Three-dimensional charge transfer pathway in close-packed nickel hexacyanoferrate−on−MXene nano-stacking for high-performance capacitive deionization

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 452, P. 139451 - 139451

Published: Sept. 28, 2022

Language: Английский

---

Synergistic effect of intercalation and EDLC electrosorption of 2D/3D interconnected architectures to boost capacitive deionization for water desalination via MoSe2/mesoporous carbon hollow spheres

Water Research, Journal Year: 2023, Volume and Issue: 235, P. 119831 - 119831

Published: March 6, 2023

Language: Английский

---

1D-2D hybridization: Nanoarchitectonics for grain boundary-rich platinum nanowires coupled with MXene nanosheets as efficient methanol oxidation electrocatalysts

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 450, P. 137932 - 137932

Published: July 6, 2022

Language: Английский

---

Electrode Materials for Desalination of Water via Capacitive Deionization

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(35)

Published: April 13, 2023

Recent years have seen the emergence of capacitive deionization (CDI) as a promising desalination technique for converting sea and wastewater into potable water, due to its energy efficiency eco-friendly nature. However, low salt removal capacity parasitic reactions limited effectiveness. As result, development porous carbon nanomaterials electrode materials been explored, while taking account material characteristics such morphology, wettability, high conductivity, chemical robustness, cyclic stability, specific surface area, ease production. To tackle reaction issue, membrane (mCDI) was proposed which utilizes ion-exchange membranes coupled electrode. Fabrication techniques along with experimental parameters used evaluate performance different are discussed in this review provide an overview improvements made CDI mCDI purposes.

Language: Английский

---

A Reverse‐Defect‐Engineering Strategy toward High Edge‐Nitrogen‐Doped Nanotube‐Like Carbon for High‐Capacity and Stable Sodium Ion Capture

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(49)

Published: Oct. 4, 2022

Abstract Developing high‐performance defect‐rich carbon materials with abundant accessible active sites is exceedingly vital for electrochemical water desalination, but this still remains a significant challenge. Herein, reverse‐defect‐engineering strategy reported to synthesize high edge‐nitrogen‐doped nanotube‐like through the annealing process of protonated g‐C 3 N 4 under H 2 atmosphere. The hydrogen bonds interaction between proton and nitrogen atoms performs crucial role in regulating configurations. nitrogen‐doped obtained from HCl pretreatment (HCl‐NC) reduces proportion graphitic exhibits ratio pyrrolic pyridinic N. Thus, resulting synergetic structure edge‐type small nanodomains ensures more fast charge‐transfer kinetics simultaneously, contributing desalination capacity (100.3 mg g −1 at 1.2 V), time‐average specific adsorption rate (1.7 min ), low energy consumption (82.9 kJ mol NaCl superior cyclic stability (no signs performance decay after long‐term cycling). Na + ‐intercalation mechanism structure‐response relationship HCl‐NC are revealed by quartz crystal microbalance dissipation monitoring density functional theory calculations, respectively. This study provides novel idea modulate nanotube‐like, nitrogen‐containing configurations engineering nanomaterials advanced applications.

Language: Английский

---

Ti₃C₂‐MXene Partially Derived Hierarchical 1D/2D TiO₂/Ti₃C₂ Heterostructure Electrode for High‐Performance Capacitive Deionization

Advanced Science, Journal Year: 2022, Volume and Issue: 10(2)

Published: Nov. 28, 2022

Constructing faradaic electrode with superior desalination performance is important for expanding the applications of capacitive deionization (CDI). Herein, a simple one-step alkalized treatment in situ synthesis 1D TiO2 nanowires on surface 2D Ti3 C2 nanosheets, forming -MXene partially derived hierarchical 1D/2D /Ti3 heterostructure as cathode reported. Cross-linked help avoid layer stacking while acting protective against contact internal dissolved oxygen water. The inner MXene nanosheets cross over can provide abundant active adsorption sites and short ion/electron diffusion pathways. . Density functional theory calculations demonstrated that consecutively inject electrons into , indicating high electrochemical activity Benefiting from structure synergistic effect presents favorable hybrid CDI performance, capacity (75.62 mg g-1 ), fast salt rate (1.3 min-1 satisfactory cycling stability, which better than most published MXene-based electrodes. This study provides feasible partial derivative strategy construction to overcome restrictions CDI.

Language: Английский

---

Embedding Metal–Organic Frameworks for the Design of Flexible Hybrid Supercapacitors by Electrospinning: Synthesis of Highly Graphitized Carbon Nanofibers Containing Metal Oxide Nanoparticles

Small Structures, Journal Year: 2022, Volume and Issue: 3(9)

Published: July 8, 2022

Electrospun carbonaceous fibers have emerged as promising electrode materials for application in energy storage devices. However, their relatively poor electrical conductivity (due to amorphous carbon structures) and low capacitive performance lead prospects further application. Herein, a universal synthesis of highly graphitized nanofibers, containing various metal oxide nanoparticles (e.g., Fe 2 O 3 , NiO), by the pyrolysis metal–organic framework (MOF)‐embedded electrospun is reported. The resulting nanofibers exhibit large mesopore volumes, contain quantities Faradic nanoparticles, are graphitized. also excellent mechanical flexibility, provide fast ion transfer characteristics, pseudocapacitance combined with conductivity, leading specific capacitances. Consequently, asymmetric flexible hybrid supercapacitors assembled from ‐embedded (FOCNF) NiO‐embedded (NOCNF) high density 43.1 Wh kg −1 at power 412.5 W possess flexibility (capacitance retention 94.4% 180° bending 96.2% 30° twisting) superior cycling stability. This strategy provides new MOF‐based approach design multifunctional might

Language: Английский

---

Green double organic salt activation strategy for one-step synthesis of N-doped 3D hierarchical porous carbon for capacitive deionization

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 453, P. 139764 - 139764

Published: Oct. 13, 2022

Language: Английский

---

MOF-Derived nanoarchitectured carbons in wood sponge enable solar-driven pumping for high-efficiency soil water extraction

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 452, P. 139193 - 139193

Published: Sept. 15, 2022

Language: Английский

---

Enhanced Pseudo-Capacitance Process in Nanoarchitectural Layered Double Hydroxide Nanoarrays Hollow Nanocages for Improved Capacitive Deionization Performance

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(20), P. 24427 - 24436

Published: May 12, 2023

Layered double hydroxides (LDHs) are perceived as a hopeful capacitive deionization (CDI) faradic electrode for Cl- insertion due to its tunable composition, excellent anion exchange capacity, and fast redox activity. Nevertheless, the self-stacking inferior electrical conductivity of two-dimensional structure LDH lead unsatisfactory CDI performance. Herein, three-dimensional (3D) hollow nanocage CoNi-layered hydroxide/carbon composites is well designed anode by cation etching pre-carbonized ZIF-67 template. C/CoNi-LDH has unique 3D abundant pore features, which can effectively suppress sheets facilitate transport ions. Moreover, introduced amorphous carbon layer act conductive network. When employed anode, exhibited high removal capacity 60.88 mg g-1 rate 18.09 min-1 at 1.4 V in 1000 L-1 NaCl solution. The mechanism intercalation pseudo-capacitance reaction revealed electrochemical kinetic analysis ex situ characterization. This study provides vital guidance design high-performance electrodes CDI.

Language: Английский

---