ACS Applied Energy Materials
·
2025
·
IF 5.5
Ye Gao,Aihua Yan,Huaqi Yuan,Fei Huang,Zigao Su,Wenxue Zhao,Jixu Zhang,Bolei Hui,Heng Wang
Artificial regulation of the charge transfer pathway is an effective strategy for optimizing the charge dynamics and enhancing the photocatalytic hydrogen production. Herein, MoS2/Sv-ZnIn2S4/Ni(OH)2 composites were synthesized by an in situ structure-tailored technique. Systematic investigations confirmed the existence of sulfur vacancy (Sv), Ohmic-type MoS2/Sv-ZnIn2S4 junction, and p-n-type Sv-ZnIn2S4/Ni(OH)2 heterojunction in MoS2/Sv-ZnIn2S4/Ni(OH)2 composites. Specifically, n-type MoS2 and p-type Ni(OH)2 acted as the electron transport layer and hole transport layer, which not only achieved the carrier spatial separation and directional charge transfer but also suppressed the carrier recombination and enhanced the hydrogen reduction reaction dynamics. As a result, the optimized composites displayed an outstanding photocatalytic H2-releasing rate of 12.34 mmol·g–1·h–1, which was 5.96 times higher than that of pristine ZnIn2S4. This work provides an unusual opinion for developing the multichannel-modification photocatalysts with a controllable charge transfer route.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaohua Yang,Man Zhou,Yihang Tang,Jing Li,Lifu Zhou,Wentao Xu,Yao Xiao,Jin Zhao,Yuzhe Zhang,Zhongyu Li
Addressing global freshwater scarcity, solar-driven interfacial evaporation (SDIE) technology has garnered significant attention due to its sustainability and economic advantages. However, challenges including salt accumulation, substantial heat loss, and biofouling still persist when treating the water in nature. Herein, we developed a BM/BPMC Janus aerogel evaporator composed of a hydrophilic top layer and a hydrophobic bottom layer. This aerogel with a self-floating capability, reduced water evaporation enthalpy, enhanced anti-biofouling properties, salt resistance, and efficient thermal localization. Its hydrophilic top layer, fabricated by embedding MoS 2 @MWCNTs-OH within a bacterial cellulose (BC)/polyethyleneimine (PEI) matrix, exhibits synergistic photothermal-antibacterial functionality. The hydrophobic insulating bottom layer, constructed from silanized BC, achieves an ultralow thermal conductivity of 0.036 W·m −1 ·K −1 , enabling highly efficient thermal localization. Vertically aligned microchannels ensure rapid water supply and salt reflux. Synergistically, the positively charged surface of the hydrophilic layer also induces a Donnan effect, significantly enhancing system salt resistance. Furthermore, this cationic evaporator concurrently achieves highly selective adsorption of anionic dyes (>97.8 % removal for MO/CR). Hydroxyl/amino functional groups enriched within the hydrophilic layer markedly reduce evaporation enthalpy by lowering the activation energy of water molecules. Under 1 kW m −2 solar irradiation, the evaporator achieves a water evaporation rate of 2.78 kg·m −2 ·h −1 and an energy conversion efficiency of 113.2 %. This study presents a novel strategy for efficient desalination and synergistic contaminant removal in complex aqueous environments.
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ACS Nano
·
2025
·
IF 16
Qu Jiang,Sihong Wang,Ziyang Sheng,Chaoran Zhang,Haoyue Zhang,Haofei Wu,Pan Liu,Peng Fan,Fang Song
Traditional electrochemical redox assessments offer insights into material properties for charge storage and catalytic kinetics but often fail to link these to specific surfaces, obscuring the structure–performance relationship. Here, we reveal the facet-dependent electrochemical redox behaviors and their connection to oxygen evolution reaction (OER) catalysis using Co(OH)2 nanosheets and nanorods as models. By correlating redox charge storage capacity and kinetics with distinct exposed surfaces, we uncover diffusion-controlled redox processes on the basal surface and non-diffusion-controlled behavior on the lateral surface and further utilize the distinct redox charging kinetics to differentiate the two. Integrated microscopic, spectroscopic, and electrochemical analyses reveal redox-active regions with a thickness of ∼12 Co atoms on the lateral surface and 85% Co atom equivalent extension on the basal surface, yielding benchmark redox charge capabilities of 3.04 mC cm–2 for the lateral surface and 0.35 mC cm–2 for the basal surface. By linking the surface-specific redox charges to catalytic performances, we find that the catalytic activity correlates with the lateral surface exclusively, corresponding well with previous demonstration of the catalytic reactivity of the lateral surface and the inertness of the basal surface. This work clarifies dynamic, heterogeneous, and anisotropic redox behaviors and offers a fast, reliable, and simplified method to probe the facet-specific redox and catalytically active surfaces electrochemically.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Zhengtao Xu,Chen Wang,Zhuangzhuang Zhao,Yuxin Zhang,Yao Ying,Juan Li,Liang Qiao,Jingwu Zheng,Shenglei Che,Jing Yu
Theranostic probes that integrate diagnosis and treatment together are considered as effective tools for individual therapy. However, the separation of detection and treatment components limits precise assessment of therapeutic efficacy. Herein, a novel self-monitoring probe that sensitively responds to adenosine triphosphate (ATP) was developed by ultrafine iron oxide nanowires (UIONWs) through an oleyl amine-assisted way. The UIONWs, with a diameter of 1.5 nm and length of 75 nm, are surface-coordinated with oleyl amine. UIONWs can be decomposed in ATP-containing solution and expose the shielded iron ions. Consequently, it can boost the peroxidase (POD) activity and activate the T 1 -magnetic resonance imaging (MRI) signal by ATP. In addition, UIONWs can be rapidly engulfed into cells due to the high aspect ratio. The improved ATP and hydrogen peroxide (H 2 O 2 ) within tumor cells leads to higher hydroxyl radicals (OH) generation for effective tumor inhibition.In contrast, normal cells exhibit lower ATP and H 2 O 2 levels, reducing cytotoxicity and ensuring safety. Since both the illumination of T 1 -MRI and OH generation are ATP-controlled, this work raised a potential way to self-monitor tumor therapy with timely feedback on therapeutic effects.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Xinyu Duan,Huiping Jia,Tingting Cao,Hongbin Yu,Yanan Zhang,Ying Lu,Dandan Zhou
Nitrate, widely present in water, can be excited by UV light and generate reactive nitrogen species (RNS) etc., facilitating pollutants selective degradation. In this work, the promoting effect of nitrate on atrazine removal in the Z-scheme Cs 3 Bi 2 I 9 /BiVO 4 (CBI/BVO) photocatalytic system was studied. The CBI/BVO composite utilized CBI and BVO excitation to enhance photogenerated carriers production, and the Z-scheme heterojunction to increase photoinduced carriers separation yield, with a maximum value of 15.41 times that of pure BVO, releasing CBI electrons and BVO holes with powerful redox ability. Thanks to nitrate addition, the atrazine degradation improved, whose kinetic constant was 14.46 and 2.37 times higher than that of nitrate photolysis and 0.32-CBI/BVO photocatalysis . DFT , HPLC-MS, EPR , and toxicity assessments indicated the electron rich portion of atrazine and its intermediates were susceptible to RNS attack and underwent dechlorination , that combined with the oxidation brought by ·OH, synergistically promoting atrazine degradation, mineralization, and detoxification.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yang Sun,Fan Yang,Siyuan Sun,Kexin Wei,Ye Wang,Guang Ma,Junpu An,Junwei Yuan,Meitong Zhao,Jiahui Liu,Hongchen Liu,Yongfeng Li
Developing high-performance and low-cost electrodes for hydrogen and oxygen evolution reactions (HER and OER, respectively) represents a pivotal challenge in the field of water electrolysis. Herein, W doped NiFe LDH nanosheets (NiFe-W x /NF) were immobilized on nickel foam (NF) through one-step corrosion engineering, which induced the coexistence of α-Ni(OH) 2 and β-Ni(OH) 2 . The doping of large atomic radius W influenced the growth of crystal planes of Ni(OH) 2 , promoting the formation of α-Ni(OH) 2 , which results in large layer spaces and neatly arranged nanosheets structure. The optimized NiFe-W 0.5 /NF catalyst require potentials of only 69 to attain 10 mA/cm 2 for HER, and require overpotentials of 269 mV to reach 100 mA/cm 2 current density for OER, respectively. The W 6+ with high oxidation state can withdraw neighboring electrons from Ni, altering the adsorption energy of hydrogen intermediates, which improves the Volmer step and electrical conductivity in HER. And the large layer space of α-Ni(OH) 2 in NiFe-W 0.5 /NF can be contributed to accelerating the formation of high valence γ-NiOOH, which can accelerate OER kinetics. In addition, the NiFe-W 0.5 /NF catalyst also provides an overall water splitting activity of 780 mA/cm 2 current density at a cell voltage of only 1.90 V, and remains highly stable for over 70 h at 100 mA/cm 2 , which makes it a bifunctional efficient catalyst for water electrolysis.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Nian-Dan Zhao,Yan Wang,Xiao-Hang Zou,Wei-Ming Yin,Xin-Yu Wang,Yuan-Ru Guo,Qing-Jiang Pan
The utilization of renewable biomass cellulose in treating pollution of heavy metal ions (HMIs) is one of overarching and appealing strategies, because it simultaneously satisfies sustainable development and resolves ever-increasing environmental issue. In this regard, the composite cellulose@Mg(OH) 2 was prepared via a facile method and explored for its use as water treatment agent. It is demonstrated that the smaller and thinner hexagonal Mg(OH) 2 flakes are constructed onto the cellulose substrate by self-assembling; two components are chemically coupled via hydrogen bonds and Mg-O c (cellulose oxygen) dative bonds; what’s more, the coupling of cellulose with Mg(OH) 2 (1 0 1) facet is much more preferential than with (0 0 1) facet. The resultant composite material shows remarkable HMI removal performance: large capacities of 734.9, 595.8 and 1473.1 mg g −1 for Cd 2+ , Cu 2+ and Pb 2+ , respectively. Further assisted by good shaping property of the cellulose substrate, the composite is capable of being made into filter, which practically separates HMIs and purifies wastewater with high removal efficiency (99.99%) for Cd 2+ even after operating for 110 days and potable water can be obtained. The mechanism is delineated with removal models and characterizations of HMI-recovered products.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Haitao Xu,Dianhua Song,Jiao Li,Yan Zhao,Ruijie Yang,Jingzhe Zhao
The demand for sustainable energy sources urges the development of efficient and earth-abundant electrocatalysts . Herein, chlorine assisted ion-exchange and in-situ sulfurization processes were combined to construct CuCo 2 S 4 @(Cu,Co) 2 Cl(OH) 3 heterostructures from Cu(OH) 2 nanoarrays. Chlorine element in the cobalt source stimulated the formation of (Cu,Co) 2 Cl(OH) 3 precursor, and further facilitated partial transformation of the precursor to CuCo 2 S 4 on the surface to achieve composite structure. The mixed valences of Co element (Co 3+ in CuCo 2 S 4 and Co 2+ in (Cu,Co) 2 Cl(OH) 3 ) and O S interpenetrated nanointerface in the composite catalysts provided low electron transfer resistance for good alkaline oxygen evolution reaction (OER) activities. In 1 mol L −1 KOH electrolyte, the overpotentials of the optimal composite catalyst reached 253 and 290 mV respectively at the current density of 20 and 50 mA cm −2 , which is comparable to the activity of commercial Ir/C (281 mV@20 mA cm −2 ). These findings could provide opportunities for designing effective and inexpensive composite electrocatalysts through nanointerface engineering strategy.
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高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 16
·6263-6270
·
IF 8.067
Yunpeng Xu,Yue Liu,Jianyong Ye,Lizhong Wang,Sheng Zhuo,Weifan Chen
Low-cost and highly electroactive nickel-based materials are important electrodes for the development of supercapacitors. The precise modulation of the morphology and microstructure has been a crucial measure to further enhance the electrochemical performance. Herein, a three-dimensional porous nanocage NixS6/Ni(OH)2 hybrid formed by NixS6 nanoparticles anchored on Ni(OH)2 nanoflakes was creatively synthesized via a simple and scalable approach, which was based on two-time ion exchange reactions of the Mg(OH)2 precursor. Significantly, in asymmetric supercapacitors, the NixS6/Ni(OH)2 hybrid exhibits a high specific capacitance of 2726 F g−1 at a current density of 1 A g−1 and an excellent energy density of 31.31 Wh kg−1 at a power density of 62.56 W kg−1, which are superior to those of the currently reported nickel sulfide electrode materials. Compared with the nanoflower-like Mg(OH)2 and Ni(OH)2 precursors, the NixS6/Ni(OH)2 hybrid possesses hollow, abundant porous morphology and better electrical conductivity, which could provide a large contact surface area, shorter ion diffusion path and excellent charge transport, resulting in a dramatic improvement in electrochemical performance, making the NixS6/Ni(OH)2 hybrid a superb cathode material for supercapacitors.
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ORGANIC ELECTRONICS
·
2018
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IF 3.68
Kang Chen,Tiantian Cao,Ziqi Sun,Dan Wang,Ning Chen,Yongfang Li
TiO 2 is widely used in conventional n-i-p type perovskite solar cells (Pero-SCs) as electron transporting layer (ETL). However, its drawbacks such as photocatalytic properties, low electron mobility , and a process of high temperature sintering , hindered the further improvement of device performance. In this work, a vacuum-deposited fullerene C 60 was utilized as ETL, and a easily accessible fullerene derivative, C 60 (OH) 16 fullerenol, was employed between ITO electrode and C 60 ETL to modify ITO for the first time. After introducing the C 60 (OH) 16 fullerenol layer, the Pero-SC obtained the favorable energy level alignment between ITO cathode and perovskite layer, and the device based on C 60 (OH) 16 /C 60 ETL achieved a champion PCE of 16.70%, which showed a 15.41% enhancement compared to the Pero-SC with pristine C 60 ETL (14.47%). The mechanisms of performance improvement were systemically discussed with respect to the optimized energy level, efficient charge transport and reduced interfacial resistance. This work exhibited that fullerenol C 60 (OH) 16 is a promising interfacial modification material for the n-i-p type Pero-SCs.
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Nanomaterials
·
2021
·Vol. 11
·期 11
·3122
·
IF 5.076
Rao Fu,Yinyan Gong,Can Li,Lengyuan Niu,Xinjuan Liu
The development of highly active and stable photocatalysts, an effective way to remediate environment pollution and alleviate energy shortages, remains a challenging issue. In this work, a CdIn2S4/In(OH)3nanocomposite was deposited in-situ on NiCr-LDH nanosheets by a simple hydrothermal method, and the obtained CdIn2S4/In(OH)3/NiCr-LDH heterostructure photocatalysts with multiple intimate-contact interfaces exhibited better photocatalytic activity. The photocatalytic H2evolution rate of CdIn2S4/In(OH)3/NiCr-LDH increased to 10.9 and 58.7 times that of the counterparts CdIn2S4and NiCr-LDH, respectively. Moreover, the photocatalytic removal efficiency of Cr(VI) increased from 6% for NiCr-LDH and 75% for CdIn2S4to 97% for CdIn2S4/In(OH)3/NiCr-LDH. The enhanced photocatalytic performance was attributed to the formation of multi-interfaces with strong interfacial interactions and staggered band alignments, which offered multiple pathways for carrier migration, thus promoting the separation efficiency of photo-excited electrons and holes. This study demonstrates a facile method to fabricate inexpensive and efficient heterostructure photocatalysts for solving environmental problems.
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INORGANIC CHEMISTRY
·
2019
·
IF 4.85
Ya-Ping Gong,Yun-Xiang Ma,Shao-Ming Ying,Jiang-Gao Mao,Fang Kong
Two new indium sulfate tellurites, namely, In2(SO4)(TeO3)(OH)2(H2O) and In3(SO4)(TeO3)2F3(H2O), were synthesized by hydrothermal method in a one-pot reaction. Their pure phase yields have been successfully optimized to 76% and 21%, respectively. In2(SO4)(TeO3)(OH)2(H2O) crystallized in centrosymmetric (CS) space group P21/n, while In3(SO4)(TeO3)2F3(H2O) formed a non-centrosymmetric (NCS) and chiral space group P212121. The CS compound features a 2D layered structure composed of 2D indium oxide layers decorated by sulfate tetrahedra and tellurite groups. The NCS compound displays a 3D network consisting of indium tellurite layers bridged by sulfate tetrahedra. Powder second harmonic generation measurements disclosed that In3(SO4)(TeO3)2F3(H2O) exhibits a weak frequency-doubling efficiency about 11% of the commercial KDP. Its powder laser damage threshold quantity was estimated to be 79.6 MW/cm2, which is about 36 times that of AGS. The two samples present wide optical band gaps of 4.86 and 4.10 eV, respectively, which were determined by Te, In, and O atoms based on density functional theory calculations.
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