JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
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2025
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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).
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ACS Applied Materials & Interfaces
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2025
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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.
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INORGANIC CHEMISTRY
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2024
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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.
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Laser & Photonics Reviews
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2024
·Vol. 19
·期 2
·2401248
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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.
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CHEMICAL ENGINEERING JOURNAL
·
2026
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IF 12.5
Shuyue Jiang,Wensi Zhang,Donghao Cui,Jia Lou,Shilun Feng,Kaihuan Zhang
Flexible electrochemical sensors are essential for next-generation wearable health monitoring systems, yet their long-term stability is constrained by mechanical fragility and biofouling in complex biological environments. Here, we present a dual self-healing glucose biosensor incorporating uniquely raspberry-shaped Ga@TiO 2 particles that enable both mechanical and chemical regeneration. These particles facilitate ultrasensitive glucose detection (limit of detection = 0.14 μM) via efficient redox interactions, while also enhancing the device's structural and surface resilience. The Ga@TiO 2 /PVA hydrogel sensor exhibits exceptional multilayer physical self-healing behavior, arising from the synergistic combination of PVA's dynamic hydrogen bonding and the intrinsic fluidity of the liquid metal core, maintaining 101.2 ± 4.13% of its original sensitivity after fracture healing. In addition, the sensor achieves reproducible biofouling self-healing, recovering 100.4 ± 1.35% of its initial signal after contamination, owing to the biomimetic surface morphology and self-renewing liquid metal interface. The gallium-based conductive network further ensures stable electrical performance under mechanical deformation due to its high conductivity and flow adaptability. This dual self-healing mechanism—analogous to biological tissue regeneration and self-cleaning surfaces—offers a robust strategy for constructing durable, high-performance flexible biosensors capable of reliable operation in dynamic and bioactive environments.
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CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Xiaoxia Ye,Feiyang Wang,Juan Liu,Yifan Liu,Yuancai Lv,Chunxiang Lin,Liang Song,Minghua Liu,Ying Zhang,Jie Chen
Radioactive 137 Cs poses a severe threat in nuclear wastewater. Conventional powdered adsorbents suffer from poor recoverability and are ill-suited for large-scale continuous-flow operations. To address these limitations, a novel three-dimensional bulk ammonium phosphomolybdate-gelatin composite adsorbent (AMP@GA) was fabricated. Through this strategy, highly selective AMP particles were uniformly immobilized within a porous (92%) gelatin network. Rapid adsorption kinetics (reaching equilibrium within 30 min), a Langmuir-fitted theoretical maximum Cs + adsorption capacity of 142.17 mg·g −1 at 45 °C, and acceptable chemical stability across a broad pH range (2.0-11.0) were exhibited by the resulting AMP@GA. Most significantly, the material demonstrated outstanding selectivity over competing ions ( K d = 7.48 × 10 4 mL·g −1 ). Its practical viability was confirmed by achieving over 88% removal efficiency in authentic seawater. Furthermore, in fixed-bed column tests, the material sustained continuous operation for 163.5 h. The mechanism is dominated by NH 4 + -Cs + ion exchange, assisted by electrostatic interactions. This work presents a scalable, easily recoverable bulk adsorbent that effectively helps address the engineering bottlenecks of traditional powdered materials.
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FUEL
·
2026
·
IF 7.8
Kaixuan Bian,Lili Feng,Yongyan Yan,Jiawei Geng,Yue Zhang,Mengyang Sun
This study systematically investigated the enrichment behavior, occurrence modes, and speciation evolution of critical metals—indium (In), lithium (Li), gallium (Ga), and rare earth elements with yttrium (REY)—during the combustion of Ningxia coal. Simulated combustion experiments were conducted over a temperature range of 500–900 °C, coupled with sequential chemical extraction procedure (SCEP), X-ray diffraction (XRD), and thermodynamic modeling (FactSage). Results indicate that these metals are significantly enriched in the ash, with In exhibiting the highest enrichment ratio (up to 23.64). Mineral phase transformations—especially the formation of hematite, anhydrite, quartz, and amorphous glass—govern the redistribution of the metals. For In, the primary host shifts from metal oxides at lower temperatures to sulfate and quartz phases at higher temperatures, while Li and Ga remain predominantly associated with aluminosilicate glass and sulfate phases. REY migrate from metal oxide carriers toward sulfate and quartz phases as temperature increases. Thermodynamic predictions further confirm the predominance of solid phases such as In 2 O 3 , LiAlSi 4 O 10 , and Ga 2 O 3 under the investigated combustion conditions. These findings provide critical insights into optimizing the recovery of critical metals from coal fly ash, supporting its high-value utilization and sustainable resource strategies.
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Small
·
2025
·
IF 12.1
Hao Wu,Jinyi Pan,Chao Wu,Jie Wang,Chunyi Jiang,Chenyu Guo,Zhihao Yu,Zhenyang Wang,Sichao Du,Daoyou Guo,Jun Hu
Solar-blind photodetection plays a crucial role in environmental monitoring, corona detection, and covert battlefield communication due to its unique high signal-to-noise ratios in the UVC band. Aluminum quantum dots (AlQDs) emerge as promising optical materials owing to their extended photoresponse in the ultraviolet region, along with their low cost and compatibility with optoelectronic devices. Herein, an AlQDs-based cascade solar-blind photodetector is presented with enhanced sensitivity, achieved through the quantum confinement effect. By employing a gradient double-layer AlQDs stack integrated with β -Ga₂O₃, the heterojunction demonstrates a significantly suppressed dark current, reduced from 3 nA to 2 pA, and a spectral noise density of 2.8 × 10 −11 A Hz⁻ 1 / 2 compared to the single-layer device. The optimized photodetector achieves a high UV–vis rejection ratio ( R 250 / R 400 ) of 2.5 × 10 3 , a specific detectivity of ≈2.3 × 10 1 2 Jones, a relatively fast response time of 25 ms, and a responsivity of 35.1 mA W −1 under a 1 V bias. Furthermore, the device demonstrates robust interference-resistant imaging capabilities, enabling ultra-weak photodetection down to 23 nW cm −2 . These results highlight the potential of AlQDs-based cascade devices for advanced solar-blind photodetection applications.
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Journal of Physical Chemistry C
·
2024
·
IF 3.3
Yujie Zong,Yizhou Wang,Jinze Zhai,Wenbin Su,Chang Tan,Zhihao Li,Yuqing Sun,Hongxiang Wang,Chunlei Wang,Hongchao Wang
By virtue of temperature differences, which are in hundreds of kelvin, the optimized carrier concentration may vary within an order of magnitude. Ga has shown potential in providing temperature-dependent carrier concentration due to its deep level of impurity states, which can ionize and release electrons at higher temperature. However, because of the low solubility, the decreasing of lattice thermal conductivity in the Ga-doped PbTe system is constrained. In this study, monovalent I is introduced, which leads to the solubility of Ga in PbTe reaching 5% and tunes the carrier concentration in PbTe simultaneously. An enhanced maximum PF of 21 μW K–2 cm–1 and ultralow lattice thermal conductivity of 0.61 W m–1 K–1 are attained because of the incorporation of Ga, which together enable an enhanced peak zT of 1.2, an average value of zT to 0.61, and a thermoelectric conversion efficiency η of 9.3% for the Pb0.95Ga0.05Te0.995I0.005 sample.
研究领域:
材料科学
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热电学
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半导体物理
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能量转换材料
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DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 42
·15057-15061
·
IF 4.39
Ming-Yang Cao,Chun-Li Hu,Fang Kong,Zhe-Yao Xiong,Jiang-Gao Mao
Exploration of new types of borates is important because of their promising applications in diverse fields. Two new boroselenites, namely, M(B(SeO3)3)H2O (M = Al, Ga), which represent the first IIIA metal boroselenite, were synthesized by hydrothermal reactions. M(B(SeO3)3)H2O (M = Al, Ga) possesses a unique sandwich like double-layer structure formed by two 2D [MSe2O8]5− layers interconnected by 1D [BSeO5]3− chains. More interestingly, both compounds display large band gaps (4.86/4.79 eV) and moderate birefringences (Δn = 0.063/0.064 at 1064 nm) based on density functional theory (DFT) calculations.
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APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Girma Sisay,Hairus Abdullah,Dong-Hau Kuo,Worku Lakew,Hardy Shuwanto,Sleshi Fentie
The works on photocatalytic hydrogen production and green chemical conversion have received significant attention due to the current need for clean energy and a secure environment. Herein, Ce and Ga codoped Zn(O,S) has been synthesized with different amounts of Ce using facile precipitation method at a low temperature of 95 °C and characterized by XRD, SEM, HRTEM, XPS, EPR, Raman, DRS, PL, EIS, UV–vis, GC–MS, and photocurrent response measurements. The as-prepared photocatalysts were utilized for hydrogen production and hydrogenation of toxic organic compounds, viz. nitrobenzene (NB) and azobenzene (AB) into a valuable product of aniline. The incorporation of Ce and Ga into Zn(O,S) enhanced the hydrogen evolution and hydrogenation reactions of NB and AB. This notable enhancement was ascribed to the synergistic effects of Ce and Ga dopants to form positively charged defects that trap the photogenerated electron. The trapping mechanism improves the photogenerated charge separation and transfer as confirmed with impedance spectroscopy (EIS), transient photocurrent response, and PL measurements. The highest hydrogen production was attained by 15Ce-5Ga-Zn(O,S) with a rate of 7130 μmol∙g − 1 ∙h − 1 in 10% ethanol solution. In addition, NB and AB were effectively converted to aniline in 15 min and 30 min, respectively. A plausible photocatalytic hydrogenation mechanism for both hydrogenation of NB and AB is proposed with the steps of surface adsorption, molecular diffusion, pinning at oxygen vacancy sites, and hydrogenation reaction with the help of in situ generated H + coupled with electrons.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Peng Wang,Baoluo He,Xiaozhi Zhang,Shujuan Liu,Qian Ye,Feng Zhou,Weimin Liu
In this study, size-regulated MOFs (MZ) with high MBT loading were successfully synthesized by combining mercaptobenzothiazole (MBT), zinc salt, and 2-methylimidazole (2-MI). Subsequently, the MZ structure was utilized to encapsulate tannic acid-modified gallium-based liquid metal (GLM-TA), thereby acquiring a novel heterogeneous nanocomposite (GLM-TA@MZ). The results revealed that the as-prepared GLM-TA@MZ shows good antiwear and friction-reducing performance as an oil-based lubricant additive, the average friction coefficient was decreased to 0.091, and a wear volume was reduced to 0.95 × 104 μm3, which corresponds to a decrease of 52.3 and 97.2% as compared to base oil PAO. The excellent tribological properties of GLM-TA@MZ can be attributed to physical adsorption on the friction pair, followed by tribochemical reactions. As a result, a thick friction protection film (thickness of about 100 nm) containing Ga, Zn, and S elements was formed, which effectively reduced the contact area between the friction pairs, resulting in improved tribological performance. This study provides insights into the design of MOF-based nanocomposites for lubricating applications.
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