Journal of Water Process Engineering
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2024
·
IF 6.3
Zixuan Huang,Bokun Chang,Yuan Tang,Qiao Li,Zhixin Zhang,Shiyu Wei,Xinyi Chang,Yajun Yang,Chenyang Xu,Feinan Hu,Jialong Lv,Wei Du
To recover nitrogen and phosphorus from water bodies and reduce their potential risk of causing eutrophication, high-temperature pyrolysis-produced biochar (HBC) modified by ferric chloride (Fe-HBC) was adopted to investigate its surface modification on the co-adsorption performance of nitrogen and phosphate. In comparison to HBC, Fe-HBC exhibited superior specific surface area, well-developed pore structure, and enriched surface functional groups while successfully loading Fe 2+ and Fe 3+ . It has been determined that the co-adsorption mechanism of ammonium and phosphate by Fe-HBC involves a combination of pore filling, ion exchange, functional group coordination, electrostatic attraction, and coprecipitation. The results from the batch adsorption experiments indicate that the ammonium adsorption capacities for Fe-HBC1, Fe-HBC2, and Fe-HBC3 were 10.59 mg/g, 10.38 mg/g, and 7.59 mg/g, respectively, while the phosphate adsorption capacities were 13.46 mg/g, 10.46 mg/g, and 15.22 mg/g, respectively. The results of the column adsorption experiments showed that too high or too low biochar percentage and flow rate were not conducive to improving the adsorption capacity of the adsorption column, and the maximum adsorption capacity of the adsorption column was achieved at a biochar percentage of 1 % and a flow rate of 1 mL/min. This study demonstrates the potential of this iron-modified biochar derived from agricultural wastes for practical application in the removal of ammonium and phosphate from wastewater.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 22
·32935-32949
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IF 0
Wang Junfeng,Wang Heng,Qi Xianjin,Zhi Gang,Wang Jianhua
The high cost and low adsorption capacity of primary metal-organic frameworks (ZIF-8) limit their application in heavy metal removal. In this paper, Co/Zn bimetallic MOF materials were synthesized with excellent adsorption performance for As 5+ . The adsorption reached equilibrium after 180 min and the maximum adsorption was 250.088 mg/g. In addition, Co-ZIF-8 showed strong selective adsorption of As 5+ . The adsorption process model of Co-ZIF-8 fits well with the pseudo-second-order kinetic model ( R 2 =0.997) and Langmuir isotherm model ( R 2 =0.994), and it is demonstrated that the adsorption behavior of the adsorbent is a single layer of chemical adsorption. In addition, when the adsorbent enters the arsenic-containing solution, the surface of Co-ZIF-8 is hydrolyzed to produce a large number of Co-OH active sites, and As 5+ arrives at the surface of Co-ZIF-8 by electrostatic adsorption and combines with the active sites to generate the arsenic-containing complex As-O-Co. After four cycles, Co-ZIF-8 showed 80% adsorption of As 5+ . This study not only provides a new method to capture As 5+ in water by preparing MOF with partial replacement of the central metal, but also has great significance for the harmless disposal of polluted water.
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PubMed
DIAMOND AND RELATED MATERIALS
·
2025
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IF 5.1
Tengfei Wang,Boyu Liu,Qing Pang,Hongyu Wang
Three-dimensional graphene aerogels are emerging as promising materials for microwave absorption, due to their unique characteristics of low density and high porosity. Although lightweight electromagnetic wave (EMW) graphene-based aerogel absorbers have been developed, synergistically optimizing the EMW performance of these absorbers through structural design and simultaneously introducing multiple loss mechanisms remains challenging. This paper presents an innovative design strategy that modifies the hole structure of aerogel by controlling the content of Co ions while simultaneously introducing magnetic loss, thereby achieving ultra-light broadband absorption performance. Notably, when the added amount of Co ions is 0.3 mmol, the aerogel exhibits a minimum reflection loss (RL min ) of −44.9 dB, and an effective absorption bandwidth (EAB) of 5.68 GHz. The remarkable EMW absorption performance can be attributed to the enhancements of polarization loss and magnetic loss. Furthermore, the RCS simulation results indicate that the aerogel effectively reduces EMW scattering in practical applications. Thus, this research offers a highly effective strategy for the development of EMW absorption materials that are thin, lightweight, broadband, and high-performance.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2017
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IF 5.401
Youling He,Jiangling He,Li Wang,Zhonghang Yu,Haoran Zhang,Yingliang Liu,Bingfu Lei
A new type of ratiometric fluorescent sensor was fabricated in a facile and low-cost process via sequentially assembling blue-light-emitting luminescent carbon dots (BCDs) and red-light-emitting carbon dots (RCDs) into the pores of mesoporous aluminas (MAs) through hydrogen band interactions. The advantages of the resultant BCDs/RCDs/MAs co-doped materials are that their luminescence exhibits dual characteristic peaks of the BCDs and RCDs under a single excitation wavelength, and that they having high surface-to-volume ratios. The co-doped materials were monitored in different carbon dioxide (CO 2 ), oxygen (O 2 ), nitrogen (N 2 ), and water vapor (H 2 O) environments. Based on the energy transfer from the RCDs to BCDs, with the addition of oxygen, the characteristic fluorescence intensity of the RCDs is monotonically quenched, but that of the BCDs remains almost unchanged. These results allow for the fabrication of a ratiometric fluorescent sensor using BCDs as reference fluorophores, and RCDs as target sensitive fluorophores. The as-prepared ratiometric fluorescence sensor has a high sensitivity with a linear oxygen volume range from 0 to 100, and exhibits an extremely short response/regeneration time of 2–4 s. The BCDs/RCDs/MAs co-doped materials are highly sensitive and selective for the detection of oxygen.
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IEEE SENSORS JOURNAL
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2024
·
IF 4.3
Da Yang,Zhe Qu,Fei Li,Siyuan Lu
A convenient and less time-consuming approach for developing an optical oxygen sensing film with excellent balance between sensing performance and operating stability is addressed in the current work. In order to achieve better mechanical strength and resistance against ultraviolet (UV) degradation, a series of oxygen sensing films were prepared by embedding Pt (II) meso-tetra (pentafluorophenyl)porphine (PtTFPP) in the hosting copolymer matrices, which comprised different blending ratios of plasticized polyvinyl chloride (PVC) and poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) on polypropylene porous fiber membrane. The microstructure and optical properties of the sensing films were characterized by using scanning electron microscopy (SEM), laser confocal microscopy, and fluorescence spectrometer. Phase delay measurement under different oxygen partial pressure (PO $_{{2}}\text {)}$ and temperature was conducted to evaluate the sensing performance and temperature compensation models of the sensing films for oxygen monitoring. Results show that the response time of the sensing films were all less than 10 s. The sensitivities and detecting ranges of the sensing films were increased and decreased with the reduction in PVC/PVDF-HFP ratio. When PVC/PVDF-HFP ratio reached 1:2, sensing film exhibits the best sensitivity of 0.334 kPa $^{-{1}}$ and the smallest phase reduction rate of 0.0045°/h after 24 h of continuous irradiation by UV light, presenting a promising utilization potentiality in fields of gaseous oxygen detection.
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Advanced Science
·
2025
·
IF 14.1
Chenglong Wang,Zeyu Shou,Chengwei Xu,Kaiyuan Huo,Wenjie Liu,Hao Liu,Xingjie Zan,Qing Wang,Lianxin Li
Osteointegration, the effective coupling between an implant and bone tissue, is a highly intricate biological process. The initial stages of bone-related immunomodulation and cellular colonization play crucial roles, but have received limited attention. Herein, a novel supramolecular co-assembled coating of strontium (Sr)-doped metal polyphenol networks (MPN) modified with c(RGDfc) is developed and well-characterized, for eliciting an early immunomodulation and cellular colonization. The results showed that the (Sr-MPN)@RGD coating significantly regulated the polarization of macrophages to the M2 phenotype by controllable release of Sr, and promote the initial adhesion of bone marrow mesenchymal stem cells (BMSCs) by RGD presented on MPN. Notably, the (Sr-MPN)@RGD attenuated osteoclast differentiation and oxidative stress as well as enhanced osteoblast differentiation and angiogenesis due to macrophage polarization toward M2 phenotype, which in turn has a profound effect on neighboring cells through paracrine signaling. In vivo results showed that the (Sr-MPN)@RGD coating manifested superior osseointegration and bone maturation to the bare Ti-rod or Ti-rod coated with MPN and Sr-MPN. This work contributed to the design of multifunctional implant coatings that address the complex biological process of osteointegration from the perspective of orchestrating stem cell recruitment with immunomodulatory strategies.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Bowen Luo,Zhipeng Tian,Chao Wang,Ying Chen,Jianping Liu,Riyang Shu
The development and utilization of renewable lignin from industrial crops to produce high-value bio-based chemicals and fuels is of great significance in reducing dependence on fossil resources and promoting green chemistry. However, conventional metal-supported catalysts often suffer from poor metal dispersion and particle agglomeration during lignin conversion, resulting in insufficient catalytic activity. To address these challenges, a novel biochar-encapsulated cobalt catalyst (Co@BC) was developed in this study for efficient lignin hydrogenolysis. The catalyst formed a unique thin carbon layer structure by encapsulating cobalt nanoparticles in biochar, which enhanced metal dispersion and prevented particle agglomeration. The performance of the catalysts was systematically evaluated at different calcination temperatures. Co@BC-650 showed the best results with a lignin liquefaction degree of 79.7 % and a monophenol yield of 19.1 wt%. This yield was significantly higher than that of the supported Co/BC-650 catalyst, which only reached 15.4 wt%. The thin carbon layer not only facilitated the reduction of cobalt species at 650 °C, but also provided antioxidant protection and maintained the stability of metallic cobalt, which was essential for H 2 adsorption and activation. In addition, Co@BC-650 exhibited excellent stability with little loss of activity after 3 cycles. This study provides an efficient and sustainable method for the selective production of monophenols from renewable lignin from industrial crops, which has the potential to be widely applied for biomass conversion and large-scale sustainable chemical production.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 19
·8556-8570
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IF 3.5
Wang Jianwen,Huang Siyu,Shi Fengyue,Yang Yang,Yang Xinjia,Li Jun,Zhao Guangdong
The synthesis of Bisphenol A Glutaraldehyde Phenolic Resin (BPA-GA PF) was carried out under alkaline conditions using Bisphenol, A (BPA) and Glutaraldehyde (GA) as raw materials, with n-butanol serving as the solvent. Based on the aforementioned information, the researchers prepared modified BPA-GA PF resins by incorporating titanium (Ti), silicon (Si), and boron (B) through a polymer derivative method. This process led to the formation of Ti/Si/B-modified PF resins. By manipulating the proportion of elements in the BPA-GA PF, the modified phenolic resin demonstrated improved capacity for design and processing. The characterization of the modified BPA-GA PF involved the analysis of its transformation process and thermal behavior through the utilization of Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric Analysis (TGA). The presence of B, Ti, and Si elements in the system resulted in the formation of Si–O-B and B-O bonds, as determined. The Ti/Si/B -modified PF exhibited a significant increase in yield. Analysis employing X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) revealed that, following high-temperature annealing, the materials underwent a transformation into Ti/Si/B-modified PF with a highly cross-linked network structure. Oxidation experiments conducted under static conditions demonstrated that the Ti/Si/B-modified BPA-GA PF exhibited significantly greater high-temperature resistance compared to the BPA-GA PF. Among the various options, the Ti/Si/B-modified PF material with a Ti/Si ratio of 1:2 exhibited the most superior resistance to high-temperatures.
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Journal of Energy Storage
·
2024
·
IF 8.9
Yiping Qiu,Xingyue Wu,Denghui Tang,Junyao Li,Wenrong Cai,Laidi Xu,Yong Kong,Zheng-Zhi Yin
A Prussian blue analogue is grown in situ on nickel foam (NF) by a co-precipitation strategy, which is further converted into Ni-Co tellurides ((Ni-Co)Te)/NiTe through a hydrothermal method. The obtained (Ni-Co)Te/NiTe shows a heterogeneous and multi-dimensional structure, which displays a high areal specific capacitance of 2390.7 mF cm −2 at 1 mA cm −2 and a high capacitance retention of 80.3 % after 5000 cycles. Further, a hybrid supercapacitor (HSC) is assembled by using the (Ni-Co)Te/NiTe grown on NF (NF@(Ni-Co)Te/NiTe) as the cathode and activated carbon (AC) supported on NF (NF@AC) as the anode, respectively. The HSC exhibits a maximum energy density of 95.6 Wh kg −1 at the power density of 444.5 W kg −1 , which is higher than most of the HSCs previously reported. The synergistic effect of the heterojunction in the (Ni-Co)Te/NiTe and its multi-dimensional structure plays a crucial role in the enhanced reaction kinetics of the HSC.
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Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 8
·5882-5897
·
IF 9.5
Siyue Hui,Huanzhi Zhang,Guangpeng Xu,Junhao Zhang,Fen Xu,Lixian Sun,Xiangcheng Lin,Lei Ma,Hongliang Peng,Bin Li,Erhu Yan,Federico Rosei
Thermal insulation and temperature control are extremely important in numerous human activities. Traditional aerogels with low thermal conductivity are known to facilitate good insulation. Boron nitride (BN) aerogels consist of nanoscale nanofiber units with plentiful porous structures, possessing excellent thermal/electrical insulation and chemical stability. However, these porous materials cannot effectively block heat transmission, despite their low thermal conductivity. Therefore, it is necessary to develop a new insulation strategy and explore materials with excellent thermal insulation performance, with special attention to heat transmitted not only through air, but also through thermal regulation by thermal adsorption. Phase change materials (PCMs) are considered promising latent heat storage materials due to their large heat storage capacity, making them promising candidates for highly efficient thermal insulation. However, the flammability of organic PCMs and their susceptibility to leakage during the solid-to-liquid transition seriously limit their wide application. In this study we combined the dual-thermal insulation performance of BN fiber aerogels and PCMs and constructed novel flexible and multifunctional composites with excellent thermal insulation performance using Co-MOF nano-flower cross-linked BN aerogels as interconnected porous substrates to encapsulate paraffin wax (PW) PCMs. The composites exhibited the advantages of BN, Co-MOFs and PCMs, overcoming the drawbacks of single-component materials. The results showed that the latent-heat storage capacity of the BN/Co-MOF/PW composites reached 188.11 J g−1 and the resulting thermal conductivity was as low as 0.0397 W (m−1 K−1), due to high thermal insulation performance. The morphology, flexibility, mechanical performance, and flame retardancy of the constructed BN/Co-MOF/PW composites were systematically investigated, ensuring that the composites could be used for thermal insulation and flame-retardant applications.
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ACS Applied Energy Materials
·
2024
·
IF 5.4
Seokyoung Choi,Wuliang Feng,Yongyao Xia
High nickel and Co-free layered cathodes (LiNi0.9Mn0.1O2, NM) for lithium-ion batteries (LIBs) have gained researchers’ interest recently because of their high energy density and being free of toxic elements, but they still suffer from inferior electrochemical performance due to the lattice instability during cycling. Herein, we successfully improved the electrochemical performance of NM using a high-entropy strategy. A high nickel Co-free multidoped high-entropy LiNi0.9Mn0.05Zr0.01Nb0.01Ti0.01Al0.01Mg0.01O2 (HE-NM, where HE represents high entropy with Zr, Nb, Ti, Al, and Mg dopants) cathode with five dopants was successfully synthesized. Owing to the effect of the multidopant, parasitic reactions and the accumulation of rock-salt phase were successfully suppressed, which led to uniformized interior stress and effectively inhibited microcracks during cycling. Consequently, HE-NM showed high thermal and structural stability with an initial discharge capacity of 206.35 mAh g–1 at 0.1 C and a retention of 76% after 100 cycles at 1 C, which showed a great advantage over the pristine NM (63%). This work provided a strategy for the stabilization of the NM cathode, which provided insight for the development of high-performance LIBs.
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高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Deyuan Yang,Ruirui Cui,Chaoyong Deng
Recently, the splendid strategy of co-doping ns2 electron configuration ions with rare-earth ions in all-inorganic lead-free halide double perovskites has been proposed to overcome the weak absorption cross-section of the f–f transition of rare-earth ions and achieve efficient white emission. But few of them can really provide effective red emission in lead-free halide double perovskites, despite the wide variety of rare-earth ions, and lead-free halide double perovskites with co-doping rare-earth ions and doping ns2 electron configuration ions usually exhibit an unsatisfactory color rendering index due to the narrow characteristic emission peaks of rare-earth ions. To address this issue, Mn2+ ions with red wide peak emission were introduced into Cs2NaScCl6 simultaneously with Tb3+ ions and Sb3+ ions in this work. The white light emission was observed in Cs2NaScCl6:0.01Sb3+,0.12Tb3+,0.07Mn2+ under 336 nm excitation because the presence of energy transfer from Sb3+ ions to Mn2+ and Tb3+ ions enhances fluorescence performances of Mn2+ and Tb2+. The temperature-dependent spectrum of Cs2NaScCl6:0.01Sb3+,0.12Tb3+,0.07Mn2+ shows that it exhibits a stable white emission in the temperature range of 298–398 K, and it's emission intensity at 398 K only decreases by less than 18% of the initial intensity (at 298 K). Excitingly, WLED devices with a quite high color rendering index of 93.6, which is one of the best in lead-free halide double perovskites, and nearly standard white light CIE coordinates of (0.3425, 0.3435), have been fabricated by using Cs2NaScCl6:0.01Sb3+,0.12Tb3+,0.07Mn2+ and a 340 nm LED chip and can maintain a good white color stability at different working times and currents. These results indicate that Cs2NaScCl6:Sb3+,Tb3+,Mn2+ is an outstanding candidate for WLED applications.
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