APPLIED SURFACE SCIENCE
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2026
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IF 6.6
Qian Li,Tong Yu,Tangze Deng,Jie Zhang,Jinwei Chen,Gang Wang,Zongbo Shi,Runsheng Zhuo,Ruilin Wang
Surface hydroxyl modulation on S-1 enables the rational design of PtCu catalyst. • Surface OH modulates particle surface density and promotes PtCu interaction. • The optimal 0.5Pt2Cu/S-1–950 demonstrated an approving PDH activity. Propane dehydrogenation (PDH) is a promising approach for propylene production. However, Pt-based catalysts suffer from severe coke deposition and metal sintering at high temperature, thus leading to a rapid deactivation and low propylene yield. Herein, a surface hydroxyl (OH) strategy is developed to modulate the dispersion and configuration of PtCu active sites on silicalite-1 (S-1). The precise regulation of OH density effectively optimizes the particle density of PtCu species. The properly introduced surface OH provides suitable sites to anchor the PtCu active sites with an enhanced catalytic activity and stability. The optimal 0.5Pt2Cu/S-1–950 catalyst achieves an initial propane conversion of 63.4%, propylene space–time yield of 0.60 g g cat. -1 h −1 , and exceptional long-term stability. Moreover, the catalyst also exhibits low coke formation rate with a total coke content of only 1.5 wt% after 6 h of reaction, thereby avoiding the coverage of active sites. The surface Si-OH-modulation offers an effective strategy for constructing high-efficiency Pt-based catalysts with an improved durability for propane dehydrogenation. Download: Download high-res image (111KB) Download: Download full-size image
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Small
·
2026
·
IF 11.8
Zhiang Hou,Rui Hu,Yitong Chen,Jinnan Wang,Aimin Li
The spin state of oxygen intermediates constitutes a fundamental limitation to the four-electron oxygen evolution reaction (OER), impeding efficient photoelectrochemical water splitting. Herein, guided by the chiral-induced spin selectivity (CISS) effect, we design a chiral L-Co (3−x) Ni x O 4 /BiVO 4 photoanode that employs a chiral co-catalyst layer to accelerate the evolution of oxidative intermediates. Kinetic isotope experiments, in situ attenuated total reflection Fourier Transform infrared spectroscopy and density functional theory calculations demonstrate that aligning the spin states of charge carriers via chiral molecules facilitates the rapid conversion of * OH to * OOH. Meanwhile, this process effectively suppresses the formation of hydrogen peroxide (Faradaic efficiency < 10%) and improves photoanode stability. Consequently, the L-Co (3−x) Ni x O 4 /BiVO 4 photoanode achieves a photocurrent density of 5.41 mA·cm −2 at a potential of 1.23 V vs. the reversible hydrogen electrode, and maintains stable operation for over 100 h at the working voltage. This work unravels the underlying mechanism by which the CISS effect governs the OER pathway and mediates the formation of key reaction intermediates and provides a viable spin-engineering route to efficient and stable photoanodes.
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Nature Communications
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2026
·
IF 18.1
Li Yang,Wang Shuijing,Yuan Mingyue,Du Yu,Cai Yingying,Miao Tangying,Kou Jiahui,Yan Shicheng,Lu Chunhua
The realization of multi-energy water oxidation systems is impeded by the challenge of integrating multiple energy inputs. Here, we overcome this limitation via ultrasonic pre-treatment of the electrolyte, which triggers a mechano-electrochemical coupling effect through piezoelectric polarization. This process promotes a Grotthuss-type OH − state that weakens O-H bonds and increases the interfacial OH − concentration, thereby influencing the electrochemical reconstruction of Ni(OH) 2 to NiOOH and modifying water electrolysis pathways. These changes enhance Ni-O covalency and synergistically activate two low-energy water oxidation pathways on NiOOH involving lattice oxygen: one couples lattice oxygen with adsorbed oxygen, while the other facilitates direct lattice oxygen-oxygen coupling. Both routes bypass the high-energy * OOH intermediate typical of the conventional adsorbate evolution mechanism ( * OH → * O → * OOH → O 2 ), with the latter also avoiding * O adsorption entirely. Notably, just one minute of ultrasonic stimulation reduces the overpotential by 222 mV at 100 mA cm -2 . This pulsed-energy strategy thus offers an efficient and scalable approach to realizing multi-energy-enhanced water splitting.
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CHEMISTRY OF MATERIALS
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2026
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IF 7.1
Luyong Zhang,Jianyi Zuo,Guangsheng Xu,Jinbin Fan,Xue Bai,Zhihua Yang,Fangfang Zhang,Shilie Pan
Deep-ultraviolet (DUV) birefringent crystals are essential for modern optical technologies, yet achieving a balance between large birefringence and a wide bandgap remains challenging. Although conventional borosulfates with alternating [BO4] and [SO4] tetrahedra connected by sharing corners possess a wide bandgap, they suffer from small birefringence due to weak optical anisotropy resulting from the presence of only tetrahedral groups. This work introduced advantageous “genes” [BO2(OH)] groups to modify the common [B(SO4)4] supertetrahedra for the first time and ultimately produced two borosulfates, Na3B3S2O11(OH)2 and K3B3S2O11(OH)2, striking the balance. Isolated fundamental building block (FBB) [B3O3(OH)2(SO4)2] was observed in the two compounds. Additionally, three conventional borosulfates featuring isolated [B(SO4)4] supertetrahedra, Na4KB(SO4)4, Na4RbB(SO4)4, and Na3Cs2B(SO4)4, were also obtained for comparison. Structural analysis and theoretical calculations reveal that the directional alignment of [BO2(OH)] groups significantly enhances the birefringence of the borosulfates. The calculated birefringence at 1064 nm increases by approximately 10-fold, specifically from 0.0035–0.0047 for the three conventional borosulfates to 0.043–0.044 for the two hydroxylated ones. This work demonstrates the effectiveness of employing [BO2(OH)] groups in optimizing the optical anisotropy of borosulfates, providing a design paradigm for exploring advanced DUV birefringent materials in borosulfates.
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Inorganics
·
2025
·Vol. 13
·期 7
·211
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IF 3
Wen Li,Di Yin,Wanxin Liu,Yi Li,Yijin Wu
The electrochemical oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) coupled with water electrolysis for green hydrogen production is a promising strategy to address energy crises and environmental pollution. Despite the suitable adsorption energy for HMF due to their partially filled d-band electronic structures, Ni- or Co-based oxides/hydroxides still face challenges in insufficient activity and stability. In this study, a porous heterogeneous nickel cobalt oxide/hydroxide growth on nickel foam (NF), which is defined as NF@NiCo-H/O, was developed via immersion in concentrated alkali solution. Compared with the single-component NiCo oxides, the NF@NiCo-H/O catalyst exhibits a lower application potential of only 1.317 V, 1.395 V, and 1.443 V to achieve current densities of 20, 50, and 100 mA cm−2, respectively, in an alkaline solution containing HMF. Additionally, it demonstrates rapid reaction kinetics with a Tafel slope of 27.6 mV dec−1and excellent cycling stability. Importantly, the presence of more high-valent Ni3+-O species on the catalyst surface contributes to its exceptional selectivity for 2,5-furandicarboxylic acid (86.7%), Faradaic efficiency (93.1%), and conversion rate (94.4%). This catalyst provides some theoretical guidance for the development of biomass electrooxidation catalysts for sustainable energy and chemical production.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Zhang Tianyu,Wang Weibo,Liu Wenxian,Guo Zhengxiao,Liu Junfeng
Reconstruction of metal-organic frameworks often occurs under reaction conditions, thereby impeding true active species identification and hindering mechanism understanding. Herein, we present the mechanistic insight underlying the electrochemical synthesis of deprotonated anion of H 2 O 2 (HO 2 − ) via 2e − oxygen reduction by ultrathin Ni-benzenedicarboxylic acid (NiBDC), guided by its thickness-dependent performance and pH-induced reconstruction behavior. The real active species are identified as alkaline-reconstructed β-Ni(OH) 2 that is chemically coupled with 1,4-benzenedicarboxylic acid residual ligand. The hybrid catalyst is characterized to exhibit an optimized surface electronic structure, which improves the intrinsic activity and selectivity. Operando characterization and theoretical simulations further reveal that the residual ligand functionalization significantly boosts the formation and facilitates the adequate binding of *OOH intermediates. Thus, the ligand-functionalized Ni(OH) 2 exhibits high HO 2 − selectivity (>90%) in 0.1 M KOH across a broad current density up to 200 mA cm −2 . Moreover, high HO 2 − production rate of 13.7 mol g cat −1 h −1 with significant accumulation of 2.0 wt.% HO 2 − under alkaline conditions is achieved at 200 mA cm −2 over 100 h, suggesting the promising potential for large-scale electrosynthesis of HO 2 − in industrial applications.
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Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·288
·
IF 38.5
Hu Shangshu,Yang Jiao,Zhuang Yujuan,Li Xueyao,Xu Han,Hu Fuwang,Yan Zhishuo,Liu Chao,Yu Jianmin,Peng Lishan
The introduced Ce(OH)CO 3 optimizes charge distribution and enhances Lewis acidity of Ni/Fe sites, facilitating OH − adsorption.
The NiFe-layered double hydroxide/Ce(OH)CO 3 enables stable alkaline seawater electrooxidation for over 450 h at a high current density of 1 A cm −2 .
In an anion exchange membrane system, an energy efficiency of 65.21% is attained at 1 A cm −2 , with hydrogen production at a cost of USD 1.03 per gasoline gallon equivalent .
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JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Ying Liu,Zhonghao Li,Lan Ran,Shukai Diao,Liwen Long,Jihong Fan,Zicheng Zuo,Tianrang Yang,Jianguo Liu
Alkaline water electrolysis (AWE) separators face a critical challenge that gas bubble accumulation at electrode-separator interfaces impedes hydroxide-ion (OH − ) transport and limits current density at industrially relevant operating conditions. Conventional sulfonation, while improving hydrophilicity, requires hazardous chemicals. Here, we report a self-assembled polydopamine/polyethyleneimine (PDA/PEI) interface that overcome these limitations through a green, room-temperature process. The co-assembled network achieves ultralow bubble adhesion force (0.005 mN), enabling rapid gas detachment that prevents blocking layer formation, while simultaneously creating amine-rich pathways for enhanced OH − migration. Applied to polyphenylene sulfide (PPS) woven fabric, the modified separator delivers a four-fold increase in current density at 2.0 V with stable operation over 2000 h, and successfully scaling to an industrial 6-cell stack. This bioinspired interfacial engineering strategy provides a sustainable and scalable alternative to conventional chemical modifications for high-performance AWE separators.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·123143
·
IF 7.5
Sobia Yaseen,Saddam Hussain,Sabeen Fatima,Nabi Ullah,Lu Zaijun
Photocatalysis has emerged as a promising strategy for antibiotic remediation in wastewater treatment owing to its environmentally benign nature, high efficiency, and cost-effectiveness. Herein, a PEDOT- NiCo(OH) 2 hybrid photocatalyst is successfully synthesized and, systematically investigated for visible-light-driven tetracycline (TC) degradation. Structural engineering via optimized incorporation of bimetallic hydroxide (NiCo(OH) 2 ) into the PEDOT markedly enhances the specific surface area (∼188 m 2 g −1 ) and pore size of 5.29 nm, while significantly narrowing the optical band gap to ∼1.79 eV, enabling efficient visible light harvesting. Electrochemical analyses demonstrate a substantially reduced charge-transfer resistance and an enhanced photocurrent response for PEDOT-Ni(OH) 2 2:1 (P-NCH21), indicating accelerated interfacial charge transport and suppressed electron–hole recombination. Consequently, P-NCH21 achieves an exceptional TC removal efficiency of 97.6% within 35 min under visible-light irradiation, far outperforming P-NH and PEDOT-Ni(OH) 2 3:1 (P-NCH31), having degradation efficiencies of 67 and 92%, respectively. Electron paramagnetic resonance (EPR) measurements confirm that the generation of reactive oxygen species, such as superoxide (•O 2 ⁻) and (•OH) are the reactive species that drives the photocatalytic degradation process. Furthermore, the hybrid photocatalyst exhibits excellent stability, retaining ∼96.8% of its initial activity after five consecutive cycles. This study highlights the potential of P-NCH21 as an efficient and robust photocatalyst for antibiotic remediation, providing new insights into the design of conductive polymer–based hybrid materials for environmental applications.
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CHINESE JOURNAL OF CATALYSIS
·
2023
·
IF 16.5
Hongfang Wang,Leitao Xu,Jingcheng Wu,Peng Zhou,Shasha Tao,Yuxuan Lu,Xianwen Wu,Shuangyin Wang,Yuqin Zou
5-Hydroxymethylfurfural (HMF) electrooxidation in neutral conditions is a promising strategy to suppress the formation of humins and corrosive effects on electrochemical devices. However, scarce studies have been reported in neutral media due to the deficiency in electrophilic oxygen (eg OH – ) required for the activation of HMF. Herein, 2,2,6,6-tetramethyl-piperidine-1-oxyl (TEMPO)/Co 3 O 4 was utilized to co-catalyze HMF in neutral media, successfully achieving 2,5-furandicarboxylic acid (FDCA) with yield > 99%. It was found that TEMPO could promote HMF dehydrogenation to 2,5-diformylfuran (DFF) and simultaneously activated water via hydrogen-bonding interactions. As a result, the formation of OH* in neutral electrolytes was favored, which was absorbed by electrogenerated active Co species to facilitate subsequent conversion of formyl-group-involved intermediates to FDCA. This work provides a current understanding of the catalytic mechanism for HMFOR in neutral media and guides the design of highly efficient electrocatalysts for biomass upgrading.
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Small
·
2023
·Vol. 19
·期 20
·2207569
·
IF 13.3
Yakun Tian,Ming Wen,Aijian Huang,Qingsheng Wu,Zhiguo Wang,Quanjing Zhu,Tao Zhou,Yongqing Fu
High stability and efficiency of electrocatalysts are crucial for hydrogen evolution reaction (HER) toward water splitting in an alkaline media. Herein, a novel nano-Pt/Nb-doped Co(OH) 2 (Pt/Nb Co(OH) 2 ) nanosheet is designed and synthesized using water-bath treatment and solvothermal reduction approaches. With nano-Pt uniformly anchored onto Nb Co(OH) 2 nanosheet, the synthesized Pt/Nb Co(OH) 2 shows outstanding electrocatalytic performances for alkaline HER, achieving a high stability for at least 33 h, a high mass activity of 0.65 mA µg −1 Pt, and a good catalytic activity with a low overpotential of 112 mV at 10 mA cm −2 . Both experimental and theoretical results prove that Nb-doping significantly optimizes the hydrogen adsorption free energy to accelerate the Heyrovsky step for HER, and boosts the adsorption of H 2 O, which further enhances the water activation. This study provides a new design methodology for the Nb-doped electrocatalysts in an alkaline HER field by facile and green way.
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International Journal of Electrochemical Science
·
2023
·
IF 1.5
Zhe Li,Chun-yong Zhang,Hao-yu Wang,Lin Zhu,Hai-tao Liu,Li Shu,Ying-pin Weng
Herein, a simple hydrothermal method was used to synthesize cobalt hydroxide/nickel sulfide and cobalt foam (Co(OH) 2 /NiS@CF) composite electrode. By simply heating cobalt foam in the aqueous solution containing cobalt nitrate, nickel nitrate, and thiourea, Co(OH) 2 /NiS nano stereoscopic website was synthesized on Cobalt foam. X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and electrochemical tests were used to characterize these composite electrodes. When the molar ratio of Co(NO 3 ) 2 ·6H 2 O to Thiourea of 4:5, Co(OH) 2 /NiS@CF exhibits excellent performance under these tests. The specific capacitance was 1260 F/g at 1.0 A/g. The composite electrode had 92.3% capacitance retention after 2000 charge-discharge cycles at 1.0 A/g.
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