Catalysts
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2026
·Vol. 16
·期 8
·689
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IF 4.5
Zhongqiang Bao,Yiwei Zhang,Zhenhua Ji,Zhenguo Li,Peng Zhang,Ding Luo,Zhanming Chen,Han Gao,Lei Zhu,Hao Chen
Supported Pt catalysts are highly active for the selective catalytic oxidation of ammonia (NH3-SCO), but their practical use is limited by poor N2selectivity and insufficient hydrothermal durability under high-temperature exhaust conditions. Herein, we report a composition-regulated high-entropy oxide interface strategy to stabilize Pt–Cu dual sites and steer NH3oxidation toward selective N2formation. A series of fluorite-type Ce-based high-entropy oxides, including CeZrLaPrYOx, CeSmLaPrYOx, and CeSnLaPrYOx, were constructed as thermally robust supports for Pt and Cu loading. Among them, PtCu/HEO-Zr calcined at 1000 °C exhibits the best NH3-SCO performance, achieving 90% NH3conversion at 260 °C while maintaining N2selectivity above 80% over a broad temperature window of 100–300 °C under a high weight hourly space velocity of 100,000 mL·g−1·h−1. More importantly, after harsh hydrothermal aging at 800 °C with 10 vol% H2O for 12 h, the catalyst shows negligible activity loss and nearly unchanged N2selectivity, demonstrating exceptional structural and catalytic robustness. Structural and surface analyses reveal that Zr incorporation optimizes the fluorite high-entropy lattice, increases oxygen vacancy concentration, promotes lattice oxygen mobility, strengthens surface acidity, and enriches active Cu2+species, thereby enhancing the interfacial cooperation between NH3activation and oxygen-assisted intermediate conversion. In situ DRIFTS further reveals that PtCu/HEO-Zr favors an Olat-assisted internal selective catalytic reduction pathway, in which adsorbed NH3is activated to -NH2species and subsequently reacts with lattice oxygen-derived intermediates to form N2O22−-like species that decompose into N2and H2O. Meanwhile, the formation of nonselective NOxand N2O products is suppressed. This work highlights high-entropy oxide-supported Pt–Cu interfaces as a promising platform for designing hydrothermally durable and N2-selective NH3-SCO catalysts.
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Advanced Energy Materials
·
2026
·
IF 25.5
Wendong Zhu,Qiuxiang Wang,Haoming Xing,Jing Zhang,Yuanyuan Wang,Yuhong Xu,Jiaxing Xiong,Rong Xuan,Wenwu Xu,Da Chen,Xiaohui Liu,Like Huang,Yuejin Zhu,Changlei Wang
Solution-processed SnO 2 nanoparticles are promising nonfullerene electron transport materials, yet their performance in low-bandgap (LBG) tin-lead perovskite solar cells (Sn-Pb PSCs) is hindered by inadequate charge transport and interface energy misalignment. To address these issues, we developed a SnO 2 -graphene quantum dot (GQD) electron transport layer (ETL) by functionalizing solution-processed SnO 2 with GQDs. Both theory calculations and experiments indicate the electron-bridging role of GQDs in perovskite/GQD-SnO 2 heterojunction, greatly facilitating directional charge transfer. Moreover, GQDs play a dual role by passivating defects on both SnO 2 and perovskite surfaces, while optimizing the energy level alignment at this critical interface. Consequently, the optimized LBG Sn-Pb PSCs exhibit significantly enhanced voltage and fill factor, achieving a champion efficiency of 23.38% with robust stability under ISOS-L-1 and ISOS-D-2 protocols. When integrated into all-perovskite tandem solar cells, the optimized device delivers a promising efficiency of 29.40%. This work enables the first viable inorganic ETL for realizing high-performance Sn-Pb PSC and its tandem applications.
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Journal of Energy Chemistry
·
2026
·
IF 15.6
Hewei Zhang,Zifan Zhu,Wei Wu,Jiajian Lin,Jiabei Song,Yutong Niu,Jinyu Ye,Abdullah N. Alodhayb,Yixi Zhuang,Zhou Chen,Wei Cheng
High-entropy nanomaterials have attracted tremendous research attention owing to their unique physical and chemical properties. Conventional methods for the synthesis of high-entropy nanomaterials often necessitate high temperatures and struggle with achieving well-defined morphologies. Here, we report room-temperature synthesis of high-entropy metal sulfide nanobelts through sequential cation exchange reactions between the pre-synthesized cobalt sulfide nanobelts and various metal ions in aqueous solution. The cation exchange reaction follows the hard and soft acid-base theory, which guides us to design and produce a variety of binary to high-entropy octonary metal sulfide nanobelts with uniform distribution of elements. The high-entropy quinary (CoCuSnFeIn)S x nanobelts demonstrate significantly enhanced electrocatalytic performance for the nitrate reduction reaction in comparison to low- and medium-entropy metal sulfide nanobelts, due to the increased configurational entropy and synergistic benefits of the incorporated metal elements. Our work provides a facile yet powerful synthesis platform for designing and synthesizing a diverse array of multi-metal/high-entropy sulfide nanomaterials with controlled compositions for electrocatalytic applications. A room-temperature sequential cation exchange strategy is developed to synthesize high-entropy metal sulfide nanobelts. These nanobelts exhibit exceptional electrocatalytic activity and selectivity for the nitrate reduction reaction to ammonia. Download: Download high-res image (234KB) Download: Download full-size image
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Matter
·
2026
·
IF 15.7
Bangxin Li,Yiqian Du,Jiachen Sun,Xiaowei Lv,Xiaodi Zhou,Jiacheng Cui,Guanyu Chen,Hualiang Lv,Renchao Che
Conventional electromagnetic materials are functionally limited, lack real-time switching, and require centimeter-scale dimension and mechanical properties, posing challenges in complex and extreme applications. Here, we report a single-atom-anchored two-dimensional material synthesized via the general thermal splitting of heavy 5p -series nanoparticles onto graphitic carbon nitride (g-C 3 N 4 ) nanosheets. We demonstrate that the incorporation of heavier single atoms induces strong electronic correlations in quantum phases, leading to anomalous electronic phenomena such as band flattening, inversion, and densely packed, continuous van Hove singularities—features that are challenging to conventional approaches. The electromagnetic transistor enables dynamically programmable control over electromagnetic signals, including selective transmission, absorption, and shielding. This functionality is achieved with ultra-low voltage operation (<1.0 V) and a highly miniaturized transistor thickness of ∼800 μm, nearly an order of magnitude smaller than conventional materials. Furthermore, this transistor maintains stable performance under mechanical deformation and across a broad temperature range (300–900 K), ensuring long-term reliability in extreme conditions.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·122126
·
IF 7.5
Xiaojie Zhang,Keyi Liu,Zihan Zhang,Hong Peng,Yuefa Gong
Efficient and simultaneous removal of chromium(VI) oxyanions and heavy metal cations from complex electroplating rinse wastewater remains a major challenge. In this study, polyethyleneimine-chitosan/imidazolium-polysulfone composite beads (denoted as CSPF) were fabricated by integrating polyethyleneimine-modified chitosan powder (CSPI) with imidazolium-functionalized polysulfone (IMPSF) via a phase inversion method. The resulting CSPF beads was applied to simultaneously remove Cr(VI) and Cu(II) from simulated electroplating rinse wastewater. In a single-metal system at pH 5, CSPF exhibited maximum adsorption capacities of 89.3 mg g −1 for Cu(II) and 251.4 mg g −1 for Cr(VI). In the Cr(VI)/Cu(II) binary system, a notable co-removal synergy was observed, with adsorption capacities of CSPF increasing by 193.3% for Cu(II) and 39.7% for Cr(VI) compared to the single-metal system. The presence of other coexisting inorganic anions further significantly enhanced the adsorption of Cu(II) by CSPF. The promotion effect of different anions on Cu(II) adsorption follow the order of HCrO 4 − > H 2 PO 4 − ≈ SO 4 2 − >> NO 3 − ≈ Cl − . This trend is consistent with the extent to which they elevate the final solution pH and Cu 2p 3/2 binding energy after adsorption, and is further confirmed by DFT calculations. These results indicate that a unique electrostatic shielding–proton transfer synergistic mechanism is the key factor responsible for the synergistic co-removal of Cu(II) and Cr(VI) from complexed wastewater. Column cycling experiments demonstrated that CSPF could continuously and efficiently remove both Cu(II) and Cr(VI) from the simulated electroplating rinse wastewater, along with good reusability.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Yue Wang,Weimin Liu,Han Qin,Baoning Wang,Xiangming Wang,Yang Zhao,Feng Yan,Bo Geng,Yujin Chen,Xianbo Yu
Developing efficient, durable non-noble bifunctional electrocatalysts is key for overall water splitting. Herein, we present a hierarchical FeNi LDH/SnS 2 heterojunction array integrating cation vacancy engineering with heterointerface construction. The multilevel architecture comprises a conductive carbon cloth skeleton, SnS 2 nanosheet scaffolds, and cation-vacancy-rich FeNi LDH nanosheets. Vacancies modulate the electronic structure of FeNi LDH, while the heterointerface induces directional electron transfer to SnS 2 . Density functional theory calculations reveal elevated density of states near the Fermi level and optimized d -band center for balanced intermediate adsorption/desorption. Consequently, the cation-vacancy-rich FeNi LDH/SnS 2 electrode achieves outstanding bifunctional activity in alkaline media, with overpotentials of only 100 mV (hydrogen evolution reaction) and 197 mV (oxygen evolution reaction) at 10 mA cm −2 . An overall water splitting electrolyzer requires just 1.52 V to reach 10 mA cm −2 and operates stably over 140 h, surpassing Pt/C||IrO 2 . This work offers an effective strategy for designing high-performance bifunctional electrocatalysts.
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JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Tianci Chen,Hong Liu,Fuling Wu,Ping Li,Shengqiong Fang,Ming Xie,Wenyuan Ye,Yinhua Wan,Jiuyang Lin
In the context of sustainable rare earth hydrometallurgy, the generated high-acid-content stripping solution represents a valuable secondary resource rather than a waste stream. Diffusion dialysis (DD) technology based on anion exchange membranes (AEMs) offers an energy-efficient and environmentally benign approach for acid recovery. However, the development of AEMs with simultaneously high acid permeability and excellent rare earth ion rejection remains a major challenge due to the intrinsic permeability-selectivity trade-off. Herein, a facile membrane fabrication strategy integrating nonsolvent-induced phase separation (NIPS) and one-step modification method is proposed to construct porous AEMs with tunable microstructure and enhanced diffusion dialysis performance. A chloromethylated polysulfone (CMPSF) porous substrate membrane was first prepared via NIPS and subsequently modified using N,N,N′,N″,N″-pentamethyldiethylenetriamine as bifunctional reagent, enabling simultaneous quaternization and crosslinking in a single step. The resulting hierarchical porous architecture, combined with a robust crosslinked ion-transport network, effectively promotes proton transport while suppressing the diffusion of rare earth ions. Consequently, the optimized porous PPSF-3 AEM exhibits an outstanding proton dialysis coefficient (40.4 × 10 −3 m h −1 ) and an excellent proton/rare earth ion selectivity ( S H + / La 3 + of 3231.9), which are 9.4 times and 5.7 times higher than those of the commercial DF-120 AEM, respectively. This enhanced separation performance is attributed to the synergistic effects of increased free volume, optimized ion-conduction pathways, and strengthened Donnan exclusion arising from the tailored porous-crosslinked structure. This study provides a simple and cost-effective strategy in fabricating high-performance porous AEMs for efficient acid recovery from rare earth stripping solutions through diffusion dialysis.
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MATERIALS LETTERS
·
2026
·
IF 2.6
Xiaojun Zhu,Fengxia Yang,Hao Sun,Xiaofei Dong,Yan Li
Memristors are key to brain-inspired neuromorphic computing, controllable modulation of volatile and non-volatile resistive switching characteristics is crucial for expanding their multi-functional applications. Herein, an Ag/CZTS-MoO 2 /Mo memristor is proposed, which exhibits bias-modulated transition between volatile and non-volatile resistive switching. Volatile switching behavior is observed at low bias (≤1.0 V), while stable non-volatile switching emerges at elevated biases (≥1.4 V) with an On/Off ratio of ∼10 3 . Moreover, the set voltage decreases from −0.70 V to −0.46 V as the bias voltage rises, accompanied by improved switching uniformity and stability. This phenomenon originates from the formation of more robust conductive filaments within the resistive switching layer under large applied bias. These findings demonstrate an effective strategy to modulate volatile and non-volatile switching based on CZTS, and highlight the great potential of CZTS for multifunctional memory and neuromorphic applications.
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NEW JOURNAL OF CHEMISTRY
·
2025
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IF 2.5
Rong Li,ZhiHui Hao,Xiangwei Zhao,Huilin Zhou,Zhimin He,Qin Dong,Wei Hong,Xinglong Gou
Metal sulfides, such as SnS2, have been extensively studied as separator modifiers in lithium–sulfur batteries (LSBs) owing to their dual functionality in chemically anchoring lithium polysulfides (LiPSs) and catalytically facilitating redox reactions. Nevertheless, poor electrical conductivity and limited catalytic efficiency restrict their practical implementation for LiPS transformation kinetics. To address these issues, we prepared Mo-doped SnS2 (Mo–SnS2) nanosheets with sulfur vacancies through a rapid one-pot formamide-assisted method. The incorporation of Mo heteroatoms not only improves conductivity but also induces favorable sulfur vacancies, synergistically promoting both adsorption and electrocatalytic conversion of LiPSs. The Li–S cell with a Mo–SnS2 nanosheet-modified separator delivers a remarkable initial capacity of 1007.5 mAh g−1 at 1C, maintains 799.5 mAh g−1 after 600 cycles with a low fading ratio of 0.034% per cycle, and demonstrates a favorable rate performance of 591.9 mAh g−1 at 5C. This defect engineering strategy through heteroatom doping offers a promising approach to concurrently mitigate the polysulfide shuttle effect and enhance the reaction kinetics in sulfur-based energy storage systems.
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CATALYSIS LETTERS
·
2025
·Vol. 155
·期 8
·1-14
·
IF 2.4
Jiang Xin,Yang Ye,Zhou Zhangbing,Song Hanbing,Wang Jialing,Qin Yucai,Song Lijuan
Metal clusters encapsulated within zeolites are widely utilized in various catalytic processes due to their high metal dispersion and excellent stability. However, the limited and uncontrollable encapsulation of metal content poses significant challenges for further development. To address this issue, this study introduces Sn 2+ into the framework of Beta zeolite to achieve controlled encapsulation of Pt clusters. Multiple characterizations reveal that the Sn species occupy some of the silanol sites or substitute framework Al³⁺ species within the Beta zeolite, predominantly existing in the form of Sn-O-Si. These framework Sn species effectively stabilize the Pt clusters, thereby not only enhancing the dispersion of Pt clusters but also increasing the encapsulation capacity of the Beta zeolite for Pt clusters. By adjusting the amount of Sn added, precise control over the content of encapsulated Pt species in the Beta zeolite can be achieved. Both excessive and insufficient amounts of Sn are detrimental to the encapsulation of Pt clusters, with the optimal encapsulation effect observed when the Pt to Sn ratio is 1:2. This synthesis strategy has been successfully extended to the preparation of Pt clusters encapsulated in Beta zeolite without Al addition. The prepared catalyst demonstrates excellent catalytic activity and remarkable stability in propane dehydrogenation. These findings provide valuable theoretical insights for the design and development of the zeolite-encapsulated metal cluster catalysts. Graphical The controllable encapsulation of Pt clusters within Beta zeolites was achieved by controlling the incorporation of Sn species into the Beta zeolite framework
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Zunhong Chen,Zhenguo Yu,Shuai Kan,Junhong Jin,Shenglin Yang,Guang Li,Jingjing Zhang
Anion exchange membrane water electrolysis (AEMWE) is emerging as a next-generation technology for hydrogen production due to its cost-effectiveness and high efficiency. However, a key challenge remains for anion exchange membranes (AEMs), which suffer from limited mechanical stability when the temperature of the feed solution fluctuates. One potential solution involves reinforcing AEMs with robust inorganic fillers, though issues related to interfacial compatibility and ionic conductivity still persist. In this study, we address these challenges by incorporating rigid dual-functional Fe 3 O 4 nanoparticles into soft poly(styrene- b -(ethylene- co -butylene)- b -styrene) (SEBS) polymers under a magnetic field. The chemical crosslinking between the chloromethylated Fe 3 O 4 with chloromethylated SEBS improves interfacial compatibility, facilitating better dissipation of mechanical stress. Additionally, the in-situ formation of quaternary ammonium functional groups at the crosslinking points imparts anion-conducting capabilities to the Fe 3 O 4 . The magnetic response of Fe 3 O 4 further promotes microphase separation, leading to the formation and alignment of ion-transporting hydrophilic channels. As a result, the hybrid membranes achieve a OH − conductivity of 75.9 mS cm −1 at 80 °C and exhibit a swelling ratio of 5.6% at the same temperature, along with enhanced mechanical strength (>11 MPa under fully-hydrated conditions). Furthermore, in AEMWE single-cell tests, the membranes enable a current density of 1070 mA cm −2 at 2.0 V, corresponding to a 1.6-fold increase compared to quaternized SEBS. This novel structural design offers promising solutions for the development of high-performance polyelectrolyte conductive membranes, with broad applications in AEMWE and beyond.
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COLLOIDS AND SURFACES B-BIOINTERFACES
·
2023
·
IF 5.8
Wei Guo,Lijun Liang,Yaxu Zhao,Congyi Zhao,Xiong Lu,Yunpeng Cao,Faming Gao
In this study, the SnO 2 /Nb 2 CT x MXene nanocomposite containing 0D/2D interfaces was prepared by situ growth strategy of one-step hydrothermal method . A SnO 2 /Nb 2 CT x MXene based acetylcholinesterase (AChE) biosensor was constructed for pesticide detection. Highly conductive Nb 2 CT x MXene, acting as substrate material, restrained the agglomeration of nanoparticles (NPs) and accelerated electron migration due to the confinement effect and well-known accordion-like layered structure. In addition, SnO 2 anchored on both sides of the Nb 2 CT x MXene nanosheets effectively provided a large surface area, abundant surface groups and active sites, which preserved numbers of electrons at the interface of the heterojunction . The SnO 2 /Nb 2 CT x MXene hybrids with outstanding conductivity, good biocompatibility and structural stability were beneficial for AChE immobilization. Under the optimized conditions, as-fabricated electrochemical biosensor demonstrated superior performance with linear detection range of 5.1 × 10 −14 - 5.1 × 10 −7 M for chlorpyrifos , along with the limit of detection (LOD) down to 5.1 × 10 −14 M (calculated for 10% inhibition). Furthermore, it is highly expected that this biosensor can be applied for the detection of other organophosphorus pesticides in the environment, providing an effective nanoplatform in biosensing field.
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高影响因子
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