CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Guangyuan Chen,Linzhen Wu,Zeru Wang,Ruixi Liu,Chuan Tan,Yi Tan,Yawen Liu,Miaomiao He,Hao Zhang,Yikun Huang,Jiongzhi Zhu,Tao Duan,Lin Zhu
The capture of radioactive gaseous iodine is essential for the sustainable development of nuclear energy and the long-term safe supply of nuclear fuel. However, the presence of nitrogen oxides in the exhaust gas generated during spent fuel reprocessing poses significant challenges to the stability of iodine adsorbents. It is crucial to consider the impact of NOx on the structure and adsorption performance of the materials. We report here the development of an aluminum-based metal–organic framework (MOF), CAU-1, engineered for efficient iodine capture. Synthesized through a cost-effective and straightforward method, CAU-1 exhibits excellent structural stability and robust adsorption performance, with a maximum iodine vapor adsorption capacity of 1277.18 mg/g at 130 °C and methyl iodide adsorption capacity of 533.10 mg/g, highlighting its potential for efficient iodine vapor removal. Notably, CAU-1 retains its structural integrity and iodine adsorption performance even in the presence of 5 % NO 2 , maintaining high adsorption capacities for I 2 (1129.41 mg/g) and CH 3 I (436.79 mg/g). Mechanistic analysis revealed the key role of the –NH 2 group in the iodine adsorption process. Additionally, co-adsorption studies with I 2 and NO 2 showed that CAU-1 can still capture iodine in the form of both I 2 and I 3 - in the presence of NO 2 . This study illustrates the potential of CAU-1 as an effective industrial adsorbent for removing iodine from NO 2 -containing gas streams.
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ADVANCED FUNCTIONAL MATERIALS
·
2024
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IF 18.5
Jiawei Zou,Guotao Wang,Shiyu Lin,Han Yang,Xinxi Ma,Huajian Ji,Siao Zhu,Yimeng Lyu,Chao Wang,Yunlei Zhou,Qiong He,Qianhui Wang,Fei Gao,Zhen Zhang,Tianqi Hao,Zhoulu Wang,Yi Zhang,Xiang Liu,Yutong Wu
As one of the latest research directions, membraneless batteries provide an economical solution to redox flow batteries. Advances in electrolyte and device design have promoted membraneless batteries from microfluidic demonstration to systems with stimulated modes and considerable electrochemical properties. However, the achieved cycling volumetric capacity is typically limited. Herein, a biphasic membraneless zinc-iodine battery (Z|T-I) is proposed, through optimized Zn growth, the Z|T-I battery achieved a volumetric capacity of 8.93 Ah L −1 for 100 cycles with an average Coulombic efficiency (CE) of 98.49% (2300 h), the deep cycling exhibited a volumetric capacity of 21.7 Ah L −1 (50.43 Wh L −1 based on typical membraneless battery calculation, 1200 h); both values are the highest among single/biphasic membraneless batteries using liquid active materials with/out stimulations (<6.6 Ah L −1 ) reported so far based on the total electrolyte volume. A thorough analysis of Zn growth in Zn-Br 2 /I 2 electrolytes with various testing conditions provided direct evidence of the contrasting Zn electrodeposition morphologies at both macro and micro scales. The biphasic ZnI 2 battery design strategy gives insights into optimizing material crossover/spatial utilization and electrolyte interfacial stability to realize a scalable membraneless energy storage system with a reduced cost.
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Nature Photonics
·
2024
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IF 32.3
Zhou Yang,Guo Zhengfeng,Gu Honggang,Li Yanqiang,Song Yipeng,Liu Shiyuan,Hong Maochun,Zhao Sangen,Luo Junhua
Optical anisotropy, a spatially asymmetric light–matter interaction that manifests itself as birefringence and dichroism, is paramount for manipulating light polarization in modern optics. So far, various natural birefringent crystals are widely used, but their birefringence is limited to <0.3. Here we demonstrate a solution-processable natural crystal C 3 H 8 N 6 I 6 ·3H 2 O with giant birefringence up to 2.8 within the visible to infrared spectral region. Combining critical point analysis and the first-principles calculations, we reveal that this giant optical anisotropy mainly comes from the linear (I 3 ) − structural units in a parallel arrangement, which maximizes the difference of polarizability along the different crystallographic axes. This work highlights the potential of natural polyiodide crystals as an outstanding platform to satisfy the increasing demand for photonic applications that exploit polarization in optical communication, three-dimensional imaging, ultrahigh-resolution sensing and other tasks.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Na Wang,Yuanyuan Ma,Yunzhen Chang,Liping Feng,Huichao Liu,Boqiong Li,Wanxi Li,Yanyun Liu,Gaoyi Han
Zinc-iodine batteries (ZIBs) have been recognized as a promising energy storage device due to their high energy density, low cost and environmental friendliness. However, the development of ZIBs is hindered by the shuttle effect of polyiodides which results in capacity degradation and poor cycling performance. Inspired by the ability of starch to form inclusion compounds with iodine, we propose to use a starch gel on the cathode to suppress the shuttle of polyiodides. Herein, porous carbon is utilized as a host for iodine species and provides an excellent conductive network, while starch gel is used as another host to suppress polyiodides shuttle, resulting in improved battery performance. The test results demonstrate that the conversion between I − /I 2 /I 3 − in the cathode and the effective inclusion role of starch suppress the shuttle of polyiodides during the charging process. Meanwhile, based on the electrochemical tests and theoretical DFT calculations, it is found that starch has a stronger ability to adsorb polyiodides compared to carbon materials, which enables effective confinement of polyiodides. The ZIBs used the cathode with starch gel exhibit high coulombic efficiency (>95 % at 0.2 A/g) and low self-discharge (86.8 % after resting for 24 h). This strategy is characterized by its simplicity, low cost and high applicability, making it significant for the advancement of high-performance ZIBs.
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PubMed
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Zining Zhou,Kaiji Xu,Changyong Li,Jianbin Lin,Juanjuan Bian,Kang Sun,Jianchun Jiang,Shu-Feng Zhou,Guowu Zhan
Three-dimensional (3D) printed monolithic catalysts/adsorbents have attracted much attention due to their excellent properties. Herein, the rice husk-derived nitrogen-doped biochar (using urea as the nitrogen dopant) was printed into monolithic adsorbents using direct ink writing technology, and then assembled as agitating paddles for organic dye adsorption. To reduce the over-embedding of active sites in the polymeric matrix, CaCO 3 particles in nano-sized or micron-sized were added as sacrificial pore generators to form macropores and expose active sites, leading to an enhanced mass transfer efficiency. Material characterization results confirm the self-sacrificial role of CaCO 3 . The 3D-printed adsorbents with micron-sized CaCO 3 (denoted as 3D-HRSCCm) possessed excellent adsorption performance, as evidenced by a high adsorption capacity and kinetics study. Meanwhile, 3D-HRSCCm adsorbents were mounted as agitating impellers which demonstrated excellent reusability with the adsorption efficiency remaining above 90% after ten cycles. Furthermore, the 3D-HRSCCm exhibited excellent adsorption properties for various dyes such as methylene blue, rhodamine B, crystal violet, and malachite green. Moreover, the numerical simulation confirms that the introduction of CaCO 3 as a pore generator improved diffusion by providing wider channels and facilitated the mass transfer that accelerated the adsorption rates.
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INDUSTRIAL CROPS AND PRODUCTS
·
2024
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IF 5.6
Zhichao Bao,Vivian F. Lotfy,Xuesong Zhou,Shiyu Fu,Altaf H. Basta
Agricultural wastes are huge source of organic materials for preparation of active carbon, which can be applied to water treatment by absorbing the dissolved substances. Rice straw (RS) or their pulping byproducts, Kraft black liquor (KBL) and kraft lignin (Lignin-KBL) are used as precursors for the preparation of activated carbons (ACs). The process was carried out with activation assistance of potassium ferrate (K 2 FeO 4 ). The optimum temperature of activation on RS precursor is 700 °C evaluating by the textural analysis and the liquid phase adsorption models. The prepared activated carbon (RSFAC) under K 2 FeO 4 from RS at this temperature provided highest BET surface area and total pore volume (440.5 m 2 /g and 0.274 cm 3 /g). It had excellent adsorption capacities of cationic and anionic dyes and a maximum adsorption capacity of iodine (585.2 mg/g). Applied the optimum activation temperature to pulping by-products (KBL), the result showed AC with BET surface area and total pore volume of 378 m 2 /g and 0.218 cm 3 /g, respectively. These results are higher than that obtained from using phosphoric acid activating agent, and at temperature 450 °C (BET surface area and total pore volume were 310.6 m 2 /g and 0.243 cm 3 /g). The ferrate activation of RS and lignin-KBL is contributed to the function of iron oxide as an oxidation catalyst, which gave the ACs with mesoporous and microporous. Regarding to the liquid phase adsorption models and kinetics, anionic dye adsorption equilibriums of all RSFACs (Coomassie brilliant blue R-250 CBB) follow the Freundlich model, but the cationic methylene blue dye adsorption equilibriums mostly follow the Langmuir model. Adsorption kinetics of these RSFACs are well-explained in terms of dye kinetic adsorption by the pseudo-second-order model. The procedures for AC preparation from rice straw under K 2 FeO 4 provided a good route to utilize agricultural residues.
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Advanced Energy Materials
·
2024
·
IF 24.4
Dandan Li,Ying-Jie Zhu,Long Cheng,Sida Xie,Han-Ping Yu,Wei Zhang,Zhenming Xu,Ming-Guo Ma,Heng Li
Achieving both high iodine loading cathode and high Zn anode depth of discharge (DOD) is pivotal to unlocking the full potential of energy-dense Zn-I 2 batteries. However, this combination exacerbates the detrimental shuttle effect of polyiodide intermediates, significantly impairing the battery's reversibility and stability. Herein, this study reports an advanced high-loading iodine cathode (denoted as MX-AB@I) enabled by a multifunctional Ti 3 C 2 T x MXene modulator, which presents high stability and energy density in Zn-I 2 batteries. Through comprehensive experimental and theoretical analyses, the intrinsic regulating mechanisms are elucidated by which the MXene modulator effectively suppresses polyiodide shuttling, enhances iodine conversion kinetics, and dramatically improves Zn anode reversibility. With the aid of the MXene modulator, the MX-AB@I composite cathode achieves a high iodine mass loading of 23 mg cm −2 and realizes a practically high areal capacity of 4.0 mAh cm −2 . When paired with a thin Zn anode (10 µm), this configuration realizes a high Zn DOD of 78.7% and a high energy density of 171.3 Wh kg −1 , surpassing the majority of Zn-I 2 battery systems reported in the literature. This study presents an effective approach to designing high-loading iodine cathodes for Zn-I 2 batteries by leveraging MXene modulators to regulate critical electrochemical reaction processes.
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MICROCHEMICAL JOURNAL
·
2024
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IF 4.9
Yufan Zhang,Li Luo,Siyue Tian,Bingjian Zhang,Qiang Li
Archaeobotany plays a vital role in understanding the origins and development of agriculture. Given the different primary crops in northern and southern China, developing a method for distinguishing between millet and rice residues is crucial. Enzyme-linked immunosorbent assay (ELISA) has unique advantages in detecting animal organic residues, but its effectiveness in detecting plant residues remains uncertain. Therefore, this study devised an optimized ELISA method for the rapid, high-throughput identification of millet and rice residues in archaeological samples. The method exhibited satisfactory sensitivity and specificity, effectively detecting plant organic residues in both categories of archaeological samples. The method’s applicability and accuracy were cross-validated through documentary records, iodine–potassium iodide testing, and phytolith analysis. This study also represents a preliminary application of ELISA in archaeobotany. With further research, this technology has the potential to become a valuable tool in plant archaeology.
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SENSORS AND ACTUATORS A-PHYSICAL
·
2024
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IF 4.1
Xiaojun Pan,Xinmiao Zhang,Gang Wang,Hongye Li,Jiang Li,Jianqiao Song,Shimin Wang,Mengjing Jin,Jinyuan Zhou,Lian Zhou
Omnidirectional detection is widely used in optical tracking systems, omni-directional cameras and optical field measurements and so on. However, the planar structures of ultraviolet (UV) photodetectors (PDs) limit their application in omnidirectional detection. In this work, the NiO nanosheets were fabricated on a titanium (Ti) wire substrate by hydrothermal method and then assembled a photoelectrochemical (PEC) type UV photodetector (PD). Under ultraviolet (UV) irradiation of 35 mW cm −2 @ 365 nm, the PD exhibits a stable photocurrent of 1.53 μA cm −2 and repeatable switching cycles. Also, the PD presents fast response and recovery times of 0.074 s and 0.130 s, respectively. Particularly, the PD based on NiO@Ti possesses excellent response for rotation angles in the range from 0° to 360° under UV light irradiation .
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JOURNAL OF SOLID STATE CHEMISTRY
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2024
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IF 3.2
Renjie Li,Yaning Xu,Yong Li,Ying Qiao,Dan Tian
Azo dyes, used in large quantities in drinks, have become a threat to human health. In the treatment of dyes, the method of chemical adsorption is often used due to its simple and efficient features. Covalent organic frameworks (COFs) material with the characteristics of stability and porosity has great potential for the adsorption of azo dyes. However, the application of COFs is severely limited by their poor mechanical properties and hard recovery. By the strategy of in situ growth using the original functional groups of the sponge, COFs are successfully grafted onto melamine sponges to give rise to a porous sponge@COFs material. The material can adsorb up to 621 mg g −1 of Congo red, a common azo dye. In addition, it exhibits strong adsorption of iodine solution with the saturated adsorption of 1504.76 mg g −1 . More importantly, sponge@COFs can selectively adsorb azo dyes with S–O - bond. The adsorption mechanism is inferred as the connect of S–O - in the Congo red molecule with O atom of sponge@COFs. Also, the mechanism of iodine adsorption is explained to be due to the coordination of C atoms in COFs with I atom. In addition, as an adsorbent, the material is recoverable, stable and heat resistant. Relying on the stronger performance and lower cost, sponge@COFs is expected to be developed as a new adsorbent.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2017
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IF 9.446
Ya-nan Zhang,Ning Qin,Jianyun Li,Shengnan Han,Pan Li,Guohua Zhao
An anatase TiO 2 with {001} facet exhibits high oxidation activity towards the degradation of wastewater. The impact of {001} facet exposure degree on the degradation oxidation kinetics and mechanism is still unclear and urgently needs to be discussed. The photoelectrocatalytic (PEC) degradation of bisphenol A (BPA) in wastewater using facet-controlled nanocrystalline {001} TiO 2 /carbon aerogel (CA) photoelectrodes was then investigated in this study. Nano-sized anatase {001} TiO 2 crystals with different {001} facet exposure degrees of high (90%), medium (48%) and low (15%) were constructed on a CA substrate via electrophoretic deposition. A positive correlation was found between the {001} facet exposure and the photocurrent density, electron carrier concentration and the total amount of OH. Nearly 100% BPA removal efficiency was shown on the 90%-{001}TiO 2 /CA in 6 h. The rate constant ( k ) value was 0.454 h −1 and the TOC rate was 83%. They are 1.8 and 1.8 times greater than those obtained on the 48%-{001}TiO 2 /CA, as well as 3.5 and 2.4 times greater than those on the 15%-{001}TiO 2 /CA, respectively. The greatly promoted PEC oxidation activity of 90%-{001}TiO 2 /CA is due to its more rapidly accumulated intermediates products than other two photoelectrodes, which then completely mineralize into CO 2 and H 2 O. This is mainly because of the highest oxidation sites existed on the 90%-{001}TiO 2 surface and the efficient separation of electron-hole pairs between the {001} TiO 2 and CA under the electric fields.
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Small
·
2024
·
IF 13
Lijun Hu,Haoyang Zheng,Shisheng Yang,Xinhong Liu,Yi-Meng Du,Jinao Li,Hongqing Wang,Kuan Sun
Constructing concentration differences between anions and cations at the ends of an ionic conductor is an effective strategy in electricity generation for powering wearable devices. Temperature gradient or salinity gradient is the driving force behind such devices. But their corresponding power generation devices are greatly limited in actual application due to their complex structure and harsh application conditions. In this study, a novel ionic concentration gradient electric generator based on the evaporation difference of the electrolyte is proposed. The device can be constructed without the need for semipermeable membranes, and operation does not need to build a temperature difference. As a demonstration, a PVA–Na ionic hydrogel is prepared as an electrolyte for the device and achieved a thermovoltage of more than 200 mV and an energy density of 77.94 J m −2 at 323 K. Besides, the device exhibits the capability to sustain a continuous voltage output for a duration exceeding 1500 min, as well as enabling charging and discharging cycles for 100 iterations. For practical applications, a module comprising 16 sub-cells is constructed and successfully utilized to directly power a light-emitting diode. Wearable devices and their corresponding cell modules are also developed to recycle body heat.
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