ENERGY CONVERSION AND MANAGEMENT
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2025
·
IF 10.9
Yujun Wei,Jing Zhang,Zhijian Huang,Qixu Yu,Guanwei Liang,Longshi Rao,Xujiang Chao,Jieling Li,Jianing Wu,Shudong Yu
Interfacial solar steam generation has emerged as a promising approach for alleviating global freshwater shortages. Growing research interest focuses on harnessing sustainable biomass materials like wood to achieve dual-functional systems that produce freshwater while harvesting evaporation-induced energy for electricity generation. In this study, a laser-scribed wood photoabsorber is proposed to enable efficient co-generation of fresh water and electricity. Through brush-coating of cobalt nitrate solution followed by laser direct writing, a composite layer of graphite-Co 3 O 4 nanoparticles was successfully fabricated on the surface of basswood. Both cobalt salt coating and delignification processing were demonstrated to enhance the evaporation and electricity output performance of laser-engineered wood photoabsorbers. The device realized an evaporation rate and an efficiency of 1.71 kg m -2 h −1 and 92.8 % under 1 sun irradiation, respectively. Under ambient conditions without light irradiation, a single device (2 × 2 × 1 cm 3 ) was able to produce an open-circuit voltage of ∼336 mV and a stable short-circuit current of ∼30 μA in pure water. Furthermore, when multiple devices were connected in series, the generated voltage was sufficient to light a light-emitting diode or power an electronic calculator. Through laser-scribing of biomass materials, this study develops a sustainable solar interfacial evaporator capable of simultaneous freshwater production and electricity generation.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Haiqiang Bai,Biao Liu,Ling Kang,Yanhong Wang,Jing Bai,Santosh Kumar Verma,Yunhua Xu
The ability of magnesium-based hydrogen storage materials to store and release hydrogen is hampered by their relatively slow rates. To address this, Mg-x% Co (x = 5, 10, 15) magnesium-rich hydrogen storage alloys were fabricated using reactive ball milling. The resulting alloys were multiphase, composed of Mg, Co, MgCo₂, and Mg₂CoH₅, which provided nucleation sites and improved hydrogen uptake. The reduced particle size and surface microcracks and pores enhanced hydrogen diffusion. The Mg-15 %Co alloy had the ability to take in 4.72 wt% hydrogen in 1 min when the temperature was set at 350°C. Hydrogenation resulted in the formation of a biphasic structure composed of Mg₂CoH₅ and Mg₆Co₂H₁₁. This structure destabilized the Mg-H bond and improved the kinetics of hydrogen release. The hydrogen release capacity first increased and then decreased with Co content, with Mg-10 %Co showing the best performance. Due to the combined action of ball milling and Co catalysis, the Mg-10 %Co alloy had an activation energy for hydrogen release of 113.65 kJ/mol, making it the alloy with the lowest such activation energy in the set. Differential scanning calorimetry (DSC) analysis confirms that cobalt addition reduces the hydrogen release peak temperature of Mg by 16.58–29.67 °C, with the Mg-10 % Co alloy exhibiting peak temperatures of 410.72–425.53 °C, attributed to synergistic decomposition of MgH₂ with intermediate hydrides like Mg₂CoH₅ and Mg₆Co₂H₁₁. The findings of this study indicate that alloying Mg-based alloys with transition elements while performing ball milling is a practical method for enhancing their hydrogen storage and release kinetics.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
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IF 9.4
Yujie Cao,Fei Gao,Yaqian Yuan,Runchi Wang,Shu Xu,Chong Geng
Cesium lead halide perovskite nanocrystals (IPNCs) exhibit excellent optoelectronic properties but are susceptible to degradation in practical environments due to their ionic surface and unstable ligand capping. Here, we propose a post-synthesis surface passivation strategy for CsPbX 3 (X = Br, I) IPNCs by employing combined zinc halide and zinc phenylbutyrate (Zn(PA) 2 ) as surface ligands. ZnBr 2 fills surface halide vacancies on IPNCs, resulting in high photoluminescence efficiency, whereas Zn(PA) 2 stabilizes IPNCs by substituting surface ammonium ligands. Additionally, the −PA capping endows IPNCs with high solubility in polystyrene (PS), enabling the direct fabrication of highly efficient and uniform IPNCs-PS color conversion films through in situ polymerization of the IPNC-styrene solution. The resulting IPNCs-PS films displayed significantly enhanced stability, retaining excellent PL persistence after 1000 h of photoaging. This novel ligand and modification method presents a promising strategy for improving the efficiency and stability of IPNCs, facilitating their potential applications in display backlight and other optoelectronic applications.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Xue Jing,Dong Xue,Liu Chunxiao,Li Jiawei,Dai Yizhou,Xue Weiqing,Luo Laihao,Ji Yuan,Zhang Xiao,Li Xu,Jiang Qiu,Zheng Tingting,Xiao Jianping,Xia Chuan
Using renewable electricity to convert CO 2 into CO offers a sustainable route to produce a versatile intermediate to synthesize various chemicals and fuels. For economic CO 2 -to-CO conversion at scale, however, there exists a trade-off between selectivity and activity, necessitating the delicate design of efficient catalysts to hit the sweet spot. We demonstrate here that copper co-alloyed with isolated antimony and palladium atoms can efficiently activate and convert CO 2 molecules into CO. This trimetallic single-atom alloy catalyst (Cu 92 Sb 5 Pd 3 ) achieves an outstanding CO selectivity of 100% (±1.5%) at −402 mA cm −2 and a high activity up to −1 A cm −2 in a neutral electrolyte, surpassing numerous state-of-the-art noble metal catalysts. Moreover, it exhibits long-term stability over 528 h at −100 mA cm −2 with an FE CO above 95%. Operando spectroscopy and theoretical simulation provide explicit evidence for the charge redistribution between Sb/Pd additions and Cu base, demonstrating that Sb and Pd single atoms synergistically shift the electronic structure of Cu for CO production and suppress hydrogen evolution. Additionally, the collaborative interactions enhance the overall stability of the catalyst. These results showcase that Sb/Pd-doped Cu can steadily carry out efficient CO 2 electrolysis under mild conditions, challenging the monopoly of noble metals in large-scale CO 2 -to-CO conversion.
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BIOCHEMICAL ENGINEERING JOURNAL
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2025
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IF 3.8
Xinying Sun,Wei Xiao,Mengying Wu,Fuqiang Liu,Jiaxin Li,Lei Liu,Jing Wu,Keke Cheng,Jianan Zhang
Microbial fermentation technology has advanced rapidly in the field of green chemical production, showcasing broad application prospects. However, current techniques still face challenges such as low carbon utilization efficiency and excessive accumulation of by-products. Additionally, during the fermentation process, carbon sources are released in the form of CO₂, leading to significant carbon loss. In this study, Enterobacter cloacae CICC 10011 was metabolically engineered to achieve the co-production of 2,3-butanediol (2,3-BDO) and lactic acid, while reducing carbon dioxide emissions and improving carbon utilization. By knocking out key genes ( pflB and iclR ), the pathways for the formation of by-products such as formate, acetate, and ethanol were attenuated, thereby optimizing carbon flux toward the target products. The results showed that under optimal fermentation conditions (aeration rate of 0.4 vvm, pH 6.5, temperature 35 °C), the double-gene deletion strain ECΔpflBΔiclR achieved lactic acid and 2,3-BDO (mixture of stereoisomers) concentrations of 51.03 g/L and 10.44 g/L, respectively, with a total target product yield of 1.76 mol/mol. Compared to the wild-type strain, the production of by-products succinate, acetate, and ethanol was reduced by 70.04 %, 47.10 %, and 89.76 %, respectively. Additionally, CO₂ emissions were reduced by 68.92 %, and carbon conversion efficiency improved by 116.16 %. This strategy provides a novel approach for carbon emission reduction and the co-production of high-value chemicals in fermentation processes.
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Energy Storage Materials
·
2023
·
IF 20.4
Zezhuo Li,Yaqi Liao,Yueda Wang,Jianlong Cong,Haijin Ji,Zhimei Huang,Yunhui Huang
Severe Zn dendrite and H 2 evolution reaction (HER) derived from high activity of free H 2 O hinder the commercialization of aqueous Zn-ion batteries (AZIBs). Regulating the Zn 2+ solvation structure is a straightforward way to solve the above issues. Herein, a polar solvent , tetramethylurea (TMU), is designed as a co-solvent in the aqueous electrolyte , which can form strong interactions with Zn 2+ and H 2 O via the -C O group, conducing to reshape the Zn 2+ -solvation structure and interrupt the intrinsic hydrogen-bonds (H-bonds) of H 2 O. Furthermore, the steric-repulsion effect of -N(CH 3 ) 2 prevents H 2 O from entering the primary solvation structure. Such synergistic effects decrease the H 2 O activity, and hence suppress Zn dendrite and HER. As a result, Zn||Cu cells with TMU-based electrolyte can stably run over 6000 cycles with 99.8% Columbic efficiency at a current density of 10 mA cm −2 , and the cumulative capacity of Zn||Zn cell reaches up to 5 Ah cm −2 , exceeding most of the reported works involving co-solvent. The Zn||NH 4 V 4 O 10 battery , under an N/P ratio of 4, can run for 300 cycles with 68% capacity retention, much better than that without TMU (3.9%). Our work reveals that rationally designing the electrolyte components at the molecular level is essential in stabilizing the Zn anode and achieving high-performance AZIBs.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Jiaqi Wang,Shuangjun Li,Jingjing Zhao,Kaihong Liu,Bo Jiang,Hexing Li
Photothermal catalysis of CO 2 hydrogenation holds great potential in achieving carbon neutrality . However, the rational design of cost-effective photothermal catalysts with high performance for CO 2 hydrogenation is an ongoing challenge. Herein, we employed CuCo y BOₓ composite catalysts by incorporating both CuBOₓ and amorphous CoBOₓ to efficiently catalyze the CO 2 hydrogenation. Besides the high selectivity (98.0%), the optimized CuCo 5 BO x demonstrated a remarkable CO yield of 124.7 mmol g⁻¹ h⁻¹ under illumination at 300°C, which was 3 times higher than the traditional thermocatalysis. Experimental results and theoretical calculations demonstrated CuBOₓ acted as a photocatalyst , donating electrons to CoBOₓ active sites. Coupling boron-oxygen species with CuCo bimetallic-oxides synergically enhanced the CO 2 adsorption capacity and accelerated charge transfer, thereby enhancing the photothermal synergistic effect and consequently boosting the catalytic activity. This study establishes an approach for the rational design of non-precious metal-boride catalysts, enabling efficient photothermal conversion of CO 2 into CO under mild conditions.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Dexin Chen,Yunxuan Ding,Xing Cao,Licheng Sun
Electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) offers a sustainable pathway for biomass valorization and green H 2 generation, yet its multi-electron transfer process demands efficient catalysts to overcome kinetic bottlenecks. Herein, we demonstrate that the spatial configuration of Co species in Ni hydroxides (Ni(OH) 2 ) dictates alcohol oxidation activity by modulating interfacial electron transfer dynamics. Engineered heterostructured Co 3 O 4 -Ni(OH) 2 outperforms planar NiCo layered double hydroxide (LDH), achieving 106 % higher current density with nearly 100 % yields and Faradaic efficiencies of the target product. Experimental and theoretical results reveal that the heterointerface optimizes alcohol adsorption and accelerates electron transfer kinetics via interfacial charge distribution. Engineering of interfacial electronic properties enables the catalyst to be versatile for the electrooxidation of variant substituted alcohol substrates. Those insightful results establish a paradigm for catalyst design methodology in biomass upgrading through regulating charge transfer pathways.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Zhiguo Dong,Qian Chen,Xixi Ma,Yun Chen,Zixuan Wu,Weiwei Li,Jinfeng He,Chuanrun Li,Liang Ge,Haiyang Yan
In addition to the characteristics of monovalent anion perm-selective membrane (MAPM), the separation efficiency between monovalent and divalent anions (e.g., Cl − /SO 4 2− ) can be potentially influenced by the co-ion transport especially through cation exchange membranes (CEMs) in selectrodialysis. However, in such a process, the separation mechanism remains unclear and needs to be addressed. Hence, in this study, the role of co-ion transport in selectrodialysis for mono/divalent anion separation was systematically investigated in a new perspective. Results indicated that the CEM (e.g., SYMC membrane) that has a loose structure, a low ion exchange capacity, and a high transport number for SO 4 2− (0.133) exhibited a high co-ion flux of SO 4 2− and thus a high selectivity of Cl − /SO 4 2− (17.6) in selectrodialysis. Apart from the CEM properties, the paired cation (e.g., K + and Na + ) that has a high diffusion coefficient exhibited a high co-ion transport of SO 4 2− and thus a high selectivity (17.6−18.0). In addition, a high current efficiency (77.3 %), and a low operating expense (0.03 $ kg −1 ), capital expenditure (0.35 $ kg −1 ), and total cost (0.38 $ kg −1 ) can be obtained. These findings suggest that co-ion transport of SO 4 2− through CEM is beneficial for the selective separation of mono/divalent anions in selectrodialysis, offering practical guidance for industrial application of MAPMs to achieve a high selectivity.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Mengfei Zhang,Yu Zhang,Zhenkang Sun,Xiaoke Li,Alex J. Brown,Jiaming Sun,Qi Yang,Shanwen Tao,Jianguo Liu
Electrocatalytic water splitting is a sustainable route to high-purity hydrogen, yet its efficiency is hindered by the sluggish kinetics of the oxygen evolution reaction (OER). Replacing OER with the thermodynamically favorable ammonia oxidation reaction (AOR) significantly reduces the energy input required for hydrogen production while simultaneously addressing ammonia utilization. However, progress is limited by the need for expensive noble metal catalysts like PtIr/C and the poor performance of non-noble alternatives. Herein, a series of perovskite oxide catalysts is reported with tunable B-site configurational entropy. Among them, the high-entropy La 0.7 Sr 0.3 (Ni 0.2 Cu 0.2 Co 0.2 Mn 0.2 Fe 0.2 )O 3-δ (LS5B) catalyst demonstrates exceptional activity and stability for the ammonia-water co-oxidation reaction (AWOR), outperforming lower-entropy analogs. The enhanced performance is attributed to its entropy-stabilized structure, which generates abundant surface oxygen vacancies and suppresses atomic diffusion, increasing both active site density and structural durability. Density functional theory (DFT) calculations reveal that the high-entropy configuration lowers the energy barrier for ammonia adsorption and facilitates intermediate formation. In a practical ammonia-water co-electrolyzer, LS5B delivers a current density of 2.6 A·cm −2 at 2.0 V, surpassing PtIr/C and representing the best performance to date. A stable operation over 90 h at ampere-level current demonstrates LS5B's potential for scalable, efficient green hydrogen production via ammonia-water co-electrolysis.
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Nanomaterials
·
2025
·Vol. 15
·期 18
·1431
·
IF 4.3
Junda Zhao,Guanhua Liu,Xiaobing Zheng,Liya Zhou,Li Ma,Ying He,Xiaoyang Yue,Yanjun Jiang
Biocatalytic nanomembranes have emerged as promising platforms for micropollutant remediation, yet their practical application is hindered by limitations in removal efficiency and operational stability. This study presents an innovative approach for fabricating highly stable and efficient biocatalytic nanomembranes through the co-immobilization of horseradish peroxidase (HRP) and glucose oxidase (GOx) within a covalent organic framework (COF) nanocrystal. Capitalizing on the dynamic covalent chemistry of COFs during their self-healing and self-crystallization processes, we achieved simultaneous enzyme immobilization and framework formation. This unique confinement strategy preserved enzymatic activity while significantly enhancing stability. HRP/GOx@COF biocatalytic membrane was prepared through the loading of immobilized enzymes (HRP/GOx@COF) onto a macroporous polymeric substrate membrane pre-coated with a polydopamine (PDA) adhesive layer. At HRP and GOx dosages of 4 mg and 4.5 mg, respectively, and a glucose concentration of 5 mM, the removal rate of bisphenol A (BPA) reached 99% through the combined functions of catalysis, adsorption, and rejection. The BPA removal rate of the biocatalytic membrane remained high under both acidic and alkaline conditions. Additionally, the removal rate of dyes with different properties exceeded 88%. The removal efficiencies of doxycycline hydrochloride, 2,4-dichlorophenol, and 8-hydroxyquinoline surpassed 95%. In this study, the enzyme was confined in the ordered and stable COF, which endowed the biocatalytic membrane with good stability and reusability over multiple batch cycles.
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ChemistrySelect
·
2025
·Vol. 10
·期 36
·e04484
·
IF 2
Xiaoqian He,Peicheng Jiang,Qilin Wang,Xinyi Luo,Shu Chen
Organic water pollution poses a global challenge. The unique properties of transition metal carbides (MXenes) make them ideal candidate adsorbents for removing water contaminants. However, limitations in the types and quantities of surface functional groups on MXenes, coupled with their inherent instability, have restricted their application in adsorbing organic dyes such as methyl blue. This study prepared sulfur–nitrogen co-doped MXenes (S─N─MX) through thermal annealing co-doping of MXenes with thiourea. This method successfully introduced sulfur and nitrogen elements as functional groups into the MXene structure, increasing the variety and quantity of surface functional groups and significantly enhancing the number of active sites. This process effectively suppresses nanolayer stacking, enhances structural stability, and substantially increases the material's adsorption capacity. Langmuir adsorption isotherm measurements reveal a maximum adsorption capacity of 239.8 mg·g −1 at 298 K and pH = 9. The material achieves efficient adsorption of methylene blue through electrostatic interactions, Lewis acid–base interactions, and hydrogen bonding. The incorporation of sulfur and nitrogen elements provides a protective effect, ensuring the composite adsorbent maintains excellent stability during adsorption–desorption cycles. After five adsorption-desorption cycles, its adsorption capacity retained over 85%. Graphical S–N co-doped MXene is synthesized via thermal annealing with thiourea, which introduces abundant surface functional groups and enhances active sites. This adsorbent exhibits a high methylene blue adsorption capacity of 239.8 mg·g - 1 through electrostatic attraction, Lewis acid–base interaction, and hydrogen bonding. It also demonstrates excellent recyclability, retaining over 85% efficiency after five cycles.
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