JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Shudong Liang,Dai Jin,Yongjun Fu,Qingzhuo Lin,Rongbin Zhang,Xuewen Wang
Solar-driven hydrogen evolution over ZnO-ZnS heterostructures is considered as a promising strategy for sustainable-energy issues. However, the industrialization of this strategy is still constrained by suppressed carrier migration, rapid charge recombination, and the inevitable utilization of noble-metal particles. Herein, we envision a novel strategy of successfully introducing In 2 O 3 into the ZnO-ZnS heterostructure. Benefiting from the optimized internal electric field and the charge carrier migration mode based on the direct Z-scheme, the interfacial elaborating In 2 O 3 -decorated ZnO/reduced graphene oxide (rGO)/ZnS heterostructure manifests smooth charge migration, suppressed electron–hole pair recombination, and increased surface active sites. More importantly, the in situ introduction of In 2 O 3 optimizes the construction of the internal electric field, favoring directional light-triggered carrier migration. As a result, the light-induced electrons generated from the heterostructure can be efficiently employed for the hydrogen evolution reaction. Hence, this work would shed light on the in situ fabrication of noble-metal-free photocatalysts for solar-driven water splitting.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2014
·
IF 6.007
Linhui Yu,Wei Chen,Danzhen Li,Jubao Wang,Yu Shao,Miao He,Peng Wang,Xiuzhen Zheng
Hollow ZnO core/ZnS shell structure (ZnO/ZnS HCSS) has been successfully synthesized via a microwave-assisted hydrothermal approach. It is found that such a ZnO/ZnS HCSS exhibits higher photocatalytic activity than pure ZnO and ZnS toward the liquid-phase degradation of methyl orange (MO) under UV irradiation. What is more noteworthy, it is also demonstrated that ZnO/ZnS HCSS photocatalyst overcomes the photocorrosion in comparison to pristine ZnO by mean of cycling tests toward MO. The detailed degradation process of MO over ZnO/ZnS HCSS is investigated by liquid chromatography–mass spectrometry method. And then, the roles of active species in the photocatalytic process are discussed by using different types of active species scavengers. Meanwhile, combined with the electron spin resonance and photocurrent test, the degradation mechanism of the photocatalysts is proposed. It is hoped that the work could provide valuable information on the design of specific structure materials with more excellent properties and set the foundation for the further industrial application.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Fengping Peng,Xuan Kai,Wei Wang,Chunzheng Wu
Converting N 2 into ammonia under ambient conditions using mechanical energy-driven piezocatalysis represents a promising approach for sustainable nitrogen fixation, although its efficiency is often limited by insufficient nitrogen activation and rapid recombination of piezo-induced charge carriers. Herein, bi-piezoelectric ZnO-ZnS heterostructures were successfully constructed through a post-synthetic anion exchange strategy using electrospun ZnO as the precursor. The gradual O 2– to S 2- exchange process generated a core–shell structure composed of a ZnO core and a porous ZnS shell while preserving favorable interfacial coupling between the two piezoelectric phases. The optimized heterostructure achieved significantly enhanced ammonia production, delivering yields 2.1 and 8.9 times higher than those of ZnO and ZnS, respectively, and 2.5 times higher than a physical mixture of ZnO and ZnS with similar composition. This enhancement was also observed in dye degradation, demonstrating the general applicability of the heterostructure design. Mechanistic studies revealed that the improved performance originates from enhanced piezoelectric polarization, more efficient spatial charge separation, and abundant surface active sites that promote N 2 adsorption and activation. This work provides an effective strategy for constructing strongly coupled bi-piezoelectric heterostructures and highlights the importance of interface engineering for efficient piezocatalytic nitrogen fixation.
✓ 已验证
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DOI
高影响因子
ANALYST
·
2011
·Vol. 137
·期 1
·195-201
·
IF 3.913
Jianbo Xiao,Yaru Zhao,Fangfang Mao,Jie Liu,Muxia Wu,Xibin Yu
The effect of a ZnO#ZnS QDs heterojunction (O#SQDs) on the binding affinities of flavonoid glycosides for bovine serum albumin (BSA) was investigated. The fluorescence intensities of BSA decreased remarkably with increasing concentration of O#SQDs. The magnitudes of the binding constants of flavonoid glycosides for BSA in the presence of O#SQDs were in the range of 105–107 L mol−1, and the number of binding sites per BSA (n) was determined as 1.24 ± 0.17. O#SQDs increased the affinities of flavonoid glycosides for BSA by about 2.96% to 114.68% depending on their structures. O#SQDs in blood will enhance the transportation of flavonoid glycosidegs in blood and improve their pharmacology effects. From this point, O#SQDs are a perfect candidate for flavonoid glycosides delivery applications.
研究领域:
生物化学
·
药理学
·
纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Huihui Dong,Guorui Ma,Jingtian Ni,Shuting Xi,Jing Li,Feng Li
The practical deployment of Zinc oxide (ZnO) photoanodes for photoelectrochemical (PEC) water splitting is severely impeded by rapid photogenerated carrier recombination and sluggish oxygen evolution reaction (OER) kinetics. Herein, we elucidate a synergistic structural engineering strategy integrating interstitial boron (B) doping, Type-II heterojunction construction, and coherent grain boundary regulation to tailor high-performance B-ZnO@ZnS nanorod arrays. Comprehensive characterizations corroborate that B-doping introduces abundant oxygen vacancies to modulate the electronic band structure, while the coherent B-ZnO/ZnS interface establishes a robust built-in electric field, thereby facilitating bulk charge separation and accelerating interfacial hole transfer. Consequently, the optimized photoanode exhibits a remarkable photocurrent density of 1.054 mA cm −2 at 1.23 V vs. RHE (representing a 1.67-fold enhancement over pristine ZnO) and a substantial cathodic shift in onset potential to 0.24 V. Notably, in situ ATR-IR spectroscopy captures the dynamic evolution of key *OOH intermediates, corroborating an adsorption evolution mechanism (AEM) where the multidimensional engineering significantly ameliorates the energy barrier for intermediate formation. This work offers a pivotal paradigm for designing durable and high-efficiency photoelectrodes via precise defect and interface manipulation.
✓ 已验证
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Jie Liu,Linye Ji,Junyi Yu,Shanjun Ding,Suibin Luo,Baojin Chu,Jianbin Xu,Rong Sun,Shuhui Yu
We demonstrate that introduction of heterostructure nanoparticles into a polymer matrix is an effective strategy to substantially enhance dielectric breakdown strength (E b ) and thus a high electrostatic energy storage density (U e ) can be obtained, which is highly desired in modern electronic and electrical systems for energy storage and conversion. This is realized through the special “electrical rectification” effect of heterostructure nanoparticles on the charge transport, which stems from capturing and confining charge carriers in the nanocomposites by potential well and potential barrier formed at the heterojunction of ZnO-ZnS nanoparticles. The leakage current of the ZnO-ZnS/polyetherimide nanocomposites (ZnO-ZnS/PEI) is suppressed by the introduced heterojunction, which is accompanied with the simultaneous increase of dielectric displacement and charge–discharge efficiency, resulting in significant enhancement of U e . Notably, the 1 wt% ZnO-ZnS/PEI nanocomposite films possess high discharged energy density at room temperature, i.e. 6.9 J cm −3 at 650 MV m −1 , and even at 150 °C, the U e still remains 3.6 J cm −3 at 500 MV m −1 . Outstanding fatigue resistance over 50,000 charge–discharge cycles at 200 MV m −1 and 150 °C demonstrates high temperature cyclic stability of the heterostructure in confining charge carriers. This work provides a novel and scalable strategy to obtain polymer-based dielectrics with superior energy storage performance.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Li Xiaoguang,Chen Jia,Li Aoqi,Li Jing,Wang Mingyu,Li Liangsheng,Shangguan Enbo
A novel in situ self-sulfidation approach was devised to fabricate ZnO/ZnS/C ternary nanocomposites as highly stable anodes for alkaline Zn–Ni batteries. Zinc sulfate acted as a dual-purpose precursor, providing both zinc and sulfur, whereas acrylamide served as the carbon source and in situ reductant. In a single-step carbothermal pyrolysis at 800 °C, the carbon matrix converted sulfate ions to sulfide, facilitating the simultaneous generation of electrochemically active ZnO, a protective ZnS layer, and a conductive carbon network during a single thermal treatment. The optimized ZnO/ZnS/C-2 electrode exhibited a discharge capacity of 576.8 mAh g −1 after 600 cycles at 1 C and maintained 513.2 mAh g −1 at 15 C. Under identical conditions at 10C, the ZnO/ZnS/C-2 electrode delivered a capacity of 545.3 mAh g −1 , which is 41.5% higher than that of commercial ZnO (385.4 mAh g −1 ). Upon the current density reverting to 0.2 C, it regained 96.6% of its original capacity, indicating remarkable reversibility. Post-cycling scanning electron microscopy images validated the successful inhibition of zinc dendrite proliferation. The performance improvements arise from the synergistic combination of the protective ZnS layer, the interconnected conductive carbon framework, and the advantageous ZnO/ZnS heterointerface, which collectively boost structural stability and charge transfer kinetics.
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123793
·
IF 7.5
Hao Cai,Tianyuan Guan,Shuo Yang,Changyu Lu,Zhijia Miao,Aifang Gao,Zichuan Ma
Metronidazole (MNZ) poses a significant environmental challenge due to its high bio-resistance and environmental persistence, resulting in refractory residues that are difficult to eliminate via traditional biochemical methods. Although ZnO-ZnS heterojunctions can facilitate charge separation, the traditional Type-II migration pathway inevitably directs photogenerated carriers toward energy bands with weaker redox potentials. This results in a redox potential compromise that severely limits the intrinsic reaction kinetics of the system, particularly in neutral environments. To address this critical issue, we developed a novel ZnO-ZnS@Biochar (HZSBC) heterojunction using straw biochar as an economical carbon host. The contribution of this work lies in discovering that interface-anchored persistent free radicals (PFRs) function as non-metallic solid-state electron relays. By inducing directional charge shuttling, these PFRs circumvent the aforementioned potential compromise, thereby establishing a Z-scheme charge transfer pathway that preserves exceptional redox capabilities. Via a dual-site anchoring-in situ transformation strategy, high-density oxygen-centered PFRs (spin concentration reaching 20.05 ×10 17 spins/g) were precisely engineered at the HZSBC interface, providing stable electron relay channels for the Z-scheme mechanism. Consequently, HZSBC achieved 90.2% MNZ removal within 110 min under neutral conditions (pH 7.0) with only 8 mM H 2 O 2 , exhibiting an apparent rate constant of 1.01 × 10 −2 min −1 and maintaining over 80% removal efficiency after five consecutive cycles. By overcoming the thermodynamic limitations of photocatalysis via PFRs-mediated interfacial band engineering, this work not only offers a new paradigm for the design of high-performance Z-scheme catalysts but also provides an ideal technical pathway for the deep coupling of advanced oxidation processes with downstream biological treatment units.
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 32
·9856-9864
·
IF 6.641
Di Yin,Ming-Liang Wang,Ying-Zi Wang,Xun Hu,Bo Liu,Hong Liu,Lulu Ma,Guang-Gang Gao
A ternary nanocomposite containing ZnO, ZnS and MoS2 (ZnMoNCs) has been firstly synthesized by Keggin-type polyoxomolybdate and ZIF-8 as starting materials to provide Mo and Zn sources simultaneously. As compared to the mono- or bi-component complex, ZnMoNCs present more sensitive and stable surface-enhanced Raman scattering (SERS) activity. When rhodamine 6G is used as a probing molecule, the detection limit of 10−9 mol L−1 can be achieved on the ZnMoNC substrate with the enhancement factor (EF) of 1.4 × 108, which is the highest sensitivity among the known semiconductor SERS substrates. The increased adsorption sites and the synergistically improved charge transfer are conducive to the large enhancement of the SERS activity. It was also proved that the ZnMoNC substrate possesses high stability and self-cleaning properties, and can be reused in SERS detection without losing its activity even after 5 cycles. This work paves a new way to the design of new semiconductor SERS substrates by the utility of a multicomponent complex.
研究领域:
材料科学
·
光谱学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）