APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
·
IF 21.1
Jiabing Geng,Yafang Luo,Jiale Song,Hongjie Yu,You Xu,Hongjing Wang,Kai Deng,Ziqiang Wang,Liang Wang
Electrocatalytic reforming of polyethylene terephthalate (PET)-derived ethylene glycol (EG) into high-value glycolic acid (GA) is a potential strategy for PET plastic upcycling, and the efficiency mainly depends on the identification of high-performance electrocatalysts. In this study, we synthesize Ga-incorporated PdCu metallene (GaO x -PdCuene) with an oxygen-bridge structure (GaO x -PdCuene) for the electrolysis of PET hydrolysate towards GA production. GaO x -PdCuene demonstrates an impressive Faradaic efficiency of 98.72 % for GA production at a potential of 0.9 V, along with stable operation for over 100 h. The experimental and theoretical analyses show that the Ga-induced oxygen-bridge structure, accompanying with p-d orbital hybridization, efficiently regulates electronic structure of Pd, which effectively facilitates *OH species generation and optimizes adsorption energies of intermediates on Pd active sites, leading to high activity and selectivity for GA generation. The work highlights the design of oxygen-bridge structure in Pd-based electrocatalysts for efficient conversion of PET wastes to high-value GA product.
研究领域:
材料化学
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环境催化
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可持续能源
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高分子化学
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电化学
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纳米材料
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绿色化学
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产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Zhang Shipeng,Li Zhen,Li Menggang,Gu Yu,Han Ying,Zeng Ruijin,Tao Lu,Liu Youxing,Ye Na,Han Xiaocang,Luo Mingchuan,Zhao Xiaoxu,Yu Yan,Guo Shaojun,Zhang Jin
Dual-atom catalysts are a class of important catalytic systems for accelerating the kinetics of solid-phase conversion of K 2 S 2 to K 2 S in potassium-sulfur battery cathodes, yet their uncontrolled metal-metal interactions greatly limit their catalytic capability, leading to low conversion efficiency of potassium-sulfur batteries. Herein, we report the precise synthesis of Ga-Cd dual-atom catalysts with strong orbital electron coupling of p -block Ga and d -block Cd, anchored on hollow mesoporous carbon spheres (Ga-Cd DAs-HMCS) for boosting the performance of potassium-sulfur batteries. Ga shows strong adsorption capacity for potassium polysulfides, but lacks sufficient valence electrons to promote their conversion. We demonstrate that the introduction of Cd with a more filled valence electron configuration enables the transfer of electrons into the empty orbitals of Ga via strong orbital electron coupling, which enhances the catalytic ability of the Ga site to activate the S-S bond in potassium-sulfur chemistry, and thus accelerates the conversion kinetics from K 2 S 2 to K 2 S. This enables a S/Ga-Cd DAs-HMCS cathode material with an improved rate performance up to 589 mAh g −1 at 5 A g −1 .
研究领域:
电化学
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材料科学
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能源化学
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纳米催化
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电化学储能
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2026
·
IF 4.7
Yuguo Feng,Caikang Wang,Xueting Wang,Zhijuan Li,Liang Liu,Zihan Zhou,Zhe Xu,Xuanxiao Zhu,Meng Li,Dongmei Sun,Yawen Tang
The development of highly active and durable electrocatalysts for the alkaline hydrogen evolution reaction (HER) is essential for advancing sustainable hydrogen production through anion exchange membrane water electrolysis (AEMWE). In this work, we report the one-pot solvothermal synthesis of Ga-doped Ru nanosheets (RuGa NSs) as a high-performance alkaline HER catalyst, where Ga incorporation is shown to optimize the interfacial water structure to enhance catalytic activity. The optimized RuGa NSs exhibit outstanding alkaline HER performance, requiring a low overpotential of only 18 mV at 10 mA cm–2, coupled with a small Tafel slope of 37.2 mV dec–1. When integrated into an AEMWE device, the RuGa NSs||NiFe-LDH-based AEMWE enables a low cell voltage of 1.74 V to deliver 1.0 A cm–2 in 1.0 M KOH at 60 °C. Moreover, the AEMWE device shows exceptional long-term stability, operating continuously for 200 h at 0.5 A cm–2 with a minimal voltage decay of 5.5%. Operando Raman spectroscopy results demonstrate that Ga doping promotes the dynamic transformation of rigid, hydrogen-bonded water into more mobile free-water molecules. This restructuring creates a favorable local reaction environment by increasing the flexibility of the hydrogen-bond network, thereby facilitating water dissociation and proton transfer.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2018
·
IF 2.732
Bin Ma,Ke Su,Qianxin Zhang,Yunping Shi,Bowen Xiong,Xiaoqin Ma
Novel Sr 9 R(PO 4 ) 7 (R = In, Ga) host materials for Eu 3+ - doped phosphors were synthesized by a high-temperature solid-state reaction method. The crystal structure, luminescence properties and thermal stability of the phosphors were explored. The phase analysis indicated that the phosphors crystallized in monoclinic structure, the emission spectra of both In and Ga containing phosphors were mainly composed of two sharp peaks centered at about 591 and 617 nm, corresponding to the 5 D 0 → 7 F 1 and 5 D 0 → 7 F 2 transitions of Eu 3+ ions. While, the relative emission and excitation intensities of Sr 9 In(PO 4 ) 7 : Eu 3+ were weaker than Sr 9 Ga(PO 4 ) 7 : Eu 3+ . Moreover, the energy transfer mechanism among Eu 3+ ions in the phosphors depended upon energy transfer among the nearest-neighbor ions described by the Dexter theory. The selected Sr 9 In(PO 4 ) 7 : 0.06Eu 3+ and Sr 9 Ga(PO 4 ) 7 : 0.06Eu 3+ exhibited high thermal stability and the chromaticity coordinate of the phosphors were located in the red-orange light region.
研究领域:
材料科学
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发光材料
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固态化学
·
光学物理
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DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2023
·
IF 3.6
Liwei Zeng,Jiyou Zhong,Hongyao Liu,Weiren Zhao
Herein, we report a series of tunable and highly efficient Ga 1.594-2 x Sc 0.4 Mg x Ge x O 3 :0.006Cr 3+ phosphors via regulating the crystal field environment in (Ga,Sc) 2 O 3 :Cr 3+ system. This material exhibits a gradual red-shift of the emission spectra from 784 to 814 nm, and a spectral broadening with FWHM increased from 138 nm to 169 nm as the increase of x value. However, the position of excitation peak has almost no variations in the blue light region, enabling it to be perfectly matched with blue LED chip. Upon 450 nm excitation, the IQE remains above 90% when x ≤ 0.08 (784 ≤λ em ≤ 803 nm); while the thermal stability decreases as the increase of x in the whole range. Finally, a prototype NIR pc-LED was fabricated via combining Ga 1. 35 4 Sc 0.4 Mg 0.12 Ge 0.12 O 3 :Cr 3+ phosphor with 450 nm blue LED chip, which shows an excellent NIR output power of 26.91 mW with high photoelectronic conversion efficiency of 9.70% under a driving current of 100 mA. Thus, this work provided a series of efficient NIR phosphors through local structure regulation, which may have great potential for spectroscopy application.
研究领域:
材料科学
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光学材料
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固态照明
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荧光粉化学
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发光学
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DOI
高影响因子
SENSORS
·
2017
·Vol. 17
·期 6
·1203
·
IF 2.677
Hongxiang Chen,Wei Jiang,Lianfeng Zhu,Youwei Yao
Amorphous indium gallium zinc oxide (a-IGZO) powder was prepared by typical solution-based process and post-annealing process. The sample was used as sensor for detecting C2H5OH, H2, and CO. Gas-sensing performance was found to be highly sensitive to C2H5OH gas in a wide range of concentration (0.5–1250 ppm) with the response of 2.0 towards 0.5 ppm and 89.2 towards 1250 ppm. Obvious difference of response towards C2H5OH, H2, and CO was found that the response e.g., was 33.20, 6.64, and 2.84 respectively at the concentration of 200 ppm. The response time and recovery time of was 32 s and 14 s respectively towards 200 ppm concentration of C2H5OH gas under heating voltage of 6.5 V.
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DOI
高影响因子
Advanced Optical Materials
·
2026
·
IF 7.2
Wanling Mao,Siyong Wang,Li Zhang,Yujia Luo,Yuyao Feng,Yunhai Xiong,Yixuan He,Yuhui Dong,Yousheng Zou,Haibo Zeng
Low-toxicity quantum dots (QDs) based on group I-III-VI elements have attracted significant interest due to their color-tunability for wide-gamut displays. Nevertheless, the width of the blue-emitting peak remains considerably broader than those of the green and red counterparts, resulting in degraded color purity, restricted gamut coverage, and diminished energy efficiency in blue-emitting devices. Here, we report spectroscopically pure blue QDs (λ = 465 nm) with an ultranarrow FWHM of 36 nm, achieving excellent color purity for blue-emitting I-III-VI QDs. Employing a two-step hot-injection method with precise thickness control, this approach enables epitaxial growth of an atomically thin 0.35 nm thick AgGaS 2 (AGS) shell on Ag-In-Zn-Ga-S cores. Using in situ HRTEM on systematically synthesized AIZGS@AGS architectures, we directly captured the controlled epitaxial growth of this shell, revealing a clean core–shell interface. The high-crystallinity AGS shell passivates surface defects, narrowing the PL spectrum from 103 to 36 nm. Moreover, systematic In:Zn ratio tuning further affords AIZGS@AGS QDs that exhibit narrow linewidths and continuous spectral coverage across the blue region (465–509 nm). Our study provides an effective approach for high-quality I-III-VI blue QDs, demonstrating significant potential for advanced display applications.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Mingyue Wang,Xiaohua Jia,Xiaoyu Zhang,Jin Yang,Haojie Song
Interfacial chemical locking enables stable Ga incorporation into solid lubricant coatings. • Ga (stress buffer), ZIF-8 (load support), graphene (shear reduction and transfer film) synergize. • Covalent bonds (Ga O, N H, Si-O-Si) prevent agglomeration and extrusion of metal under friction. Gallium-based liquid metals exhibit fluidity and reactivity at friction interfaces, creating a lubrication mode that merges liquid-film and solid-support effects. However, their incorporation into solid lubricant coatings faces critical challenges such as poor dispersion stability, insufficient load-bearing capacity, and a tendency to be squeezed out from the contact area. In this study, we successfully constructed an interface-stabilized, densely structured inorganic-organic composite coating, designated GaZGr-K-EP, by embedding a ZIF-8 framework into liquid gallium to stabilize its morphology, introducing graphene to mitigate the sedimentation of Ga/ZIF-8, and modifying the inorganic phase with KH550 to enable interfacial chemical bonding with the epoxy resin. This inorganic-organic interfacial bonding not only prevents coating failure during friction but also, for the first time, unlocks the solid lubrication and anti-wear mechanism of liquid gallium. In this mechanism, liquid gallium dissipates contact stress through localized flow, while ZIF-8 provides rigid load-bearing support. During friction, a Ga 2 O 3 oxide film forms and is reinforced by graphene to develop a continuous transfer film, achieving an ultralow friction coefficient of 0.055 and an ultralow wear rate of 4.33 × 10 −14 m 3 /N·m. This work demonstrates that interfacial chemical locking represents a novel strategy for realizing solid lubrication with liquid metals. Download: Download high-res image (204KB) Download: Download full-size image
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Sikang Wei,Yang Xu,Shihong Tian,Zhaohui Han,Lei Xu
In this study, Al-Mg-Sn-Ga anode material prepared by heating up to 800 °C in microwave field under different powers and heating up to 800 °C in conventional field is compared. The microstructure and corrosion morphology of aluminum alloy anode are observed by electron backscatter diffraction(EBSD) and scanning electron microscopy(SEM), and Tafel polarization curve , electrochemical impedance spectroscopy (EIS) and constant current are characterized by different melting modes. The results are showed that microwave can change the grain orientation of aluminum alloy anode and corrosion forms, compared to the conventional technology, the microstructure of the alloy electrode material can grow preferentially at (001), improve alloy anode electrochemical properties , by pitting corrosion forms into a uniform corrosion , improves the corrosion resistance of the anode and the anode utilization. At the same time, aluminum alloy anode has excellent discharge performance under microwave 2000 W treatment. The energy density and capacity density are 2729.3 Wh·kg −1 and 2596.6 mAh·g −1 , respectively, which are 44.03% and 42.26% higher than those of conventional muffle furnace melting. Therefore, microwave technology can improve the electrochemical performance by affecting the microstructure of alloy materials.
研究领域:
材料科学
·
电化学
·
金属腐蚀与防护
·
能源材料
·
功能材料
·
冶金工程
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DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2022
·Vol. 51
·期 12
·6975-6985
·
IF 2.047
Ma Chaofan,Shen Jun,Tan Liming,Deng Jinzhao,Zeng Chengzong
Ga-based liquid metal (LM) with high thermal conductivity is considered to be a promising thermal interface material (TIM) for electronic thermal devices; however, its pump-out and easy oxidation hinder its popularization. Herein, fluororubber (FKM) was selected as the sealing material to prevent the pump-out of eutectic Ga-In-Sn (EGaInSn) and reduce its oxidation during long-term extreme service conditions. After being placed in an oil bath at 125°C for 4 weeks, the FKM soaked in EGaInSn could still hinder the penetration of EGaInSn and maintain good elasticity and plasticity. When EGaInSn was applied to a radiator cap as TIM, the maximum radiator temperature at full load was 47% lower than that without TIM, and 14% lower than that with commercial thermal grease. Moreover, after experiments including 1000 h of high-temperature aging, 1000 h of constant temperature and humidity, and 1000 thermal shocks, there was no pump-out or apparent oxidation in the sealing structure with FKM.
研究领域:
材料科学
·
电子工程
·
热管理技术
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Jingjing Zheng,Xiaotian Li,Bo Zhang,Xiaoxin Zou,Qihua Liang,Hui Chen,Guo-Dong Li
The concentration of acetone in exhaled breath is an efficient indicator for the diagnosis of diabetes. However, it is difficult to detect acetone in exhaled breath due to the extremely low acetone concentration, rather complex composition and very high humidity. Herein, we report Pt-decorated foam-like Ga-In bimetal oxide nanofibers (Pt-GIO) for trace concentration acetone detection. We found that the Pt-GIO based sensor exhibits enhanced sensing response towards acetone compared with that of Ga-In bimetal oxide (GIO), due to the formation of Schottky contact between Pt and n-type GIO, leading to the increased chemisorbed oxygen. As a result, the Pt-GIO based sensors gives a high response (3.2), short response time (13 s) to 1.8 ppm acetone and very low detection limit (300 ppb). The Pt-GIO sensor also gives good stability and is nearly insensitive to moisture in the range of 40% RH to 95%. These advantages including high response, low detection limit, short response time and high moisture resistance endow Pt-GIO a promising sensing material for acetone detection in exhaled breath.
研究领域:
材料科学
·
医学诊断
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
·
2024
·
IF 4.9
Xilong Ding,Yunpeng Jiang
In this study, glass bubbles (GBs) and gallium-based liquid metal (LM) were combined at varying volume fraction ratios to prepare the composites (GB-LMs), with the objective of optimising their state of matter and overall properties. Furthermore, the incorporation of high thermal conductive particles, including copper and silver, was pursued in augmenting the thermal conductive efficiency of the resulting composites. The thermal conductivity (TC), electrical conductivity (EC) and density were measured in order to construct a comprehensive structure - property relationship, while the underlying microphysical mechanisms were elucidated through the numerical simulations based on the distinctive architectures observed. As the loading of LM droplets increases, the GB-LMs undergo a transition from a scattered state to a thick pasty state and then to a dilute gel state. The composite sample with a loading of 32 % LM droplets exhibited a moderate pasty state, with a TC of 4.7 W/(m·K), an EC of 380 S/m, and a density of 2.4 g/cm 3 . The introduction of copper or silver powders into the GB-LMs resulted in a TC of 8.0 W/(m·K), an EC of 1.59 × 10 4 S/m and a low density of 3.2 g/cm 3 . The incorporation of high TC particles into GB-LMs has the potential to markedly improve the TC-to-density ratio of the composite system. These findings facilitate the implementation of LM-based composites in the advanced thermal management.
研究领域:
材料科学
·
热管理工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）