ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Weitao Xing,Kaili Yang,Yonglong Zhu,Xinyi Li,Yan Zhang,Linxia Guo,Jing-Yuan Ge,Yang Bai,Zhongyan Chen
Background Carboxylesterase (CE) is an important enzyme that mainly exists in liver cells and can catalyze the hydrolysis of esters in a variety of pharmaceuticals and xenobiotics. Real-time and non-invasive imaging of CE is of great significance for the study of CE-related metabolic diseases. Although fluorescence sensing technology is considered a promising candidate, the slow response rate (> 60 min), low sensitivity, and short emission wavelength (<650 nm) of most CE probes limit their practical application. Therefore, it is significant and urgent to develop novel fluorescent probes for the rapid diagnosis of CE-related diseases. Results Herein, a near-infrared fluorescent probe, CF 3 -BDP-CE , has been developed by introducing acetyl as the CE recognition unit into the fluorophore meso -trifluoromethyl-BODIP for the detection of CE. CF 3 -BDP-CE exhibited a remarkable fluorescence enhancement at 690 nm for CE with a limit of detection of 7.9 × 10 −4 U/mL. Importantly, the fast response kinetics (within 3 min) make CF 3 -BDP-CE superior to most reported probes. The emission turn-on mechanism was confirmed by theoretical calculation, revealing that after the hydrolysis of CF 3 -BDP-CE , the intramolecular charge transfer process leads to strong fluorescence. Furthermore, CF 3 -BDP-CE has been successfully applied to real-time imaging of endogenous CE changes in living cells and to imaging CE activity differences between tumor and normal cells. In addition, CF 3 -BDP-CE has been successfully used to track CE abnormalities in acetaminophen-induced liver injury model mice. Significance A NIR fluorescent probe CF 3 -BDP-CE was developed to effectively track the dynamic change of CE fluctuation in living cells and mice, with potential applications in the diagnosis of CE-related diseases.
研究领域:
生物化学
·
医学诊断
·
分子影像学
✓ 已验证
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Zhiheng Pang,Fang Cui,Qinghai Ma,Tieyu Cui
As an alternative to noble metal oxygen evolution reaction (OER) catalysts, iron-based materials face limitations in their practical applications due to their relatively low activity and conductivity, despite their cost-effectiveness. In this study, we developed a Ce-doped amorphous FeOOH catalyst (Ce-FeOOH) using an electron modulation strategy, leveraging the strong electron-absorbing capability of Ce 4+ ions to regulate the electronic structure of the FeOOH active site. Experimental results and characterizations demonstrated that Ce 4+ extract electrons from the iron sites via the Ce(IV)-O-Fe electronic bridges, generating highly active iron species with elevated oxidation states, thereby effectively enhancing the OER catalytic performance. The optimized Ce-FeOOH-3:2 exhibited outstanding OER performance in 1.0 M KOH, achieving a low overpotential of 248 mV at a current density of 10 mA cm −2 , a Tafel slope of 44 mV dec −1 . Moreover, the material exhibits stable continuous electrolysis performance for 100 h at overpotentials of 250 mV and 384 mV, respectively. This work provides a novel approach to synergistically modulating the electronic state of iron-based catalysts through high-valent metal doping and structural amorphization, offering valuable insights of the design and development of highly efficient and stable non-precious metal OER catalysts.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·Vol. 20
·期 13
·2308743
·
IF 13.3
Hui Yang,Lu Jia,Qitao Zhang,Saisai Yuan,Teruhisa Ohno,Bin Xu
Long-term exposure to low concentration indoor VOCs of acetaldehyde (CH 3 CHO) is harmful to human health. Thus, a novel isogenous heterojunction CeO 2 /Ce-MOF photocatalyst is synthesized via a one-step hydrothermal method for the effective elimination of CH 3 CHO in this work. This CeO 2 /Ce-MOF photocatalyst performs well in CH 3 CHO removal and achieves an apparent quantum efficiency of 7.15% at 420 nm, which presents ≈6.7 and 3.4 times superior to those generated by CeO 2 and Ce-MOF, respectively. The enhanced efficiency is due to two main aspects including i) an effective photocarrier separation ability and the prolonged reaction lifetime of excitons play crucial roles and ii) the formation of an internal electric field (IEF) is sufficient to overcome the considerable exciton binding energy, and increases the exciton dissociation efficiency by up to 50.4%. Moreover, the reasonable pathways and mechanisms of CH 3 CHO degradation are determined by in situ DRIFTS analysis and simulated DFT calculations. Those results demonstrated that S-scheme heterojunction successfully increases the efficiency of harmful volatile organic compounds elimination, and it offers essential guidance for designing rare earth-based MOF photocatalysts.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2024
·
IF 4.8
Junxue Li,Lingyi Li,Shengnan Zhang,Wei Cheng
In addressing eutrophication resulting from phosphate accumulation, multi-metallic oxides often outperform single-metallic oxides in phosphate adsorption capacity. While alumina is abundant, its stability in acidic or alkaline environments is limited. Contrastingly, zirconium and cerium oxides demonstrate superior acid and base resistance, alongside specific phosphate affinity. This study focuses on the synthesis of Zr-Al and Ce-Al binary oxide nanoparticles through a sol-gel approach for phosphate removal from aqueous solutions, evaluating their efficiency through batch experiments. By judiciously adjusting the Zr/Al and Ce/Al ratios, binary oxide nanoparticles with distinct structures, grain sizes, surface characteristics, and phosphate adsorption properties were fabricated. Results indicate that Zr(3)Al(10) and Ce(3)Al(10) nanoparticles exhibit optimal phosphate adsorption properties among Zr-Al binary oxide variants and Ce-Al binary oxide counterparts, respectively. Kinetic data conform to the pseudo-second-order model for phosphate adsorption on Zr(3)Al(10) and Ce(3)Al(10), while equilibrium adsorption isotherms align with the Langmuir model. Phosphate adsorption capacities reached 83 mg/g for Zr(3)Al(10) and 210 mg/g for Ce(3)Al(10), positioning them as potent adsorbents. Coexisting anions minimally influence phosphate adsorption on Zr(3)Al(10) and Ce(3)Al(10) nanoparticles, indicating high selectivity towards phosphate, whereas Ca 2+ and Mg 2+ ions notably enhance phosphate adsorption. Mechanistically, phosphate adsorption on both nanoparticles follows electrostatic attraction, ligand exchange, and inner-sphere complexation, with surface-OH groups playing a pivotal role. Leveraging the advantageous properties of their parent materials, Zr-Al and Ce-Al binary oxide adsorbents exhibit synergistic effects, enhancing their potential for phosphate removal.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
KEY ENGINEERING MATERIALS
·
2016
·
IF 0
D.C. Huang,You Fu Zhou,Chao Quan,Wen Tao Xu
New luminescent oxynitridosilicates doped with Eu2+ and Ce3+ have been synthesized by solid state reaction method at 1450oC. The host has the general formula La1-ySr1-xSiO3N: (yCe3+, xEu2+), which presents greenish-yellow or orange photoluminescence under UV/blue excitation. Remarkable long wavelength emissions centered above 565 nm were observed for the Ce3+ activated oxynitridosilicates, with compositions LaSrSiO3N:0.02Ce3+, and LaSrSiO3N:(0.02Ce3+, 0.02Eu2+) for 598 nm due to a significant amount of energy transfer from Ce3+ ions to Eu2+ ions. By combining the title LaSrSiO3N:(Ce3+, Eu2+) phosphors with the 450 nm InGaN chip, a broad range of white light with correlated color temperatures of ~3500 K and color-rendering index of 92 can be generated, demonstrating their promising practical applicability to the warm-white light-emitting diodes.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 8
·518
·
IF 5.4
Gu Tiance,Shi Haiyan,Liu Dongying,Wang Menghan,Wu Qingqing,Du Shuting,Shi Xueran,Wang Jing,Han Qian
A cerium ion-modified hemin polymer (Ce-hemin) was synthesized via a facile route, exhibiting photo-responsive oxidase-like activity and excellent stability. The Ce doping effectively prevented hemin aggregation, facilitated electron transfer, enhanced photocatalytic activity, and created a high adsorption capacity for tetracyclines (TCs). Taking advantage of the photo-sensitivity of TCs, a “turn-on” colorimetric sensing platform based on Ce-hemin nanozymes and smartphone-readout was constructed for visual analysis of TCs. This sensor offers a wide detection range and a low limit of detection (0.11 μM). The mechanism of the “turn-on” colorimetric performance was systematically discussed, which involves the abundant generation of superoxide radical anion (·O 2 − ) species through photoexcitation of the surface complex between TCs and Ce-hemin. Furthermore, machine learning was employed for the accurate classification and identification of two representative TCs and chloramphenicol. Thus, this work provides an environmentally friendly strategy for the detection of TCs without H 2 O 2 , and also broadens the application of photo-responsive nanozymes in colorimetric sensors. Graphical
✓ 已验证
产品关联
DOI
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2026
·
IF 2.1
Yu Yue,Chen Xiaolu,Xu Zhiwen,Yang Songlin,Wang Fengqiu,Gao Shuang
A series of PtCe x Ti y catalysts with 1 wt% Pt loading were synthesized and evaluated for the selective hydrogenation of cinnamaldehyde (CAL) to cinnamyl alcohol (COL). The introduction of an optimal amount of Ce into TiO 2 facilitated the formation of Ce–O−Ti structures, which promoted the reduction of Pt species and enhanced their dispersion. Moreover, Ce incorporation significantly increased both the number and stability of Lewis acid sites on the catalyst surface. These sites play a key role in the selective activation of the C=O group and facilitate the targeted addition of hydrogen to this bond. The high catalytic performance is attributed to the highly dispersed Pt⁰ species, abundant surface vacancies, and the presence of beneficial Lewis acid sites, which collectively enhance the adsorption and activation of the C=O bond in CAL. In addition, strong metal–support interactions between Pt and the Ce-Ti carrier contributed to outstanding catalytic stability, as demonstrated by the PtCe 2 Ti 3 catalyst maintaining high activity over five consecutive reaction cycles. Graphical abstract
The alternative text for this image may have been generated using AI.
✓ 已验证
DOI
高影响因子
Applied Materials Today
·
2025
·
IF 6.9
Ruiying Zhai,Sisi Chen,Jiahao Lu,Yijie Yang,Xiaoqi Sun
This study developed a series of yellow and orange pigments with enhanced near-infrared reflectivity. These pigments were prepared through high-temperature solid-state reaction, CeO 2 doping, and Bi 2 MoO 6 modification. The pigment samples exhibit Bi 2 MoO 6 related to the monoclinic crystal system, with no discernible peaks of oxide impurities. The pigments were transformed from white to yellow and orange by doping Ce ions, which have better color performance. The reflectance in the infrared spectrum and near-infrared solar reflectance of all pigment samples were found to be greater than 95 %. After 60 min of exposure to infrared radiation, the internal temperature difference between the Bi 1.88 Ce 0.12 MoO 6-δ painted iron house model and Bi 1.88 Ce 0.12 MoO 6-δ unpainted iron house model reached 8 °C. The color change of Bi 1.88 Ce 0.12 MoO 6-δ was minimal in acidic, alkaline, and high-temperature environments, thus confirming its excellent stability. These characteristics indicate that the synthesized Bi 1.88 Ce 0.12 MoO 6-δ pigment has considerable potential in energy saving and multifunctional coatings.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Xinyu Chen,Min Bi,Qingdian Yan,Deqi Fan,Biao Huang,Bianjing Sun,Chenchen Qin,Chuntao Chen,Dongping Sun,Qian He,Ming Zhao
Designing nanocatalysts with fast water dissociation kinetics is key to achieving the industrial current density of the cathodic hydrogen evolution reaction (HER) for green hydrogen production via water electrolysis, which remains a grand challenge. Here, leverage single-atom engineering,a Ce single-atom-doped amorphous RuO x nanosheet featuring abundant amorphous/crystalline nanojunctions, namely, ac-Ce SA RuO x is successfully developed. When employed as a catalyst for alkaline HER, the ac-Ce SA RuO x catalyst displays an overpotential of only 8.3 mV at 10 mA cm −2 and Tafel slope as low as 23.1 mV dec −1 , outperforming the Ru-based catalysts reported in recent studies. Anion exchange-membrane water electrolyzers (AEMWEs) tests using ac-Ce SA RuO x as the cathode catalyst exhibit a low cell voltage of 1.71 V at 1000 mA cm −2 , and the performance can be well maintained after 300 h. In situ spectroscopic analyses demonstrate the increased coverage of OH species on ac-Ce SA RuO x for enhanced water dissociation. Density function theory calculations suggest that the Ce-doped crystalline nanodomains in the amorphous/nanocrystalline nanojunction could effectively reduce the energy barrier to water dissociation, while the Ce-doped amorphous constituents regulate the H * adsorption, which collectively boost the HER performance. This work offers a new strategy to create amorphous/nanocrystalline nanojunctions in nanocatalysts for enhanced electrocatalysis.
研究领域:
纳米技术
·
电化学
·
能量转换与存储
·
材料科学
·
催化
·
可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Qi Zhang,Ruilin Zheng,Haiyang Wu,Guoyu Zhao,Jianyong Ding,Kehan Yu,Wei Wei
Thermally robust and efficient composite ceramic phosphors (CCPs) combined both the merits of matrix and phosphor have received growing interests. However, high matrix content (e.g., Al 2 O 3 >40 wt%) brings diluted activated ion concentration and dropped photoluminescence (PL) quantum yield (QY). Here, a novel layered array Al 2 O 3 -LuAG: Ce CCP, where Al 2 O 3 and LuAG: Ce thin layers (10–250 µm) are alternately arranged, was presented. Owing to the special structure, thermal phonons and photons are respectively routed into Al 2 O 3 layers and LuAG: Ce layers, which weakens the influence of Al 2 O 3 and heat accumulation on PL properties. Consequently, it exhibits high PLQY (84.1%) and good thermal conductivity (17.1 W·m −1 ·K −1 ). When it is irradiated under high-power density (27.2 W·mm −2 ) blue laser , the luminous efficiency and lumen-density are promoted to 220 lm·W −1 and 5994 lm·mm −2 , respectively. This work provides a promising new microstructure in developing novel phosphor converters for high-brightness laser phosphor display.
研究领域:
材料科学
·
光电子学
·
陶瓷工程
·
光子学
✓ 已验证
DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2025
·
IF 3
Feng Tianxu,Shan Wei,Zhang Yongzhou,Huang Haibo,Tang Hua
Solar photocatalytic degradation and adsorption using metalorganic frameworks (MOFs) offer safe and energy-efficient remediation for water contaminated with small organic pollutants, leveraging their semiconductor-like tunable band structures and inherent porosity. This study reports the de novo synthesis of a visible-light-responsive Ti@Ce MOF heterojunction composite for synergistic photocatalytic degradation and adsorption of recalcitrant organic contaminants. An in-situ growth strategy deposited NO.-functionalized UiO-66(Ce) onto NH 2 -modified MIL-125, forming an S-scheme heterojunction engineered for efficient visible-light-driven hydrogen peroxide (H 2 O 2 ) generation. This in-situ photogenerated H 2 O 2 acts as a potent oxidant, effectively degrading tetracycline. A significantly enhanced photocatalytic degradation rate constant ( k ) for tetracycline was observed, indicating boosted catalytic activity. Mechanistic analysis underscores the critical role of the S-scheme heterojunction in promoting charge carrier separation and enhancing H 2 O 2 production, thereby efficiently driving organic pollutant oxidative degradation. This work provides a novel strategic framework for designing multifunctional MOF composites, advancing high-performance, sustainable water purification technologies.
研究领域:
环境科学
·
材料化学
·
光催化
·
水净化
·
纳米材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2011
·Vol. 94
·期 11
·3976-3982
·
IF 2.169
Hui Luo,Jie Liu,Xuxin Pu,Jie Liang,Zhengjun Wang,Feijiu Wang,Kun Zhang,Yingjie Peng,Bo Xu,Jihong Li,Xibin Yu
The reaction of aluminum with pure water is an eco-friendly approach to generate hydrogen. The main difficulty associated with this approach is that an oxide or hydroxide protective film around aluminum particles prohibit the hydrogen generation. In this article, a kind of highly activated Al–Ce composite material has been developed via a convenient ball milling method. Typically, Al–13 wt% Ce has a total hydrogen production of 1134 mL/g and a conversion yield of 92.42% within 60 min. The influences of the cerium concentration and ball milling time on the hydrogen production efficiency are discussed based on XPS, XRD, FESEM, and BET techniques. In addition, the hydrogen production efficiency can be improved by adding alkali chloride (NaCl or KCl) to the Al–Ce composite materials.
研究领域:
材料科学
·
氢能
·
化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）