Piezo-photoelectric all-in-one coaxial hierarchical TiO2-BaTiO3-CuInS2 heterostructure for synergistic water splitting

Yang, Mengchun; Wang, Y.; Ma, Huiqin; Chen, L.; Ge, Shenguang; Wang, X.; Yu, Jiaguo; Cheng, Zhenxiang

doi:10.1016/j.mtchem.2022.101076

Cited by 7 publications

(3 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As displayed in Figure F, the Cu 2p spectra exhibits two peaks centered at 949.0 and 929.1 eV, and the peak splitting between the binding energies of Cu 2p 3/2 and Cu 2p 1/2 was 19.9 eV, which matched with the chemical state of Cu + . The In 3d spectra were expressed in 444.5 and 451.9 eV with peak splitting of 7.4 eV (Figure G), corresponding to the valence state of In 3+ . , In the case of S 2p spectra (Figure H), the binding energy of S 2p simulated with 160.6 and 161.8 eV was ascribed to the composition of S 2p 1/2 and S 2p 3/2 . The calculated binding energy distinction of 1.2 eV confirmed the existence of S 2– .…”

Section: Resultsmentioning

confidence: 82%

“…30 The In 3d spectra were expressed in 444.5 and 451.9 eV with peak splitting of 7.4 eV (Figure 2G), corresponding to the valence state of In 3+ . 20,31 In the case of S 2p spectra (Figure 2H), the binding energy of S 2p simulated with 160.6 and 161.8 eV was ascribed to the composition of S 2p 1/2 and S 2p 3/2 . 32 The calculated binding energy distinction of 1.2 eV confirmed the existence of S 2− .…”

Section: ■ Results and Discussionmentioning

confidence: 95%

“…Recently, the I-III-VI ternary metal sulfides have attracted much attention. Particularly, high abundance ratios of CuInS 2 quantum dots (QDs) have been widely used in bioimaging, photocatalysis, and light-emitting diodes. , Rational cascaded sensitization could be anticipated between the labeled CuInS 2 QDs and TiO 2 NRAs-g-C 3 N 4 NSs (TiO 2 -C 3 N 4 ) heterojunctions, which expedited the migration of photoexcited electrons and suppressed charge-carrier recombination synergistically.…”

mentioning

confidence: 99%

See 2 more Smart Citations

DNAzyme-Mediated Biodeposition Coupling Adjustable Cascade Electric Fields for Photoelectrochemical Telomerase Activity Monitoring

Wang,

Li,

et al. 2023

ACS Sens.

Self Cite

View full text Add to dashboard Cite

Telomerase, as a specialized reverse transcriptase, plays a vital role in early cancer diagnostics and prognosis; thus, developing efficient sensing technologies is of vital importance. Herein, an innovative “signal-on–off” photoelectrochemical (PEC) sensing platform was developed for ultrasensitive evaluation of telomerase activity based on an electron-transfer tunneling distance regulation strategy and DNAzyme-triggerable biocatalytic precipitation. Concretely, cascade internal electric fields between CuInS2 quantum dots (QDs), graphitic carbon nitride nanosheets (g-C3N4 NSs), and TiO2 nanorod arrays (NRAs) were developed to realize cascade electron extraction and hole transfer. Enabled by such a design, an effective “signal-on” state to gain a progressively enhanced PEC output was designed by suppressing the photogenerated electron–hole pair recombination. With the introduction of hairpin probe H2 and the subsequent extension of the primer sequence driven by the target telomerase, the CuInS2 QDs labeled with hairpin probe H1 were programmatically unfolded, resulting in CuInS2 QDs’ close proximity to the working electrode away from the cascade interface, accompanied by the formation of G-quadruplex/hemin complexes. The gradual undermining of tunneling distance and implantation of DNAzyme-initiating biocatalytic precipitation tremendously induced the sluggish migration kinetics of the photoinduced charge, accompanied by the photocurrent intensity decrement, leading to the “signal-off” state. Under optimized conditions, the as-prepared PEC biosensor realizes ultrasensitive detection of telomerase activity from 10 to 105 cell·mL–1 with a detection limitation of 3 cells·mL–1. As a proof of concept, this well-designed method provides new insights into signal amplification for telomerase activity evaluation and also presents promising potential for further development in drug screening, healthcare diagnostics, and biological assays.

show abstract

Section: Resultsmentioning

confidence: 82%

Section: ■ Results and Discussionmentioning

confidence: 95%

mentioning

confidence: 99%

See 1 more Smart Citation

DNAzyme-Mediated Biodeposition Coupling Adjustable Cascade Electric Fields for Photoelectrochemical Telomerase Activity Monitoring

Wang,

Li,

et al. 2023

ACS Sens.

Self Cite

View full text Add to dashboard Cite

show abstract

Defect Engineering and Piezoelectrical Polarization Synergistically Assisted for Photoelectrochemical Sensing Based on CdS Nanowires

Wang,

Yang,

et al. 2024

Advanced Sensor Research

View full text Add to dashboard Cite

Developing progressive photoelectrochemical (PEC) techniques holds great potential for advancing analytical sensitivity in clinical. However, the low transport and separation of charge carrier efficiency and deficient active sites block efficient and durable PEC analytical performance features. And herein a piezo‐assisted PEC sensing platform for glutathione (GSH) detection are successfully prepared based on S vacancies rich CdS (Sv‐CdS) nanowires. The collaboration of piezoelectric polarization and S vacancies engineering contributed to the boosted PEC performance by accelerating the spatial separation of photogenerated charges and providing abundant active sites. Moreover, the charge transfer efficiency further promoted with the introduction of GSH acted a hole scavenge that effectively suppresses the electron‐hole recombination, giving rise to an amplified photocurrent. As a demonstration, the proposed method presents an outstanding analytical performance toward GSH. Consequently, this work provides an inspirable and convenient route for designing high‐efficiency photoelectrode in PEC sensing in virtue of judicious structural, and defect engineering, and the exploring of an external‐field‐coupling‐enhanced PEC platform.

show abstract

Advances in Hierarchical Inorganic Nanostructures for Efficient Solar Energy Harvesting Systems

Manjunatha,

Rastogi,

Manmadha Rao

et al. 2024

ChemSusChem

View full text Add to dashboard Cite

The urgent need to address the global energy and environmental crisis necessitates the development of efficient solar‐power harvesting systems. Among the promising candidates, hierarchical inorganic nanostructures stand out due to their exceptional attributes, including a high specific surface area, abundant active sites, and tunable optoelectronic properties. In this comprehensive review, we delve into the fundamental principles underlying various solar energy harvesting technologies, including dye‐sensitized solar cells (DSSCs), photocatalytic, photoelectrocatalytic (water splitting), and photothermal (water purification) systems, providing a foundational understanding of their operation. The review then shifts its focus to recent advancements in the synthesis, design, and development of hierarchical nanostructures composed of diverse inorganic material combinations, tailored for each of these solar energy harvesting systems. We meticulously elaborate on the distinct synthesis methods and conditions employed to fine‐tune the morphological features of these hierarchical nanostructures. Furthermore, this review offers profound insights into critical aspects such as electron transfer mechanisms, band gap engineering, the creation of hetero‐hybrid structures to optimize interface chemistry through diverse synthesis approaches, and precise adjustments of structural features. Beyond elucidating the scientific fundamentals, this review explores the large‐scale applications of the aforementioned solar harvesting systems.

show abstract

Piezo-photoelectric all-in-one coaxial hierarchical TiO2-BaTiO3-CuInS2 heterostructure for synergistic water splitting

Cited by 7 publications

References 42 publications

DNAzyme-Mediated Biodeposition Coupling Adjustable Cascade Electric Fields for Photoelectrochemical Telomerase Activity Monitoring

DNAzyme-Mediated Biodeposition Coupling Adjustable Cascade Electric Fields for Photoelectrochemical Telomerase Activity Monitoring

Defect Engineering and Piezoelectrical Polarization Synergistically Assisted for Photoelectrochemical Sensing Based on CdS Nanowires

Advances in Hierarchical Inorganic Nanostructures for Efficient Solar Energy Harvesting Systems

Contact Info

Product

Resources

About