Corrugated Wood Fabricated Using Laser-Induced Graphitization for Salt-Resistant Solar Steam Generation

Abstract

We developed a novel solar steam generator (SSG) with high solar conversion efficiency and excellent salt resistance. A CO2 laser was used to convert the surface of basswood to graphitic carbon layers (GCL), and various grid patterns of GCL were created on wood. The low thermal conductivity of wood suppressed heat loss to bulk water, and the presence of the grooves in the grid increased the evaporation rate by increasing the surface area to absorb more sunlight. In addition, the supply of bulk water through the grooves endowed the SSG with salt resistance and self-regeneration properties. The salt resistance was maintained in a 20-wt % NaCl solution for the duration of the experiment (2 weeks), which indicates that the developed SSG can be used in saline water for long-term operation.

Laser-Induced Graphene on a Quartz Crystal Microbalance for Humidity Sensing

“…After the LIG process, three new peaks appeared in the spectrum: The D peak (1352 cm −1 ), G peak (1595 cm −1 ), and 2D peak (2683 cm −1 ), confirming that graphitic carbon was fabricated [17]. Low graphitic characteristic indicated by the large D peak was the limitation, which can be increased by optimizing the thermal annealing conditions or by changing the atmospheric conditions during the LIG process [18][19][20][21].…”

“…[17] Low graphitic characteristic indicated by the large D peak was the limitation, which can be increased by optimizing the thermal annealing conditions or by changing the atmospheric conditions during the LIG process. [18][19][20][21] The changes in resonance frequency, f, electrical resistance, R, and Q factor, Q, were measured simultaneously during moisture sensing (Figure 4a-c). Five cycles were performed with different relative humidities.…”

Development of a novel cellulose foam augmented with candle-soot derived carbon nanoparticles for solar-powered desalination of brackish water

“…3,4 Substantial efforts have been applied to alleviate the clean water crisis utilizing methods such as multi-effect distillation and reverse osmosis filtration. However, these methods generally require high energy consumption and their engineering requirements have high costs, 5 which leads to other adverse ecological problems. Therefore, there is an urgent need to design and develop low-cost, pollution-free sustainable approaches for efficient water purification.…”

Wood‐Derived Monolithic Ultrathick Porous Carbon Electrodes Filled with Reduced Graphene Oxide for High‐Performance Supercapacitors with Ultrahigh Areal Capacitances

“…[48][49][50] The infiltration of the GO into the pores of the wood with a vacuumed-assisted infiltration followed by a freeze-drying process is to prevent the stacking of the sheets, benefiting the enhancements in specific surface area and conductivity of the wood-derived carbon electrode. [51,52] For the hardwood, only its large pores are filled with GO sheets (Figure S4), while few GO sheets are observed in its small pores. The incomplete infiltration would reduce the effective utilization of porous channels of the hardwood and in turn adversely affect electrochemical performances of the hardwood-derived electrode.…”