MATERIALS LETTERS
·
2021
·
IF 3.423
Wenjing Dong,Tianyi Xie,Haiyi Peng,Haishen Ren,Huixing Lin
BiOBr photocatalytic active coatings on bismuth-boron-zinc glass carrier using acid etching synthesis were obtained. The effect of direct and indirect corrosion of the glass layer on the bonding ability of the coatings and the substrate were studied. Specially, the BiOBr photocatalytic coating obtained by acid etching after crystallization of the glass has stronger bonding ability with the glass substrate. This is because the needle-like crystal structure after crystallization can be used as a transition layer to closely combine the glass and the photocatalytic coating. In this paper, the concept of plant cultivation was introduced to explain that the coating prepared by the indirect method had a better bonding force with the substrate. This research solves the traditionally difficult recycling problem of degrading organic pollutants in the form of powder, and the preparation method is simple and suitable for industrial mass production.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Fengyi Wang,Yihao Wang,Jinshuo Zou,Gemeng Liang,Kaiqi Hou,Lining Liu,Zehui Lin,Ci Song,Shengyu Liu,Xingyun Li
Crystal structure and surface modulation of Co 3 O 4 catalyst holds great promise for the improvement of catalytic performance for propane oxidation. In this study, Mn doping in Co 3 O 4 was first adapted to introduce crystal defects. And acid etching was then used to orchestrate the surface properties of Mn doped Co 3 O 4 . The combination of both Mn doping and acid etching resulted in a distorted crystal structure, which significantly activates the Co-O bonds, obviously increasing the exposed active oxygen and enhancing the intrinsic oxidation ability. Consequently, as a catalyst for propane oxidation, Mn-Co 3 O 4 -H facilitates the acetate intermediate generation and its decomposition, resulting in an excellent oxidation activity with propane conversion rate 3.8 times higher than that of the pristine Co 3 O 4 catalyst at reaction temperature of 195 °C. Meanwhile, the catalyst demonstrates a stable hydrothermal performance with negligible deactivation during 30 h on-stream test. This study set an important paradigm for the structure and surface manipulation of Co 3 O 4 catalyst for efficient propane oxidation.
研究领域:
催化化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Zhongwei Zhao,Bingshu Guo,Yun Huang,Xichang Wang,Jin Bao,Chunmei Feng,Xing Li,Mingshan Wang,Yuanhua Lin,Haijun Cao
Aqueous zinc-ion batteries (AZIB) are significantly constrained by the poor stability of Zn anodes in aqueous electrolytes, which is caused by uncontrollable deposition behavior and parasitic reactions. The construction of specific crystalline surfaces represents an effective method for stabilizing Zn anodes. Therefore, a stable Malic acid@Zn (MA@Zn) anode with a highly (101) texture configuration is developed through acid etching. The mechanism of MA selective etching is investigated through theoretical calculations, where Zn atoms detach from the (002) crystal surface due to the strong interaction of MA with the (002) surface, leading to the preferential corrosion of the (002) surface and the formation of a unique (101) texture configuration morphology. This texture is conducive to the MA@Zn anode, as it enhances the affinity of MA@Zn for Zn 2+ and optimizes the electric field distribution on the surface, thereby facilitating a more stable Zn deposition. Consequently, the MA@Zn symmetric battery is subjected to stable cycling for a period exceeding 2400 h at a current density of 5 mA cm −2 . In comparison, the cycle life of the Zn//V 2 O 5 full battery is significantly improved by >6000 cycles, pouch battery also shows better performance.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Ahmad Beyhaqi,Seyed Mohammad Taghi Azimi,Zhihong Chen,Chun Hu,Qingyi Zeng
Exfoliated and plicated g-C 3 N 4 nanosheets (CNsF) were prepared through a thermal-chemical exfoliation in which the bulk g-C 3 N 4 was obtained first under thermal exfoliation, and then was exposed to an acidic etching using hydrofluoric acid under hydrothermal condition. The acidic etching not only exfoliated g-C 3 N 4 nanosheets by disrupting weak van der Waals forces between layers, which led to formation of a monolayer or a few layers of g-C 3 N 4 nanosheets, but also made disordered defects on its surface and created plicated g-C 3 N 4 nanosheets. Under visible-light illumination, the optimized sample (CNsF-6%) showed a hydrogen evolution rate of 54.13 μmol h −1 g −1 (without co-catalyst) and a specific surface area of 121.4 m 2 g −1 , which were about 4.7 and 2.5 times, respectively, higher than pristine g-C 3 N 4 . It also showed remarkably enhanced photocatalytic performance in removing various organic pollutants. This remarkable improvement probably arises from the porous nanosheets and an increased number of active sites resulting from the CNsF, which subsequently enhanced the charge separation efficiency. This work provided an alternative way to obtain highly active g-C 3 N 4 photocatalysts .
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 54
·期 10
·7469-7482
·
IF 3.442
Wang Yiqi,Shi Haixiao,Li Xiaoguang
Superhydrophobic aluminum (Al) surfaces are desired in many applications and have been widely studied, but some fundamental issues in their fabrication are not yet fully understood. In this study, commonly used HCl solution and organic acid/sulfur reagents were employed for clarifying the phenomena in etching and composition modification. An unstable layer was revealed after HCl etching, which was removable with water flushing, and this layer, consisting of scattered AlCl 3 /Al 2 O 3 particles surrounded by Al 2 O 3 plates with cracks, caused changes in surface appearance from bright to dark. A complete change in surface color corresponded to sufficient etching, and hence, this visible phenomenon could be used to confirm the shortest etching time for achieving desirable superhydrophobicity. Composition modification with dodecanethiol and myristic acid also modified the microstructure through a slight etching mechanism and a synergistic effect was found with the use of their mixture, which led to the finest grains and most abundant carbon chains on the final surfaces. Consequently, the best superhydrophobicity was revealed in static and dynamic experiments with droplets. Finally, using the advantage of flexibility, a superhydrophobic Al sheet was demonstrated to be suitable for subjecting droplets to controlled rolling and coalescence, which could be meaningful for many droplet-related studies.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Ningning Zhang,Tian Pang,Rui Han,Zhanglei Zhu,Zhen Li
Surface roughness has a significant effect on mineral flotation. In this study, the surface roughness of quartz was altered using HF etching and their values before and after acid etching were quantified using AFM. Anionic flotation experiments with CaCl 2 as activator and sodium oleate (NaOL) as collector, and cationic flotation experiments with dodecyl trimethyl ammonium chloride (DTAC) as collector were carried out for both the raw and acid-etched samples. The results showed that acid etching is beneficial to increase the surface roughness of quartz. The rougher quartz particle has higher recovery and quicker flotation rate during anionic flotation, while lower recovery and slower flotation rate during cationic flotation. The role of surface roughness in the discrepancy of these two flotations was investigated in terms of surface chemistry by X-ray photoelectron spectroscopy, UV spectrophotometer, surface force tensiometer, and zeta potential analyzer. The rougher sample was confirmed to have more unsaturated interfacial active sites, adsorbed more Ca 2+ and NaOL, and exhibited higher hydrophobicity in anionic flotation. Differently, the rougher sample was verified to have less interfacial negative charge, adsorbed less DTAC, and exhibited weaker hydrophobicity in cationic flotation. Taken together, the surface roughness altered by acid etching has different effects on the adsorption capacity of NaOL and DTAC, thus affecting the wettability and floatability of quartz particles inconsistently in anionic and cationic flotation.
研究领域:
矿物加工工程
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
JOM
·
2024
·Vol. 76
·期 8
·3994-4005
·
IF 2.1
Li Weishun,Yun Hong,Dai Wenjing,Wang Baofeng,Xu Qunjie
Phosphoric acid etching combined with hydrothermal treatment was used to construct a Sc 2 O 3 -ZnO coating on the Zn anode surface to tune the content of Zn (002) crystal surface. The (002) crystalline surface of Zn surface became the preferred crystal face for the H 3 PO 4 etching time of 7 min and hydrothermal reaction for 2 h at 160°C. The polarization curve results showed that in 2 M of ZnSO 4 solution, the corrosion potential of Zn anode with (002) crystallographically optimal orientation was positively shifted by 663 mV and the corrosion current density was reduced by about four orders of magnitude compared with the bare Zn. The results of LSV and XRD showed that the Zn anode with (002) preferred crystal face possessed a more negative hydrogen evolution potential, which effectively hindered the occurrence of the H 2 evolution side reaction and significantly inhibited the corrosion of metal Zn and the generation of alkaline zinc sulfate hydrate as a byproduct. Dense Sc 2 O 3 -ZnO coatings composed of crosslinked nanofibers provided a long-lasting and effective shielding protection. The coating facilitated the induction of Zn (002) crystal face oriented deposition, and the bonding of N or P enhanced the stability of coating, which significantly enhanced the corrosion resistance.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yun Tang,Jingqi Ruan,Yalou Xin,Xiaohu Ren,Hudie Yuan,Xianhu Liu,Qiang Chen
The development of metal–organic frameworks (MOFs)-derived magnetic carbon-based materials for high-efficiency electromagnetic wave (EMW) absorption has attracted widespread attention. While these MOFs-derived composites have shown exceptional performance in absorbing EMWs within the X and Ku bands, the pursuit of effective absorption at lower frequencies remains a challenge. Herein, we demonstrate a novel strategy to synthesize hollow Co@C/C rods with excellent C-band EMW absorption via acetic acid etching and pyrolysis of core–shell ZIF-8@ZIF-67. Based on acetic acid etching, ligand-deficient ZIF-8@ZIF-67 rods with abundant mesoporous structures are constructed, enabling precise control over the Co nanoparticles content, graphitization degree, and pyridinic N doping in the derived Co@C/C. This simple fine-tuning approach simultaneously reduces dipole polarization by lowering the pyridinic N doping concentration, suppresses interfacial polarization and conduction loss through reducing the number of graphitic carbon layer, and enhances magnetic loss by increasing the Co content. These combined effects collectively improve the impedance matching of Co@C/C for low-frequency absorption. Notably, as the volume of acetic acid solution increases, the absorption frequency band of Co@C/C gradually shifts from the Ku-band to the C-band, while sustaining superior EMW absorption performance. At the filling ratio of merely 11 %, the RL min values for Co@C/C-20 and Co@C/C-30 achieve −49.8 dB and −34.7 dB at 7.2 GHz and 6.8 GHz, respectively. This study offers a valuable approach to the development of lightweight materials with excellent EMW absorption in C-band.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Lijuan Chen,Fangzhong Liu,Yaoyong Dong,Yong Pei,Xianyou Wang,Xiongwei Wu,Xuejun Zheng,Wenyuan He,Bei Long
Constructing (002) crystal plane-exposed Zn anodes by acid etching strategy can efficiently inhibit the Zn dendrite growth in aqueous zinc-ion batteries. However, there is rare research on the role of anions in the etching process. Herein, we investigate the effects of anions in acid etching strategies by theoretical calculations and experimental analyses. The strong adsorption of anions (such as C 6 H 5 O 7 3− and C 6 H 6 O 7 2− ) on Zn (002) plane can prevent acid etching. Therefore, the electrode with exposed Zn (002) plane (CA@Zn) is successfully prepared by citric acid etching. Due to the exposed Zn (002) plane and a unique porous architecture, the CA@Zn displays high corrosion resistance , excellent Zn reaction kinetics, and dendrite suppression. As a result, the CA@Zn symmetric cell exhibits a stable cycling for 1600 h at a current density of 0.5 mA cm −2 and the CA@Zn||Cu half cell achieves a high average Coulombic efficiency of 98.2 % for 1200 cycles. Moreover, CA@Zn||MnOOH full cells deliver high specific discharge capacity and excellent rate performance.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Chenbo Yuan,Liwen Yin,Peng Du,Yu Yu,Kaifu Zhang,Xiaodi Ren,Xiaowen Zhan,Shan Gao
The application of zinc (Zn) metal in aqueous Zn metal batteries (ZMBs) has been hindered by the susceptibility of Zn anodes to dendritic electrodeposition due to its inhomogeneous surface structures. Herein, we design uniform microgroove patterns on practically accessible Zn foil anodes using a simple and scalable acid etching strategy. The unique surface structure guides homogeneous Zn deposition, accelerates interfacial reaction kinetics, and inhibits electrolyte corrosion. The resulting Zn anodes afford an excellent plating/stripping stability of 2920 h at an ultralow overpotential of 19.5 mV under 1 mA cm −2 /1 mAh cm −2 cycling, with both the cycle life and overpotential ranking among the best records reported thus far. Moreover, the synergetic mechanisms for morphology-induced enhancement were rigorously elucidated. The present strategy contributes a reliable performance baseline for future studies, and can be readily combined with other emerging tactics such as surface coating to accelerate further performance upgrades towards practical ZMBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Carbon Energy
·
2023
·
IF 20.5
Feiyang Yang,Ying Yao,Yunkai Xu,Cong Wang,Meiling Wang,Jingjie Ren,Cunzhong Zhang,Feng Wu,Jun Lu
Although biomass-derived carbon (biochar) has been widely used in the energy field, the relation between the carbonization condition and the physical/chemical property of the product remains elusive. Here, we revealed the carbonization condition's effect on the morphology, surface property, and electrochemical performance of the obtained carbon. An open slit pore structure with shower-puff-like nanoparticles can be obtained by finely tuning the carbonization temperature, and its unique pore structure and surface properties enable the Li–O 2 battery with cycling longevity (221 cycles with 99.8% Coulombic efficiency at 0.2 mA cm −2 and controlled discharge–charge depths of 500 mAh g −1 ) and high capacity (16,334 mAh g −1 at 0.02 mA cm −2 ). This work provides a greater understanding of the mechanism of the biochar carbonization procedure under various pyrolysis conditions, paving the way for future study of energy storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2019
·
IF 1.911
Fanglu Yuan,Lele Cui,Peipei Ding,Wenheng Jing
Electrochemical technologies for the on-site treatment of spent acid etchant have received great attention due their ease of operation and economic benefits. On the other hand, a large amount of Cl 2 is generated during the electrolysis process, which leads to potential environmental risks. In the present work, a novel three-compartment ceramic membrane flow reactor, including a cathode chamber, an anode chamber, and a gas absorption chamber was developed. The three chambers were divided by an Al 2 O 3 ceramic membrane and a breathable hydrophobic anode diffusion electrode (ADE). The Cl 2 evolution onset potential of the ADE was increased to 1.19 V from 1.05 V of the graphite felt, effectively inhibiting the chlorine evolution reaction (CER). The anode-generated Cl 2 diffused into the gas absorption chamber through the ADE and was eventually consumed by the H 2 O 2 adsorbent. Cu could be recovered without emitting chlorine due to the special structure of reactor. The current efficiency of copper precipitation and cathode reduction from Cu 2+ to Cu + reached 97.7% at a working current of 150 mA. These results indicated that the novel membrane reactor had high potential for application in the copper recovery industry.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）