RSC Advances
·
2025
·Vol. 15
·期 48
·40478-40490
·
IF 4.6
Qisong Feng,Junjun Ma,Yankun Shen,Zheng Zhou,Shilian Wu,Juan Wang,Junpeng Li,Yu Yang
Flexible printed electronics represent a swift, efficient, and cost-effective technique for depositing metallic conductive materials onto flexible substrates, particularly with the pivotal advancement of functional conductive inks. Metal–organic decomposition conductive inks have garnered substantial interest owing to their straightforward synthesis, convenient storage, and low processing temperatures. However, during low-temperature heating, these inks frequently encounter issues such as fast pyrolysis and gas escape, leading to numerous defects in the microstructure of silver films. Moreover, low silver content results in a high volumetric shrinkage rate, negatively impacting electrical conductivity. To address these limitations, this study synthesized four distinct silver precursors and conducted an in-depth analysis of their chemical compositions, thermal behaviors, and microscopic morphologies. Conductive inks were developed with a high silver content using silver citrate as the silver source with gradient thermal volatilization and low-temperature reduction properties. The impact of solvents and complexing agents on the performance of ink formulations was then examined. Furthermore, the evolution of the inks' microstructure was investigated during thermal decomposition along with the influence of the microscopic morphology on electrical conductivity. Finally, the thermal decomposition mechanism was elucidated in detail. By introducing organic solvents with varying boiling points, the intensity of thermal decomposition was effectively reduced, thereby minimizing the appearance of surface defects such as bubble holes and sintering marks. This strategy significantly enhanced the density of the silver film, reduced its surface roughness, and improved its electrical conductivity.
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International Journal of Oral Science
·
2026
·Vol. 18
·期 1
·6
·
IF 17.6
Guo Jiajie,Qiu Qiujing,Yan Xiaoyuan,Zhang Zeying,Zhang Xiyue,An Na,Yin Chengcheng,Yang Di,Okamura Hirohiko,Yoshida Kaya,Sun Hongchen,Qiu Lihong
Rheumatoid arthritis (RA) is an autoimmune disorder that triggers progressive joint destruction by inducing excessive osteoclastogenesis. Porphyromonas gingivalis ( Pg ), the main pathogenic bacterium involved in periodontitis (PD), is closely related to RA. Pg can secrete extracellular vesicles (EVs), which carry numerous virulence factors. The aim of this study was to investigate whether Pg- derived EVs can be transported and exacerbate bone destruction in RA by promoting osteoclastogenesis and to elucidate the underlying mechanisms involved. EVs derived from Porphyromonas endodontalis ( Pe ), which is weakly associated with PD or RA, were used as controls. Pg and Pe EVs interact with osteoclasts after translocating into the marrow and metacarpal joints of mice. In vitro, Pg EVs induce osteoclastogenesis via various components, such as lipopolysaccharide, proteins, lipoproteins, and proteases. TNF-α, IL-1β, and IL-6 promote but cannot independently control Pg EV-induced osteoclastogenesis. RNA sequencing and verification experiments further demonstrated that Pg EVs induced osteoclastogenesis by promoting the phosphorylation of spleen tyrosine kinase (Syk). In vivo, Pg EVs exacerbated RA-induced bone destruction by activating Syk-dependent osteoclastogenesis. R406, a Syk inhibitor, significantly attenuated Pg EV-induced RA osteoclastogenesis and bone destruction. However, Pe- derived EVs presented an extremely weak ability to promote osteoclastogenesis and RA. Our findings reveal a new mechanism by which Pg EVs can exacerbate RA via transport through the circulation and the promote Syk-dependent osteoclastogenesis. This study deepens our understanding of the significant pathogenic role of EVs derived from oral bacterial in RA and explores targeted therapeutic strategies by inhibiting the activation of Syk.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Shuai Wang,Yue Gu,Yu Feng,Ziru Zhao,Shufeng Shen
Nonaqueous amine-based absorbents offer advantages over aqueous monoethanolamine (MEA), but they inevitably evolve into water-lean systems when treating humid flue gas, presenting a challenge for long-term performance stability. In this work, a formulated water-lean absorbent, 50B-40BE-10 W, was evaluated for CO 2 capture from simulated humid flue gas in an upgraded lab-scale continuous plant over 720 h, benchmarking it against 30 mass% MEA. Key operational parameters and water balance behavior were systematically investigated to inform rational process design. Under a framework of absorbent-tailored regeneration strategy coupled with dynamic water-balance control, the 50B-40BE-10 W solvent achieved a remarkably low desorber heat duty, about 50–65% reduction compared to MEA. Critically, a dynamic water-management strategy was proposed and demonstrated, involving controlled discharge of desorber overhead condensate following a membrane dehydration process. This approach successfully maintained stable water content of ∼10 wt% in the solvent over a 100-h period, effectively addressing the challenge of water accumulation in water-lean systems. Furthermore, NMR analysis of the absorbent after ∼1700 h of operation, even under high‑oxygen exposure, indicated no catastrophic degradation. The compelling performance and stability demonstrated at the bench-scale pave a solid pathway for further development of this advanced water-lean capture technology.
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Xiaoxue Zhang,Niu Liu,Zhen-Feng Huang,Ru Jia,Lun Pan,Chengxiang Shi,Xiangwen Zhang,Guidong Yang,Ji-Jun Zou
Electrocatalytic nitrate reduction reaction (NO3RR) presents a sustainable strategy for concurrently remediating nitrate (NO3–) pollution and producing valuable ammonia (NH3). However, its practical application is hindered by sluggish kinetics, particularly on copper (Cu)-based catalysts, which often suffer from inefficient water dissociation, leading to low NH3 selectivity and accumulation of toxic nitrite byproducts. Here, we report the design of copper nanodendrites (Cu NDs) as highly effective NO3RR electrocatalysts. We demonstrate that the sharp tips of the Cu NDs generate localized and intense electric fields. These tip-enhanced fields drive the enrichment of hydrated potassium ions, which in turn significantly accelerates the water dissociation step, ensuring a sufficient supply of active hydrogen (H*) for deep hydrogenation. As a result, the Cu ND catalyst achieves an exceptional NH3 yield rate of 2.58 mmol h–1 cm–2 and a Faradaic efficiency (FE) of 96.91% at −0.6 V versus reversible hydrogen electrode. Remarkably, the catalyst exhibits outstanding durability, maintaining over 96% NH3 FE during a 300 h continuous test. In a membrane electrode assembly designed for practical application, the FE of NH3 surpasses 90% for over 100 h. Furthermore, we demonstrate a scalable product separation process using air stripping, recovering nearly 98% of the produced NH3 and converting over 80% into high-purity NH4Cl and NH3·H2O. This work presents a catalyst design strategy that overcomes a key kinetic bottleneck in the NO3RR and bridges the gap between fundamental catalysis and practical application.
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Journal of Environmental Sciences
·
2023
·
IF 6.9
Xiuying Liu,Qianna Xia,Jiao Zhou,Bowen Li,Shuaiqi Zhao,Long Chen,Aimal Khan,Xiaoxia Li,Aihua Xu
The design of efficient heterogeneous catalysts in bicarbonate-activated hydrogen peroxide systems (BAP) is a hot topic in wastewater treatment. In this work, Cu 2 O nanoparticles with different morphologies including cubic shape (c-Cu 2 O), octahedron shape (o-Cu 2 O) and spherical shape (s-Cu 2 O), were applied in BAP for the first time to degrade tetracycline hydrochloride (TC). Compared with Cu 2+ ions and CuO, TC degradation was boosted in the presence of Cu 2 O in the BAP system, with the degradation rate following the order c-Cu 2 O > o-Cu 2 O > s-Cu 2 O. The morphology-dependent effects could be linearly correlated with the ratio of surface oxygen species (O S ), but not with the surface area or Cu(I) ratio. The c-Cu 2 O catalyst with exposure of (100) facets contained 76.6% O S as the active site for H 2 O 2 adsorption and activation, while the value was much lower for o-Cu 2 O and s-Cu 2 O with dominant (111) facets. The presence of HCO 3 − enhanced the interactions among Cu 2 O, H 2 O 2 and TC, leading to facile oxidation of Cu(I) to Cu(II) by H 2 O 2 , and the formation of various reactive species such as hydroxyl radicals and Cu(III) contributed to TC degradation. This work provides a new method for enhancing H 2 O 2 activation with heterogeneous catalysts by crystal facet engineering.
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MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Xin-Yi Sui,Bing-Qi Zhu,Yue Li,Huan-Jie Che,Jing Li,Jingbin Zeng,Jian-Bo Qu
A bimodal gigaporous anion-exchange medium with the ion-exchange capacity of 0.215 mmol/ml was successfully developed based on hydrophilic gigaporous polystyrene (HGPS) microspheres (diameter between 60 and 115 μm). There are two types of pore in the medium, i.e., gigapores (0.3–7 μm) and mesopores (10–60 nm). The presence of gigapores in the medium can induce convective flow of mobile phase within microspheres, therefore contributing to high column permeability (3.55×10 −10 m 2 ), high dynamic adsorption capacity and high protein resolution at high flow velocities. The mixture of hemoglobin, transferrin and ovalbumin can be baseline separated within 3 min at 2529 cm/h. All the results indicate that anion-exchange medium as developed is very promising for large scale high-speed protein chromatography.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2022
·
IF 4.383
Xiang-Rong Ma,Xian-Yong Wei,Rui Dang,Wei Guo,Meng-Jiao Ren,Yu-Hong Kang,Xiao Li,Yong Gao,Yan-Jun Li,Jing-Jun Bai,Zhi-Pan Liu,Yu-Fei Wang,Jian Li,Zhi-Min Zong
LaCO 3 OH/Ni–Fe-LDH was synthesized as a new type of layered double hydroxides (LDHs) by complexing agent-assisted homogeneous precipitation techniques. According multiple characterizations, LaCO 3 OH/Ni–Fe-LDH has LDH phase with platelet-like particles and mesoporous properties with 141 m 2 g −1 of specific surface area. In addition, both lanthanum and iron are present in the composites, resulting in a significant decrease in the band gap to 2.04 eV, which is lower than that of either Ni–Fe-LDH (2.43 eV) or Ni–Al-LDH (4.86 eV). Compared with Ni–Fe-LDH and Ni–Al-LDH, LaCO 3 OH/Ni–Fe-LDH significantly improved photocatalytic performance and effectively decomposed methyl orange (MO) under visible light exposure. The increased photocatalytic efficiency from LaCO 3 OH/Ni–Fe-LDH is mainly ascribed to the lower band gap and higher adsorption performance. In addition, LaCO 3 OH/Ni–Fe-LDH has an interface region produced by the recombination of semiconductors with LaCO 3 OH and Ni–Fe-LDH structures, which can effectively improve the separation of photocarriers and expand the energy range of photoexcitation . Moreover, a plausible mechanism for photocatalytic decomposition of MO was presented.
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COMPOSITES SCIENCE AND TECHNOLOGY
·
2022
·
IF 9.879
Jing Ye,Yan Gao,Yushan Wu,Cheng Liu,Jiale Dong,Huan Wang,Bo Su,Hua-Xin Peng
A nano-scale electrochemical sculpture (NES) method has been developed to enhance the bonding strength of fiber metal laminates (denoted as FMLs-NES). The influence of NES surface treatments on the low velocity impact response and static mechanical behavior of FMLs was systematically investigated and compared with traditional surface treatments such as mechanical polishing and NaTESi anodizing (denoted respectively as FMLs-PS and FMLs-NaTESi). The examination of the damage area and energy absorption under different impact energy levels revealed that the FMLs-NES specimen exhibited the smallest damage area and energy absorption while maintaining the structural integrity after impact. Finite element simulations were conducted to inform the impact damage progression and failure mechanisms, the results indicate that the interfacial failure mainly occurred between the middle titanium sheet and the bottom 90° fiber layer and propagated from the long edge to the center of FMLs. The experimentally validated finite element model can also be employed to optimize the stacking sequence of FMLs and to predict the residual strength after impact, where the FMLs-NES showed the highest residual strength.
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Nature Catalysis
·
2021
·Vol. 4
·期 7
·557-564
·
IF 41.813
Bu Jun,Liu Zhenpeng,Ma Wenxiu,Zhang Lei,Wang Tao,Zhang Hepeng,Zhang Qiuyu,Feng Xinliang,Zhang Jian
The current thermocatalytic acetylene hydrogenation process suffers from the use of excessive hydrogen and the noble metal Pd, high temperatures and overhydrogenation. Here we report an electrocatalytic semihydrogenation strategy to selectively reduce acetylene impurities to ethylene under ambient conditions. For a crude ethylene flow that contains 1 × 10 4 ppm acetylene, electrochemically deposited Cu dendrites exhibited a high specific selectivity of 97%, continuous production of a polymer-grade ethylene stream (4 ppm acetylene) at a large space velocity of 9.6 × 10 4 ml g cat –1 h –1 and excellent long-term stability. Theoretical and operando electrochemical Raman investigations revealed that the outstanding electrocatalytic acetylene semihydrogenation performance of Cu catalysts originates from its exothermic acetylene adsorption and ethylene desorption. Meanwhile, the electrocatalytic semihydrogenation strategy is universally applicable for hydrogenating other alkyne impurities to produce polymer-grade olefins, for example, propylene and 1,3-butadiene.
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COMPOSITES SCIENCE AND TECHNOLOGY
·
2021
·
IF 8.528
Jing Ye,Huan Wang,Jiale Dong,Cheng Liu,Yan Gao,Bowen Gong,Bo Su,Hua-Xin Peng
A nano-scale electrochemical sculpture (denoted here as NES) method has been developed to create TiO 2 nanotube arrays on the surface of titanium sheets for improved bonding between titanium and carbon fiber reinforced epoxy composite laminates . For comparison, other surface treatments including anodization in NaOH, Na 2 SiO 3 , Na 2 C 4 H 4 O 6 and EDTA electrolyte (denoted as NaTESi) and electrochemical etching in alkali solution (denoted as ALK) were carried out to investigate their effects on the surface morphology , wettability and the shear strength between titanium sheets and epoxy resin. The results from single-lap tests showed that the apparent shear strengths between titanium sheet and epoxy with NaTESi, ALK and optimized NES treatments have been improved by 37.2%, 53.9%, and 70.9%, respectively, in comparison with that of non-treated pristine samples. The samples in single-lap tests showed a mixture mode of cohesive and interfacial failures where the interfacial failure occurred at the epoxy/metal-oxide interface and the oxide films formed during the surface treatments remained intact. Utilizing the treated titanium sheets, fiber metal laminates (FMLs) were fabricated and their interlaminar shear strengths (ILSS) were found to increase by 43.5%, 56.1%, and 75.0%, respectively, compared to pristine samples, showing the promise of the nano-patterning technique.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Huiyong Wang,Shuangyu Li,Qiang Wan,Xin Su,Tao Song,Xiaobing Wang,Jianji Wang
Two-dimensional (2D) molybdenum disulfide (MoS 2 ) has drawn increasing attention due to its great potential for advanced electronics, photonics , optoelectronics , energy storage, catalysis and solar cell. However, high effective exfoliation for the mass production of 2D MoS 2 is still a challenge. To improve the exfoliation efficiency of MoS 2 nanosheets , a facile liquid-phase exfoliation strategy has been developed by using organic electrolyte solutions in this work. It is shown that the dispersion concentration of MoS 2 nanosheets has been significantly enhanced in organic electrolyte solutions. For example, by adding sodium tartrate into dimethyl sulphoxide , the dispersion concentration of MoS 2 nanosheets is 85 times that in neat dimethyl sulphoxide. About 80% of MoS 2 nanosheets obtained in such a strategy is 1–4 layers and the nanosheets remain 2H phase structure. In addition, the photocatalytic hydrogen evolution performance of the as-prepared few-layer MoS 2 nanosheets is evaluated. The photocatalytic hydrogen evolution rate is as high as 0.5 mmolg −1 h −1 , which is 71 and 10 times higher than that of bulk MoS 2 and the 2H-MoS 2 nanosheets, respectively, reported to date. Exfoliation mechanism investigation suggests that the size of cation and the intensity of Lewis basicity of anion in the salts have played an important role in the exfoliation of MoS 2 . The liquid exfoliation strategy reported here has great potential in the large-scale and high quality production of few-layer MoS 2 nanosheets for efficient photocatalytic hydrogen evolution.
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SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Huiying Zhang,Qingyang Li,Xia Zhang,Weifeng Chen,Jinzhi Ni,Liuming Yang,Ran Wei
A crucial mechanism for the application of biochar in soil improvement is the direct release of nutrients from biochar. Low molecular weight organic acids (LMWOAs) ubiquitously exist in soil. However, the mechanism of LMWOAs-mediated release of nutrients from biochars remains little known. Ten biochars with different mineral element stoichiometric ratio were produced, and four LMWOAs [acetic (HAc), glycolic (GA), tartaric (TA), and citric acids (CA)] were employed, to enunciate the influence mechanism of LMWOAs on the release of phosphorus and potassium from biochar. The results showed that HAc suppressed the release of P from biochars, while TA and CA facilitated the release of P from biochars with high ratios of polyvalent metals to P. A new mechanism was proposed that the deprotonated HAc combined with the dissolved HPO 4 2− or H 2 PO 4 − to form a complex through hydrogen bond and cation bridging. The hydrophobic methyl group of HAc was exposed outside of the complex, which decreased the water-solubility of phosphate. Meanwhile, a high ratio of polyvalent metals to P benefited more P to combine with polyvalent metals, which decreased the water-solubility of P, but the deprotonated TA and CA are polyvalent anions that could substitute this part of P by anion exchange. Also, LMWOAs promoted the release of K from biochars with low K/(P + S) ratios, possibly due to unionized carboxyl of LMWOAs served as a hydrogen bond donor to displace K out of biochars. This study gives a deep understanding of the fate of biochar originated nutrients response to LMWOAs.
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