Materials
·
2025
·Vol. 18
·期 2
·393
·
IF 3.2
Hongyan Zhu,Xinyu Li,Shijie Li,Ximing Wang,Yabo Ma,Jin Zhang,Yunpeng Ren,Jianguo Zhao
Desalinating seawater is a crucial method for addressing the shortage of freshwater resources. High-efficiency, low-cost, and environmentally friendly desalination technologies are key issues that urgently need to be addressed. This work usedPopulus tomentosa Carr.as a matrix material and preparedPopulus tomentosa Carr.@Fe-GA through a complexation reaction to enhance the water evaporation rate and photothermal conversion efficiency of seawater desalination. The concentration of the impregnation solution was further refined, and the bonding mechanism along with the thermal stability of the composite photothermal material was investigated, including an assessment of their photothermal conversion efficiency. The research results indicate that the evaporation rate of water in a 3.5% NaCl solution forPopulus tomentosa Carr.@Fe-GA under light intensity conditions of one sun reached 1.72 kg·m−2·h−1, which was an increase of 44.5% compared to untreatedPopulus tomentosa Carr.It achieved a photothermal conversion efficiency of 95.1%, an improvement of 53.6% over untreatedPopulus tomentosa Carr., and maintained stability and high evaporation performance (95.4%) even after prolonged rinsing. This work realizes the functional utilization of seawater desalination withPopulus tomentosa Carr.and offers a novel approach for the development and use of wood-derived photothermal material.
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ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Dawei Gao,Haixiang Wang,Qiaoli Lu,Chao Ye,Jingsheng Cai,Lili Wang
Antibiotics, widely used to treat bacterial infections and as agricultural feed additives, pose significant environmental threats due to their persistence, particularly sulfamethoxazole (SMX), which is frequently detected in various ecosystems. Traditional wastewater treatment methods are often ineffective in their removal. This study presents a cost-effective three-dimensional CCF@MoS 2 @GA-Fe (CMGF) catalyst, with cotton fabric as a support to enhance peroxymonosulfate (PMS) activation in advanced oxidation processes (AOPs). Findings indicates that Mo(IV) active sites in CMGF significantly enhanced electron transfer and redox cycling of Fe(II)/Fe(III), ensuring sustained PMS activation and achieving approximately 3.8 times higher degradation efficiency compared to non-catalytic processes. After five cycles, CMGF retains its high catalytic activity. Key active species during PMS activation include singlet oxygen ( 1 O 2 ), hydroxyl radicals (•OH), and sulfate radicals (SO 4 − •). This research elucidates the catalytic mechanisms and degradation pathways of the CMGF/PMS system, highlighting its potential for removing organic pollutants from water.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Jinjie You,Rui Chen,Qiaofen Pan,Zeming Zhang,Aili Sun,Rongrong Zhang,Hua Liu,Xizhi Shi
The development of new electrochemical sensitizing materials is crucial for rapid detection technology. In this study, gallium-doped carbon quantum dots (Ga@CQDs) were synthesized using a one-pot hydrothermal approach to serve as coreactant for luminol. A molecular-imprinted electroluminescence sensor was prepared for rapid, sensitive cypermethrin (CYP) detection using in-situ electrodeposition. Ga doping reduces CQDs' band gap, boosts conductivity and catalysis, and enhances luminol's ECL signal. The advancement in molecular imprinting technology significantly enhances the sensor's ability to selectively detect CYP, while also providing robust interference resistance. The ECL intensity of the sensor correlated linearly with CYP concentration (0.05–100 μM) under optimal conditions (R 2 = 0.9912, LOD= 0.03 μM). In practical applications, recovery rates of water and aquatic product samples ranged from 86.4 % to 98.0 %, with RSD that did not exceed 8.13 %. A Ga@CQDs-based luminol sensitizing system for molecularly imprinted electrochemical sensors provides a solution for fast, sensitive CYP detection in environmental and aquatic products.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Hong Tian,Huimin Mao,Jiawei Wang,Yi Cheng
The HZSM-5 zeolite was modified through alkali treatment (NaOH) and metal loading (Ga, Ni), followed by constructing an MCM-41 layer to create a core–shell molecular sieve catalyst. With the feedstock of wheat straw, this work investigated the effects of various catalysts on pyrolysis product distribution and bio-oil composition with a tubular furnace and Py-GC/MS. The results showed that with the alkali-treated HZSM-5, the yield of monocyclic aromatic hydrocarbons (MAHs) in the bio-oil reached 40.35%, with an overall bio-oil yield of 21.16%. Metal-modified zeolites, exhibiting enhanced acidity, further optimized the bio-oil composition, producing an MAH yield of 61.48% and 27.31% bio-oil yield. Bimetal loading with Ga and Ni further enhanced MAH selectivity, delivering an MAH yield of 69.48% and a bio-oil yield of 27.79%. The synergy between Ga and Ni suppressed excessive aromatization and polymerization into polycyclic aromatic hydrocarbons (PAHs), favouring MAH formation. Constructing an MCM-41 layer further promotes the selectivity of MAHs. Compared to uncoated catalysts, those coated with MCM-41 significantly improved monocyclic aromatic yields, achieving the highest MAH yield of 83.61%.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yu She,Lin Shao,Min Yi,Yong Fang,Linqiao Qin,Yu Liu,Xinpeng Wang,Kaituo Wang
In this paper, efficient, economical and environmentally friendly mesoporous silica microspheres (MSMs) were prepared for the first time by reversed-phase suspension-dispersion method using water glass and acetic acid as raw materials. MSMs had excellent sphericity, with particle size concentrated at 100 µm, specific surface area of 207.90 m 2 /g and pore volume of 0.47 cm 3 /g. Adsorption equilibrium of Ga(III) by MSMs was reached in 30 min on 30 ppm GaCl 3 with dosage of 2 g/L and pH = 3, conforming to the pseudo-second-order kinetic model. The adsorption isotherm showed that the adsorption of Ga(III) by MSMs is endothermic process with saturation adsorption of 83.47 mg/g at 328 K. The K d of MSMs for Ga(III) was above 8000 in three multivariate systems of zinc ore leaching residues, fly ash and e-waste, showing excellent selectivity. The desorption equilibrium of 78.44 % was reached at 2 mol/L H 2 SO 4 for 120 min, and the adsorption rate of Ga(III) on MSMs was still exceeded 90 % after five adsorption–desorption cycles, showing that MSMs have excellent cycling performance. The fixed-bed column experiments showed the efficient separation and enrichment performance of MSMs for Ga(III) in simulated leachate. The adsorption process in MSMs is synergistic interaction is between physical adsorption and ion-exchange, with ion-exchange being the main mechanism. This provides a new approach to address the issues of poor adsorption capacity and slow adsorption–desorption rate faced by adsorbents for the highly selective recover of Ga(III) from zinc ore leaching residues, fly ash and e-waste, which is potentially promising for application.
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DIAMOND AND RELATED MATERIALS
·
2025
·
IF 5.1
Shuo Yang,Yukun Li,Yingying Fu,Mingjia Dong,Cong Chao,Sen Yao,Qiqian Huang,Shuying Dong
The primary objective of this research was to develop an efficient and stable material capable of both photocatalysis and persulfate (PDS) activation for the degradation of tetracycline (TC). To this end, a composite material, g-C 3 N 4 /Cu x O/GA (CNCuGA), was synthesized via an optimized hydrothermal assembly method. The physicochemical, microstructural, and photoelectric properties were systematically characterized, establishing a CNCuGA/SSL/PDS system to evaluate key parameters (doping rate, catalyst amount, PDS and TC concentrations, initial pH, and co-existing components) on TC degradation under simulated sunlight. Under optimal conditions (15 % doping ratio, 0.2 g·L −1 catalyst, 20 mg·L −1 PDS and 20 mg·L −1 TC), the CNCuGA-3/SSL/PDS system achieved 93.6 % (0.04223 min −1 ) TC removal within 60 min, surpassing the GA/SSL/PDS system (55.4 %, 0.00922 min −1 ) by a factor of 4.58. Mechanistic studies indicated that the enhanced performance originated from accelerated photogenerated electron transfer and prolonged electron lifetime, which promoted reactive species generation, along with the critical role of the Cu(I)/Cu(II) redox cycle in enabling persistent PDS activation. CNCuGA-3 also exhibited excellent recyclability over five cycles, with minimal metal leaching, while the treated solution showed high mineralization efficiency and low biological toxicity. These results collectively demonstrated the promise of CNCuGA-3 as a durable and effective catalyst for solar-driven antibiotic wastewater treatment.
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Fuel Cells
·
2017
·Vol. 17
·期 5
·723-729
·
IF 1.706
Y. Yi,J. Huo,W. Wang
Molecular simulation method was firstly used for analyzing the energy of aluminum alloy systems alloyed by Mg, Ga, Zn and Mn. Based on the analyses, Al-Mg, Al-Ga, Al-Zn, Al-Mn alloys were metallurgically prepared. The structures, electrochemical activities and utilization ratios were characterized by X-ray diffraction patterns (XRD), anodic polarization measurement and galvanostatic discharge. The calculated energies of the aluminum alloy systems increase in the following order: Al< Al-Mn < Al-Mg < Al-Zn < Al-Ga. The absolute values of the open circuit potentials of the alloys measured in alkaline solution rank in the following orders: φ Al-Ga alloy > φ Al-Zn alloy > φ Al-Mg alloy > φ Al-Mn alloy and the order is consistent with the calculated energies. The results indicate that molecular simulation based on the first-principles is a useful method in the alloying design and thermodynamic performance prediction. Alloy additives Zn and Ga effectively change the open circuit potential of metal aluminum to a more negative potential. In addition, alloy additive Zn increases the charge transfer resistance of Al→Al 3+ , which decreases the discharge current density. Alloy additive Mg diminishes the grain size of the alloy and notably enhances the discharge current density. Alloy additive Mn improves the utilization ratio remarkably when discharging in alkaline solution.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Minghua Wang,Dan Guo,Bochong Wang,Jianyong Xiang,Kun Zhai,Tianyu Xue,Fusheng Wen,Yingchun Cheng,Congpu Mu
In this work, MIL-96 (Ga) was successfully synthesized by a microwave-assisted method and pyrolyzed at 700 o C to obtain Ga 2 O 3 /C (G-700) composites. After carbonization, Ga 2 O 3 nanoparticles were uniformly embedded in a porous carbon skeleton. The surface of MIL-96(Ga)-derived Ga 2 O 3 /C was used as a template for directional pyrrole polymerization. G-700@PPy composite materials were obtained by in-situ polymerization of pyrrole on the surface of G-700. A hierarchical interfacial structure was created with regulated dielectric properties. The effect of pyrrole doping content on the electromagnetic waves (EMWs) absorption properties of G-700@PPy composite materials was studied. The experimental result showed that the minimum reflection loss ( RL min ) value of G-700@PPy-3 composite materials reached -79.0 dB under a thin thickness of 1.58 mm, and the maximum effective absorption bandwidth (EAB) of 5.66 GHz was obtained under 1.78 mm. The results indicate that highly conductive PPy could significantly improve the impedance matching conditions and electromagnetic attenuation capacity of G-700 composite materials, which provided an important idea for optimizing the microwave absorption properties of low permittivity composites.
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ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Hui Liu,Zongbao Zhang,Xiang Zhang,Yangyang Cai,Yang Zhou,Qiqi Qin,Xubing Lu,Xingsen Gao,Lingling Shui,Sujuan Wu,Jun-Ming Liu
Planar perovskite solar cells (PSCs) based on low-temperature processed gallium (Ga)-doped TiO 2 (Ga-TiO 2 ) films and CH 3 NH 3 PbI 3-x Cl x active layer have been fabricated by one-step method. The annealing temperature of Ga-TiO 2 electron-transport layer (ETL) is only 200 °C. The effect of Ga doping concentrations on the electric properties of Ga-TiO 2 ETL and PSCs has been systematically investigated. At the optimum Ga concentration, the PSCs based on Ga-TiO 2 and TiO 2 ETL achieve the champion power conversion efficiency (PCE) of 17.09% and 14.63%, and an average PCE of 16.51% and 14.15%, respectively. The higher PCE of PSCs based on Ga-TiO 2 ETL (Ga-PSCs) can be attributed to the reduced trap state density, enhanced conductivity, increased electron mobility and suppressed charge recombination, which will lead to higher V oc , J sc and FF, thus the improved PCE. Moreover, the Ga-PSC shows negligible hysteresis and improved stability compared to the reference TiO 2 -PSC. After being stored in air for 28 days, the PCE of unsealed Ga-PSCs can remain to be 86% of its initial value. This work provides an excellent strategy to fabricate efficient and stable PSCs by low-temperature process.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Fanghai Liu,Hui Jiang,Zhanchuang Lu,Yanpeng Gao,Jiafa Li,Lin Zhou,Syed Aamir Hussain,Ping Chen,Xianghua Wang,Lei Chen
It is promising to develop next-generation indoor and outdoor flexible electroluminescent light sources, as thin as wallpaper, by converting electric energy into light directly based on semiconductor quantum dots (QDs). This work reports a sunlike full-spectrum electroluminescent white light-emitting diode (WLED) fabricated by spin-coating the mixture of yellow-green, red, and blue QDs at once, adopting the device structure of ITO/PEDOT:PSS/PVK(PTAA)/Mixed QDs/ZnO:Mg (AP-ZnO)/Al(Ag). The yellow-green and red QDs are prepared by coating three-layer ZnS shells on the CuInS2 cores, which are synthesized using sulfur powder and dodecanethiol (DDT) as sulfur source, respectively. The blue QDs are prepared by coating three-layer ZnS shells on ZnCuGaS2 cores. The photoluminescence quantum yield (PLQY) of the yellow-green, red, and blue QDs is 82%, 89%, and 83%, respectively. The WLED emits warm white light with a color temperature of 3000 K, chromaticity CIE (0.4228, 0.4287), and color rendering index (CRI) Ra 92.4. The electroluminescence spectrum of the device, whose similarity to the solar spectrum reaches 91.7% in the wavelength region of 450–700 nm, is rich in the red component and poor in the blue component, showing great potential for future healthy lighting applications.
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Reaction Kinetics Mechanisms and Catalysis
·
2022
·Vol. 135
·期 4
·2231-2246
·
IF 1.843
Luo Qiuzi,Sun Yihua,Guo Jin,Zhang Jiangyu,Fang Liang
The properties of ZnO nanoparticles doped with titanium ions (Ti 4+ ) and gallium ions (Ga 3+ ) were modified by sol–gel method. Considering the ion radius of doped metal elements, the radius of Zn ions and the doping limit of ZnO, the doping rate of Ti is fixed at 1 atom%, and the optimal doping amount of Ga is discussed. The Ga/Ti co-doped ZnO nanoparticles were characterized by X-ray diffraction (XRD), ultraviolet/visible spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and infrared spectroscopy. XRD results show that Ga/Ti co-doped ZnO has hexagonal wurtzite phase structure. With the increase of Ga doping concentration, the particle size of ZnO decreases. Through photoluminescence analysis, it is found that the absorption of Ga/Ti co-doped ZnO in the visible region moves to the long wave direction. In addition, with the increase of Ga doping, the particle size of GTZ powder first decreases and then increases, the band gap also decreases and then increases. When the doping amount of Ga is 1.5 atom%, the photocatalytic activity is the best. The degradation rate of MB was 90% within 2.5 h. Ga/Ti co-doped ZnO nanoparticles have good photocatalytic properties and low cost. They are a promising catalyst for wastewater treatment.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Xiaofang Wen,Hongcan Lou,Zheng Li,Jiehao Xie,Zirui Qin,Xingkun Chen,Yuan Tan,Nian Lei,Wei Lu,Yunjie Ding
The development of efficient catalysts for the selective hydrogenation of dimethyl oxalate (DMO) to high-value oxygenates is of great industrial importance. This study presents a systematic investigation into the promotional effect of gallium (Ga) on Cu/SiO 2 catalysts for tailoring product selectivity in DMO hydrogenation. A series of Ga x Cu 30 /SiO 2 catalysts with varying Ga loadings (x = 0.5, 1, 3 wt%) were synthesized via the ammonia evaporation method. With a moderate Ga doping of 0.5 wt%, the Ga 0.5 Cu 30 /SiO 2 catalyst achieved an exceptional ethylene glycol (EG) yield of 74 %, which is three times higher than its Ga-free counterpart (23 %). Further increases in Ga loading to 1 and 3 wt% redirected the reaction pathway, steering the selectivity towards ethanol (ET, 81 %) and 2-methoxyethanol (MT, 54 %), respectively. Characterization by N 2 O titration, XRD, XPS, in situ FT-IR and H 2 -TPR revealed that Ga incorporation fine-tunes the synergy between metallic Cu 0 (for H 2 dissociation) and Cu + sites (for C=O bond polarization). Concurrently, the generated surface acid sites facilitate subsequent dehydration and hydrogenolysis steps. Consequently, the catalytic performance is directly correlated with the evolution of Cu valence states and surface acidity. This work provides a rational strategy for designing multifunctional catalysts for the selective synthesis of target chemicals from DMO.
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