ACS Sensors
·
2026
·
IF 10.9
Peng Xu,Yanlei Guo,Xin Lv,Shuting Wei,Dan Yang,Renquan Guan,Yuxin Wang,Yingmin Teng,Aiceng Li,Huaqiao Tan,Zhongling Lang,Zheng Lou,Lili Wang,Zhao Zhao
The necessity for high-efficiency, low-power room-temperature (RT) ammonia (NH3) sensors is particularly acute in environmental monitoring, industrial safety, and medical diagnostics. However, conventional chemiresistive sensors frequently require elevated temperatures to initiate reactions, leading to high energy consumption and potential safety risks. Inspired by plant photosynthesis, this paper successfully designs a ternary S-scheme heterojunction for a photo-activated RT NH3 sensor. The design effectively mimics the efficient charge transfer process in photosynthesis, thereby significantly promoting the separation and migration of photogenerated carriers and enhancing the sensing performance. Experimental results demonstrate exceptional performance under illumination: a high response value of 1679% (representing a 20-fold improvement over the dark state), rapid response and recovery times of 2.1 s and 1.9 s, respectively, along with outstanding selectivity, excellent stability, and a detection limit as low as 17 ppb. This work demonstrates a novel, efficient RT photo-activated NH3 sensor and provides innovative insights into designing biomimetic, smart gas-sensing materials and devices.
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Advanced Materials Technologies
·
2026
·
IF 6
Yuhao Chen,Jie Liang,Qingyun Ma,Haitao Liu,Chongxiao Xia,Na Zhao,Zhichao Kan,Qing Yang,Feng Chen
As a crucial part of optical systems, optical windows play an important role in medicine and industry, yet their performance is often compromised by surface contamination. Inspired by the lacrimal gland's tear storage and secretion mechanism, we propose a Lacrimal Gland-inspired Active Replenishing Slippery Surface (ARSS) fabricated by femtosecond laser microprocessing. The surface integrates embedded storage cabins and a thermally responsive heating circuit such that localized heating creates a temperature gradient upon activation, inducing both thermal expansion of the stored silicone oil and Marangoni flow for stimulus-responsive lubricant secretion to replenish the sliding layer. The fabricated surface exhibits high transparency exceeding 90%, excellent self-cleaning properties against challenging pollutants including marine organisms, dust, and salt crystallization, and exceptional durability withstanding over 50 000 droplet sliding tests without performance degradation. This bioinspired design offers a long-lasting anti-fouling solution for optical windows, with significant potential for applications in marine engineering, biomedical devices, and other demanding environments.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Ma Jing,Li Jiali,Wang Xiejun,Yang Ziyan,Yue Yifan,Zhao Fuying,Zhang Zhaobang,Tao Ran,Zhu Jing
Conventional H 4 PMo 11 VO 40 (HPAV)
catalysts for the selective oxidation of methacrolein (MAL) to methacrylic
acid (MAA) are limited by insufficient active-site accessibility and
poor mass transport. Herein, hollow porous core–shell UF-CsPAV
catalysts were prepared using SiO 2 microspheres, PEO–PS
copolymer, and urea-formaldehyde (UF) resin as a dual-template/organic
precursor system. The optimized catalyst exhibited a specific surface
area of 438.0 m 2 · g –1 and well-developed
mesoporous channels. During calcination, NH 4 + species generated from the UF resin regulated the heteropolyacid
environment, increasing acidity, the V 4+ /V 5+ ratio, and terminal oxygen species. At 335 ° C and a space velocity
of 1020 h –1 , the catalyst prepared with 1 μm
SiO 2 microspheres and 50 wt % CsPAV achieved 88.1% MAL
conversion, 91.2% MAA selectivity, and MAA space-time yield (STY)
of 1.54 mmol·cm –3 ·h –1 over 100 h. This work demonstrates an integrated strategy for coupling
porous-architecture control with acid-redox regulation in MAL oxidation.
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ENERGY & FUELS
·
2026
·Vol. 40
·期 35
·19600-19613
·
IF 6
Dai Xinrui,Lin Min,Wang Hua,Zhu Xing
High-loading chromium oxide catalysts are attractive
for the dehydrogenation
of ethylbenzene (EB) to styrene (ST), but the migration, aggregation,
and irreversible restructuring of Cr species during high-temperature
calcination and reaction often reduce active-site accessibility and
accelerate catalyst deactivation. Herein, we report a reverse double-solvent
strategy to construct a shape-preserving mesoporous SiO 2 framework within a Cr-MOF precursor, yielding a Cr@Si-6 catalyst
in which Cr 3+ -rich nanoscale Cr 2 O 3 domains and highly dispersed chromate-like Cr 6+ species
are stabilized within a silica cage-like network. This architecture
integrates three complementary structural features: the homogeneous
Cr distribution inherited from the MOF precursor, physical confinement
by the mesoporous SiO 2 framework, and chemical anchoring
with electronic regulation through Cr–O–Si interfacial
linkages, thereby reconciling high Cr loading with high dispersion.
Structural and spectroscopic characterizations show that the SiO 2 skeleton suppresses long-range Cr migration, aggregation,
and the development of bulk-like Cr 2 O 3 domains,
while Cr–O–Si interfacial coupling regulates the local
coordination and electronic environment of the Cr species and strengthens
their resistance to reduction-induced restructuring. In the chemical
looping oxidative dehydrogenation of ethylbenzene (EB-CL-ODH), lattice
oxygen participates in EB conversion during the reduction step, followed
by regeneration of the reduced catalyst in a separate O 2 oxidation step. Cr@Si-6 achieves 80% EB conversion, 91% ST selectivity,
and 73% ST yield at the moderate temperature of 450 ° C, outperforming
directly calcined Cr-MOF-600 and conventional Cr/SiO 2 ,
while maintaining an ST selectivity above 90% with no obvious decay
in EB conversion over 40 redox cycles. Postreaction XRD, Raman, TG/DTG,
GC–MS/TIC, and SEM/EDS analyses further show that the confined
Cr 2 O 3 /SiO 2 architecture is largely
preserved and that reaction-induced carbonaceous and heavy organic
deposits can be substantially removed through oxidative regeneration.
This work demonstrates that integrating MOF-derived Cr distribution,
mesoporous silica confinement, and Cr–O–Si interfacial
regulation provides an effective strategy for constructing high-loading,
highly dispersed, and regenerable Cr-based oxygen carriers for moderate-temperature
EB-CL-ODH.
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ACS Nano
·
2025
·
IF 16
Shujie Li,Houde Wu,Li Guo,Xiaoyi Wang,Gang Shu,Xinxing Li,Shao-Kai Sun
Achieving high resolution while minimizing contrast agent dosage remains a key goal, yet a major challenge in contrast-enhanced computed tomography (CT) imaging. Herein, we propose an artificial intelligence-assisted low-dose high atomic number contrast agent for ultrahigh-resolution CT imaging. As a proof of concept, high-quality PEGylated hafnium oxide nanoparticles (DA-HfO2 NPs) are synthesized, exhibiting superior X-ray attenuation, high hafnium content (36%), excellent water solubility, appropriate hydrodynamic size (13.5 nm), and prolonged circulation half-life (161.9 min). High-dose DA-HfO2 NPs enable extended ultrahigh-resolution vascular imaging with a spatial resolution of 0.15 mm and a time window of at least 60 min. More importantly, by integrating artificial intelligence, the low-dose contrast agent (at 25% of the standard dose) achieves imaging quality comparable to that of the high-dose agent in both contrast density and spatial resolution, while simultaneously enhancing biosafety. This strategy enables high-resolution imaging at reduced contrast agent doses and offers a promising approach for sensitive and safe CT angiography.
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CHEMICAL ENGINEERING COMMUNICATIONS
·
2025
·
IF 2
Fan Pan,Lijiang Tian,Fulong Chen,Jie Zhang
The photocatalytic efficiency of titanium dioxide(TiO2) is easy to restrict by rapid recombination of carriers, narrow spectrum response range, and low specific surface area. Constructing heterojunctions has been widely acknowledged as a viable strategy to enhance the photocatalytic performance of TiO2. Here, TiO2@MIL-101(Cr) heterojunction was synthesized via the in-situ method and applied to adsorbing and photocatalytic degrading of gaseous benzene. The findings demonstrate 40TM exhibited the best adsorption(1157.03 μgC6H6/(g·h)) and photocatalytic(817.80 μgC6H6/(g·h)) performance, which were 2.05 and 5.21 times of TiO2, respectively. The enhancement of adsorption performance probably resulted from the higher specific surface area(637.33 m2/g) and the micro-mesoporous structure. The excellent photocatalytic performance might stem from the extended wavelength response range(400–700 nm) and the Z-scheme heterojunction formation. The possible mechanism is that electrons in MIL-101(Cr) and holes in TiO2 could participate in redox reactions to generate radicals, with superoxide radicals(∙O2−) and hydroxyl radicals(∙OH) being identified as the primary active species for benzene degradation. Overall, this investigation offers a valuable reference for the application of heterojunction catalysts in the field of adsorption-photocatalytic degradation of volatile organic compounds (VOCs).
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Advanced Science
·
2025
·
IF 14.1
Runchao Dong,Hulin Wang,Jia Zhang,Hongxin Yin,Genqiang Liu,Bartosz Orwat,Beata Luszczynska,Weijun Li,Dongdong Zhang,Huan He,Zhentao Du,Shanliang Chen,Weiyou Yang
Manipulating the interfacial and surface carrier dynamics within nanostructured semiconductors is pivotal for advancing the electrical and optical performances of photoelectrochemical (PEC) photodetectors (PDs), particularly for durable underwater optical communication systems. Herein, a highly responsive and robust self-powered PEC UV PDs based on SiC/Au heterojunction nanoarrays is explored, by leveraging the synergistic effect from localized surface plasmon resonance (LSPR) of Au nanoparticles (NPs), heterojunction interfacial engineering, integrated self-supporting photoelectrode architecture, 1D nanoarray benefits, and inherent chemical stability of SiC. SiC nanowire (NW) arrays are fabricated via anodic oxidation and subsequently decorated with tailored densities of Au NPs using controlled sputtering. The as-assembled SiC-based PEC PDs demonstrate exceptional UV (375 nm) photodetection behaviors with rapid response ( τ r / τ d , 86.5/170.95 ms), high responsivity ( R λ , 1244.95 mA W −1 ), excellent detectivity ( D * , 6.35 × 10 11 Jones), and remarkable external quantum efficiency ( EQE , 412.45%). Moreover, they exhibit broad pH tolerance and excellent long-term stability against full aquatic environments. This work provides a strategic approach for designing high-performance self-powered PEC PDs for reliable underwater optical communication, such as liquid environmental monitoring, ocean exploration, and biomedical detection.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Tianhang Tang,Yaji Huang,Huikang Song,Hao Liu,Hao Shi,Jun Zhang,Yizhuo Qiu,Lang Kai
Safe and efficient disposal of hazardous waste fly ash (HFA) has become a worldwide problem.Hazardous waste and furnace slag contain various heavy metals such as Mn, Cu, Zn, and Cr, posing significant threats to both the environment and human health.co-vitrification of fly ash and bottom slag has the advantages of low consumption and green, and has the potential for large-scale disposal of hazardous waste. On this basis, the co-vitrification of hazardous waste fly ash with bottom slag (HBA) was realised using waste glass (WG) as a flux. A new method for HFA/HBA co-vitrification was proposed. The effects of HFA/HBA ratios on glass conversion rate, heavy metal solidification, and melting mechanism were investigated. The results showed that at 1300°C, with the increase of HBA doping, Ca/Al was basically unchanged, SiO2 increased, and the glass conversion rate increased up to 98.71%. In addition, the effects of Fe, S, Cl and other elements content and valence changes on the glass melting and heavy metal solidification were investigated, and it was proved that Fe, S, Cl and other elements have different effects on the stabilisation of different heavy metals.The presence of iron in particular leads to the formation of spinel phases, which play a significant role in heavy metal immobilisation.By adjusting the HFA/HBA ratio, the overall solidification rate of raw ash can reach 94.6%,while ensuring a glass transition rate exceeding 85%, the HFA/HBA-WG system effectively cures a significant quantity of heavy metals. The HFA/HBA-WG system effectively cured a large amount of heavy metals, which provided a reference for the migration law of HFA/HBA-WG glass melting and heavy metal solidification.
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ACS Catalysis
·
2025
·
IF 13.1
Yuchen Zhang,Songpei Zhang,Yuxue Yue,Mingyi Xiao,Guangyu Cheng,Yilun Pan,Shitong Liu,Chunfa Li,Jia Zhao,Xiaonian Li
The Deacon process is important and highly desired for chlorine recycling in the chlor-alkali industry. Ru-based catalysts have always attracted much attention in the Deacon reaction; however, they are very easy to deactivate. One of the most advanced methods for adjusting the electrical and geometrical configurations of metal centers is lattice strain engineering, which plays a key role in controlling the interactions between adsorbate molecules and catalytic surfaces. In this study, a catalyst was developed via lattice matching between the active site and the support to enhance d-electron density near the Fermi level and strengthen metal–support interactions. The resulting catalyst achieves sustained chlorine production with a conversion rate of 90% and maintains stability for over 200 h during the Deacon process. This work presents a strategy to inhibit the aggregation of RuO2 and a fresh platform for designing highly stable catalysts.
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Carbon Letters
·
2025
·
IF 5.8
Wang Shihui,Lei Yuyao,He Chao,Miao Junhe,Liu Yang,Xie Quanhua,Hassan Karimi-Maleh,Zhong Nianbing
In the pursuit of achieving in-situ real-time detection of methanol production rate during the photocatalytic reduction of CO 2 , we developed a methanol sensor using a copolymer-coated fiber Bragg gratings. The theoretical model of methanol measurement by sensor was established. The effect of methanol-selective sensitive material and its thickness on the performance of the sensor were investigated. Humidity and temperature interference to sensor measurements was compensated. Furthermore, TiO 2 photocatalyst was prepared and the photocatalytic reactor was constructed. The methanol production rate in the photocatalytic CO 2 reduction process was monitored by the prepared sensor in-situ. The results highlight that the fiber Bragg grating methanol sensor with 600 nm-thick poly(N-isopropylacrylamide)/polymethyl-methacrylate coating showed a high sensitivity, lower limit of detection, fast response and recovery speed, and high selectivity. The methanol generation rate of TiO 2 photocatalytic reduction of CO 2 measured by gas chromatograph and prepared fiber Bragg grating methanol sensor was 1.42 and 1.53 μmol/g-cat·h, respectively, the error of the two detection methods was 7.86%. This highlights the efficacy of the developed fiber Bragg grating methanol sensor for real-time in-situ detection of the methanol production rate during the photocatalytic reduction of CO 2 .
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Applied Physics Reviews
·
2023
·Vol. 10
·期 2
·
IF 15
Hu Chuqiao,Du Zhijian,Wei Zhongming,Li La,Shen Guozhen
Ti3C2Tx MXene as a representative material in the emerging two-dimensional (2D) MXene family with high conductivity, abundant functional surface terminals, and large layer spacing is supposed to show specific semiconducting properties like other 2D graphene or transition metal dichalcogenides, thus extending Moore's law beyond silicon. However, despite extensive efforts, the design of Ti3C2Tx MXene based semiconductor materials often depends on the availability of traditional semiconductors to form heterojunctions, where Ti3C2Tx MXene is still in metallic characters and is not in dominant status in the heterojunctions. Here, we demonstrate semiconducting Ti3C2Tx MXene modified with dodecyl (−C12H26) groups, as functionalized Ti3C2Tx MXene possesses opened and typical layer-dependent bandgap. The new arising characteristics, red-shift of characteristic peaks, and intensity ratio of the A1g(C)/A1g(Ti, C, Tx) in Raman spectroscopy suggested the successful grafting of the −C12H26 groups on the Ti3C2Tx MXenes. In addition, the theoretical calculations by density functional theory, photoluminescence spectrum, together with photoelectric measurements of Ti3C2Tx-C12H26 MXene on different layers, show a tunable bandgap of 0.49–2.15 eV and superior photoresponse properties in fabricating near infrared photodetectors.
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DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 14
·4423-4428
·
IF 4
Xue-Ying Zhang,Xiao-Han Zhang,Bing-Ping Yang,Jiang-Gao Mao
A new alkaline earth–rare earth iodate, Ba2Ce(IO3)8(H2O), has been synthesised by a hydrothermal method and its structure has been determined by single-crystal X-ray diffraction. Ba2Ce(IO3)8(H2O) crystallises in the polar space group Pna21 (No. 33) with unit cell parameters of a = 15.5042(5) Å, b = 7.8841(3) Å, c = 19.5359(8) Å, V = 2388.00(15) Å3, and Z = 4. The structure of Ba2Ce(IO3)8(H2O) is characterised by zero-dimensional (0D) [Ce(IO3)8(H2O)]4− units separated by Ba2+ cations. Large crystals of Ba2Ce(IO3)8(H2O) with dimensions of a few millimetres have been grown. The UV-vis-NIR transmission spectroscopy measurements of the compound showed that it has a short wavelength absorption edge at 381 nm. Ba2Ce(IO3)8(H2O) exhibits a relatively weak second-harmonic-generation (SHG) response, about 0.2 times that of KDP, which is mainly due to the fact that the polarisation effects of the IO3 groups in the structure largely cancel each other out. The relationships between the structure and the physical properties of Ba2Ce(IO3)8(H2O) have also been calculated theoretically. Ba2Ce(IO3)8(H2O) has a band gap of 2.44 eV, which is determined by the Ce–O and I–O interactions and is larger than those of many simple metal iodates. The introduction of alkaline earth metals favours an increase in band gap. Our work shows that the SHG and birefringence properties are closely related to the arrangement of the functional groups in the compounds.
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