Table 1 A summary of performances of different materials and designs for PM filtration in recent literatures in comparison to what is achieved in this work.

From: High-performance inertial impaction filters for particulate matter removal

Materials

QFa value (Pa−1)

Δpb for different flow rates(Pa)

Ec (%)

Test particles

Additional advantages

Ref.

PAN nanofiber

0.024

133 Pa for 3 m/s

96.12

PM2.5

~85% transparency

10

PI nanofiber

0.1072

73 Pa for 0.2 m/s

99.97

PM2.5

~370 °C thermal stability

17

PAN nanofiber

0.1014

80 Pa for 0.2 m/s

99.97

PM2.5

~230 °C thermal stability

17

Nylon-6 nanofiber

0.062

42 Pa for 0.2 m/s

92.73

PM2.5

~10 times faster production speed

38

PAN nanofiber

0.052

124 Pa for 0.6~0.8 m/s

99.86

PM2.5

Large-scale direct coating

39

R-TENGd enhanced PI nanofiber

17 Pa for 1 m/s 180 Pa for 5 m/s

97

PM

40

Nanofibrous MOFe

20 Pa for 50 mL/min

88.33 89.67

PM2.5 PM10

41

PVDFf nanofibers with NIPSg

0.042

95 Pa for 0.0166 m/s

98.33

PM2.5

Releasing negative ions

42

PVDF/PAN

0.0954

45 Pa for 14 L/min

98.34

PM2.5

Rapidly transferring moisture

43

Commercial-1

0.00062

299 Pa

16.93

PM2.5

10

Commercial-2

0.0068

809 Pa

99.58

PM2.5

10

This work

0.380 0.524

10 Pa for 8.0 m/s

97.77 99.47

PM2.5 PM10

Extremely low airflow resistance and pressure drop

 
  1. aQF stands for the quality factor, QF = −ln(1 − E%)/Δp.
  2. bΔp stands for the pressure drop.
  3. cE stands for the PM removal efficiency.
  4. dR-TENG stands for the rotating triboelectric nano generator.
  5. eMOF stands for the metal organic framework.
  6. fPVDF stands for the polyvinylidene fluoride.
  7. gNIPs stands for the negative ions powders.