Small
·
2025
·
IF 12.1
Yanlin Zhang,Changming Zhang,Zheng Zhang,Huakang Zong,Pengwei Tan,Liyang Luo,Yuanyuan Luo,Guotao Duan
In the sensing field, the electronic structure of sensing materials has a great influence on the properties of the sensors. Here, by Ga doping pure rhombohedral In 2 O 3 (h-In 2 O 3 ), the double-phase In 2 O 3 (cubic/rhombohedral In 2 O 3 , c/h-In 2 O 3 ) porous nanospheres are obtained. And then Micro Electromechanical System (MEMS) gas sensors based on monolayer film are further fabricated by self-assembling the above nanospheres. The 5% Ga-doped In 2 O 3 sensors exhibit excellent HCHO sensing performance with a high-response (110.6@100 ppm), rapid response/recovery time (5.2/18.4 s) and low limit of detection (50 ppb) at an operating temperature of 180 °C. The 5% Ga-doped In 2 O 3 sensors also show high consistency (fluctuations of only 8.3%). Besides, a handheld device is developed to enable real-time monitoring and early warning of indoor HCHO at ppb-level. Based on experimental results and DFT theoretical calculation, the enhanced sensing mechanism is revealed, which is correlated with the optimization of electronic band structure by Ga doping and the appearance of double-phase heterostructures caused by Ga doping. Therefore, the relationship between electronic structure and gas sensing properties has also been established. This work significantly introduces a novel approach for the mass production of MEMS gas sensors, ensuring high sensitivity, repeatability and consistency.
研究领域:
材料科学
·
传感器技术
·
环境监测
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DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2025
·
IF 2.4
Shiyuan Wang,Fang Wang,Yalong Song,Zelin Ma,Jiulong Wang,Yazhou Shuang,Weihao Zhao,Jie Jian,Pengfei Guo,Hongqiang Wang
BACKGROUND Carbon dioxide-assisted propane dehydrogenation (CO 2 -ODP) is a promising advanced technology for propylene production. However, a significant challenge still remains in advancing the adsorption and activation of propane and CO 2 , as hydrogenolysis and oligomerization isomerization reactions severely constrain propylene production. RESULTS In this work, we introduce Ga as a second metal promoter into Pt/SiO 2 catalysts, effectively promoting the dispersion of active particles and significantly reducing their size, thereby enhancing their catalytic activity. Meanwhile, the impregnation of Ga also promotes the activation of CO 2 , ultimately accelerating the reverse gas–water shift reaction. CONCLUSION The propylene yield and CO 2 conversion of Pt–Ga 1 /SiO 2 catalyst increased up to 40.45% and 45.10%, respectively, which were 17.54 and 6.62 times higher than those of the pristine SiO 2 –Pt catalyst at weight hourly space velocity (WHSV) = 3.1 h −1 . Most notably, the C 3 H 6 selectivity of SiO 2 –Pt/Ga 1 catalyst remarkably achieved an impressive value of 99.04%, which was much higher than that of other bimetallic-based catalysts, thus providing valuable guidance for the rational development of bimetallic highly active CO 2 -ODP catalysts. © 2025 Society of Chemical Industry (SCI).
研究领域:
化学工程
·
催化科学
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DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Ping Liang,Jianbin Lin,Xiongcong Guan,Jie Wang,Xinxin Zhang,Xin He,Qi Feng,Chi Zhang
Self-supported nanoporous metal foils with precisely engineered architectures are promising for catalysis, sensing, and environmental remediation, yet their scalable fabrication remains challenging. Here, we present a sequence-controlled liquid gallium (Ga)-assisted alloying/dealloying strategy, integrated with thermal evaporation, to construct Ag-modified nanoporous copper (Cu) foils. By varying the Ag deposition sequence, two distinct architectures were obtained: one features Ag 3 Ga intermetallic decorations, while the other forms a continuous Ag network within the nanoporous Cu. Subsequent electrooxidation generates Cu x O nanoneedles as catalytically active sites. The architecture with dispersed Ag 3 Ga yields exceptional non-enzymatic glucose sensing with high sensitivity, low detection limit, and long-term stability. In contrast, the continuous Ag network promotes outstanding photo‑Fenton degradation of organic dyes within minutes and excellent reusability. This work demonstrates a versatile approach to spatially control noble metal distribution in nanoporous Cu foils, enabling multifunctional catalytic systems for biosensing and environmental purification.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yihan Song,Xu Ren,Yue Xiao,Zhihao Xiong,Qi Wang,Bin Liu
The continuous development of the global marine industry has posed significant challenges to sustainable development due to corrosion in marine engineering structures. While rust converters are regarded as cost-effective solutions for corrosion mitigation, existing technological advancements fail to meet the heightened demands of contemporary marine engineering practices. To address these limitations, an MXene–phytic acid–gallic acid (M–P–G) hybrid composite was synthesized by integrating two-dimensional nanomaterial Ti3C2Tx with organic acids (gallic acid and phytic acid). This composite achieved synergistic enhancement in both rust-conversion capability and corrosion inhibition performance. Experimental results demonstrated that the M–P–G composite with a mass fraction of 1.0 wt % formed a dense rust-conversion layer on substrates, significantly improving protective performance. The M–P–G/epoxy (EP) coating exhibited an impedance modulus of 1.51 × 109 Ω cm2, surpassing conventional coatings by 2 orders of magnitude. Furthermore, through density functional theory calculations combined with scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and Fourier transform infrared analyses, a corrosion protection mechanism was proposed. This mechanism elucidated the differential conversion capacities of the organic acids toward diverse corrosion products, providing critical insights for the rational design and evaluation of next-generation rust-conversion and anticorrosion materials.
研究领域:
材料科学
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腐蚀与防护
·
海洋工程
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产品关联
DOI
PubMed
高影响因子
PLANT PHYSIOLOGY AND BIOCHEMISTRY
·
2023
·
IF 6.5
Yunshuai Huang,Jiawei Song,Qixian Hao,Changling Mou,Hongming Wu,Fulin Zhang,Ziyan Zhu,Ping Wang,Tengfei Ma,Kai Fu,Yaping Chen,Thanhliem Nguyen,Shijia Liu,Ling Jiang,Jianmin Wan
Seed dormancy is a critical trait that enhances plant survival by preventing seed germination at the wrong time or under unsuitable conditions. Lack of seed dormancy in rice can lead to pre-harvest sprouting on mother plants leading to reduced yield and seed quality. Although some genes have been identified, knowledge of regulation of seed dormancy is limited. Here, we characterized a weak seed dormancy mutant named weak seed dormancy 1 ( wsd1 ) that showed a higher seed germination percentage than the wild-type following the harvest ripeness. We cloned the WSD1 encoding an aminotransferase protein using a MutMap approach. WSD1 was stably expressed after imbibition and its protein was localized in the endoplasm reticulum. A widely targeted metabolomics assay and amino acid analysis showed that WSD1 had a role in regulating homeostasis of amino acids. PAC treatment and RNA-seq analysis showed that WSD1 regulates seed dormancy by involvement in the GA biosynthesis pathway. GA 1 content and expression of GA biosynthesis-related genes were increased in the wsd1 mutant compared with the wild-type. The wsd1 mutant had reduced sensitivity to ABA. Our overall results indicated that WSD1 regulates seed dormancy by balancing the ABA and GA pathways.
研究领域:
植物学
·
遗传学
·
植物生理学
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DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Keke Hou,Chenjie Lou,Mingxue Tang,Hujun Cao,Laijun Liu,Jungu Xu
Ruddlesden–Popper (RP)-structured materials based on transition metals with a variable valence, such as Fe, Mn, Ni, and so on, have been well documented for their potential of being used as electrodes in solid-oxide fuel cells. However, RP materials with pure or dominant ionic conduction are rare. Here, a series of Zr-based RP materials Sr3Zr2–xMxO7–0.5x (M = Ga, Y, In) with electrical conductivity as high as 3.25 × 10–3 S cm–1 at 900 °C in air was reported, which represents the highest conductivity for the Zr-based RP materials and is comparable to that of the recently reported In-based RP oxide-ion conductors, such as NdBaInO4-based and La2BaIn2O7-based materials. Under low oxygen partial pressure (pO2), the doped samples show pure ionic conducting behaviors without n-type electronic conductivity. The defect formation energies, local structure around the oxygen vacancies, and oxide-ion-conducting mechanism of the acceptor-doped Sr3Zr2O7-based materials were studied for the first time. The results revealed a two-dimensional oxide ion migration characteristic within the perovskite slabs. This work therefore provides a good reference for developing new oxide-ion conductors in the Zr-based RP-structured materials.
研究领域:
材料科学
·
固体离子学
·
能源材料
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陶瓷材料
·
燃料电池
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DOI
高影响因子
Laser & Photonics Reviews
·
2024
·Vol. 19
·期 2
·2401248
·
IF 9.8
Zhan Xiong,Gaochao Liu,Weibin Chen,Zhiguo Xia
High-power broadband near-infrared (NIR) light sources have received extensive attention in long-distance night vision lighting, non-invasive detection and imaging, and quantitative analysis of organic components. However, developing targeted NIR-emitting phosphors with high external quantum efficiency (EQE) and thermal stability remains a challenge to raise the NIR output power and expand the applications. Herein, Ga 1.98− x Sc x O 3 :0.02Cr 3+ luminescent ceramics are prepared with redshifted emission peaks from 710 to 820 nm depending on the weakened crystal field. The optimized Ga 1.18 Sc 0.8 O 3 :0.02Cr 3+ ceramic exhibits a high EQE of 79.6% and excellent thermal stability ( I 423 K / I 298 K = 72%) under 468 nm excitation, which brings a saturation threshold up to 893 mW@3 W mm −2 under 450 nm laser pumping. The high-power laser-driven broadband NIR light source demonstrates potential in non-invasive detection and quantitative analysis of alcohol concentration. This study opens up new avenues for the exploration of high-power broadband NIR light sources.
研究领域:
光学材料
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光子学
·
固态照明
·
生物医学成像
·
传感器与检测
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DOI
高影响因子
ACS Catalysis
·
2018
·
IF 11.384
Pan Gao,Jun Xu,Guodong Qi,Chao Wang,Qiang Wang,Yanxi Zhao,Yuhua Zhang,Ningdong Feng,Xingling Zhao,Jinlin Li,Feng Deng
The methanol-to-aromatics (MTA) reaction was investigated on Ga-modified ZSM-5 zeolites (Ga/ZSM-5). As revealed by 71Ga and 1H solid-state NMR and FT-IR of pyridine adsorption measurements, cationic Ga species are formed as Lewis acid sites by substitution of Brønsted acid sites on H-ZSM-5. Further experimental studies show that C5- and C6-cycloalkenes are generated during the MTA reaction, which lead to the formation of cyclic carbocations as precursors to aromatics. Isotope exchange experiments demonstrate that the reactivity of the cyclic carbocations on Ga/ZSM-5 is much higher than that on H-ZSM-5 and they play an intermediate role in the formation of aromatics. In addition to the traditional bimolecular hydrogen transfer (HT) reaction, the dehydrogenation of alkenes with the release of H2 (DeaH2 process) was identified to significantly contribute to the formation of aromatics. The transformation of cycloalkenes to aromatics is favored by promotion of the DeaH2 process and competes with the HT route on Ga/ZSM-5, while these cycloalkenes tend to crack back to alkenes, and the dominating HT route results in lower aromatic selectivity on H-ZSM-5. A DeaH2-aromatization route mediated by the cooperation of cationic Ga species and Brønsted acid sites was proposed for the enhanced formation of aromatics on Ga/ZSM-5 zeolite.
研究领域:
催化化学
·
材料化学
·
石油化学
·
物理化学
·
分子筛科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Henan Zhang,Qi Liu,Alena Novoselova,Valeri Smolenski,Jing Yu,Jingyuan Liu,Yongde Yan,Milin Zhang,Jun Wang
The efficient separation of the rare earth element Sm from spent nuclear fuel is of strategic importance for the nuclear industries. This study explored the feasibility of a novel liquid Ga-Pb hybrid electrode for electrochemical extraction of samarium compounds, and the electrochemical reduction mechanism and dynamic properties of Sm(III) ions were provided in NaCl-2CsCl molten salt. It was established that the reduction mechanisms of Sm(III) to Sm(II) and Pb(II) to Pb(0) on the Mo cathode were a one-step reaction processes, respectively, while Ga(III) to Ga(0) was a two-step reaction process. The co-deposition mechanisms of Sm(III), Ga(III) and Pb(II) ions on the Mo cathode were identified, and the types of intermetallic compounds, formation potentials and reaction processes were analyzed. The deposition potential of Sm on Ga-Pb mixed cathode is determined, and the value of its depolarization was greater than on the liquid Pb electrode. Simultaneously, Sm ions have higher exchange current densities and lower activation energies for electrode reactions on the liquid Ga-Pb mixed electrodes than on the liquid Pb electrodes. Furthermore, the electro-separation of NaCl-2CsCl-SmCl 3 molten salt was executed via potentiostatic electrolysis technique, and the separation efficiency and the effect of cathode product type were analyzed and compared in Ga-Pb hybrid electrode and Pb electrode. It was obtained that the maximum extraction efficiency on the Ga-Pb hybrid electrode and the separation efficiency of Sm could reach 91.3 % after 8 h of electrolysis.
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DOI
高影响因子
Small
·
2023
·Vol. 20
·期 3
·2306459
·
IF 13.3
Shuoxing Yang,Hongping Wu,Zhanggui Hu,Jiyang Wang,Yicheng Wu,Hongwei Yu
Nonlinear optical (NLO) crystals are indispensable for the solid-state lasers for their ability to expand wavelength spectral to the regions where the directing lasing is difficult or even impossible, yet the rational design of a high-performance NLO crystal remains a great challenge owing to the severe structural and properties’ requirements. Herein, a new noncentrosymmetric (NCS) and polar gallium iodate, LiGa(IO 3 ) 4 , with a novel 2D anionic layer, is successfully designed and synthesized by the aliovalent substitution strategy based on classic α-LiIO 3 . The 2D [Ga(IO 3 ) 4 ] ∞ − layer in LiGa(IO 3 ) 4 is built from the GaO 6 octahedra and highly polarizable units IO 3 . Compared with its parent compound, the partial replacement of A-site Li + cation with main group Ga 3+ cation facilitates LiGa(IO 3 ) 4 to possess excellent NLO properties, including the large second-harmonic generation (SHG) response (14 × KH 2 PO 4 (KDP) @ 1064 nm), wide bandgap (4.25 eV), large birefringence (0.23 @ 1064 nm), and wide optical transparency from UV to mid-IR. These reveal that LiGa(IO 3 ) 4 will be a promising NLO crystal.
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产品关联
DOI
PubMed
高影响因子
Catalysts
·
2023
·Vol. 13
·期 4
·673
·
IF 3.9
Jinghu Zhu,Hui Liu,Xueyan Zhou,Zhijun Wang,Liancheng Bing,Dezhi Han,Guangjian Wang,Fang Wang
Cu-based catalysts, modified by gallium addition via the stepwise co-precipitation method, were studied for the liquid phase hydrogenation of hydroxypivalaldehyde (HPA) to neopentyl glycol (NPG). Through physico-chemical techniques, the effects of gallium introduction on the Cu trimetallic catalyst performance and the reaction mechanism of HPA hydrogenation were discussed. The characterization results showed that gallium introduction can influence the dispersion, reduction, and distribution of active Cu species, as well as their reactivity. Herein, the catalyst with 2 wt% gallium addition exhibited excellent catalytic performance with HPA conversion rate and NPG selectivity of 93.5% and 95.5%, at a reaction pressure of 3 MPa, temperature of 110 °C, hydrogen-aldehyde ratio (molar ratio) 10:1, and liquid space-time at a speed of 8.4 h−1. The good performance could be attributed to gallium doping tending to dynamically tune the interaction between the components, increasing Cu dispersion and the distributions of Cu+and Cu0species on the catalyst surfaces.Keywords:HPA hydrogenation;NPG synthesis;Cu-based catalyst;gallium modification;Cu+/Cu0
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高影响因子
Catalysts
·
2019
·Vol. 9
·期 3
·218
·
IF 3.444
Shaoxia Guo,Guilong Liu,Tong Han,Ziyang Zhang,Yuan Liu
Owing to the outstanding catalytic performance for higher alcohol synthesis, Ga-Co catalysts have attracted much attention. In view of their unsatisfactory stability and alcohol selectivity, herein, K-modulated Co nanoparticles trapped in La-Ga-O catalysts were prepared by the reduction of La1−xKxCo0.65Ga0.35O3perovskite precursor. Benefiting from the atomic dispersion of all the elements in the precursor, during the reduction of La1−xKxCo0.65Ga0.35O3, Co nanoparticles could be confined into the K-modified La-Ga-O composite oxides, and the confinement of La-Ga-O could improve the anti-sintering performance of Co nanoparticles. In addition, the addition of K modulated parts of La-Ga-O into La2O3, which ameliorated the anti-carbon deposition performance. Finally, the addition of K increased the dispersion of cobalt and provided more electron donors to metallic Co, resulting in a high activity and superior selectivity to higher alcohols. Benefiting from the above characteristics, the catalyst possesses excellent activity, good selectivity, and superior stability.Keywords:perovskite-type oxide (PTO);cobalt;gallium;potassium;higher alcohols;syngas
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DOI
高影响因子
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