CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiayan Liang,Hongyu Zhang,Jian Zhang,Xuwen Wang,Yangming Wang,Hao Bai,Yi Rong,Kaifeng Lin,Debin Xia,Yulin Yang
Pomegranate-like B@(NH 4 ) 2 SiF 6 @LiClO 4 enables ordered boron combustion. • Sequential fluorination–oxidation suppresses oxide re-passivation. • The optimized composite shows faster ignition and stronger flames. Boron suffers from severely limited combustion efficiency due to the kinetic barrier imposed by its native oxide layer. In this work, a pomegranate-inspired B@(NH 4 ) 2 SiF 6 @LiClO 4 composite was fabricated via a two-step solvent evaporation-induced self-assembly strategy, enabling highly dispersed reactive domains and intimate interfacial contact. The distinctive pomegranate-inspired architecture establishes particle-level spatial organization of the reactive components, while their distinct thermal activation windows provide the temporal basis for a proposed spatiotemporally coordinated reaction pathway. TG-DSC and TG-FTIR analyses reveal that fluorine-containing species derived from (NH 4 ) 2 SiF 6 evolve prior to LiClO 4 melting and major oxidizer release, supporting a proposed sequential fluorination-oxidation pathway involving early fluorine-mediated interfacial modification followed by oxidizer-driven boron oxidation. At an optimal (NH 4 ) 2 SiF 6 content of 10 wt%, the ignition delay and combustion duration are reduced by 15.47% and 68.22%, respectively, compared with B@LiClO 4 , demonstrating substantially improved ignition and combustion kinetics. Combined structural, thermal, and combustion analyses support the proposed spatiotemporally coordinated fluorination-oxidation pathway arising from the coupling of particle-level organization and temporally separated thermal events. This work provides a particle-level interfacial engineering strategy for coordinating fluorination and oxidation in high-performance boron-based energetic systems. A pomegranate-inspired B@(NH₄)₂SiF₆@LiClO₄ enables spatiotemporally ordered boron combustion by coupling fluorination and oxidation reactions within confined nanoscale domains. Sequential interfacial activation and molten-salt-mediated oxygen transport promote continuous reaction propagation and suppress oxide re-passivation, resulting in faster ignition, intensified flame propagation, and more efficient energy release compared with conventional physically mixed systems. Download: Download high-res image (176KB) Download: Download full-size image
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高影响因子
CHEMICAL PHYSICS
·
2025
·
IF 2.4
Zihan Su,Xiaojie Liang,Jiayu Yang,Wanxiao Wang,Yue Chen,Lijuan Chen,Yuzhu Qian,Bei Long
Organic materials have emerged as promising NH 4 + storage materials due to their advantages including rich resources and abundant active sites. However, they face challenges, such as poor conductivity and limited cycling stability. In this study, we synthesize an organic polymer, poly-quinol-phenylenediamine (POLA), and prepare POLA-30 by incorporating POLA into reduced graphene oxide (rGO). The incorporation of rGO with mechanical robustness, excellent conductivity, and large specific surface area significantly enhances the charge transfer and structural stability of POLA-30. In 0.5 M (NH 4 ) 2 SO 4 electrolyte, POLA-30 shows a low median discharge voltage of −0.47 V at 0.05 A g −1 , a high specific capacity of 149 mA h g −1 at 0.05 A g −1 , and retains 70 % of original capacity after 5000 cycles at 0.5 A g −1 . Ex-situ analyses further elucidate the insertion/de-insertion mechanism of NH 4 + in POLA-30. Additionally, a full cell assembled with POLA-30 anode and δ-MnO 2 cathode maintains 78 % of its initial capacity after 700 cycles at 0.05 A g −1 . This study reflects the broad application prospects of polymer electrodes.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Qiya Gao,Zetao Chen,Yongchang Bai,Jie Fu,Ziyue Qin,Shuang Li
With the rapid development of integrated electronic circuit technology, biological fluid-electricity integrated detection systems have gradually become a research hotspot. Researchers have integrated biological fluid electrical detection methods into circuits and developed small, low-power, portable detection devices equipped with sensing electrodes, which can achieve continuous monitoring of human health parameters. In recent years, the integration of reverse iontophoresis technology that can be used to extract body fluids with electrochemical sensors has opened up the possibility of flexible, portable biochemical sensing with excellent detection sensitivity. Herein, we present a method for extracting biofluids based on reverse iontophoresis technology, coupled with electrochemical sensing techniques for the simultaneous detection of various biomarkers in body fluids. The multi-channel sensing electrode was modified layer by layer using nitrogen-doped graphene ( N -Gr), ion-selective membrane, or lactate oxidase for rapid and sensitive detection of pH (3–8), ammonium ion (NH 4 + ) (0.1 mM–50 mM), and lactic acid (1 mM–50 mM). Subsequently, an integrated system for electrical stimulation extraction and sensing analysis based on reverse iontophoresis was established and experimentally tested. Experimental results demonstrated that the multi-channel joint detection sensing electrode has excellent sensing linearity, specificity, repeatability, and long-term stability. Finally, a smartphone-based WeChat applet was developed, which can realize parameter setting, function selection, and result display of sensor detection. In this study, reverse iontophoresis technology was used to collect body fluids, and the important biomarkers pH, NH 4 + , and lactic acid in the body fluids were detected. Overall, this research presents an integrated detection system and a multi-channel sensing scheme for the detection of important biochemical markers in bodily fluids, thereby providing potential value for health monitoring applications.
研究领域:
生物医学工程
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电化学传感器
·
健康监测
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Linlin Hao,Jingshuang Yan,Jiaoying Guo,Nannan Wang,Ming Zeng
Swine wastewater is a type of highly turbid wastewater with extremly high concentration of COD, NH 4 + , and total phosphorus. To address the drawbacks of commercial coagulants in the pretreatment of swine wastewater, such as loose flocs, slow settling rates, and the inability to remove NH 4 + , a novel Mg-Fe-Al hybrid magnetic coagulant (Mg/Fe/Al-MC) is prepared by using the high-pressure acid leaching (HPAL) technology based on iron tailings waste. Compared to atmospheric acid leaching (AAL), HPAL significantly increased the iron leaching rate from 22 % to 61 %. The specific surface area was increased from 5.1 to 9.2 m 2 /g. The study revealed the synergistic crystallization-coagulation-adsorption mechanism for the purification of swine wastewater. When the dosage of Mg/Fe/Al-MC was 2.5 g/L and pH was 9.0, the removal efficiency of NH 4 + reached 60 % by forming magnesium ammonium phosphate (MAP). Zeta potential results indicated that the coagulation mechanism of Mg/Fe/Al-MC is primarily based on electrostatic neutralization. After maturing Mg/Fe/Al-MC for 60 h, the content of essential polymeric Fe-Al hydroxide complexes [Fe(III)+Al(III)](b) reached 22.7 %. The insoluble porous particles exhibited a significant adsorption capacity, suggesting its important role in pollutant removal. Under the action of an external magnetic field, the settling velocity of Mg/Fe/Al-MC was significantly faster than that of polyaluminum chloride (PAC), with a much higher clear water yield of 75.5 %. This study provides new pathway for the enhanced pretreatment of swine wastewater.
研究领域:
环境科学
·
废水处理技术
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高影响因子
WATER AIR AND SOIL POLLUTION
·
2016
·Vol. 227
·期 9
·1-11
·
IF 1.551
Wu Hailu,Xu Kaiqin,He Xiaojuan,Wang Xinze
Three macrophyte species, Typha augustifolia ( T. augustifolia ), Phragmites australis ( P. australis ), and Acorus calamus L. ( A. calamus L.), have been grown in hydroponic cultivation systems fed with synthetic wastewater. The experiment was designed as 3 × 2 factorial, with three species and two ratios of NH 4
+ /NO 3
− so as to investigate the nitrogen transformation and nitrogen removal capacity of each species. The nitrogen removal mechanism was further disclosed by comparing biomass production, nitrogen mass balance, and root exudates of the three plant species under different NH 4
+ /NO 3
− ratios. The results indicated there exists a linear relationship, with positive significance ( r = 0.946, p < 0.05), between plant biomass and total nitrogen (TN) removal efficiency; in other words, biomass could best reflect plant ability to remove nitrogen. It is also found that NH 4
+ /NO 3
− ratio could influence plant biomass and root exudates significantly. Additionally, the hydrogen donor and source of energy in denitrification happened in this research were mainly organic acids and soluble sugars, accounting for approximately 50 % of the composition in root exudates.
研究领域:
环境科学
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植物生理学
·
废水处理
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高影响因子
RESOURCES CONSERVATION AND RECYCLING
·
2022
·
IF 13.716
Qing Jiang,Jia Liu,Xiangru Song,Ye Qiu,Jianliang Xue,Yuqiang Shao,Yujie Feng
Human urine contains abundant nutrients, while separately collecting urine can significantly alleviate nutrient loads in existing wastewater treatment facilities. Herein,0020a novel forward osmosis integrated bioelectro-concentration and recovery system (OsBCRS) was developed to recover nutrient ions from urine. NH 4 + and PO 4 3– migrated out from urine and enriched in the internal chamber of OsBCRS driven by the self-generated electric field, which were further concentrated by water extraction from the integrated forward osmosis (FO) process, and finally recovered as struvite. The current density of OsBCRS reached 27.3 A m –3 , which in turn drove the migration of NH 4 + -N (93.7 ± 1.6%) and PO 4 3– -P (94.6 ± 0.8%) out from urine, and these separated nutrients were enriched by 9.4–9.5 times in the internal chambers. Subsequently, these enriched nutrients in the catholyte were 3.2-fold concentrated with 68.6% of volume reduction by FO. The system removed up to 83.4% of NH 4 + -N and 88.8% of PO 4 3– -P, most of which were recovered as struvite taking advantage of reverse-fluxed Mg 2+ . The recovered struvite exhibited similar crystal structure and composition to that of standard struvite. The preliminary operating cost analysis of OsBCRS demonstrated that the revenue, including electricity generation and struvite recovery, could offset the operating cost. This study demonstrated highly efficient enrichment and recovery of nutrient ions from human urine by OsBCRS in a cost-effective way, and would encourage further exploration for nutrients recovery from wastes.
研究领域:
环境工程
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废水处理
·
资源回收
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高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2015
·
IF 2.679
Na Kong,Hui-Hui Zhang,Jie Wang,Zhi-Hong Liu
Two pure dehydrated borogermanates with microporous structure, β -K 2 [B 2 Ge 3 O 10 ] and NH 4 [BGe 3 O 8 ], have been synthesized and characterized by XRD, FT-IR, TG techniques. The molar enthalpies of solution of 2.51 mg of GeO 2 (s)/0.99 mg of H 3 BO 3 (s)/1.98 mg of H 3 BO 3 (s) in 2.00 cm 3 of 1 mol · dm −3 NaOH (aq) were measured, respectively. The molar enthalpies of solution of 2.44 mg of K 2 B 4 O 7 · 4H 2 O (s) and 2.18 mg of NH 4 B 5 O 8 · 4H 2 O (s) in the mixture solvent of 2.00 cm 3 of 1 mol · dm −3 NaOH (aq) which contains 2.51 mg of GeO 2 (s) were measured, respectively. The molar enthalpies of solution of 3.82 mg of β -K 2 [B 2 Ge 3 O 10 ] (s) in the mixture solvent of 2.00 cm 3 of 1 mol · dm −3 NaOH (aq) which contains 0.99 mg of H 3 BO 3 (s), and 3.00 mg of NH 4 [BGe 3 O 8 ] (s) in the mixture solvent of 2.00 cm 3 of 1 mol · dm −3 NaOH (aq) which contains 1.98 mg of H 3 BO 3 ) (s) were also measured, respectively. With the use of standard molar enthalpies of formation for NH 4 B 5 O 8 · 4H 2 O (s), K 2 B 4 O 7 · 4H 2 O (s), GeO 2 (s), H 3 BO 3 (s) and H 2 O (l), the standard molar enthalpies of formation of – (3937.1 ± 4.7) kJ · mol −1 for β -K 2 [B 2 Ge 3 O 10 ] and – (2713.7 ± 6.0) kJ · mol −1 for NH 4 [BGe 3 O 8 ] at T = 298.15 K were obtained on the basis of the appropriate thermochemical cycles, respectively.
研究领域:
无机化学
·
物理化学
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高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Wanxiao Wang,Xiaojie Liang,Jiayu Yang,Zihan Su,Yue Chen,Lijuan Chen,Yuzhu Qian,Bei Long
The development of high-performance anode materials is crucial for aqueous ammonium ion batteries. In the meanwhile, adding an additional redox pair is thought to be a good way to raise the overall electrochemical performance of the system. In this study, a hybrid battery composed of active carbon and BiOI is developed using an NH 4 AC + NH 4 I electrolyte. Electrochemical tests and ex-situ characterization validate the dual processes of NH 4 + (de)intercalation and I − /I 2 redox. Moreover, the NH 4 I additive enhances the charge transfer of the whole battery and changes the phase transition of BiOI in the charge-discharge process. Consequently, this hybrid battery exhibits a long-term cyclic stability (70 % capacity retention after 2300 cycles at 0.2 A g −1 ) and a high specific capacity (196 mA h g −1 at 0.2 A g −1 ). The cell with a high-loading BiOI electrode (12 mg cm −2 ) also exhibits satisfactory performances, reflecting its application potential. This work provides a reference for designing aqueous hybrid battery.
研究领域:
材料科学
·
电化学
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yucai Zhang,Ziwei Gao,Zhi Su
With the massive use of electric vehicles, spent electrode materials with no application value pose a serious threat to resource reserves and ecosystems. Consequently, recycling the spent electrode materials appears to be imminent. This study considered that lithium iron phosphate (LiFePO 4 ) within a water-stabilized voltage could undergo ionic leaching. Ammonium persulfate [(NH 4 ) 2 S 2 O 8 ], which has a high electrode potential, was used for selective leaching of the metal components from the spent LiFePO 4 material. The effects of leaching temperature, time, and the solid-liquid ratio on the leaching effect were investigated. Under optimized conditions, 99.2 % of Li in the spent LiFePO 4 could be leached effectively. The leaching reaction belonged to the typical chemical reaction control, and LiFePO 4 was converted to FePO 4 as Li + was continuously leached into the solution. The leaching of the spent LiFePO 4 using (NH 4 ) 2 S 2 O 8 did not require additional acids or bases to adjust the acidity of the solution, ensuring that the solution had a stable voltage. This strategy predicted that the selective leaching of metal components from the spent LiFePO 4 material could be enhanced using (NH 4 ) 2 S 2 O 8 , providing a certain basis for wet recovery in aqueous systems.
研究领域:
环境科学
·
材料科学
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高影响因子
WATER RESEARCH
·
2024
·
IF 11.4
Chengsi Hou,Haotian Wu,Zhengwei Zhou,Shuai Peng,Ke Wu,Yue Wang,Longqian Xu,Zuofeng Chen,Zhendong Lei,Deli Wu
Despite flow-electrode capacitive deionization (FCDI) is an emerging technology for desalination, contaminant removal, and resource recovery, the application of conventional FCDI in wastewater treatment is hindered by the electrode selectivity and material costs. In this study, we synthesized a low-cost ammonium (NH 4 + ) adsorption electrode material by modifying zeolite using ethylenediaminetetraacetic acid disodium salt (EDTA-2Na). The flow electrode prepared by the mixture of EDTA-zeolite and carbon black exhibits a high selectivity and adsorption capacity for the recovery of NH 4 + from wastewater. The NH 4 + in wastewater passes through the ion exchange membrane and is rapidly adsorbed by the modified zeolite through ion exchange, while Na + is retained in the electrolyte. The decrease in NH 4 + concentration and the increase in Na + concentration in the catholyte lead to a significant change in ion concentration gradient across the membrane. Consequently, the transmembrane selectivity between NH 4 + and Na + reached 3.46. We validated the feasibility of NH 4 + recovery using FCDI with food waste fermentation supernatant. Under optimal operating conditions, 99.15 % of the NH 4 + in the fermentation supernatant was removed, and 95.92 % of the NH 4 + in the electrolyte was stored in the EDTA-zeolite. By gravitational settling, the NH 4 + -rich modified zeolite was separated from carbon black and could be utilized as nitrogen fertilizer. Meanwhile, the mixture of carbon black and brine was used to prepare a fresh electrode suspension. In brief, the FCDI system exhibits a satisfying NH 4 + recovery performance and demonstrates a sustainable wastewater resource recovery strategy.
研究领域:
环境科学
·
材料科学
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PubMed
高影响因子
Molecular Catalysis
·
2024
·
IF 3.9
Jingjing Wang,Zhiwei Liu,Liying Wang,Lu Li,Qian Liu,Zhiwei Liu,Zhenzhu Cao,Yongfeng Zhang,Lin Cheng,Jucai Yang
Combining pollutant degradation with nitrogen fixation has great potential for converting wastewater into suitable irrigation water. This approach purifies water by removing pollutants and provides essential nitrogen fertilizer nutrients to crops. In our investigation, we have introduced a new composite photocatalyst made by ligand anchoring Bi source of Bi 2 MoO 6 to reform BiMOF on the surface of sea-urchin-like Bi 2 MoO 6 spheres through the use of a solvothermal method. The 3D sea urchin spheres containing Bi 2 MoO 6 @BiMOF possess a large specific surface area and close-knit interfacial contacts, enabling ample channels for carrier migration. The composite has displayed impressive proficiency in breaking down pollutants and ammonia production. The elaborate, multi-channel structure within Bi-MOF enabled efficient N 2 or organic molecule adsorption, and Bi 2 MoO 6 generated plentiful photocarriers in reaction to visible light. The diverse interface between Bi 2 MoO 6 and BiMOF guaranteed successful photocarrier separation. The addition of methylene solution increased the yield of nitrogen fixation to 3080 (μmol/L/h/g), which is 15 times higher than that achieved in pure water. As the old saying goes, ``Falling red is not an unfeeling thing, it turns into spring mud and protects the flowers even more'', here although the addition of N 2 leads to a decrease in the degradation efficiency of methylene blue (MB), the addition of methylene blue (MB) consumes more holes and thus generates more photogenerated electrons, which greatly contributes to the production of NH 4 + and thus its application in agriculture. Additionally, These valuable insights highlight the possibility of transforming contaminated water into nutrient-rich, clean irrigation water for agricultural sustainability.
研究领域:
环境科学
·
材料科学
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高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Na Wang,Shiqiang Hao,Yan Xiong,Mingyang Li,Kunjie Liu,Christopher Wolverton,Yonggang Wang,Jing Zhao,Quanlin Liu
The efficient broad-band emission from low-dimensional metal halides has garnered significant interest. However, most of these materials exhibit poor stability at the operating temperature of light-emitting diodes. In this study, using the solution method (temperature lower than 90 °C), a new compound (NH4)3In0.95Sb0.05Cl6 was obtained with the structure in the Pnma space group featuring unit-cell parameters of a = 12.3871(4) Å, b = 24.9895(9) Å, and c = 7.7844(3) Å. (NH4)3In0.95Sb0.05Cl6 can be prepared by doping (NH4)2InCl5·H2O when the Sb3+ feeding ratio is in the range of 30–80%. Thermal analysis reveals that (NH4)3In0.95Sb0.05Cl6 is stable up to 320 °C. (NH4)3In0.95Sb0.05Cl6 exhibits broad-band yellow-white emission with extremely high internal and external photoluminescence quantum yields of 93 and 77%, respectively. Interestingly, (NH4)3In0.95Sb0.05Cl6 displays remarkable resistance to thermal quenching, retaining 83% of its initial photoluminescence intensity at 80 °C. A white light-emitting diode is fabricated by combining (NH4)3In0.95Sb0.05Cl6 with a commercial phosphor, and a high color rendering of 92.8 was obtained. This work presents an environmentally friendly, efficient, stable UV-excited broad-band emission material for potential solid-state lighting applications.
研究领域:
材料科学
·
光学
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PubMed
高影响因子
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