from water to organic compounds have gained significant attention due to their sustainability and selectivity. However, the direct coactivation of inert hydrocarbons and water typically requires high oxidation potentials, leading to oxygen evolution reactions and low Faradaic efficiencies. Herein, a Ni-activated tungsten-oxygen covalency anode is designed for the efficient oxygen transfer from water to benzylic C(sp 3 )–H bonds via a Ni-regulated interfacial water structure between the anode and electrolyte. Both experimental and theoretical results reveal the critical role of W–O covalency sites with Ni-heteroatoms for boosting efficient oxygen transfer via breaking the dense interfacial hydrogen bond network and inhibiting the undesired oxygen evolution reactions, facilitating the coactivation of oxygen species and C(sp 3 )–H bonds. Thus, a Faradaic efficiency of > 56% in a water-involved system has been achieved. This work provides important insight into designing electrocatalytic systems for inert C–H oxidation. The direct coactivation of inert hydrocarbons and water typically requires high oxidation potentials. Here, the authors report that a Ni-activated tungsten-oxygen covalency anode is designed to steer the oxygen transfer from water to benzylic C(sp 3 )–H bonds via Ni-regulated interfacial water structure.
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SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 8.3
Faxun Wang,Junyi Lin,Yuxuan Huang,Jiguang Zhao,Bing Tian,Liang Zhao,Bofeng Luo,Zhenliang Ye,Hao Yang,Guotao Duan
Reliable, drift-resistant monitoring of SF 6 enrichment in air near gas-insulated switchgear (GIS) leak points remains challenging for compact and low-cost sensing nodes. Here we report a thermal-conductivity-differential sensor enabled by a materials-circuit co-design: a hierarchical AlN@h-BN/MWCNT nanocomposite coating is integrated onto a Pt-coil element and read out by a Wheatstone bridge with a sealed reference arm and differential amplification. The ternary architecture exhibits a well-developed mesoporous framework with a high BET surface area (111.03 m 2 ·g −1 ), promoting efficient gas transport within the sensing layer and strengthening the thermal-conductivity-induced perturbation of the bridge balance. Under synthetic dry air (21% O 2 /79% N 2 ) at 25 ± 1℃, the output is monotonic over 0.1–5.0% SF 6 , with a recommended linear regime of 0.1–1.0% for quantitative readout; the baseline noise (σ air = 0.16 mV) yields an estimated LOD (3σ) of 0.0654% (∼654 ppm), while 0.1% is the lowest experimentally validated concentration. The optimized excitation voltage (3.0 V) maximizes response by balancing gas-phase modulation against increased non-gaseous heat losses at higher temperatures. The sensor shows reversible cycling (52/23 s response/recovery), humidity-tolerant operation (± 8% deviation over 20–80% RH), and < 5% degradation over 90 days; as expected for a TCD-type mechanism, cross-responses are governed by thermal conductivity rather than chemical selectivity.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Qiu Yu,Sun Mingzi,Wu Jiandong,Chai Chunxiao,Wang Shengwei,Huang Hong,Zhao Xiao,Jiao Dongxu,Xu Shan,Wang Dewen,Ge Xin,Zhang Wei,Zheng Weitao,Song Yujiang,Fan Jinchang,Huang Bolong,Cui Xiaoqiang
The efficiency of the oxygen reduction reaction (ORR) is limited by the scaling relationship in the conventional oxygen associative pathway. To break such limitations, we present an approach to effectively activate the oxygen dissociative pathway through co-confining single p -block (In, Sn, Pb) atoms and interstitial H atoms within Pd metallenes, leading to good ORR performance. PdPbH x metallenes exhibit a high mass activity of 1.36 A mg −1 at 0.95 V (vs. RHE), which is 46.9 times higher than that of the benchmark Pt/C. The minimal performance decay after 50,000 potential cycles confirms a good stability. In situ vibrational spectroscopy investigations and theoretical calculations highlight that interstitial H atoms facilitate the direct dissociation of O 2 while single Pb atoms enhance O 2 adsorption strength. The electroactive PdPbH x metallenes is attributed to the up-shifted Pd-4 d orbitals induced by H and Pb atoms. This research supplies critical inspiration for developing highly efficient ORR electrocatalysts.
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DYES AND PIGMENTS
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2022
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IF 5.122
Qing Guo,Weiguo Chen,Pu Gao,Jinhuan Zheng,Hua Jiang,Zhihua Cui
The colouration of silk fibroin through a Mannich-type reaction with aromatic primary amine-containing dyes ( APAD s), named Mannich-type dyeing, is a novel dyeing method with the advantages of moderate conditions, high selectivity, and high wet fastness. In this study, three novel APAD s, including an H acid structure, D1 - D3 , were designed and synthesized. A similar dye, C1 , without an aromatic primary amine group, was selected as the control. Their spectral and colour fastness properties in aqueous solutions and on silk fabrics were measured and evaluated. In addition, their Mannich-type reactivity to silk fabric was evaluated via experiments and simulated calculations. It was revealed that for the H acid-containing dye with the same chromosome structure, the electron accepting/donating properties of the diazo and coupling components affect the colour of the dye after the Mannich-type dyeing. The substituent effect of dyes C1 – D3 demonstrated that with the changing properties of electron donation and acceptance in the case of the diazonium component, the absorption spectrum ( λ max ) of the neutral aqueous dye solution changed from reddish-orange (505 nm) to bluish-violet (541 nm). The λ max of Mannich-type dyed fabrics was generally red-shifted in comparison with that of dyed fabrics by acidic dyeing, which implied the formation of a reactive bond between the dye and the silk fibroin. The presence of aromatic primary amine groups in dyes is the prerequisite for Mannich-type reactivity. The primary amine groups on both benzene and naphthalene rings have Mannich-type reactivity, which is related to the electron cloud density of amino N atoms. With the increase in electron cloud density of the amino N atom, the colour fixation of the dye and the fibre was improved. After the Mannich-type dyeing, the colour fastness of the dyed fabrics and DMF stripping resistance significantly improved, also indicating the formation of a covalent bond between the dye and the fibre. The simulated calculation predicted the colour of APAD in an aqueous solution and on dyed silk fabric after Mannich-type dyeing, which guides the design and enrichment of APAD s’ chromatography .
研究领域:
纺织化学
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染料化学
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材料科学
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应用光谱学
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高分子化学
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INTERNATIONAL IMMUNOPHARMACOLOGY
·
2026
·
IF 4.7
Tianxiao Hu,Jiayu Qi,Yinuo Xu,Jia He,Qingying Tan,Jie Hao,Jing Wang,Jiewei Hong,Jianwei Wang,Lin Chen,Xiaobing Dou
This study aims to investigate the molecular mechanisms by which 4-hydroxynonenal (4-HNE) regulates hydrogen sulfide (H₂S)-producing enzymes, mediating the pathogenesis of metabolic dysfunction-associated fatty liver disease (MAFLD) during pregnancy, thereby offering novel molecular targets for early diagnosis and intervention of related disorders. By establishing a MAFLD pregnant mouse model, we comprehensively examined the regulatory effects of 4-HNE on placental function and its interaction with the H₂S system. We found that MAFLD pregnant mice exhibited significant glucose metabolic disorders, hepatic steatosis, and placental damage. Mechanistically, 4-HNE disrupts H₂S biosynthesis, thereby impairing its inhibitory effect on the inflammasome pathway while simultaneously activating inflammatory cascades. This synergistic action exacerbates placental pathological damage, manifesting as abnormal vascular function and impaired materno-fetal exchange. Notably, exogenous H₂S intervention partially reversed 4-HNE-induced toxicity, suggesting the therapeutic potential of targeting this pathway. These findings demonstrate the pivotal role of the “4-HNE–H₂S–NLRP3” regulatory axis in MAFLD-associated placental injury, providing novel mechanistic insights and potential therapeutic targets for pregnancy complications.
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FOOD CONTROL
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2026
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IF 6.3
Yiting Duan,Weidong Su,Xinru Deng,Chongyang Liu,Qi Li,Yuan Gao,Xiuzhu Yu
Oxidized triacylglycerols (OxTGs) formed during frying degrade oil quality and raise safety concerns. To resolve oxygen provenance under frying-like conditions, a dual hydrogen–oxygen stable-isotope tracing design (D 2 O, H 2 18 O, 18 O 2 ) was applied to triolein heated at 180 °C for 0–4 h under 3 atm: natural air (NA) + H 2 O, synthetic air (SA)– 16 O 2 + H 2 18 O, and SA– 18 O 2 + D 2 O. Diagnostic fragment ions revealed five triacylglycerols and eight OxTGs dominated by hydroperoxide (–OOH) and hydroxyl (–OH) functionalities, while isotopologue ratios (M+1–M+4)/M quantified label incorporation. Pronounced enrichment occurred only under SA– 18 O 2 + D 2 O, particularly for hydroxylated OxTGs; ratios remained comparatively stable in NA + H 2 O and SA– 16 O 2 + H 2 18 O, consistent with water acting primarily as a kinetic modulator of hydroperoxide turnover and interfacial processes rather than as a direct oxygen donor to OxTGs.The labeling pattern demonstrates that oxygen incorporated into OxTGs derives primarily from molecular oxygen (O 2 ). Mechanistically grounded process controls that limit oxygen availability—such as vacuum or otherwise deaerated frying—are therefore expected to suppress OxTG formation. For decision-ready surveillance and oil-turnover management, an integrated indicator panel is recommended, combining total polar compounds (TPC), sentinel glycerol-core aldehydes (e.g., 9-oxo/10-oxo species), and representative –OOH/–OH OxTGs. Collectively, these findings clarify OxTG formation pathways and provide a practicable basis for risk-informed quality and safety control of frying oils.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2026
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IF 4.7
Ruxue Ma,Yi Xiong,Fuyou Wang,Zhihao Chen,Xinxin Guan,Xiucheng Zheng
Graphitic carbon nitride (g-C 3 N 4 , CN) is promising in boosting H 2 O 2 photosynthesis at present, but facing huge challenges due to the limitations of common CN (e.g. small specific surface area, low absorption coefficient, and fast recombination of photoinduced carriers). To overcome these drawbacks, herein, the novel type-II heterojunctions are successfully constructed from hexagonal boron nitride (h-BN, abbreviated as BN), melamine, and KCl with the one-pot calcination method. The molten salt effect of KCl and the hard template effect of BN optimize the interlayer spacing, porosity and structural uniformity of CN, thus optimizing the adsorption and photocatalytic properties. Moreover, the constructed heterostructure between BN and modified CN further favors the photoinduced charge transfer. Hence, the resulting composites afford exciting photocatalytic H 2 O 2 synthesis performance. Particularly, catalyzed by MCN/BN-2, the H 2 O 2 production rate is separately 1515.05 μmol g −1 h −1 and 3382.17 μmol g −1 h −1 irradiated by visible light and the simulated solar light, which are significantly higher than those over MCN, BN, and most of CN-based materials previously reported. The results of band potential analyses, relevant radical scavenging experiments, as well as electron paramagnetic resonance measurements verify that the photocatalytic H 2 O 2 production over MCN/BN-2 by using 10 vol% EtOH solution is predominantly through the two-step single-electron oxygen reduction reaction (ORR) process. Also, the one-step two-electron ORR involves in H 2 O 2 formation. This work not only develops a novel broad-spectrum responsive metal-free photocatalyst, but also enriches the deep understanding of the roles played by molten salt engineering and heterostructure in photocatalysis.
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