p-n Heterostructured BiVO4/g-C3N4 Photoanode: Construction and Its Photoelectrochemical Water Splitting Performance

doi:10.15541/jim20220439

Abstract

Abstract:

Bismuth vanadate (BVO) can be used for photoelectrochemical (PEC) water splitting to hydrogen. However, suffering from its high charge-recombination and slow surface catalytic reaction, the PEC performance is far below the expectation, and the modification of the co-catalysts only on the electrode cannot overcome this disadvantage. Here, we report FeNiO_x cocatalyst decorated on the BVO photoanode, which can restrict the onset potential and improve the PEC performance. Moreover, a more effective dual modified-BVO photoanode is formed, with the loading of g-C₃N₄before decoration of FeNiO_x cocatalyst. The type-II p-n heterojunction composed by g-C₃N₄ nanosheets and BVO, can inhibit recombination of photogenerated charge, and promote the separation of charge effectively at the electrode. Results show that the charge separation efficiency of the electrode reaches 88.2% after the insertion of g-C₃N₄, which is nearly 1.5 times that of BVO/FeNiO_x (60.6%). Moreover, surface charge injection efficiency of the dual-modified BVO/g-C₃N₄/FeNiO_xelectrode reaches 90.2%, while the current density reaches 4.63 mA∙cm^-2 at 1.23 V (vs. RHE). This work provides a facile approach to develope high performance photoanodes for PEC water splitting.

Key words: g-C₃N₄nanosheets, BiVO₄, PEC water splitting, FeNiO_x co-catalyst, p-n heterojunction

CLC Number:

TQ174

WANG Ruyi, XU Guoliang, YANG Lei, DENG Chonghai, CHU Delin, ZHANG Miao, SUN Zhaoqi. p-n Heterostructured BiVO₄/g-C₃N₄ Photoanode: Construction and Its Photoelectrochemical Water Splitting Performance[J]. Journal of Inorganic Materials, 2023, 38(1): 87-96.

Figures/Tables 17

Fig. 1 Schematic diagram of the preparation for BVO and its composite electrode

Fig. 2 (a) X-ray diffraction (XRD) patterns and (b) Fourier transform infrared (FT-IR) spectra of different electrodes

Fig. S1 XRD pattern of g-C3N4 nanosheets

Fig. S2 High resolution SEM images of BVO/g-C3N4/FeNiOx

Fig. 3 Scanning electron microscope (SEM) images of (a) BVO, (b) BVO/g-C3N4, (c) BVO/g-C3N4/FeNiOx, and (d-j) energy dispersive spectrometer (EDS) mappings of BVO/g-C3N4/FeNiOx

Fig. S3 SEM images of pure g-C3N4 nanosheets

Fig. S4 Cross-section SEM image of BVO/g-C3N4/FeNiOx

Fig. 4 X-ray photoelectron spectra (XPS) of BVO/g-C3N4/FeNiOx photoanode (a) Total survey and (b) Bi4f, (c) V2p, (d) O1s, (e) C1s, (f) N1s, (g) Ni2p, (h) Fe2p high resolution spectra

Fig. 5 Mott-Schottky (M-S) curves of (a) BVO and (b) g-C3N4 electrodes

Fig. S5 LSV curves of BVO/g-C3N4/FeNiOx at different scan rates

Fig. 6 Photoelectrochemical performance of different photoanodes (a) Linear sweep voltammetry (LSV) curves under illumination and (b) corresponding Butler curves; (c) LSV curves in the dark; (d) Open circuit potential (OCP) curves; (e) I-t curves at 1.23 V (vs. RHE); (f) Transient decay time curves Colorful figures are available on website

Fig. 7 (a) Ultraviolet and visible (UV-Vis) spectra, (b) Tauc curves, (c) LSV curves with Na2SO3 in electrolyte, (d) bulk charge separation efficiency (ηsep), (e) surface charge injection efficiency (ηinj), and (f) photoluminescence (PL) spectra of different photoanodes Colorful figures are available on website

Fig. S6 Light harvesting efficiency (ηabs) curves of different photoanodes

Fig. S7 Theoretical photocurrent density (Jabs) obtained with integrated solar spectrum for each electrode

Fig. 8 (a) Application bias photon-to-current efficiency (ABPE) and (b) electrochemical impedance spectra (EIS) of photoanodes Colorful figures are available on website

Fig. 9 (a)Gas evolutions detected by gas chromatography and Faradaic efficiency for BVO/g-C3N4/FeNiOx and (b) stability curve of BVO/g-C3N4/FeNiOx Colorful figures are available on website

Fig. 10 Schematic illustration of charge transfer for PEC water splitting

References 37

[1]	TAN H L, AMAL R, NG Y H. Alternative strategies in improving the photocatalytic and photoelectrochemical activities of visible light-driven BiVO₄: a review. Journal of Materials Chemistry A, 2017, 5(32): 16498. DOI URL
[2]	YANG L, YAO C, WANG R, et al. Novel Fe₂O₃/{101}TiO₂ nanosheet array films with stable hydrophobicity and enhanced photoelectrochemical performance. Materials Chemistry and Physics, 2022, 275: 125226. DOI URL
[3]	YANG L, WANG W, ZHANG H, et al. Electrodeposited Cu₂O on the {101} facets of TiO₂ nanosheet arrays and their enhanced photoelectrochemical performance. Solar Energy Materials and Solar Cells, 2017, 165: 27. DOI URL
[4]	WANG S, CHEN P, BAI Y, et al. New BiVO₄ dual photoanodes with enriched oxygen vacancies for efficient solar-driven water splitting. Advanced Materials, 2018, 30(20): 1800486.
[5]	XU W, JIA J, WANG T, et al. Continuous tuning of Au-Cu₂O Janus nanostructures for efficient charge separation. Angewandte Chemie International Edition, 2020, 59(49): 22246. DOI URL
[6]	ZHANG Q, ZHAI B, LIN Z, et al. Dendritic CuBi₂O₄ array photocathode coated with conformal TiO₂ protection layer for efficient and stable photoelectrochemical hydrogen evolution reaction. Journal of Physical Chemistry C, 2021, 125: 1890. DOI URL
[7]	ZHU Y, REN J, YANG X, et al. Interface engineering of 3D BiVO₄/Fe-based layered double hydroxide core/shell nanostructures for boosting photoelectrochemical water oxidation. Journal of Materials Chemistry A, 2017, 5(20): 9952. DOI URL
[8]	ROHLOFF M, ANKE B, KASIAN O, et al. Enhanced photoelectrochemical water oxidation performance by fluorine incorporation in BiVO₄ and Mo:BiVO₄ thin film photoanodes. ACS Applied Materials & Interfaces, 2019, 11(18): 16430.
[9]	BAI S, LIU J, CUI M, et al. Two-step electrodeposition to fabricate the p-n heterojunction of a Cu₂O/BiVO₄ photoanode for the enhancement of photoelectrochemical water splitting. Dalton Transactions, 2018, 47(19): 6763. DOI URL
[10]	HE D, GAO R T, LIU S, et al. Yttrium-induced regulation of electron density in NiFe layered double hydroxides yields stable solar water splitting. ACS Catalysis, 2020, 10(18): 10570. DOI URL
[11]	FANG G, LIU Z, HAN C. Enhancing the PEC water splitting performance of BiVO₄ co-modifying with NiFeOOH and Co-Pi double layer cocatalysts. Applied Surface Science, 2020, 515: 146095. DOI URL
[12]	FENG C, ZHOU Q, ZHENG B, et al. Ultrathin NiCo₂O₄ nanosheets with dual-metal active sites for enhanced solar water splitting of a BiVO₄ photoanode. Journal of Materials Chemistry A, 2019, 7(39): 22274. DOI URL
[13]	ZHANG J, HUANG Y, LU X, et al. Enhanced BiVO₄ photoanode photoelectrochemical performance via borate treatment and a NiFeO_x cocatalyst. ACS Sustainable Chemistry & Engineering, 2021, 9(24): 8306.
[14]	LU Y, YANG Y, FAN X, et al. Boosting charge transport in BiVO₄ photoanode for solar water oxidation. Advanced Materials, 2022, 34(8): 2108178. DOI URL
[15]	LI X, WAN J, MA Y, et al. Study on cobalt-phosphate (Co-Pi) modified BiVO₄/Cu₂O photoanode to significantly inhibit photochemical corrosion and improve the photoelectrochemical performance. Chemical Engineering Journal, 2021, 404: 127054. DOI URL
[16]	ZHANG K, JIN B, PARK C, et al. Black phosphorene as a hole extraction layer boosting solar water splitting of oxygen evolution catalysts. Nature Communications, 2019, 10(1): 2001. DOI PMID
[17]	VOLOKH M, PENG G, BARRIO J, et al. Carbon nitride materials for water splitting photoelectrochemical cells. Angewandte Chemie International Edition, 2019, 58(19): 6138. DOI URL
[18]	ZENG G, DENG Y, YU X, et al. Ultrathin g-C₃N₄ as a hole extraction layer to boost sunlight-driven water oxidation of BiVO₄- based photoanode. Journal of Power Sources, 2021, 494: 229701. DOI URL
[19]	WANG Q, WANG W, ZHONG L, et al. Oxygen vacancy-rich 2D/2D BiOCl-g-C₃N₄ ultrathin heterostructure nanosheets for enhanced visible-light-driven photocatalytic activity in environmental remediation. Applied Catalysis B: Environmental, 2018, 220: 290. DOI URL
[20]	ZENG G, WANG X, YU X, et al. Ultrathin g-C₃N₄/Mo:BiVO₄ photoanode for enhanced photoelectrochemical water oxidation. Journal of Power Sources, 2019, 444: 227300. DOI URL
[21]	LIANG Z, GE X, LIU J. An amorphous FeNiO_x thin film obtained by anodic electrodeposition as an electrocatalyst toward the oxygen evolution reaction. New Journal of Chemistry, 2019, 43(48): 19422. DOI URL
[22]	HOU Y, ZUO F, DAGG A P, et al. Branched WO₃ nanosheet array with layered C₃N₄ heterojunctions and CoO_x nanoparticles as a flexible photoanode for efficient photoelectrochemical water oxidation. Advanced Materials, 2014, 26(29): 5043. DOI URL
[23]	CHEN Z, LI Y, TIAN F, et al. Synthesis of BiVO₄/g-C₃N₄ S-scheme heterojunction via a rapid and green microwave route for efficient removal of glyphosate. Separation and Purification Technology, 2022, 287: 120507. DOI URL
[24]	WANG Y, YU D, WANG W, et al. Synthesizing Co₃O₄-BiVO₄/ g-C₃N₄ heterojunction composites for superior photocatalytic redox activity. Separation and Purification Technology, 2020, 239: 116562. DOI URL
[25]	REDDY D A, REDDY K A J, GOPANNAGARI M, et al. Exposure of NiFe-LDH active sites by cation-exchange to promote photoelectrochemical water splitting performance. Applied Surface Science, 2021, 570: 151134. DOI URL
[26]	FENG C, WANG Z, MA Y, et al. Ultrathin graphitic C₃N₄ nanosheets as highly efficient metal-free cocatalyst for water oxidation. Applied Catalysis B: Environmental, 2017, 205: 19. DOI URL
[27]	GAO R T, WU L, LIU S, et al. Boosting the stability of BiVO₄ photoanodes: in situ cocatalyst passivation and immobilization by functional fluorine anions. Journal of Materials Chemistry A, 2021, 9(10): 6298. DOI URL
[28]	KIM T W, CHOI K S. Nanoporous BiVO₄ photoanodes with dual-layer oxygen evolution catalysts for solar water splitting. Science, 2014, 343: 990. DOI URL
[29]	WANG L, WU F, CHEN X, et al. Defective metal-organic framework assisted with nitrogen doping enhances the photoelectrochemical performance of BiVO₄. ACS Applied Energy Materials, 2021, 4(11): 13199. DOI URL
[30]	YUE P, SHE H, ZHANG L, et al. Super-hydrophilic CoAl-LDH on BiVO₄ for enhanced photoelectrochemical water oxidation activity. Applied Catalysis B: Environmental, 2021, 286: 119875. DOI URL
[31]	LU X, YE K H, ZHANG S, et al. Amorphous type FeOOH modified defective BiVO₄ photoanodes for photoelectrochemical water oxidation. Chemical Engineering Journal, 2022, 428: 131027. DOI URL
[32]	GAO R T, WANG L. Stable co-catalyst-free BiVO₄ photoanodes with passivated surface states for photocorrosion inhibition. Angewandte Chemie International Edition, 2020, 132(51): 23294.
[33]	YANG J W, PARK I J, LEE S A, et al. Near-complete charge separation in tailored BiVO₄-based heterostructure photoanodes toward artificial leaf. Applied Catalysis B: Environmental, 2021, 293: 120217. DOI URL
[34]	PAN J B, WANG B H, WANG J B, et al. Activity and stability boosting of an oxygen-vacancy-rich BiVO₄ photoanode by NiFe-MOFs thin layer for water oxidation. Angewandte Chemie International Edition, 2021, 60(3): 1433. DOI URL
[35]	GAO R T, LIU S, GUO X, et al. Pt-induced defects curing on BiVO₄ photoanodes for near-threshold charge separation. Advanced Energy Materials, 2021, 11(45): 2102384. DOI URL
[36]	GAO R T, LIU X, ZHANG X, et al. Steering electron transfer using interface engineering on front-illuminated robust BiVO₄ photoanodes. Nano Energy, 2021, 89: 106360. DOI URL
[37]	ZHOU T, WANG J, CHEN S, et al. Bird-nest structured ZnO/TiO₂ as a direct Z-scheme photoanode with enhanced light harvesting and carriers kinetics for highly efficient and stable photoelectrochemical water splitting. Applied Catalysis B: Environmental, 2020, 267: 118599. DOI URL

p-n Heterostructured BiVO₄/g-C₃N₄ Photoanode: Construction and Its Photoelectrochemical Water Splitting Performance

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