Surfaces and Interfaces
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2025
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IF 6.3
Junjie Xue,Xuexin You,Fangwei Lu,Haining Zhang,Bo Gao,Chengrui Xin,Fengyu Li,Baimei Tan,Xinhuan Niu,Simin Li,Fan Zhang,Hui Shen
Surface modification represents one of the most effective methods for tailoring the properties of CeO 2 particles in chemical mechanical polishing. Although numerous studies have demonstrated preliminary evidence that ligand structure plays an important role in determining the performance of modified CeO 2 , fundamental insights into the structure-property relationships between ligand coordination number and polishing performance remain lacking in the literature. By comparing the polishing performance of CeO 2 slurries modified by a series of phosphorus ligands with varying numbers of coordination sites-including H 3 PO 4 , aminotrimethylene phosphonic acid (ATMP), and diethylenetriaminepenta(methylenephosphonic acid) (DTPMP)-we demonstrate that ligands with more chelating sites yield superior modification effects. Specifically, optimal performance in terms of suspension stability, material removal rate, and surface quality was observed for slurries modified with DTPMP. Mechanistic investigation through density functional theory calculations reveals that both the coordination strengths and ligand densities on the CeO 2 surface are correlated with their coordination number, which results in distinct performance characteristics of the prepared slurries. This work not only elucidates the fundamental relationships between ligand coordination number and the polishing performance of CeO 2 slurries but also provides a practical strategy for developing high-performance slurries required for chemical mechanical polishing.
研究领域:
材料科学
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表面化学
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纳米材料
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半导体制造
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胶体与界面化学
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DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Sihang Lu,Jiahui He,Wenkai Chen,Gui Chen,Haiwei Tang,Yiwen Xiao,Bailin Xiang,Haizhou Zhang,Ye Yuan
An effective approach for the production of high-value benzyl alcohol (BOL) and benzaldehyde (BAL) via solvent-free liquid-phase oxidation of toluene with O 2 over CeO 2 –MnO 1.68 @CeOHCO 3 catalysts has been established in this work. The catalyst was formed using the interfacial oxidation-reduction method with the CeOHCO 3 as the template. Compared with CeOHCO 3 , MnO 2 and CeO 2 , the catalytic performance of CeO 2 –MnO 1.68 @CeOHCO 3 was significantly improved in the oxidation of toluene, with the activity could be maintained over five consecutive reaction runs. The catalytic performance of the toluene oxidation has been improved due to the synergistic effect of the Mn and Ce species of the catalyst. Under optimum reaction conditions, 6.7 % toluene conversion was achieved with an excellent level of selectivity for the target products (69.7 % selectivity to BOL and BAL). This study may reveal a new approach to the preparation of high value-added aromatic alcohols and aldehydes through the liquid-phase catalytic oxidation of aromatic hydrocarbons in the solvent- and additive-free.
研究领域:
催化
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化学合成
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材料科学
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有机化学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Linghu Meng,Yuli Zhao,Guiwu Liu,Siwei Liu,Xiangzhao Zhang,Shahid Hussain,Mingyuan Wang,Guanjun Qiao
Real-time, room-temperature nitrogen dioxide (NO 2 ) monitoring is crucial for protecting human health and the environment, yet conventional sensors face limitations on high-temperature operation and external power dependence. Here, we report a self-powered zinc-air battery-driven NO 2 gas sensor based on a multiple grain boundary-engineered CeO 2 (MGB-CeO 2 ) air cathode. Abundant grain boundaries in MGB-CeO 2 promote oxygen vacancy formation, providing more active sites that facilitate NO 2 adsorption and charge transfer. Compared to nanorod CeO 2 (NR-CeO 2 ) sensor, the MGB-CeO 2 sensor achieves a 3.5-fold higher response of 21.2 % to 10 ppm NO 2 , along with shorter response and recovery times. Density functional theory (DFT) calculations confirm significantly higher NO 2 adsorption energy for MGB-CeO 2 than that for NR-CeO 2 , which can be attributed to its defect-rich structure. The MGB-CeO 2 sensor presents outstanding selectivity, low practical limit of detection, and excellent long-term stability. This work provides a novel strategy for the development of self-powered gas sensors, offering valuable insights into electrochemical sensing for practical implications.
研究领域:
材料科学
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环境监测
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电化学传感
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纳米材料
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能源器件
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Deyang Ning,Junshan Zhang,Arun Murali,Yuanpei Lan,Chaoyi Chen,Shaoyan Yang,Wei Zhang,Junqi Li
In this work, a novel nitrogen-doped reduced graphene oxide-ceria (N-doped rGO-CeO 2 ) photocatalyst was successfully synthesized and exhibited a notable capability in degrading various organic pollutants . Among the synthesized samples, rGO-CeO 2 -900 N 2 demonstrated the most efficient photocatalytic activity , achieving a 77.43% degradation rate for tetracycline (TC) fitting the modified Elovich model ( R 2 = 0.99). The CeO 2 addition can increase defects and amorphous carbon species in rGO in Raman spectra . The rGO adding and N doping can contribute to more effective separation of photo-excited electrons/holes ( e - /h + ) and a faster rate of charge transfer via the results of photochemical tests. With the combination between rGO and CeO 2 , the N doped rGO-CeO 2 catalyst gains certain anti-H + ability in TC degradation and more·O 2 - can be generated under light, while the N doping can form an impurity level N 2p in CeO 2 and create additional reactive sites on the rGO. This N doped rGO-CeO 2 photocatalyst is well-suited for the harmless degradation and offers significant potential in wastewater treatment and pollution control.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Journal of the American Chemical Society
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2024
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IF 14.4
Hao Yu,Yujin Ji,Chenchen Li,Wenxiang Zhu,Yue Wang,Zhiwei Hu,Jing Zhou,Chih-Wen Pao,Wei-Hsiang Huang,Youyong Li,Xiaoqing Huang,Qi Shao
A strain engineering strategy is crucial for designing a high-performance catalyst. However, how to control the strain in metastable phase two-dimensional (2D) materials is technically challenging due to their nanoscale sizes. Here, we report that cerium dioxide (CeO2) is an ideal loading material for tuning the in-plane strain in 2D metastable 1T-phase IrO2 (1T-IrO2) via an in situ growth method. Surprisingly, 5% CeO2 loaded 1T-IrO2 with 8% compressive strain achieves an overpotential of 194 mV at 10 mA cm–2 in a three-electrode system. It also retained a high current density of 900 mA cm–2 at a cell voltage of 1.8 V for a 400 h stability test in the proton-exchange membrane device. More importantly, the Fourier transform infrared measurements and density functional theory calculation reveal that the CeO2 induced strained 1T-IrO2 directly undergo the *O–*O radical coupling mechanism for O2 generation, totally different from the traditional adsorbate evolution mechanism in pure 1T-IrO2. These findings illustrate the important role of strain engineering in paving up an optimal catalytic pathway in order to achieve robust electrochemical performance.
研究领域:
材料科学
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电化学
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催化科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF RARE EARTHS
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2025
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IF 7.2
Zijun Huang,Xiaohua Cao,Huaiyu Xu,Miao Lin,Dedong He,Dingkai Chen,Jichang Lu,Yongming Luo
Methyl mercaptan (CH 3 SH) is notorious for global air pollution owing to its odorous characteristics and adverse health effects. Although CeO 2 is currently regarded as a promising catalyst for CH 3 SH decomposition, the high conversion temperature followed by high energy consumption is still a bottleneck. Herein, the cobalt-doped CeO 2 catalyst was synthesized by a facile one-pot preparation strategy and successfully reduces the decomposition temperature from 450 to 250 °C. Further studies demonstrate that the excellent low-temperature catalytic activity of Co 0.6 Ce 0.4 O 2– σ is attributed to its abundant oxygen vacancies and reactive oxygen species. Oxygen vacancies promote the adsorption and dissociation of CH 3 SH, while reactive oxygen species facilitate the decomposition of CH 3 SH. Moreover, Co acts as a sacrificial agent for the adsorption of sulfur species in CH 3 SH, while Ce is responsible for the adsorption and activation of CH 3 SH as the active metal phase. Furthermore, the migration and transformation mechanism of CH 3 SH on the surface of Co 0.6 Ce 0.4 O 2– σ was determined via in situ diffuse reflectance infrared Fourier transform spectra ( in situ -DRIFTS). This work provides a new strategy to synthesize high-performance catalysts for decomposing sulfur-containing volatile organic compounds (VOCs) at low temperatures, which is beneficial to decreasing the energy consumption.
研究领域:
环境科学
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催化化学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2025
·
IF 7.2
Xiaorui Zhang,Laiqing Zhang,Hanlin Ye,Zikang Zeng,Jian Yang,Chuang Han,Yujun Liang
Metal ions doping has attracted noteworthy attention for tuning the electronic structure of semiconductors. However, high doping content usually leads to the formation of heterophase or impurity. Herein, ultra-high Bi-doped CeO 2 nanorods (doping amount up to 20 mol%) without dopant segregation were fabricated by pyrolyzing Bi/Ce bimetallic-organic frameworks (Bi/Ce-BMOFs), and adaptive oxygen vacancies (OVs) were introduced. The Bi-doped CeO 2 not only retains the unique porous structure of Bi/Ce-BMOFs, thus possessing a large specific surface area, but also significantly enhances the visible-light response and promotes the redox cycling of Ce 3+ /Ce 4+ ion pairs, thereby accelerating the efficient activation of H 2 O 2 . Moreover, the adaptive OVs serve as electron-trapping sites, further facilitating the separation of charge carriers. Consequently, the Bi-doped CeO 2 exhibits an excellent photo-Fenton degradation efficiency of tetracycline (TC) over a broad pH range (pH = 2-9). Mechanistic studies revealed that ·O 2 – and ⋅OH are the dominant reactive species. Additionally, the possible degradation pathways of TC were explored using joint characterizations. The ecotoxicity of intermediate products formed during the degradation process was also assessed. This work demonstrates the great potential of the Bi-CeO 2 heterojunction in antibiotic degradation and risk control, providing a feasible strategy for designing efficient and stable catalyst with heteroatom doping derived from BMOFs.
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DOI
高影响因子
INORGANICA CHIMICA ACTA
·
2024
·
IF 2.7
Dongdu Zhang,Lejing Shen,Wei Mao,Daoyun Zhu,Qiaoyu Zhang,Qing Zu,Ling Tan,Libin Liu,Xiayi Hu,Yangqiang Huang,Hao Chen,Xiao Luo
Dimethyl carbonate (DMC) was synthesized using CO 2 and methanol by different CeO 2 catalysts obtained from functionalized metal–organic precursors. CeO 2 produced from 1,2,4-benzenetricarboxylic acid (BTC) exhibits the greatest catalytic activity. The results of catalyst characterization manifested that the content of oxygen vacancy and Ce 3+ on the surface of the CeO 2 catalysts is affected by different organic ligand. At the same time, the content of Ce 3+ is positively correlated with Hammett’s values. The high catalytic activity of CeO 2 -BTC is due to the highest oxygen vacancy and Ce 3+ content. The solvothermal time and calcination temperature had great influence on the catalytic properties of the CeO 2 catalysts.
研究领域:
材料科学
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环境科学
·
化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Qiangqiang Wu,Hongquan Fu,Chengxiong Dang,Guangxing Yang,Yonghai Cao,Hongjuan Wang,Hao-Fan Wang,Hao Yu
The reverse water–gas shift (RWGS) reaction has been identified as one of the most techno-economically viable strategies for handling with antropogenic CO 2 emissions, but high-efficiency RWGS catalysts are still challenging. Herein, a series of In-modified Ni-based catalysts with variations of the support and the Ni/In ratio were prepared by a simple wet impregnation method. The high activity for RWGS reaction is achieved on the CeO 2 -supported catalysts. The incorporation of In into Ni/CeO 2 catalysts significantly increases CO selectivity. The optimal 10Ni-5In-CeO 2 catalyst shows 97.2 % CO selectivity at CO 2 conversion rate of 52.8 mmol g Ni −1 h −1 for 100 h without obvious deactivation at 350 °C. The oxygen vacancies on CeO 2 and the active *H species on Ni-In intermetallic compounds (IMCs) are responsible for the enhancement of RWGS reaction. This work provides a guidance to high-efficiency catalysts for CO 2 hydrogenation by cooperation between active metal and oxide support.
研究领域:
催化化学
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材料科学
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环境科学
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产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Ziwen Hao,Yabin Li,Yutong Pan,Xiaoyu Han,Qiang Wang,Maoshuai Li,Yue Wang,Xinbin Ma
Interaction between metal species and support affects the structural and electronic properties of metal species, thus changing the catalytic behaviour. This work demonstrates regulation of support size is an effective way to optimise the metal-support interaction over Ni/CeO 2 -cube. Smaller ceria cubes promoted formation of smaller Ni particle sizes with higher dispersion, generating stronger interaction between Ni and CeO 2 , and consequently higher turnover frequency for CO 2 methanation. The interaction in Ni/CeO 2 with the smallest ceria size (average ca. 5 nm) provides stronger CO 2 and H 2 adsorption capacity, facilitating the CO 2 methanation with over 99 % CH 4 selectivity at 548–573 K, delivering a CO 2 conversion rate of 327.9 mol CO2 mol Ni -1 h −1 , which is 1.9 and 14.0 times than that of the 12 nm and 20 nm counterparts at 573 K, respectively. In-situ FTIR spectroscopic analysis demonstrates the surface reaction proceeds via a formate pathway, and smaller CeO 2 -cube supported Ni facilitates conversion of carbonate/bicarbonate intermediates to formate species. The metal-support interaction aroused from controlled support size provides a new way to design high-performance methanation catalyst.
研究领域:
催化化学
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材料科学
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多相催化
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CO2利用
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纳米材料
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Honghong Yi,Kai Chen,Hongkun Ni,Yiming Ma,Xiaolong Tang,Qingjun Yu,Fengyu Gao,Shunzheng Zhao
This study employs a synergistic strategy of Zn doping and KOH etching to precisely regulate the physicochemical properties of CeO 2 , significantly enhancing its H 2 S catalytic oxidation performance. Experimental results indicate that Zn doping induces lattice expansion of CeO 2 , while KOH etching further removes Zn, increases Ce 3+ and oxygen vacancy concentrations, thereby optimizing surface acidity-basicity and redox capability. The obtained E-Zn/CeO 2 material exhibits excellent H 2 S conversion, reaction and kinetics, while promoting the selective formation of SO 2 . Mechanistic studies reveal that H 2 S undergoes adsorption and dissociation via μ 2 -OH/–COOH groups on the material surface, with the oxidation process following the MvK mechanism, where oxygen vacancies play a key role in adsorption and lattice oxygen transfer. Theoretical calculations further demonstrate that the synergistic modification induces reconstruction of the electronic structure of CeO 2 , including weakened covalency of Ce O bonds and a spin-state transition of O 2p orbitals, which significantly reduces the oxygen vacancy formation energy (as low as −1.47 eV) and enhances structural stability. This work provides both experimental and theoretical foundations for the rational design of highly efficient H 2 S catalytic materials.
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DOI
高影响因子
Nanotoxicology
·
2026
·
IF 3.6
Yanting Zhan,Yiyang Wu,Chanting Huang,Siyi Liu,Ke Ma,Li Zheng,Zainen Qin
The high expression of classically activated macrophages (M1) subtypes and the elevated levels of reactive oxygen species (ROS) are specifically observed in osteoarthritis (OA) patients. In this study, we synthesized a Pd@CeO2 nanozyme with a core-shell hetero-nanostructure that enhances enzyme activity through shell-core electron transfer. The goal of this work was to look into the potential of Pd@CeO2 nanozyme in scavenging ROS and regulating macrophages for the treatment of OA. The results demonstrated that the Pd@CeO2 nanozyme displayed multiple enzyme-like antioxidative activities, efficiently eliminating excessive intracellular ROS. This resulted in a significant decrease in the release of pro-inflammatory cytokines, consequently leading to a decline in the presence of M1-type macrophages. Furthermore, the Pd@CeO2 nanozyme showed excellent potential in promoting the shift of macrophages toward the M2 phenotype. Additionally, the factors secreted from the cell supernatant of Pd@CeO2-treated macrophages treated with Pd@CeO2 demonstrated anti-inflammatory properties in the chondrocytes located within inflamed synovial joints. These findings offer valuable insights into the advancement of effective enzyme-mimetic therapies for the treatment of OA.
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DOI
PubMed
高影响因子
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