APPLIED SURFACE SCIENCE
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2025
·
IF 6.9
Changran Zheng,Zhoudong Yang,Baotong Guo,Hanqing Dai,Tianhe Lu,Xi Zhu,Huimin Xu,Bobo Yang,Jun Zou,Sergey Lishik,Jiajie Fan
(Sr, Ca)AlSiN 3 :Eu 2+ (SCASN) phosphors are widely used in white LEDs due to their excellent red spectral performance. However, exposure to high temperature, high humidity, and sulfur-containing environments significantly degrades their performance and long-term stability. Herein, a rapid plasma-assisted deposition technique is employed to apply an ultrathin Si-based nanolayer onto SCASN (SCASN-Coated), enhancing its durability under such harsh conditions. Accelerated aging tests conducted at 100 °C, 100 % relative humidity (RH), and in a sulfur-containing atmosphere reveal that unmodified SCASN retains only 24.1 % of its initial luminous intensity after 1008 h, whereas the SCASN-Coated preserves approximately 41.2 % of their original brightness without compromising intrinsic luminescent properties. First-principles calculations and molecular dynamics simulations further elucidate that SCASN has a strong chemical adsorption effect on SO 2 (−3.056 eV). And the combined presence of SO 2 and H 2 O promotes the displacement of Ca 2+ ions, accelerating degradation. The protective SiO 2 nanolayer drastically reduces the SO 2 adsorption energy (−0.124 eV) and inhibits Ca 2+ ion migration. This surface protection strategy not only augments the resilience of SCASN phosphors under extreme conditions but also provides research paradigm into the degradation mechanisms, thereby offering new avenues for extending the service life of LED devices in challenging environments.
研究领域:
材料科学
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光电子学
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表面工程
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固态照明
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计算化学
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产品关联
DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Xin Huang,Zijun Ran,Zhi He,Jingyu Ran
Mercury has a significant impact on environment and is mainly derived from coal-fired power plant. Herein, we report a potential route for efficient removal of Hg 0 via oxidation reactions using Ce-doped LaCoO 3 supported on CeO 2 catalyst. Catalyst characterization results proved that Ce can successfully substitute a desired part of Co into the LaCoO 3 crystal lattice via a sol–gel method. The Hg 0 removal experiments suggest that Hg 0 removal efficiency decreased in the order of La 0.875 Ce 0.125 CoO 3 /CeO 2 > La 0.875 Ce 0.125 CoO 3 > LaCoO 3 . The presence of O 2 provided more active oxygen and resulted in approaching 100% Hg 0 removal efficiency. Introducing H 2 O and sole SO 2 would significantly reduce the Hg 0 removal efficiency as a result of competitive adsorption on the actives sites of the catalyst. On the other hand, SO 2 could reacted with Hg 0 in the presence of O 2 and thereby recover the high Hg 0 removal efficiency and the La 0.875 Ce 0.125 CoO 3 /CeO 2 catalyst presented a good performance towards sulfur resistance. Furthermore, the catalyst still exhibited a high Hg 0 removal efficiency performance after five times consecutive recycles.
研究领域:
环境科学
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催化
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材料科学
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能源工程
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DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2022
·
IF 5.876
En-Hui Yuan,Meng Li,Ming-Hui Yang,Xiaosheng Huang,Kun Zhang,Weiliang Han,Zhicheng Tang,Zhong-Wen Liu
A direct hydrothermal synthesis strategy is developed to prepare the Cu–Fe-ZSM-5 zeolites by using the ethylenediaminetetraacetic acid disodium dihydrate (EDTA-2Na·2H 2 O) chelated Cu 2+ and Fe 3+ precursors as metal sources. During the crystallization, the metal chelates were spontaneously embedded into the ZSM-5 crystals and subsequently transformed to the zeolites encapsulated copper and iron species after removing the chelating agent via the high-temperature calcination . Rigorous characterizations indicate that the resulted Cu 2+ /Cu + and Fe 3+ /Fe 2+ species are formed ultra-small nano-composites with an average diameter of ∼2.2 nm and highly dispersed in the ZSM-5 zeolite crystals. The acidity of the ZSM-5 zeolites is subtly modulated by the encapsulated Cu–Fe nano-composite. As expected, the as-prepared Cu–Fe-ZSM-5 exhibits outstanding catalytic performance for the selective catalytic reduction of NO x with ammonia (NH 3 -SCR) in the broad reaction temperature ranges of 220–480 °C, which is much better than the Cu–Fe/ZSM-5 prepared with the conventional wetness impregnation method. Furthermore, the resultant zeolites show high stability and good tolerance to H 2 O and SO 2 , and it is very competitive for practical application to eliminate NO x . The developed one-pot hydrothermal synthesis route by using EDTA-2Na·2H 2 O as chelating agent is very convenient and easily reproducible, providing a general guideline to design and fabricate the superior transition metal modified zeolite catalysts for NH 3 -SCR and the related reactions.
研究领域:
催化
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环境科学
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材料科学
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DOI
高影响因子
Journal of Materials Chemistry B
·
2018
·Vol. 6
·期 25
·4232-4238
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IF 4.776
Ming-Yu Wu,Yue Wang,Yan-Hong Liu,Xiao-Qi Yu
Biothiols and SO2 play crucial roles in many physiological and pathological processes. To unravel their complicated interrelationship and cellular cross-talk, it would be highly desirable to develop single-molecule fluorescent probes that can selectively detect biothiols and SO2via different emission channels. Here, a novel chromenylium derivative, BPO-Py-diNO2, based on the rational design of dual recognition sites for biothiols and SO2 selectively and sensitively responded to biothiols with near-infrared fluorescence, and to SO2 with green fluorescence. The emission shift for the two channels was 170 nm. BPO-Py-diNO2 was selectively enriched in lysosomes. It could also be used to evaluate dual-channel imaging of endogenous biothiols and SO2 in living HeLa cells, and it could be used for monitoring the mutual interconversion of biothiols and SO2.
研究领域:
生物化学
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细胞生物学
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医学影像学
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Shiyi Zhang,Xiaopeng Yang,Ying Xu,Haiyang Wang,Fei Luo,Guangming Fu,Dingwei Yan,Miao Lai,Yu Ke,Yong Ye,Xiaoming Ji
Sulfur dioxide (SO 2 ) is emerging as a double-edged molecule, while plays vital roles in food and biological system. However, the fast, highly sensitive, and versatile fluorescent probe still remains a tough challenge among current reports. Herein, we developed a novel aggregation-induced emission (AIE) fluorescent probe TPE-PN for specifically sensing SO 2 derivatives with high sensitivity (150 nmol/L) and rapid response time (10 s) based on intramolecular charge transfer (ICT) mechanism. And the fluorescence at 575 nm decreased tremendously with 31-fold after the probe was treated with HSO 3 − . Employing the probe, the accurate analysis of HSO 3 − was successfully realized in food samples, cells, plant tissues, and zebrafishes. Furthermore, we successfully demonstrate the eruption of SO 2 derivatives within plant during drought and salt stress processes. Therefore, probe TPE-PN illustrates significant potential for applications in food analysis and monitoring of SO 2 derivatives levels in biological systems under stress conditions.
研究领域:
生物学
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食品科学
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分析化学
✓ 已验证
DOI
PubMed
高影响因子
POWDER TECHNOLOGY
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2016
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IF 2.759
Guoqing Wu,Haiming Qin,Shaowei Feng,Xiaojian Tan,Zhaohua Luo,Yongfu Liu,Hezhu Shao,Jun Jiang,Haochuan Jiang
Nano-rods and tremelliform Gd 2 O 2 S:Pr powders were prepared via a urea precipitation method using SO 2 and SO 4 2 − as sulfuration agent, respectively. Gd 2 O 2 S:Pr nano-rods with diameter of about 200 nm were obtained while the scale of tremelliform Gd 2 O 2 S:Pr reaches tens of microns. Gd 2 O 2 S:Pr nano-rods exhibits better crystallinity and stronger luminescence intensity compared to that of tremelliform Gd 2 O 2 S:Pr. Intensive study on their formation process and mechanism is presented in this work. It is proposed that Gd 2 O 2 S:Pr nano-rods were obtained from Gd 2 (SO 3 ) 3 ·3H 2 O nano-rods synthesized via a dissolution-deposition process while tremelliform Gd 2 O 2 S:Pr is prepared via an oriented growth process using SO 4 2 − as sulfuration and regulation agent. As prepared Gd 2 O 2 S:Pr powders show strong green emission light at 512 nm under excitation of 318 nm ultraviolet light. Optimal concentration of Pr 3 + is around 1 mol% since it exhibits the highest luminescence intensity at that concentration. This study is extremely prospective for the preparation and morphology control of sulphide luminescent materials .
研究领域:
材料科学
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光学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Huimin Wang,Yihuan Yang
HPW/Fe 2 O 3 nanorod catalyst displays excellent NH 3 -SCR performance over a broad working window. • HPW/Fe 2 O 3 exhibits higher SO 2 and H 2 O resistance compared with bare Fe 2 O 3 nanorods. • The modification of Fe 2 O 3 with HPW enriches the surface reactive oxygen species and acid sites of catalyst. • The NH 3 -SCR reaction on HPW/Fe 2 O 3 obeys the L-H and E-R routes simultaneously. Exploiting denitration catalysts that integrate exceptional low-and-medium temperature catalytic activity with superior SO 2 and H 2 O tolerance remains a core bottleneck for practical NO x abatement in industrial flue gas treatment. Here, a novel HPW/Fe 2 O 3 nanorod catalyst with highly exposed (110) facet modified by phosphotungstic acid was successfully synthesized. Compared with pure Fe 2 O 3 nanorods, the HPW/Fe 2 O 3 catalyst with a 15% phosphotungstic acid loading exhibited the most outstanding catalytic performance, delivering nearly 100% NO x conversion and N 2 selectivity within the temperature window of 250–425 °C. The characterization results revealed that the interaction between HPW and Fe 2 O 3 generated more oxygen vacancies, which significantly enhanced the low-temperature NO x conversion of HPW/Fe 2 O 3 . Meanwhile, the abundant moderately strong acid sites inhibited the over-oxidation of NH 3 at high temperatures, thereby improving the high-temperature NO x conversion of HPW/Fe 2 O 3 . The introduction of HPW significantly suppressed SO 2 adsorption on the HPW/Fe 2 O 3 surface, endowing the catalyst with favorable tolerance toward the coexistence of H 2 O and SO 2 at 250 °C. Time-resolved in-situ transient measurements and kinetic analyses disclosed that the adsorbed NH 3 species on the HPW/Fe 2 O 3 surface were capable of reducing gaseous/adsorbed NO x simultaneously, following both the Eley-Rideal ( E -R) and Langmuir-Hinshelwood (L-H) routes. The phosphotungstic acid-modified HPW/Fe 2 O 3 catalyst is endowed with abundant active oxygen species and moderately strong acid sites, which greatly facilitates the NH 3 -SCR reaction proceeding via both the Eley-Rideal ( E -R) and Langmuir-Hinshelwood (L-H) pathways. Download: Download high-res image (160KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2026
·
IF 4.9
Cheng Shenghong,Chen Shizhe,Chen Guanghua,Liu Sanping,Jiang Kaixi,Guo Bao
Manganese is essential for zinc electrowinning but its recycling is challenging in oxide ore SX-EW circuits where P204 rejects Mn. This study proposes a novel manganese recycling strategy tailored for SX-EW streams involving the selective SO 2 reductive leaching of zinc anode slime followed by impurity removal. By controlling leaching pH at 5.0 with lime, Mn recovery > 92% while Fe, Ni, Co co-dissolution is suppressed to < 1%, 3%, 12% respectively. Residual impurities in the spent electrolyte are further removed by neutralization and DMDTC chelation. This integrated process effectively recovers manganese while simultaneously eliminating harmful impurities (Cu, Fe, Co, Ni), offering a sustainable solution for Mn management in complex oxide ore hydrometallurgy. The purified electrolyte enabled production of Grade #1 zinc with Pb < 0.005%.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2026
·
IF 18.1
Zhao Yongqi,Wang Pu,Jiang Junjie,Zhao Ziwei,Xiu Aorui,Liu Xiaolong,Zhu Tingyu
Transition-metal oxides offer a low-cost alternative to precious metals for environmental catalysis, yet CO oxidation under humid and sulfur-laden conditions remains challenging due to rapid poisoning. Herein, we report an atomic dispersion of Ti‑decorated MnO x -Fe 2 O 3 catalyst that achieves high activity and remarkable H 2 O/SO 2 resistance. Atomically dispersed Ti provides electron-accepting 3d states from O 2p orbitals, which redistributes and stabilizes selected O 2p states while modifying their hybridization with neighboring Mn/Fe 3d orbitals. The localized electronic restructuring strengthens CO adsorption and facilitates lattice oxygen activation via a Mars-van Krevelen (MvK)-like mechanism, lowering the apparent activation energy to 64.59 kJ/mol. Simultaneously, Ti-O-Fe interfaces weaken SO 2 adsorption (from −1.96 eV to −0.19 eV) and suppress H 2 O competition, retaining >55% CO conversion under 10 vol% H 2 O and 10 ppm SO 2 , far surpassing the parent oxide (<10%). The orbital tuning strategy enables scalable poison resistant catalysts for industrial emission control, reducing reliance on precious‑metal systems.
✓ 已验证
DOI
高影响因子
ATMOSPHERIC ENVIRONMENT
·
2025
·
IF 3.7
Beibei Liu,Lingdong Kong,Yixuan An,Yu Lu,Yuwen Wang,Jie Tan,Xingfu Tang,Lin Wang
Field observations highlight high H 2 O 2 level and enhanced sulfate production during haze episodes in China, but so far, the known H 2 O 2 sources and traditional secondary sulfate formation mechanisms cannot elucidate these phenomena. In recent years, the atmospheric photosensitized multiphase oxidation of SO 2 to trigger sulfate production has attracted great attention. However, few reports on the contributions of triplet excited states and its secondary reactive oxygen species (ROS) formed in photosensitization reaction to sulfate formation. In this study, the aqueous photochemistry of water-soluble humic-like substances (HULIS) proxy was further investigated. It was found that hydroxyl radicals and peroxyl radicals were produced after 313 nm UV irradiation, accompanied by H 2 O 2 production. The effect of HULIS photosensitization on SO 2 oxidation was also investigated. The results showed that the triplet excited states of HULIS ( 3 HULIS∗) cannot directly and effectively oxidize SO 2 to form sulfate, but the formation of sulfate was realized by the oxidation of ROS generated by the secondary reaction of 3 HULIS∗ in the presence of O 2 and hydrogen atom donors such as HULIS itself. These findings clarify the misunderstood role of the 3 HULIS∗ in the photosensitized oxidation of SO 2 , and the study helps better understand atmospheric photosensitization processes.
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Yao Ji,Tiangang Ma,Xianwang Yang,Renshuo Wang,Ke Wang,Xiyu Liu,Xiaolong Wang,Quan Jin
SO 2 sensors generally face challenges such as gas corrosion, poor selectivity, competition from water molecules, and high recovery costs. Metal-organic frameworks (MOFs), which offer excellent chemical stability, structural diversity, and low-cost reactivation, have emerged as ideal candidates for sensing materials. However, MOFs typically exhibit poor conductivity, making them unsuitable for traditional gas detection devices. In order to solve this problem, in this study, SIFSIX-1-Cu with directionally ordered interconnected nanochannels was synthesized. By optimizing the synergistic effects of mass transfer, chemical recognition and pore-size sieving, the performance limitations of traditional adsorption materials have been overcome. Furthermore, by integrating SIFSIX-1-Cu with a microwave circuit, the microwave gas sensor (MGS) detects target gases by monitoring changes in the electromagnetic properties—such as dielectric constant or resonance frequency—of the sensing material induced by gas adsorption. The unique detection mechanism allows the MOFs to operate without the need for conductivity optimization, effectively preventing the loss of active sites during the material modification process. The results showed that SIFSIX-1-Cu microwave gas sensor has a low limit of detection of 8.9 ppb at room temperature, and can achieve high selectivity (selectivity coefficient SO 2 /CO 2 > 11.87) detection of SO 2 in a wide concentration detection range of 10 ppb to 1000 ppm. Meanwhile, the sensor also exhibits excellent moisture resistance and repeatability.
研究领域:
材料科学
·
化学传感
·
纳米技术
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电磁检测
·
环境监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shuyi He,Zheguan Lin,Jie Shi,Linyu Zhou,Qingyan Cui,Tiesen Li,Jiangyong Liu,Yuanyuan Yue
For traditional strategies to construct SO 2 and H 2 O co-resistant systems in low-temperature NH 3 selective catalytic reduction (NH 3 -SCR) catalysts, the primary challenge lies in mitigating the partial loss of redox activity at active sites. Herein, we present an approach to construct a protective system based on interface engineering principles, effectively safeguarding Cu active sites in ZnO/FeCu-SSZ-13 under SO 2 and H 2 O exposure. The core innovation stems from the creation of a strong interface effect originated from Zn-O-Al bonds formed between ZnO and the framework Al on the FeCu-SSZ-13 surface. This interface effect can regulate the electronic structure of Zn O bonds on ZnO component, producing abundant basic sites around the Cu active sites, enabling the preferential adsorption of SO 2 and its oxidation into ZnSO 4 , thereby virtually eliminating the redox ability loss of Cu active sites. As a result, ZnO/FeCu-SSZ-13 achieves exceptional low-temperature NH 3 -SCR performance, maintaining over 90 % NO x conversion even in the presence of SO 2 and H 2 O. Our work opens a new avenue for developing low-temperature NH 3 -SCR catalysts with desired SO 2 and H 2 O resistance, offering valuable insights for advancing catalytic performance in challenging reaction conditions.
研究领域:
催化
·
环境化学
·
材料科学
·
表面工程
·
化学反应工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）