ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Yunyun Li,Yuwei Zhang,Yihao Du,Yantu Zhang
Background Volatile organic compounds (VOCs) represent a major environmental concern due to their detrimental effects on atmospheric quality and public health. In response to this challenge, cataluminescence (CTL)-based sensing has emerged as a powerful analytical technique. This research focuses on engineering advanced CTL sensors through nanomaterial innovation, specifically the development of cerium oxide-based nanocomposites for enhanced VOC monitoring. The exceptional catalytic properties and rare-earth electronic effects of CeO 2 make it an ideal candidate for improving sensor performance. The work addresses a critical need for efficient VOC sensors by leveraging nanomaterial engineering to enhance CTL-based sensing platforms. Results The CeO 2 /M x O y nanocomposites (including CeO 2 /ZnO and CeO 2 /Sm 2 O 3 ) were successfully synthesized via a facile solvothermal method and systematically characterized using PXRD, FT-IR, SEM, and XPS. The CeO 2 incorporation significantly enhanced CTL responses compared to pure M x O y , due to cerium's exceptional catalytic activity and enhanced electron transfer. The optimized CeO 2 /ZnO system (λ = 440 nm, 300 °C, 270 mL min −1 ) demonstrated excellent linear response to diethyl ether with a remarkable detection limit of 6.29 × 10 −5 mol L −1 , while CeO 2 /Sm 2 O 3 (λ = 490 nm, 320 °C, 360 mL min −1 ) showed comparable performance for acetone detection. Both systems exhibited outstanding selectivity against over ten common VOC interferents and maintained stable responses through 11 operational cycles. Spike-recovery tests yielded satisfactory results (93–106 % recovery) with good precision (RSD 4.3–6.2 %), confirming the method's potential for environmental monitoring. Significance This study develops an innovative solvothermal approach for synthesizing CeO 2 /M x O y nanocomposites, significantly advancing CTL-based VOC detection through simultaneous improvements in selectivity, sensitivity, and operational stability. The established methodology offers a scalable platform for developing advanced gas sensors for environmental monitoring and industrial safety. By overcoming critical challenges in VOC sensing, this research facilitates the translation of CTL technology from laboratory research to practical air quality management.
研究领域:
环境科学
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纳米技术
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分析化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Guijuan Wei,Xixia Zhao,Kun Du,Zhaojie Wang,Ming Liu,Shuo Zhang,Shutao Wang,Jun Zhang,Changhua An
To date, zero-dimensional carbon quantum dots (CQDs), as a new carbon nanomaterials, have attracted attention in the improvement of the electrical conductivity for electrode materials. However, few attempts have been made to the use of CQDs as the structure-directing agent for the assembly of functional micro/nanoelectrodes. Herein, we have developed a general, and simple strategy to fabricate 3D porous hierarchical carbon quantum dots (CQDs)/M x O y (M = Co, Ni) composite nanostructures from thermolysis of corresponding CQDs/M(OH) y , where CQDs play crucial role as a structure-directing agent in tuning the morphologies of the M(OH) y . With the merits of the large electroactive surface area, superior electronic conductivity of CQDs, and fruitful porous structure, the as-fabricated battery-type electrode materials present amazing supercapacitor performance. For example, the as-made porous hierarchical CQDs/Co 3 O 4 nanoarchitectures exhibited remarkable electrochemical performance with 1603 F g −1 at 1 A g −1 , excellent rate capacity of 70.6% from 1 to 100 A g −1 , superior cycling ability (97.0% capacity remained after 2000 cycles). Furthermore, the CQDs/Co 3 O 4 //AC hybrid supercapacitor (HSC) exhibits a high specific capacity of 210.4 F g −1 with 74.8 W h kg −1 . The present work can be enlarged for the design of other functional 3D hierarchical micro-nanostructures in the fields of energy storage, catalysis, and photo/electrocatalysis.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Lulu Wang,Beiyue Ma,Xinming Ren,Chao Yu,Chengji Deng,Chunming Liu,Chuanbo Hu
In an attempt to enhance the sintering and mechanical performance of porous cordierite ceramics (Mg 2 Al 4 Si 5 O 18 ) as support materials for vehicle exhaust catalysts, ZrO 2 and M x O y (M = La, Ce, and Nb) were simultaneously introduced into cordierite sintered at 1350 °C for 4 h. Then, the reinforced function of ZrO 2 and M x O y on the properties of porous cordierite ceramics was systematically evaluated, especially for the sample co-doped with ZrO 2 and La 2 O 3 . The results displayed a distinct enhancement in mechanical and thermal performance, and the cold compressive strength increased from 72.74 to 158.59 MPa as well as thermal conductivity ranged from 1.66 to 2.01 W m −1 K −1 , respectively. It is found that ZrO 2 facilitated activation sintering introduced via lattice distortion in cordierite and La 2 O 3 accelerated the formation of cordierite and ZrSiO 4 microcrystalline through the low-temperature liquid phase. The synergic effect between ZrO 2 and La 2 O 3 , therefore, had a significant role in the reinforced mechanical and thermal performance of porous cordierite ceramics. This work not only offers a feasible strengthening strategy, but also expands the possibilities for building high-performance structural and functional ceramics .
研究领域:
材料科学
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陶瓷工程
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汽车工程
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2018
·
IF 3.141
Donglin He,Changlei Qin,Zonghao Zhang,Shuai Pi,Jingyu Ran,Ge Pu
The control of anthropogenic CO2 emissions has attracted worldwide attention because of global warming. Among diverse carbon capture technologies, calcium looping (CaL) is proposed as a favorable approach for postcombustion CO2 mitigation. However, the sorbents’ capacitive loss with increased CaL cycling has severely limited the efficient application of the method. Therefore, obtaining sintering-resistant Ca-based sorbents with high capture capacity, fast capture kinetics, and superior stability is considered a research priority. Here, we reported our latest work on the development of a novel Y2O3/MxOy-modified Ca-based sorbent with superior CO2 sorption performance. Y20/Mg20, i.e., synthetic Ca-based sorbents with Y and Mg incorporated at the mass ratio of 1:1, achieved a significantly high conversion (above 90%) in 20 CaL cycles at a typical calcination temperature (∼900 °C) and was stabilized at the CO2 uptake of 0.311 g of CO2/g of sorbent even after 122 CaL cycles. A comprehensive investigation revealed that the outstanding performance arose from the characteristics of (1) superior surface area and pore volume, provided by pores with radii of <20 nm, (2) a gradually formed skeleton-type structure, and (3) a porous internal structure with a homogeneous distribution of Y2O3 and MgO nanoparticles.
研究领域:
环境科学
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化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2013
·
IF 4.814
Xiangdong Wang,Hongbo Yu,Dayin Hua,Shenghu Zhou
PtM (M = Ni, Fe, Co) alloy nanoparticles were synthesized by a liquid phase reduction method employing butyllithium as a reducing agent. The alumina-supported PtM materials were then used as precursors to obtain the Pt-MxOy/Al2O3 catalysts through calcination. The influence of synthesis conditions of PtM alloy nanoparticles and the catalytic performance of the Pt-MxOy/Al2O3 catalysts for p-chloronitrobenzene hydrogenation reaction were investigated. The relevant characterizations such as XRD, XPS, and TEM were conducted for PtM alloy nanoparticles and Pt-MxOy/Al2O3 catalysts, and the result showed that the PtM nanoparticles are uniform alloy. Moreover, compared to PtM alloy nanoparticles, the Pt particle size of Pt-MxOy/Al2O3 using PtM alloy nanoparticle precursors did not increase by calcination, indicating good thermal stability. The catalytic activities of Pt-MxOy/Al2O3 for p-chloronitrobenzene hydrogenation reaction were significantly higher than that of control Pt/Al2O3 catalysts due to its strong Pt-MxOy interaction.
研究领域:
化学工程
·
催化材料科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2026
·
IF 4.9
Yutong Hong,Shouxiang Gao,Yingke Zhu,Miaojun Xu,Yan Xia,Juan Li
Overcoming the inherent flammability of epoxy resins while achieving a well-balanced combination of properties is an urgent requirement for the development of multifunctional epoxy materials. In this study, metal oxide nanoparticles (M x O y ), including Fe 3 O 4 , CoO, and MnO, were assembled onto piperazine pyrophosphate (PAPP) via ultrasound-assisted interfacial self-assembly to construct core-satellite-structured hybrid fillers, denoted as PAPP@M x O y . The integrated suprastructure and nanoparticle-decorated surface improved the dispersion of PAPP in the EP matrix while promoting catalytic char formation, thereby endowing the resulting EP composites with enhanced comprehensive performance. With only 9 wt% PAPP@M x O y , the EP composites achieved a UL-94 V-0 rating and a limiting oxygen index (LOI) of up to 35.8 vol%. Compared with neat EP, the peak heat release rate (pHRR), total heat release (THR), and total smoke release (TSR) were reduced by 61.5%, 29.7%, and 49.6%, respectively. A systematic comparison further revealed that Fe 3 O 4 -decorated PAPP exhibited a relatively balanced overall fire-safety performance among the single- and dual-metal-oxide-decorated counterparts, with simultaneous improvements in heat-release suppression and smoke reduction. In addition, compared with EP composites containing pristine PAPP, the PAPP@M x O y -filled systems exhibited improved tensile, flexural, and impact strengths, indicating that surface-assembly modification effectively mitigated the mechanical deterioration commonly caused by flame-retardant fillers. This work presents an efficient and versatile surface-assembly strategy for constructing high-performance flame-retardant fillers and offers a practical route toward simultaneously improving the fire safety and mechanical properties of EP composites.
✓ 已验证
产品关联
DOI
高影响因子
WATER RESEARCH
·
2025
·
IF 12.4
Kaiyu Fang,Yang Tong,Yuting Zhu,Guodong Yao,Xu Zeng,Yecheng Xue,Yangyuan Zhou,Jianfu Zhao,Siqing Xia
The residual liquid phase after wet air oxidation of sludge has long been recognized as a potential carbon source due to its richness in volatile fatty acids (VFAs). However, nitrogen inevitably accumulates in the form of ammonia during the process, undermining the goal of adding a carbon source to aid bioreactors in nitrogen removal. To address this issue, different N/M x O y catalysts were synthesized with noble metal (N=Ru, Pt, Pd) and metal oxide supports (M x O y =Al 2 O 3 , TiO 2 , CeO 2 , ZrO 2 ). The entire process comprised the liquefaction of sludge and the subsequent refining of oxidation liquid. The performance of these catalysts was compared using various parameters, including total nitrogen (TN) removal, practical carbon source (PCS) production, and volatile fatty acids (VFAs) production, to ensure both the quantity and quality of the carbon source. Ru/TiO 2 was found to be the best catalyst, achieving a TN removal rate of 94.6% and a PCS concentration of 2760 mg/L under optimized reaction conditions of 260°C, 1.5 MPa O 2 , 4.0 h, an initial pH of 7.1, and the addition of 3.0 g/L vacuum-dried catalyst. In general, 110.1 g COD carbon source could be produced per kg dry sludge. The reusability of the catalyst was examined, and PCS only decreased 4.7% after four cycles of usage. The change in other dissolved organic matter was also investigated, with CHON and CHO molecules, as well as lignins and condensed hydrocarbons, being considered the dominant components. This study offers a viable approach for the resource utilization of municipal sludge.
研究领域:
环境科学
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
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2014
·
IF 3.679
Sheng-jie Xia,Xiao-bo Zhou,Wei Shi,Guo-xiang Pan,Zhe-ming Ni
Three transition metal oxides (Fe 3 O 4 , CeO 2 and SnO 2 ) modified Zn/Ti–layered double hydroxides (LDHs) were successfully synthesized. These materials were characterized by powder X-ray diffraction (XRD), inductively coupled plasma atomic emission spectrometry (ICP-AES), Brunauer–Emmett–Teller (BET) and UV–vis diffuse reflectance spectrum (UV–vis) for the purpose of confirming the formation of good crystal structure. Comparing with original layered double hydroxides, the transition metal oxides modified Zn/Ti layered double hydroxide materials show narrower band gap, larger surface area, smaller pore volume, pore size distribution, and higher removal efficiency for acid red 14 under visible light. The decomposition efficiency of acid red 14 was all over 92% after 120 min. In addition, the thermal regeneration for re-use of layered double hydroxide materials after photodegradation was feasible for at least four cycles (degradation amount still all over 80%). Furthermore, the kinetic parameters, intermediates and possible photocatalytic pathways for acid red 14 decomposed by these transition metal oxides modified Zn/Ti layered double hydroxide materials were also investigated carefully.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2015
·Vol. 17
·期 40
·26690-26702
·
IF 4.493
Shengjie Xia,Mengmeng Shao,Xiaobo Zhou,Guoxiang Pan,Zheming Ni
A series of novel organic–inorganic nanoscale layered materials were synthesized by intercalating the Ti-containing Schiff base complex into the interlayer of the ZnM layered double hydroxides (LDHs, M = Al, Cr, Fe, Ce). The hybrid material was further calcined to make metal oxide composites with highly dispersed Ti elements (Ti/ZnO–MxOy). The structural characterization and photocatalytic results showed that, after intercalation and calcination, the metal oxide composites with a unique flower-like crystal morphology not only had high specific surface area, uniform pore size distribution and narrow band gap, but also showed extremely high photocatalytic performance for hexachlorobenzene (HCB) degradation. The Ti/ZnO–Cr2O3 composite with the narrowest band gap (2.40 eV) and the highest surface area (227 m2) showed the highest photocatalytic performance for HCB (95.5% within 240 min) among the four metal oxide composites. Particularly, it was found that composites derived from layered materials with different supramolecular structure of the host and guest showed different photocatalytic properties. In addition, based on the results from ESR, GC-MS and HPLC-MS, the type and amount of hydroxyl radicals, the decomposition intermediates and the pathway of HCB degradation photocatalyzed by Ti/ZnO–MxOy composites are also discussed in detail.
研究领域:
材料化学
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环境科学
·
纳米科技
·
光催化
·
无机化学
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表面科学
·
污染物降解
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 45
·22708-22715
·
IF 7.443
Chunxiao Lv,Xianfeng Yang,Ahmad Umar,Yanzhi Xia,Yi(Alec) Jia,Lu Shang,Tierui Zhang,Dongjiang Yang
The increasing demand for high performance lithium ion batteries (LIBs) has aroused great interest in developing high specific capacity, cycle performance and rate capability anode materials. Transition metal oxides (TMOs) have attracted much attention as promising anode materials for rechargeable LIBs owing to their high theoretical capacity. Here, a general strategy has been developed to fabricate high-performance fibrous TMO anodes such as elemental Ni doped NiO fibre (NiO/Ni/C-F), yolk–shell structured carbon@Fe2O3 fibre (C@Fe2O3-F), and hollow CuO fibre (CuO-HF) with controllable nanostructures by using alginate microfibres as templates. The key to the formation of various TMO micro-/nano-structures is the templating ability of the natural structure of long alginate molecular chains, where the metal cations can be confined in an “egg-box” via coordination with negatively charged α-L-guluronate blocks. When tested as anode materials for LIB half cells, these fibrous electrodes deliver excellent cycling performance with no capacity decrease after 200 cycles (793 mA h g−1, NiO/Ni/C-F, 0.072 A g−1; 1035 mA h g−1, C@Fe2O3-F, 0.1 A g−1; 670 mA h g−1, CuO-HF, 0.067 A g−1), and demonstrate great rate performance at different current densities. This finding highlights a general, green and eco-friendly strategy for the scale-up production of potential high-performance TMO anodes for LIBs.
研究领域:
材料科学
·
能源技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2025
·
IF 7.7
Yi Lin,Zaixing Wang,Lina Tang,Shi Jiang,Yu Guo,Xiaoqin Liu
Ni-based catalysts supported on composite metal oxides (NiO-Al 2 O 3 , MgO-Al 2 O 3 , Co 3 O 4 -Al 2 O 3 ) were synthesized via coprecipitation followed by Ni impregnation to investigate the influence of support composition on catalyst stability in methane steam reforming. Accelerated deactivation protocols (methane decomposition, high-temperature sintering, hydrothermal oxidation) revealed hydrothermal oxidation as the primary cause of irreversible deactivation. The 10Ni/NiAl catalyst (10 wt% Ni/10 wt% NiO-Al 2 O 3 ) showed remarkable regenerability after 923 K hydrothermal treatment, fully restoring its activity. This was attributed to coexisting reduced Ni species and readily reducible NiO, facilitating rapid reactivation. Other catalysts formed thermally stable NiAl 2 O 4 , leading to permanent deactivation. Methane cracking at 973 K had negligible effect, and 10Ni/NiAl catalyst exhibited the lowest carbon deposition (17.02 %). Under extreme hydrogen purged at 1223 K, only the 10Ni/CoAl catalyst exhibited a minor activity decline. The superior stability of 10Ni/NiAl was attributed to an in situ-formed NiAl composite metal oxides during 973 K calcination, which effectively anchored Ni particles, suppressed sintering, and prevented extensive oxidation.
研究领域:
催化
·
化学工程
·
材料科学
·
能量转换
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Wen Li,Kuncan Wang,Junjie Huang,Xiao Liu,Dun Fu,Jiale Huang,Qingbiao Li,Guowu Zhan
Metal–organic frameworks have been exploited as excellent solid precursors and templates for the preparation integrated nanocatalysts with multicomponent and hierarchical structures. Herein, a novel synthetic protocol has been developed to fabricate versatile Zr-based solid solutions (such as ZnO–ZrO2, Co3O4–ZrO2, and CuO–ZrO2) via pyrolysis of Schiff base-modified UiO-66 octahedrons (size <100 nm), which were then utilized as efficient catalysts for CO2 hydrogenation. The Schiff base serves as an effective bridge to dope secondary metal ions into UiO-66 frameworks with controlled amounts of 0.13–8.8 wt %, which are initially hard to achieve. Interestingly, by simply changing the loading metal ions, the selectivity of C1 hydrogenation products can be facilely tuned. For instance, the maximum CO2 conversion of ZnO–ZrO2, Co3O4–ZrO2, and CuO–ZrO2 solid solutions were 5.8, 11.4, and 22.5%, with the main product selectivity of 70% CH3OH, 92.5% CH4, and 86.7% CO, respectively. Moreover, in situ diffuse reflectance infrared Fourier transform spectra characterization reveals that the significant difference in C1 product selectivity is mainly determined by the balance of *HCOO, *CH3O, and *CO intermediate species over the Zr-based solid solutions.
研究领域:
催化化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）